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Enhanced performance and flexibility of perovskite/silicon tandem solar cells via uniform submicron pyramids 认领 引用
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作者 Qi Liu Junjun Li +9 位作者 Fei Wang Shuangbiao Xia Yuhui Ji Yutao Wang Yunren Luo Jian Yu Fanying Meng Liping Zhang Zhengxin Liu Wenzhu Liu 《ENGINEERING Energy》 SCIE EI CAS CSCD 2026年第3期101-109,共9页
The interfacial stress between silicon bottom cell and perovskite top cell remains a critical challenge for flexible perovskite/silicon tandem solar cells,leading to interfacial delamination and device degradation.In ... The interfacial stress between silicon bottom cell and perovskite top cell remains a critical challenge for flexible perovskite/silicon tandem solar cells,leading to interfacial delamination and device degradation.In this work,the effect of the thickness and pyramid size on mechanical properties of silicon wafers are investigated,demonstrating that thinner wafers and smaller pyramids significantly enhance the flexural strength of thin silicon wafers by mitigating stress concentration effects.Based on these findings,a synergistic optimization strategy is proposed that employs precise wet-etching control to fabricate small-sized,high-density,uniform pyramids on 55μm silicon wafers for efficient and flexible perovskite/silicon tandem solar cells.By optimizing the texturing duration,this approach simultaneously enhances the minority carrier lifetime(τ)and achieves an excellent implied open-circuit voltage(iVoc).Furthermore,the uniform submicron-scale pyramid structure promotes high-quality perovskite film formation and improves interfacial contact properties.As a proof of concept,monolithic flexible perovskite/silicon tandem devices fabricated on such uniformly textured pyramids delivered a power conversion efficiency(PCE)of 30.04%.These devices promise for low-cost,lightweight and flexible photovoltaic applications. 展开更多
关键词 submicron pyramids uniform perovskites silicon flexible tandem solar cells
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Efficacy and safety comparisons of PD-1 versus PD-L1 inhibitors in patients with solid cancer:a systematic review and meta-analysis 认领 引用
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作者 Jun Yu Qiaoxia Zhou +14 位作者 Guoqiang Wang Shangheng Shi Hongwei Wang Jinyu Yang Xiaoran Sun Junjun Li Yezhen Shi Jing Wang Xiaofan Guo Yiping Zou Yongjie Xie Zhou Zhang Yuzi Zhang Shangli Cai Jihui Hao 《Journal of the National Cancer Center》 CSCD 2026年第3期259-273,共15页
Background:A comprehensive evaluation between PD-1 and PD-L1 inhibitors is critical for appropriate treatment choice.To evaluate the efficacy and safety of PD-1 and PD-L1 inhibitors,this meta-analysis was conducted th... Background:A comprehensive evaluation between PD-1 and PD-L1 inhibitors is critical for appropriate treatment choice.To evaluate the efficacy and safety of PD-1 and PD-L1 inhibitors,this meta-analysis was conducted through adjusted indirect comparison.Methods:Systematic literature search was conducted in PubMed,Embase,and Cochrane Central databases from January 1st 2000 to January 31st 2023.Randomized controlled trials(RCT)comparing PD-1/PD-L1 inhibitors with standard treatments in solid tumors were retrieved.Eligible RCTs regarding PD-1/PD-L1 inhibitors were matched as mirror groups according to the same population and study design.Hazard ratio(HR)for overall survival(OS),progression-free survival(PFS),and disease-free/event-free survival(DFS/EFS),and risk ratio(RR)for objective response rate(ORR)and adverse events(AEs)were generated from indirect comparisons in each mirror group and pooled for overall meta-analysis.Results:In total,96 eligible RCTs with 104 arms of 56,597 patients were identified to construct 32 mirror groups.Patients treated with PD-1 inhibitors exhibited improved OS(HR,0.86[95%CI:0.81,0.90];P<0.001),PFS(HR,0.85[95%CI:0.75,0.96];P=0.01),and DFS/EFS(HR,0.81(95%CI:0.70,0.94];P=0.005)in all populations compared with those with PD-L1 inhibitors,together with a higher ORR(RR,1.12[95%CI:1.04,1.20];P=0.002).While PD-1 inhibitors showed comparable rates of treatment-related AEs with PD-L1 inhibitors,PD-1 inhibitors demonstrated a higher discontinuation rate due to treatment-related AEs(RR,2.27[95%CI:1.91,2.70];P<0.0001).Conclusions:This meta-analysis revealed that PD-1 inhibitors exhibited better survival outcomes compared with PD-L1 inhibitors in solid tumors with comparable safety profiles except for a higher discontinuation rate.This systematic review was registered in PROSPERO as CRD42023452639. 展开更多
关键词 PD-1 inhibitors PD-L1 inhibitors Efficacy Safety Cancer
The cardioprotective mechanisms of draconis sanguis:An integrated network pharmacology,bioinformatics,and experimental validation study 认领 引用
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作者 Keyan Wang Rongxin Zhu +7 位作者 Junjun Li Binhua Yuan Xiang Li Yunlin li Mingyue Huang Fangfang Rui Chun Li Wei Wang 《Journal of Traditional Chinese Medical Sciences》 CAS CSCD 2025年第3期336-347,共12页
