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Defect-engineered WOx/ZnIn2S4Z-scheme heterojunction boosting photocatalytic H2production via photothermal coupling 认领 引用 被引量：2
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作者 Biao Wang Chunyang Zhang +5 位作者 Shidong Zhao Shujian Wang Feng Liu Kejian Lu Yitao Si Maochang Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第4期9-18,共10页
Recent interest in photocatalytic water splitting has intensified the demand in the development of photocatalysts capable of harnessing the full solar-spectrum.This study introduces a novel WOx/ZnIn2S4Zscheme... Recent interest in photocatalytic water splitting has intensified the demand in the development of photocatalysts capable of harnessing the full solar-spectrum.This study introduces a novel WOx/ZnIn2S4Zscheme heterojunction,prepared by depositing ZnIn2S4(ZIS)nanosheets onto WOxnanorods,enabling efficient photothermal-coupled photocatalytic H2evolution.The success relies on the engineered oxygen vacancies within WOxnanorods,which not only confer excellent photothermal properties lowering the reaction barrier but also create defect levels in WOxfacilitating Z-scheme electron transfer from these levels to the valence band of ZIS.Consequently,the optimized WOx/ZIS heterojunction exhibits a remarkable H2evolution rate of 33.91 mmol h-1g-1with an apparent quantum efficiency of 23.6%at 400 nm.This study provides a new strategy for developing efficient Z-scheme heterojunctions with broadspectrum solar hydrogen production capabilities. 展开更多
关键词 Defect-engineered Z-scheme heterojunction Photocatalytic H2evolution Photothermal coupling
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Defect-engineered iron single-site catalysts with tailored atomic coordination for enhanced mild photothermal therapy via triad modulation of apoptosis and ferroptosis 认领 引用
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作者 Fanghua Zhang Wendong Liu +7 位作者 Zhe Hao Haijun Lu Jinzheng Liu Huajie Pang Ruizhong Zhang Xiyan Li Zongjie Wang Libing Zhang 《BMEMat(BioMedical Engineering Materials)》 CAS CSCD 2026年第1期313-327,共15页
Mild photothermal therapy(MPTT)has emerged as a promising approach for cancer treatment.However;the rapid overexpression of heat shock proteins(HSPs)in cancer cells reduces its therapeutic efficacy.While strategies to... Mild photothermal therapy(MPTT)has emerged as a promising approach for cancer treatment.However;the rapid overexpression of heat shock proteins(HSPs)in cancer cells reduces its therapeutic efficacy.While strategies to suppress HSP expression or induce alternative cell death mechanisms;such as ferroptosis;show potential;overall outcomes remain suboptimal.In this study;we propose a triad material comprising defect-engineered single-site catalysts(DMOF);sodium nitroprusside;and HSP-targeting siRNA.Upon light exposure;this DMOF-SNP-siRNA(DSS)catalyst efficiently generates reactive species;suppresses HSP expression;and depletes intracellular glutathione;thereby inducing strong apoptotic and ferroptotic responses simultaneously.Compared to a defect-free metal-organic frameworks catalyst;the DSS singlesite catalyst demonstrates significantly enhanced photothermal and catalytic properties;leading to remarkable tumor-killing capability while minimizing systemic toxicity.Notably;in a subcutaneously grafted tumor model;60% of treated mice achieved complete remission after just two treatment sessions.Our findings establish a pioneering approach in the design of highperformance triad materials for advanced MPTT applications. 展开更多
关键词 activity species apoptosis defect-engineered MOF ferroptosis mild photothermal therapy
Baiting bacteria with amino acidic and peptidic corona coated defect-engineered antimicrobial nanoclusters for optimized wound healing 认领 引用 被引量：1
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作者 Maonan Wang Houjuan Zhu +11 位作者 Yuling Xue Yanxia Duan Hua Tian Qi Liu Yuzhu Zhang Zibiao Li Xian Jun Loh Enyi Ye Gang Yin Xuemei Wang Xianguang Ding David Tai Leong 《Bioactive Materials》 SCIE CSCD 2024年第12期628-643,共16页
Keeping steps ahead of the bacteria in the race for more efficacious antibacterial strategies is increasingly difficult with the advent of bacterial resistance genes.Herein,we engineered copper sulfide nanoclusters(Cu... Keeping steps ahead of the bacteria in the race for more efficacious antibacterial strategies is increasingly difficult with the advent of bacterial resistance genes.Herein,we engineered copper sulfide nanoclusters(CuSx NCs)with variable sulfur defects for enhanced dual-treatment of bacterial infections by manipulating photothermal effects and Fenton-like activity.Next,by encasing CuSx NCs with a complex mixture of amino acids and short peptides derived from Luria-Bertani bacterial culture media as a protein corona,we managed to coax E.Coli to take up these CuSx NCs.As a whole,Amino-Pep-CuSx NCs was perceived as a food source and actively consumed by bacteria,enhancing their effective