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Surface Oxygen Vacancy-Dependent Electrocatalytic Activity of W18O49 Nanowires
Zhou, Huawei1; Shi, Yantao1; Dong, Qingshun1; Lin, Jian2; Wang, Aiqin2; Ma, Tingli1,3
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2014-09-04
DOI10.1021/jp504368v
Volume118Issue:35Pages:20100-20106
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordSENSITIZED SOLAR-CELLS ; NEAR-INFRARED ABSORPTION ; COUNTER ELECTRODES ; CATALYTIC-ACTIVITY ; CHARGE-TRANSFER ; TUNGSTEN-OXIDE ; LOW-COST ; NANOSTRUCTURES ; DIFFUSION ; DIOXIDE
AbstractSurface oxygen vacancies (SOVs) are the most relevant surface defects in metal oxides (MOs), and they participate in numerous physical and chemical reactions. However, information on the nature, distribution, formation, and reactivity of SOVs, as well as relationships among SOVs, is lacking. Investigating SOVs is difficult because of disturbance by the crystal phase, morphology of bulk materials, and synergistic effect between substrate and catalyst host. Herein, by clarifying the origin of SOVs and their distribution, one-dimensional (1D) tungsten oxide nanowires (NWs) with numerous SOVs were synthesized. Compared with the three-dimensional nanostructure, the high aspect ratio of ID NW exposed the SOVs on the surface of the nanostructure rather than embedding them in the bulk. To investigate accurately the effect of SOVs on electrocatalytic activity, we dearly identified how SOVs of tungsten oxide catalyst regulate iodide reduction reactions in the solar cell by in situ filling of SOVs in electrodes and maintaining the crystal phase and morphology of NWs. Iodide reduction reaction activity was notably dependent on tungsten oxide catalyst SOVs, which serve as important catalytic site descriptors. These findings may clarify the fundamental features of SOVs on metal oxides and contribute to the rational design of efficient catalysts and supports.
Language英语
WOS IDWOS:000341337700006
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145686
Collection中国科学院大连化学物理研究所
Affiliation1.Dalian Univ Technol, Sch Chem, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Kyushu Inst Technol, Grad Sch Life Sci & Syst Engn, Kitakyushu, Fukuoka 8080196, Japan
Recommended Citation
GB/T 7714
Zhou, Huawei,Shi, Yantao,Dong, Qingshun,et al. Surface Oxygen Vacancy-Dependent Electrocatalytic Activity of W18O49 Nanowires[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(35):20100-20106.
APA Zhou, Huawei,Shi, Yantao,Dong, Qingshun,Lin, Jian,Wang, Aiqin,&Ma, Tingli.(2014).Surface Oxygen Vacancy-Dependent Electrocatalytic Activity of W18O49 Nanowires.JOURNAL OF PHYSICAL CHEMISTRY C,118(35),20100-20106.
MLA Zhou, Huawei,et al."Surface Oxygen Vacancy-Dependent Electrocatalytic Activity of W18O49 Nanowires".JOURNAL OF PHYSICAL CHEMISTRY C 118.35(2014):20100-20106.
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