Objective:To investigate the potential targets and mechanisms of Draconis Sanguis(DS),a valuable traditional Chinese medicine derived from the resin of the palm tree Daemonorops draco Bl(D.Sanguis,Xue Jie),in the trea... Objective:To investigate the potential targets and mechanisms of Draconis Sanguis(DS),a valuable traditional Chinese medicine derived from the resin of the palm tree Daemonorops draco Bl(D.Sanguis,Xue Jie),in the treatment of myocardial infarction(MI).Methods:We explored the potential mechanisms of DS in the treatment of MI using network pharmacology,bioinformatic techniques,and transcriptomic analysis,followed by validation through in vivo and in vitro experiments.Results:Network pharmacology and bioinformatic analyses identified five genes(Fpr1,Glul,Mme,Mmp9,and Pla2g7)as potential targets for MI treatment.Moreover,DS significantly ameliorated cardiac function,inflammatory responses,and MI-induced myocardial fibrosis in vivo.Transcriptomic and bioinformatic analyses identified Pla2g7 as the most critical target in the DS treatment of MI.Molecular docking revealed that the key active ingredient in DS has a strong affinity for this gene.Furthermore,DS reduced the expression of Pla2g7(P=.0009),NLRP3(P=.003),interleukin-18(P<.001),and interleukin-1b(P=.004)mRNAs in vivo.Conclusions:The results indicate that DS can downregulate the expression of Pla2g7 and reduce the inflammatory response.This demonstrates the potential therapeutic target of DS and the mechanism underlying its cardioprotective effects. 展开更多
关键词 Myocardial infarction Draconis sanguis Network pharmacology Bioinformatics RNA-seq Pla2g7
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Progress of the pathogenesis in varicocele:a narrative review 认领 引用
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作者 Liang Dong Jialu Xin +3 位作者 Jingyi Zhang Zheng Liu Junjun Li Xujun Yu 《The Canadian Journal of Urology》 SCIE 2026年第1期63-74,共12页
Varicocele(VC)is widely recognized as a prevalent and clinically significant cause of male infertility.However,the comprehensive pathogenic mechanisms underlying VC development and progression remain incompletely unde... Varicocele(VC)is widely recognized as a prevalent and clinically significant cause of male infertility.However,the comprehensive pathogenic mechanisms underlying VC development and progression remain incompletely understood,creating an important knowledge gap in the field of andrology.This review establishes that VC pathogenesis centers on abnormal vascular remodeling and integrates multiple contributing elements,including anatomical abnormalities,biochemical disturbances,genetic factors,low body mass index(BMI),age,and specific sports habits,while secondary varicoceles are primarily induced by compressive pathologies.Through a systematic synthesis of current evidence and recent advances,this review aims to elucidate the complex pathogenic network of VC and provide valuable insights to guide future research directions and inform the development of targeted clinical applications. 展开更多
关键词 varicocele pathogenesis vascular remodeling genetic factors anatomical factors
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The Probability Density Function Related to Shallow Cumulus Entrainment Rate and Its Influencing Factors in a Large-Eddy Simulation 认领 引用 被引量：5
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作者 Lei ZHU Chunsong LU +5 位作者 Xiaoqi XU Xin HE Junjun LI Shi LUO Yuan WANG Fan WANG 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2024年第1期173-187,共15页
The process of entrainment-mixing between cumulus clouds and the ambient air is important for the development of cumulus clouds.Accurately obtaining the entrainment rate(λ)is particularly important for its parameteri... The process of entrainment-mixing between cumulus clouds and the ambient air is important for the development of cumulus clouds.Accurately obtaining the entrainment rate(λ)is particularly important for its parameterization within the overall cumulus parameterization scheme.In this study,an improved bulk-plume method is proposed by solving the equations of two conserved variables simultaneously to calculateλof cumulus clouds in a large-eddy simulation.The results demonstrate that the improved bulk-plume method is more reliable than the traditional bulk-plume method,becauseλ,as calculated from the improved method,falls within the range ofλvalues obtained from the traditional method using different conserved variables.The probability density functions ofλfor all data,different times,and different heights can be well-fitted by a log-normal distribution,which supports the assumed stochastic entrainment process in previous studies.Further analysis demonstrate that the relationship betweenλand the vertical velocity is better than other thermodynamic/dynamical properties;thus,the vertical velocity is recommended as the primary influencing factor for the parameterization ofλin the future.The results of this study enhance the theoretical understanding ofλand its influencing factors and shed new light on the development ofλparameterization. 展开更多