uptake by at least 1.5-fold greater than full length BSA protein BSA-corona CuSx NCs.Through strategically using defect-engineering,we successfully fine-tune photothermal effect and Fenton-like capacity of CuSx NCs.Increased sulfur defects lead to reduced but sufficient heat generation under solar-light irradiation and increased production of toxic hydroxyl radicals.By fine-tuning sulfur defects during synthesis,we achieve CuSx NCs with an optimal synergistic effect,significantly enhancing their bactericidal properties.These ultra-small and biodegradable CuSx NCs can rapidly break down after treatment for clearance.Thus,Amino-Pep-CuSx NCs demonstrate effective eradication of bacteria both in vitro and in vivo because of their relatively high uptake,optimal balanced photothermal and chemodynamic outcomes.Our study offers a straightforward and efficient method to enhance bacterial uptake of next generation of antibacterial agents. 展开更多
关键词 Defect-engineered Photothermal effect Chemodynamic effect Copper sulfide nanoclusters Protein corona
Defect-Regulated Electronic and Lattice Evolution in Na4VMn(PO4)3 Toward High-Performance Sodium Storage 认领 引用
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作者 Deyi Zhang Fan Li +8 位作者 Lin Zhou Weiliang Xu Shuoshuo Cheng Xiaohui Rong Weihe Kong Shiyu Li Quan Zhou Junmei Zhao Ying Bai 《Rare Metals》 SCIE EI CAS CSCD 2026年第5期447-457,共11页
NASICON-type Na4VMn(PO4)3(NVMP)is a promising high-capacity cathode for sodium-ion batteries,yet its practical deployment is hindered by Mn3+-driven lattice distortion,persistent oxygen vacancy defects,and... NASICON-type Na4VMn(PO4)3(NVMP)is a promising high-capacity cathode for sodium-ion batteries,yet its practical deployment is hindered by Mn3+-driven lattice distortion,persistent oxygen vacancy defects,and sluggish Na+transport,collectively resulting in accelerated performance degradation.Here,we report a transition-metal defect-engineering strategy that introduces well-controlled Mn vacancies into the Mn/V sublattice,yielding a defect-regulated phase(Na4VMn0.85(PO4)3)with a reconstructed local electronic environment.Comprehensive structural analyses coupled with electrochemical evaluation demonstrate that the vacancy-induced electronic redistribution enhances Mn/V redox reversibility,suppresses oxygen-vacancy formation,and promotes the evolution of more open Na+diffusion pathways.Benefiting from this synergistic regulation,the optimized material delivers markedly improved rate performance(81.7 mAh g-1 at 20C)and long-term cycling stability(81.8%capacity retention after 5000 cycles at 10C).Mechanistic investigations further reveal that the integrated"electron-compensation and lattice-self-adaptation"response associated with cation defects governs the enhanced structural robustness and charge-transfer dynamics.This study provides a viable defect-chemistry-guided design paradigm for high-performance NASICON-type cathodes and offers deeper insight into defect-regulated electrochemical processes in polyanionic frameworks. 展开更多
关键词 cathode materials defect-engineering Na4VMn(PO4)3 NASICON sodium-ion batteries
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Coatings embedded with composite defective metal organic frameworks having excellent mechanical and anti-corrosion properties 认领 引用
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作者 Yue Zhao Cheng Xu +4 位作者 Jin-Wei Zhang Zheng-Hui Qiu Li Wang Ji-Ming Hu Cun-Guo Lin 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第31期217-229,共13页
In this work,a versatile strategy of manipulating defective metal organic frameworks(MOFs)with the assistance of the steric hindrance effect was proposed and applied in coatings.The steric hindrance effect was utilize... In this work,a versatile strategy of manipulating defective metal organic frameworks(MOFs)with the assistance of the steric hindrance effect was proposed and applied in coatings.The steric hindrance effect was utilized to construct the defective MOFs with phosphate,gluconate and phytate as examples.The defective MOFs were synthesized in an aqueous solution at room temperature,having a promising future for industrial application.Tailoring specific defects in MOFs can make molecular chains of polymer penetrate into the internal skeleton and form an interlocking structure.The interlocking effect can enhance the mechanical performance of the coating,and the corrosion inhibition performance of anions can synergistically improve the corrosion resistance of the coating.The waterborne acrylic resin(WAR)embedded with phytate-modified MOF has the highest tensile strength of 23.9 MPa,four times higher than pure WAR.Anti-corrosion test results indicated that the corrosion inhibition efficiencies of composite coatings maintained around 97%after 2 months of immersion in seawater.The structure-property relations of defect-engineered MOFs and the anti-corrosion mechanisms were elaborated in detail by both experiments and molecular dynamics simulation.This strategy has excellent environmental friendliness,reduces the cost of MOF materials,and has broad application prospects. 展开更多
