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Three-dimensionally Ordered Macroporous Phosphotungstic Acid/SiO2 for Efficient Catalytic Oxidative Desulfurization 认领 引用 被引量：5
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作者 杜岳 YANG Peng +3 位作者 雷家珩 ZHOU Shiyu LI Junsheng DU Xiaodi 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2018年第4期849-854,共6页
Three-dimensionally ordered（3DOM） macroporous phosphotungstic acid/SiO_2（HPW/SiO_2） materials were prepared by using colloidal crystal as templates and applied for oxidative desulfurization（ODS） of the model fue... Three-dimensionally ordered（3DOM） macroporous phosphotungstic acid/SiO_2（HPW/SiO_2） materials were prepared by using colloidal crystal as templates and applied for oxidative desulfurization（ODS） of the model fuel oil. The obtained HPW/SiO_2 materials were characterized through scanning electron microscopy, powder X-ray diffraction, N_2 sorption, and Fourier transform infrared spectroscopy. The results indicated that 3 DOM HPW/SiO_2 possessed hierarchical pore architectures which contained ordered macropores and disordered mesopores, with the Keggin type HPW embedded in the framework of pore structure. The removal rate of dibenzothiophene（DBT） could reach 100% under the optimum conditions, moreover. The performance was only slightly decreased for the regenerated catalyst after 7 cycles. 展开更多
关键词 three-dimensionally ordered macroporous SiO2 phosphotungstic acid oxidativedesulfurization
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Color tunable upconversion emission in CeO_2:Yb,Er three-dimensional ordered macroporous materials 认领 引用 被引量：3
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作者 程彦敏 杨正文 +3 位作者 廖佳燕 邱建备 宋志国 杨勇 《Journal of Rare Earths》 SCIE EI CAS CSCD 2015年第6期599-603,共5页
The three-dimensional ordered macroporous CeO2：Yb,Er materials were prepared, and the influence of doping concentra- tion of Yb3＋ or Er3＋ ions on upconversion property was investigated. Green and red upconversion e... The three-dimensional ordered macroporous CeO2：Yb,Er materials were prepared, and the influence of doping concentra- tion of Yb3＋ or Er3＋ ions on upconversion property was investigated. Green and red upconversion emissions were observed under the excitation of 980 nm at room temperature. It was found that the ratio of red to green upconversion emission intensity increased with increasing of concentration of the Yb3＋ or Er3＋ ions in the three-dimensional ordered macroporous CeO2：Yb,Er materials. When the concentration of Yb3＋ was 10 mol%, pure red upconversion emission was obtained. The varied mechanism of ratio of red to green upconversion emission intensity was discussed with the concentration of Yb3＋ or Er3＋ ions. 展开更多
关键词 three-dimensional ordered macroporous materials CeO2：Yb,Er upconversion emission color tunability rare earths
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Ultrasmall NiS2Nanocrystals Embedded in Ordered Macroporous Graphenic Carbon Matrix for Efficiently Pseudocapacitive Sodium Storage 认领 引用 被引量：3
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作者 Zhaozhao Liu Jiang Wang +7 位作者 Ran Bi Pinyi Zhao Mengqian Wu Xinyu Liu Likun Yin Chengyang Wang Mingming Chen Kemeng Ji 《Transactions of Tianjin University》 EI CAS 2023年第2期89-100,共12页
Sodium-ion hybrid capacitor(SIHC)is one of the most promising alternatives for large-scale energy storage due to its high energy and power densities,natural abundance,and low cost.However,overcoming the imbalance betw... Sodium-ion hybrid capacitor(SIHC)is one of the most promising alternatives for large-scale energy storage due to its high energy and power densities,natural abundance,and low cost.However,overcoming the imbalance between slow Na+reaction kinetics of battery-type anodes and rapid ion adsorption/desorption of capacitive cathodes is a significant challenge.Here,we propose the high-rate-performance NiS2@OMGC anode material composed of monodispersed NiS2 nanocrystals(8.8±1.7 nm in size)and N,S-co-doped graphenic carbon(GC).The NiS2@OMGC material has a three-dimensionally ordered macroporous(3DOM)morphology,and numerous NiS2 nanocrystals are uniformly embedded in GC,forming a core-shell structure in the local area.Ultrafine NiS2 nanocrystals and their nano-microstructure demonstrate high pseudocapacitive Na-storage capability and thus excellent rate performance(355.7 mAh/g at 20.0 A/g).A SIHC device fabricated using NiS2@OMGC and commercial activated carbon(AC)cathode exhibits ultrahigh energy densities(197.4 Wh/kg at 398.8 W/kg)and power densities(43.9 kW/kg at 41.3 Wh/kg),together with a long life span.This outcome exemplifies the rational architecture and composition design of this type of anode material.This strategy can be extended to the design and synthesis of a wide range of high-performance electrode materials for energy storage applications. 展开更多