关键词 large-eddy simulation cumulus clouds entrainment rate probability density functions spatial and temporal distribution
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An all-in-one visual selection system for malesterile line production in maize and rice 认领 引用 被引量：1
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作者 Jinchu Liu Zongkai Liu +19 位作者 Dahu Qin Xiaolong Qi Ming Chen Dehe Cheng Shuwei Guo Xinyue Zhang LiangLiang Zhang Tongzheng Yan Feifan Li Wenwen He Zhixiao Lu Hongshuo Wang Junjun Li Xuhua Yang Yunlu Shi Shuaisong Zhang Haiming Zhao Chenxu Liu Shaojiang Chen Yu Zhong 《Plant Communications》 SCIE CSCD 2026年第2期48-58,共11页
Heterosis has significantly improved crop yields,yet hybrid seed production remains hindered by laborintensive manual emasculation.Although current male-sterility systems,such as cytoplasmic male sterility and environ... Heterosis has significantly improved crop yields,yet hybrid seed production remains hindered by laborintensive manual emasculation.Although current male-sterility systems,such as cytoplasmic male sterility and environment-sensitive genic male sterility,have improved the efficiency of hybrid seed production,their limited genetic adaptability and high environmental dependence remain major challenges.Here,we report an all-in-one seed production technology(ASPT)that integrates CRISPR-Cas9,RUBY,and key seed production technology(SPT)components into a single vector,enabling efficient generation and propagation of malesterile lines in both maize and rice.The engineered RUBY marker enables visual identification of malesterile and maintainer lines,with an accuracy of 99.81%in automated seed sorting and 100%in secondary field screening.Notably,ASPT was successfully introduced into 21 genetically diverse elite maize inbred lines,demonstrating broad compatibility.ASPT enables scalable and precise propagation of male-sterile lines in both maize and rice,providing a broadly applicable strategy to advance hybrid seed production in crops. 展开更多
关键词 maize rice ASPT male-sterile line RUBY
Distinct gut microbial profile in PIT1 lineage PitNETs:a potential link to cognitive impairment 认领 引用
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作者 Junjun Li Lingye Zhang +3 位作者 Chen Ma Jiang Long Jinpeng Lv Xingli Deng 《Chinese Neurosurgical Journal》 CSCD 2026年第1期71-84,共14页
Background Patients with pituitary neuroendocrine tumors(PitNETs)frequently experience cognitive impairment(CI),yet the underlying mechanisms remain poorly understood.Method In this study,we assessed cognitive functio... Background Patients with pituitary neuroendocrine tumors(PitNETs)frequently experience cognitive impairment(CI),yet the underlying mechanisms remain poorly understood.Method In this study,we assessed cognitive function in 42 PitNETs patients and 42 healthy controls using the Montreal Cognitive Assessment(MoCA),evaluating the effects of tumor volume,invasiveness,pituitary hormone levels,lineage,and surgical intervention.Furthermore,16S rRNA amplicon sequencing of fecal samples was performed to reveal alterations in gut microbiota composition.Results The results demonstrated significantly lower MoCA scores in PitNETs patients compared to controls.Patients with PIT1 lineage tumors exhibited more severe CI than those with SF-1 lineage tumors.Notably,surgical treatment led to improved cognitive performance.The sequencing revealed significant alterations in gut microbiota composition in PitNETs patients.Specifically,PIT1 lineage cases showed reduced levels of the butyrate-producing genus Agathobacter and increased abundance of UBA1819 and Alistipes indistinctus,taxa that have been implicated in proinflammatory states.Discussion These preliminary findings suggest that PIT1-lineage PitNETs may be associated with an increased susceptibility to cognitive impairment,potentially involving interactions between hormonal dysregulation and gut microbiota dysbiosis.This exploratory hypothesis provides a conceptual framework for future research to elucidate underlying mechanisms and explore potential interventions for cognitive impairment in PitNETs. 展开更多
关键词 Pituitary neuroendocrine tumors Cognitive function Montreal Cognitive Assessment Hormone Gut microbiota
Comparative study on purification optimization and characteristics of grape seed proanthocyanidins 认领 引用
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作者 Hong Song Shuai Liu +4 位作者 Yanping Huang Jiaxin Huan Cui Zhang Junjun Li Chunlong Yuan 《Food Innovation and Advances》 2025年第2期191-200,共10页
