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Carving the shell thickness of tungsten trioxide hollow multi-shelled structures for enhanced photocatalytic performance
Zhang, Xing1; He, Yilei1; Wei, Yanze2; Yu, Ranbo1,3
2021-09-09
Source PublicationMATERIALS CHEMISTRY FRONTIERS
Pages8
AbstractAs a special hierarchical architecture, the use of the hollow multi-shelled structure (HoMS) is a new approach to greatly enhance the photocatalytic activity of materials. Precise tailoring of the shell structure in HoMSs is challenging, and its effects on the optical and electrical properties remain obscure. Herein, as a potential high-performance water oxidation photocatalyst, tungsten trioxide (WO3) HoMSs with up to three shell numbers have been successfully fabricated. Furthermore, the accurate control of the shell thickness was realized in the range from 35 to 90 nm by optimizing the amount and distribution of tungsten ions adsorbed within carbonaceous microsphere templates. All as-synthesized WO3 HoMSs showed excellent activities in photocatalytic water oxidation superior to WO3 nanoparticles. Moreover, the effects of shell thickness on photocatalytic proceedings were thoroughly investigated. Although the thick-shelled (thick-3) WO3 HoMSs have a better light-harvesting performance, thin triple-shelled (thin-3) ones expressed higher photocatalytic activity owing to the increased charge-carrier separation/transfer efficiency and larger specific areas. Consequently, the remarkable photocatalytic water oxidation activity up to 907 mu mol g(-1) h(-1) with an apparent quantum efficiency of 6.3% was achieved by thin-3 WO3 HoMSs, showing the highest values among reported WO3 photocatalysts. Moreover, the mechanism clarification for modulating the shell thickness and the effect of the shell thickness on performance will be a valuable reference for further designing and synthesizing new nanostructures for highly efficient solar energy conversion.
DOI10.1039/d1qm01124c
Language英语
WOS KeywordPHOTOELECTROCHEMICAL CELLS ; GENERATION ; EFFICIENCY ; SPHERES ; OXIDE
Funding ProjectNational Natural Science Foundation of China[51872024] ; National Natural Science Foundation of China[51932001] ; Shandong Provincial Natural Science Foundation[ZR2020QB109]
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; Shandong Provincial Natural Science Foundation
WOS IDWOS:000704613600001
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50325
Collection中国科学院过程工程研究所
Corresponding AuthorWei, Yanze; Yu, Ranbo
Affiliation1.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Dept Phys Chem, 30 Xueyuan Rd, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, 1 North 2nd St, Beijing 100190, Peoples R China
3.Zhengzhou Univ, Key Lab Adv Mat Proc & Mold, Minist Educ, Zhengzhou 450002, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xing,He, Yilei,Wei, Yanze,et al. Carving the shell thickness of tungsten trioxide hollow multi-shelled structures for enhanced photocatalytic performance[J]. MATERIALS CHEMISTRY FRONTIERS,2021:8.
APA Zhang, Xing,He, Yilei,Wei, Yanze,&Yu, Ranbo.(2021).Carving the shell thickness of tungsten trioxide hollow multi-shelled structures for enhanced photocatalytic performance.MATERIALS CHEMISTRY FRONTIERS,8.
MLA Zhang, Xing,et al."Carving the shell thickness of tungsten trioxide hollow multi-shelled structures for enhanced photocatalytic performance".MATERIALS CHEMISTRY FRONTIERS (2021):8.
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