关键词 Sodium-ion battery Sodium-ion hybrid capacitor Three-dimensionally ordered macroporous structure Graphenic carbon NiS2nanocrystals
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Enhanced photocatalytic performance of Bi4O5Br2with threedimensionally ordered macroporous structure for phenol removal 认领 引用 被引量：5
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作者 Kunfeng Zhang Hongxia Chen +3 位作者 Wenbo Pei Hongxing Dai Junshan Li Yongfa Zhu 《Nano Research》 SCIE EI CSCD 2023年第7期8871-8881,共11页
Herein,a series of three-dimensionally ordered macroporous(3DOM)Bi4O5Br2photocatalysts with different macropore sizes were successfully fabricated via a polymethyl methacrylate(PMMA)template method.The photoc... Herein,a series of three-dimensionally ordered macroporous(3DOM)Bi4O5Br2photocatalysts with different macropore sizes were successfully fabricated via a polymethyl methacrylate(PMMA)template method.The photocatalytic activity for phenol degradation over 3DOM Bi4O5Br2first increased and then decreased with the rise in macropore size.Specifically,3DOM Bi4O5Br2-255(macropore diameter ca.170 nm)exhibits the best photocatalytic activity in the static system,which is about 4.5,7.3,and 11.9 times higher than those of bulk Bi4O5Br2,Bi2WO6,and g-C3N4,respectively.Meanwhile,high phenol conversion(75%)is also obtained over 3DOM Bi4O5Br2-255 in the flow system under full spectrum irradiation.Furthermore,3DOM Bi4O5Br2-255 also shows strong mineralization capacity owing to the downward shift of valance band position(0.15 V)as compared with Bi4O5Br2.Total organic carbon(TOC)removal rate over 3DOM Bi4O5Br2-255(62%)is much higher than that of Bi4O5Br2(17%).The enhancement in photocatalytic performance of 3DOM Bi4O5Br2-255 is attributable to its better phenol adsorption,O2activation,and charge separation and transfer abilities.This work combines the advantages of 3D structure and surface dangling bonds,providing new possibilities for designing highly efficient photocatalysts for pollutants removal. 展开更多
关键词 three-dimensionally ordered macroporous structure Bi4O5Br2 O2activation photocatalysis degradation
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Immobilization of Glucose Oxidase on Ordered Macroporous Silicas Functionalized with Amino Group 认领 引用 被引量：2
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作者 Wu,Quanzhou He,Jianfeng +1 位作者 Zhang,Jingjia Ou,Jiming 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2012年第2期283-287,共5页
A novel glucose oxidase immobilized on three-dimensionally ordered macroporous （3DOM） material has been prepared by firstly preparation of hybrid 3DOM SiO2-NH2 materials using colloidal crystal method, and following... A novel glucose oxidase immobilized on three-dimensionally ordered macroporous （3DOM） material has been prepared by firstly preparation of hybrid 3DOM SiO2-NH2 materials using colloidal crystal method, and following covalent immobilization of glucose oxidase on the pore walls of the 3DOM materials. The materials were characterized by SEM, FTIR, DSC and BET techniques. SEM observation shows that the macropores are highly ordered and are interconnected by small windows. FTIR measurement shows that there are amino and organic groups in the pore walls. The surface area of the 3DOM SiO2-NH2 material is about 10.2 m2/g. The loaded amount of enzyme is increased with amino content in the materials. The immobilized enzyme has high activity, thermal stability and can be reused. 展开更多
关键词 three-dimensionally ordered macropore SiO2 glucose oxidase supported catalyst materials science
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