Grape seed is the main source of proanthocyanidins(PAs),which have antioxidant,anticancer,and anti-inflammatory activities.Resin can realize the separation and purification of substances and is frequently used for pur... Grape seed is the main source of proanthocyanidins(PAs),which have antioxidant,anticancer,and anti-inflammatory activities.Resin can realize the separation and purification of substances and is frequently used for purifying PAs.Sephadex LH-20 is mostly used for PA classification;however,less relevant studies comparing the purification of the Sephadex LH-20 and the resin have been conducted.In this study,the purification capacity of proanthocyanidins from grape seeds was compared between the AB-8 macroporous resin and the Sephadex LH-20.The adsorption mechanism was described by Langmuir and Freundlich equations,and the purification parameters were optimized by adsorption–desorption experiments and Box-Behnken design.The components and contents of the purified products were analyzed,it was compared with crude products.The results showed that the optimal process parameters included the following:loading volume 25 mg/mL;loading volume 1 mL;washing with 5-bed volume(BV)distilled water to remove impurities;and about 60%(v/v)acetone washing with 4.3−4.6 BV desorption.After purification,the concentration of the monomer and purity were improved,and the AB-8 resin was more suitable as the purification filler than the Sephadex LH-20.In conclusion,optimization of the purification parameters of the AB-8 macroporous resin and the Sephadex LH-20 has the characteristics of high efficiency,economy,and environmental protection,and has significant industrial production potential,providing a direction for the reuse of waste wine residue. 展开更多
关键词 grape seeds grape seed proanthocyanidins optimization resin adsorption mechanism separation purification substances purity Sephadex LH
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Recent Advances in Interface Engineering for Electrocatalytic CO2 Reduction Reaction 认领 引用 被引量：38
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作者 Junjun Li Sulaiman Umar Abbas +2 位作者 Haiqing Wang Zhicheng Zhang Wenping Hu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2021年第12期499-533,共35页
Electrocatalytic CO2 reduction reaction(CO2 RR) can store and transform the intermittent renewable energy in the form of chemical energy for industrial production of chemicals and fuels,which can dramatically re... Electrocatalytic CO2 reduction reaction(CO2 RR) can store and transform the intermittent renewable energy in the form of chemical energy for industrial production of chemicals and fuels,which can dramatically reduce CO2 emission and contribute to carbon-neutral cycle. E cient electrocatalytic reduction of chemically inert CO2 is challenging from thermodynamic and kinetic points of view. Therefore,low-cost,highly e cient,and readily available electrocatalysts have been the focus for promoting the conversion of CO2. Very recently,interface engineering has been considered as a highly e ective strategy to modulate the electrocatalytic performance through electronic and/or structural modulation,regulations of electron/proton/mass/intermediates,and the control of local reactant concentration,thereby achieving desirable reaction pathway,inhibiting competing hydrogen generation,breaking binding-energy scaling relations of intermediates,and promoting CO2 mass transfer. In this review,we aim to provide a comprehensive overview of current developments in interface engineering for CO2 RR from both a theoretical and experimental stand-point,involving interfaces between metal and metal,metal and metal oxide,metal and nonmetal,metal oxide and metal oxide,organic molecules and inorganic materials,electrode and electrolyte,molecular catalysts and electrode,etc. Finally,the opportunities and challenges of interface engineering for CO2 RR are proposed. 展开更多
关键词 Interface engineering CO2reduction reaction Electrocatalysis Heterostructure
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Recent advances in carbon-based materials for electrochemical CO2 reduction reaction 认领 引用 被引量：12
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作者 Zengqiang Gao Junjun Li +1 位作者 Zhicheng Zhang Wenping Hu 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第5期2270-2280,共11页
The increase of atmospheric CO2concentration has caused many environmental issues.Electrochemi-cal CO2reduction reaction(CO2RR)has been considered as a promising strategy to mitigate these chal-lenges.The ele... The increase of atmospheric CO2concentration has caused many environmental issues.Electrochemi-cal CO2reduction reaction(CO2RR)has been considered as a promising strategy to mitigate these chal-lenges.The electrocatalysts with a low overpotential,high Faradaic efficiency,and excellent selectivity are of great significance for the CO2RR.Carbon-based materials including metal-free carbon catalysts and metal-based carbon catalysts have shown great potential in the CO2RR,owing to the tailorable porous structures,abundant natural resources,resistance to acids and bases,high-temperature stability,and en-vironmental friendliness.In this review,various carbon materials including graphene,carbon nanotubes,quantum dots,porous carbon,and MOF-derived catalysts,etc.,for the CO2RR have been summarized.Particularly,recent progress in terms of the mechanism and pathway of CO2conversion has been com-prehensively reviewed.Finally,the opportunities and challenges of carbon-based electrocatalysts for the CO2RR are proposed. 展开更多