关键词 Coating Anti-corrosion Defect-engineer Metal organic framework
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Engineering covalent organic frameworks with defect for highperformance immunosensor 认领 引用
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作者 Tianci Zhou Ying Deng +5 位作者 Yu Sun Keqin Ying Dongmei Zhang Xiafei Hu Jinlong Li Genxi Li 《Nano Research》 SCIE EI CSCD 2026年第1期1156-1165,共10页
Enhancing the activity of fragile enzymes is greatly useful for various purposes,including fabrication of enzyme-based immunosensors.Herein,we report a defect-engineering strategy for encapsulating enzymes within cova... Enhancing the activity of fragile enzymes is greatly useful for various purposes,including fabrication of enzyme-based immunosensors.Herein,we report a defect-engineering strategy for encapsulating enzymes within covalent organic frameworks(COFs),enabling the resulting immobilized enzymes with excellent catalytic activity and stability to construct high performance immunosensors.In this design,by consciously introducing monoaldehyde ligands into the imine-linked COFs structure,we have precisely customized the structural defects to improve enzyme loading capacity and conformational stability.Defect-engineering interaction modulation between enzymes and COFs drives the enhancement of catalytic performance.Compared to the pristine COFs,the enzyme@defective COFs composites with optimally tuned catalytic performance exhibit a 4.49-fold enhancement in enzymatic activity.Furthermore,it is demonstrated that the stable skeletons of COFs provide exceptional protection for the enzymes against external perturbations.Thereafter,the optimized enzyme@defective COFs are employed to fabricate immunosensor.We have successfully established a detection method for prostate-specific antigen(PSA),achieving a low detection limit of 0.09 ng/mL.More importantly,the developed immunosensor has successfully distinguished the prostate cancer patients from healthy individuals.This work establishes a novel paradigm for enzyme immobilization,ultimately empowering the construction of a PSA immunosensor with high sensitivity,remarkable operational stability,and great clinical application potential. 展开更多
关键词 defect-engineering strategy covalent organic frameworks immunosensor prostate-specific antigen prostate cancer
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Enhanced carbon capture with motif-rich amino acid loaded defective robust metal-organic frameworks 认领 引用 被引量：6
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作者 Qi-Ye Ju Jia-Jia Zheng +6 位作者 Li Xu Hai-Yan Jiang Zi-Qian Xue Lu Bai Yang-Yang Guo Ming-Shui Yao Ting-Yu Zhu 《Nano Research》 SCIE EI CSCD 2024年第3期2004-2010,共7页
The use of metal-organic frameworks(MOFs)as solid adsorption materials for carbon capture is promising,but achieving efficient and reversible adsorption with a balance of capacity and selectivity for carbon dioxide(CO... The use of metal-organic frameworks(MOFs)as solid adsorption materials for carbon capture is promising,but achieving efficient and reversible adsorption with a balance of capacity and selectivity for carbon dioxide(CO2)over N2 remains a challenge.To take full advantage of the strong channel traffic and robustness of MOFs with relatively small pores,it is highly necessary to employ a defect-engineering strategy to construct a broader channel structure that can facilitate the loading of functional motif-rich amino acids(AAs).This strategy can greatly enhance the CO2 adsorption performance of MOF.In this study,motif-rich amino acids are loaded into the defective and robust porous frameworks via combined defect-engineering and post-synthetic methods.The defective Zr/Hf-MOF-808s modified with AAs,especially for the 18 mol%4-nitroisophthalic acid,generated defective products allowing for the loading of L-serine(L-Ser).This modification resulted in a significant improvement in both the adsorption capacity(248%improvement at 298 K,100 kPa)and the selectivity of CO2/N2 using the ideal adsorbed solution theory(IAST),with the selectivity increasing to 120.55 and 38.27 at 15 and 100 kPa,respectively,while maintaining good cycling performance.Density functional theory(DFT)simulation,CO2 temperature-programmed desorption(CO2-TPD),and in situ Fourier transform infrared spectroscopy(FTIR)were further employed to have a better understanding of the enhanced CO2 adsorption capacity.Interestingly,unlike the AAs loaded pristine MOF-808s that showed the best CO2 adsorption capacity with the loading of short and small glycine(Gly),the broadened channel size in our work enables the loading of functional motif-rich L-serine,which brings more active binding sites,improving CO2 adsorption. 展开更多
关键词 carbon capture and storage metal-organic framework(MOF) amino acids(AAs) defect-engineering motif-rich
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