关键词 CO2reduction Electrocatalysis Carbon materials Chemicals and fuels Single-atom catalysts
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A comparative study of the anti-fatigue activity of extracts from different parts of Cistanche tubulosa(Schenk)Wight 认领 引用 被引量：9
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作者 Jianteng Dong Junjun Li +7 位作者 Yizhou Liu Lingwen Cui Xiangning Liu Gang Wang Qixin Wang David N.Criddle Pengfei Tu Chun Li 《Journal of Traditional Chinese Medical Sciences》 CAS 2024年第2期222-231,共10页
Objective:To evaluate the anti-fatigue effects of different extracts from Cistanche tubulosa(Schenk)Wight(C.tubulosa,Rou Cong Rong),focusing on central and exercise-induced fatigue in mice.This study investigated the ... Objective:To evaluate the anti-fatigue effects of different extracts from Cistanche tubulosa(Schenk)Wight(C.tubulosa,Rou Cong Rong),focusing on central and exercise-induced fatigue in mice.This study investigated the pharmacological effects of the total oligosaccharides,polysaccharides,and phenylethanoid glycosides(CPhGs)extracted from C.tubulosa.Methods: Models of sleep deprivation and forced swimming fatigue were established to simulate central and exercise-induced fatigue.The mice were treated with different extracts of C.tubulosa,and their effects were assessed using behavioral tests to measure exercise capacity,learning,and memory function.Biochemical analyses were performed to evaluate the changes in serum and brain neurotransmitter levels,liver and muscle glycogen storage,and various fatigue-related biomarkers.Results: This study found that treatment with C.tubulosa extract improved exercise capacity,learning,and memory in mice.Total oligosaccharides from C.tubulosa enhanced adrenocorticotropic hormone,cholinesterase,and thyroid-stimulating hormone levels,reduced cortisol levels in central fatigue models,and ameliorated biochemical markers of exercise-induced fatigue,including lowering lactic acid,blood urea nitrogen,and malondialdehyde levels.Among the tested extracts,the total oligosaccharides showed the most comprehensive anti-fatigue effects.Conclusion: The anti-fatigue effects of C.tubulosa,particularly those of its total oligosaccharides,are pronounced in both central and exercise-induced fatigue.These effects are mediated by the regulation of neurotransmitter levels,enhancement of glycogen storage,and improvement of antioxidant enzyme activity,suggesting potential therapeutic benefits in fatigue-related conditions. 展开更多
关键词 Cistanche tubulosa Anti-fatigue Central fatigue Exercise fatigue Oligosaccharides
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Fine-tuning inverse metal-support interaction boosts electrochemical transformation of methanol into formaldehyde based on density functional theory 认领 引用 被引量：3
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作者 Wenjuan Yang Junjun Li +5 位作者 Xiaoya Cui Chenhuai Yang Yiting Liu Xianwei Zeng Zhicheng Zhang Qitao Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第8期2489-2494,共6页
Different from traditional metal-support heterogenous catalysts,inverse heterogeneous catalysts,in which the surface of metal is decorated by metal oxide,have recently attracted increasing interests owing to the uniqu... Different from traditional metal-support heterogenous catalysts,inverse heterogeneous catalysts,in which the surface of metal is decorated by metal oxide,have recently attracted increasing interests owing to the unique interracial effect and electronic structure.However,a deep insight into the effect of metaloxide interaction on the catalytic performance still remains a great challenge.In our work,an inverse hematite/palladium(Fe2 O3/Pd) hybrid nanostructure,i.e.,the active Fe2 O3 ultrathin oxide layers partially covering on the surface of Pd nanoparticles(NPs),exhibited superior electrocatalytic performance towards methanol oxidation reaction(MOR) as compared to the bare Pd NPs based on density functional theory calculation.The charge could transfer from Pd to Fe2 O3 driven by the built-in potential at the interface of Pd and Fe2 O3,which favors the downshift of d band center of Pd.With the assistance of interfacial hydroxyl OH*,the cleavage of O—H and C—H in CH3 OH could take place much easily with lower barrier ene rgy on Fe2 O3/Pd than that on pure Pd via two electrons transferring reaction pathways.Our results highlight that the syne rgy of Pd and Fe2 O3 at the interface could facilitate the electrochemical transformation of methanol into formaldehyde assisted with interfacial hydroxyl OH*. 展开更多
关键词 Inverse metal-support interaction Heterostructure Fe2O3/Pd Electrochemical methanol oxidation DFT
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Exclusive CO2-to-formate conversion over single-atom alloyed Cu-based catalysts 认领 引用 被引量：6
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作者 Junjun Li Zhicheng Zhang Wenping Hu 《Green Energy & Environment》 SCIE EI CAS CSCD 2022年第5期855-857,共3页
Electrochemical CO2 reduction reaction(CO2 RR),powered by renewable energy sources,provides an appealing approach to convert emitted CO2 to value-added chemicals and fuels and achieve a carbon-neutral cycle.A... Electrochemical CO2 reduction reaction(CO2 RR),powered by renewable energy sources,provides an appealing approach to convert emitted CO2 to value-added chemicals and fuels and achieve a carbon-neutral cycle.Among various carbon-based products,formic acid(HCOOH) has been considered as a promising liquid hydrogen storage material due to its high energy density and hydrogen content.However,so far,the reported HCOOH-selective catalysts(e.g.,Bi,Sn,In,Pb and Pd) have failed in either activity(<500 mA cm-2) or stability(<20 h),which significantly inhibits the industrialized feasibility of CO2 RR.In contrast,Cu takes the advantages of excellent activity and low cost,making it more commercially viable.To date,one of the most challenging issues of Cu-based catalysts lies in unsatisfactory selectivity,that is,tending to produce mixed products rather than specific one,due to the complicated reaction paths involved.Very recently,Zheng et al.have developed a single-atom alloy(SAAs) strategy for the exclusive CO2-to-formate conversion over Cu-based catalysts.The as-prepared Pb single-atom alloyed Cu catalyst(Pb1Cu)(Fig.la) exhibited near unity selectivity towards HCOOH and impressive stability,providing the prospect of industrial production of HCOOH from CO2. 展开更多
关键词 selectivity stability neutral
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Insight into the Effect of Metal Cations in the Electrolyte on Performance for Electrocatalytic CO2Reduction Reaction 认领 引用 被引量：3
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作者 Junjun Li Zhicheng Zhang Wenping Hu 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2022年第4期1008-1009,共2页
This highlight indicates that the local electrostatic interactions between metal cations and key intermediates facilitate the electrocatalytic CO2 reduction reaction.Electrocatalytic CO2 reduction reaction(CO_(2... This highlight indicates that the local electrostatic interactions between metal cations and key intermediates facilitate the electrocatalytic CO2 reduction reaction.Electrocatalytic CO2 reduction reaction(CO2RR)has been considered as a promising strategy to achieve a carbon-neutral cycle and produce valuable fuels and feedstocks. 展开更多
关键词 CO2reduction reaction electrocatalysis metal cations
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Understanding the dehydrogenation mechanism over iron nanoparticles catalysts based on density functional theory 认领 引用 被引量：1
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作者 Wenjuan Yang Yating Zhu +4 位作者 Junjun Li Zheng Chen Farhat Nosheen Qitao Zhang Zhicheng Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第1期286-290,共5页
The conversion of chemical feedstock materials into high value-added products accompanied with dehydrogenation is of great value in the chemical industry.However,the catalytic dehydrogenation reaction is inhibited by ... The conversion of chemical feedstock materials into high value-added products accompanied with dehydrogenation is of great value in the chemical industry.However,the catalytic dehydrogenation reaction is inhibited by a limited number of expensive noble metal catalysts and lacks understanding of dehydrogenation mechanism.Here,we report the use of heterogeneous non-noble metal iron nanoparticles(NPs) incorporated mesoporous nitrogen-doped carbon to investigate the dehydrogenation mechanism based on experiment observation and density functional theory(DFT) method.Fe NPs catalyst displays excellent performance in the dehydrogenation of 1,2,3,4-tetrahydroquinoline(THQ)with 100% selectivity and 100% conversion for 10-12 h at room temperature.The calculated adsorption energy implies that THQ prefers to adsorb on Fe NPs as compared with absence of Fe NPs.What is more,the energy barrier of transition state is relatively low,illustrating the dehydrogenation is feasible.This work provides an atomic scale mechanism guidance for the catalytic dehydrogenation reaction and points out the direction for the design of new catalysts. 展开更多
关键词 Dehydrogenation mechanism Fe nanoparticles Density functional theory Transition states 1,2,3,4-Tetrahydroquinoline Theoretical calculations
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Adjusting *CO adsorption configuration over tandem trimetallic AuAgCu heterojunction boosts CO2 electroreduction to ethanol via asymmetric C–C coupling 认领 引用 被引量：5
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作者 Yongxia Shi Junjun Li +8 位作者 Zhiwen Min Xinyi Wang Man Hou Hao Ma Zechao Zhuang Yuchen Qin Yuanmiao Sun Dingsheng Wang Zhicheng Zhang 《Science China Materials》 SCIE EI CAS CSCD 2025年第1期173-179,共7页
Rationally modulating the adsorption configuration of the key*CO intermediate could facilitate carbon±carbon(C±C)coupling to generate multi-carbon products in the electrochemical CO2 reduction reaction.In... Rationally modulating the adsorption configuration of the key*CO intermediate could facilitate carbon±carbon(C±C)coupling to generate multi-carbon products in the electrochemical CO2 reduction reaction.In this work,theoretical calculations reveal that C±C coupling via atopadsorbed*CHO and hollow-adsorbed*CO over Cu sites is an energetically favorable pathway.As a proof of concept,a tandem trimetallic AuAgCu heterojunction(Au@Ag/Cu)was prepared,where the atop-adsorbed*CO over Au@Ag sites could migrate to Cu sites with hollow adsorption configuration,and then the asymmetric C±C coupling via transferred hollow-adsorbed*CO and existed atop-adsorbed*CHO over Cu sites facilitates the formation of the ethanol product,exhibiting a maximum Faraday efficiency of 65.9%at a low potential of−0.3 V vs.reverse hydrogen electrode.Our work provides new insights into the intrinsic understanding of tandem catalysis by regulating adsorption configuration of the intermediate products. 展开更多
关键词 CO2electroreduction C–C coupling tandem catalysis adsorption configuration ethanol
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Achievements, challenges and opportunities in hydrogen production fromwater/seawater splitting using boron-based materials 认领 引用
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作者 Yiran Zhang Yang Xu +4 位作者 Qi Zhou Junjun Li Xinyi Wang Zhenwei Zhao Zhicheng Zhang 《Science China Materials》 SCIE EI CAS CSCD 2025年第2期341-363,共23页
Water splitting is recognized as an environmentally friendly and feasible method to produce hydrogen.However, the high cost, low storage capacity, and poorstability of traditional noble metal-based electrocatalysts ha... Water splitting is recognized as an environmentally friendly and feasible method to produce hydrogen.However, the high cost, low storage capacity, and poorstability of traditional noble metal-based electrocatalysts haveseverely limited the industrial application of electrocatalyticwater splitting. The utilization of seawater splitting not onlyfacilitates the production of high-purity hydrogen on a largescale but also concurrently promotes the desalination process.Over the past decades, transition metal borides (TMBs) havebeen widely used in the field of water splitting due to theadvantages of simple preparation process, good stability, andeasily adjustable composition. This review summarizes therecent progress of TMBs in the electrolysis of water and seawater.Firstly, the influencing factors of electrocatalytic performance and related evaluations are introduced. The basicprinciples of hydrogen evolution reaction, oxygen evolutionreaction, and chlorine evolution reaction in seawater electrolysisare discussed in detail, pointing out the various problemscaused by chloride ions (Cl−) in the process of hydrogenproduction from seawater splitting. In addition, the preparation and optimization strategies of TMBs are emphasized.Finally, the development, challenges, and prospects of electrolytic seawater hydrogen production technology are presented. This review aims to furnish deeper insights intoenhancing the electrocatalytic performance of TMBs in thiscritical area of research. 展开更多
关键词 water/seawater splitting transition metal borides hydrogen production
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Morphological disruption and visual tuning alterations in the primary visual cortex in glaucoma(DBA/2J)mice 认领 引用 被引量：4
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作者 Yin Yang Zhaoxi Yang +9 位作者 Maoxia Lv Ang Jia Junjun Li Baitao Liao Jing’an Chen Zhengzheng Wu Yi Shi Yang Xia Dezhong Yao Ke Chen 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第1期220-225,共6页
Glaucoma is a leading cause of irreve rsible blindness wo rldwide,and previous studies have shown that,in addition to affecting the eyes,it also causes abnormalities in the brain.However,it is not yet clear how the pr... Glaucoma is a leading cause of irreve rsible blindness wo rldwide,and previous studies have shown that,in addition to affecting the eyes,it also causes abnormalities in the brain.However,it is not yet clear how the primary visual cortex(V1)is altered in glaucoma.This study used DBA/2J mice as a model for spontaneous secondary glaucoma.The aim of the study was to compare the electrophysiological and histomorphological chara cteristics of neurons in the V1between 9-month-old DBA/2J mice and age-matched C57BL/6J mice.We conducted single-unit recordings in the V1 of light-anesthetized mice to measure the visually induced responses,including single-unit spiking and gamma band oscillations.The morphology of layerⅡ/Ⅲneurons was determined by neuronal nuclear antigen staining and Nissl staining of brain tissue sections.Eighty-seven neurons from eight DBA/2J mice and eighty-one neurons from eight C57BL/6J mice were examined.Compared with the C57BL/6J group,V1 neurons in the DBA/2J group exhibited weaker visual tuning and impaired spatial summation.Moreove r,fewer neuro ns were observed in the V1 of DBA/2J mice compared with C57BL/6J mice.These findings suggest that DBA/2J mice have fewer neurons in the VI compared with C57BL/6J mice,and that these neurons have impaired visual tuning.Our findings provide a better understanding of the pathological changes that occur in V1 neuron function and morphology in the DBA/2J mouse model.This study might offer some innovative perspectives regarding the treatment of glaucoma. 展开更多
关键词 DBA/2J degeneration gamma band oscillations glaucoma primary visual cortex(V1) retina single-unit recording tuning curve
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Biomimetic extracellular vesicles derived from chimeric antigen receptor monocytes to treat glioblastoma:An efficient and safe intranasal drug delivery nanoplatform 认领 引用 被引量：1
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作者 Qihong Cheng Minjie Wang +9 位作者 Zijie Zhou Huitang Xia Shaojie Yu Jianglin Zheng Kai Zhu Xudong Li Xuan Wang Tao Xin Xiaobing Jiang Junjun Li 《Bioactive Materials》 SCIE CSCD 2025年第10期228-243,共16页
Background:Extracellular vesicles(EVs)have emerged as a promising pharmacotherapeutic modality for glio-blastoma(GBM)drug delivery.However,the clinical translation of EVs remains restricted due to their low yield and ... Background:Extracellular vesicles(EVs)have emerged as a promising pharmacotherapeutic modality for glio-blastoma(GBM)drug delivery.However,the clinical translation of EVs remains restricted due to their low yield and demanding extraction steps.Therefore,extracellular vesicle mimetics(EVMs),as alternatives to EVs,have received much attention.Results:Herein,inspired by the inherent GBM tropism of monocytes and the editable target recognition ability of chimeric antigen receptors(CARs),we present the synthesis and systemic evaluation of a doxorubicin(DOX)-loaded nanoplatform(termed CAR-EVMs@DOX)generated by loading DOX into EVMs derived from CARmodified monocytes(CAR-EVMs)via a modified extrusion method.Due to insufficient GBM drug delivery ef-ficacy and great systemic toxicity caused by the resistance of the bloodbrain barrier(BBB),CAR-EVMs@DOX can be administered intranasally to bypass the BBB,resulting in dramatic GBM-targeted migration and accu-mulation in the GBM site.Moreover,compared with intravenous administration,intranasal delivery of CAREVMs@DOX increases tumor inhibition efficacy while protecting against DOX-induced cardiotoxicity.Conclusions:The findings of our study demonstrate that the intranasal administration of the facile and welldesigned nanoplatform CAR-EVMs@DOX is an advanced drug delivery tactic for GBM therapy,with the po-tential for future clinical translation. 展开更多
关键词 Extracellular vesicle mimetics Chimeric antigen receptors Membrane extrusion Intranasal administration Glioblastoma
Relationships between Cloud Droplet Spectral Relative Dispersion and Entrainment Rate and Their Impacting Factors 认领 引用
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作者 Shi LUO Chunsong LU +9 位作者 Yangang LIU Yaohui LI Wenhua GAO Yujun QIU Xiaoqi XU Junjun LI Lei ZHU Yuan WANG Junjie WU Xinlin YANG 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2022年第12期2087-2106,I0016-I0019,共20页
Cloud microphysical properties are significantly affected by entrainment and mixing processes.However,it is unclear how the entrainment rate affects the relative dispersion of cloud droplet size distribution.Previousl... Cloud microphysical properties are significantly affected by entrainment and mixing processes.However,it is unclear how the entrainment rate affects the relative dispersion of cloud droplet size distribution.Previously,the relationship between relative dispersion and entrainment rate was found to be positive or negative.To reconcile the contrasting relationships,the Explicit Mixing Parcel Model is used to determine the underlying mechanisms.When evaporation is dominated by small droplets,and the entrained environmental air is further saturated during mixing,the relationship is negative.However,when the evaporation of big droplets is dominant,the relationship is positive.Whether or not the cloud condensation nuclei are considered in the entrained environmental air is a key factor as condensation on the entrained condensation nuclei is the main source of small droplets.However,if cloud condensation nuclei are not entrained,the relationship is positive.If cloud condensation nuclei are entrained,the relationship is dependent on many other factors.High values of vertical velocity,relative humidity of environmental air,and liquid water content,and low values of droplet number concentration,are more likely to cause the negative relationship since new saturation is easier to achieve by evaporation of small droplets.Further,the signs of the relationship are not strongly affected by the turbulence dissipation rate,but the higher dissipation rate causes the positive relationship to be more significant for a larger entrainment rate.A conceptual model is proposed to reconcile the contrasting relationships.This work enhances the understanding of relative dispersion and lays a foundation for the quantification of entrainment-mixing mechanisms. 展开更多
关键词 clouds entrainment rate relative dispersion of cloud droplet size distribution mixing and evaporation
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