Spatial Location Engineering of Oxygen Vacancies for Optimized Photocatalytic H2 Evolution Activity

被引：160

作者：

Bi, Wentuan ^{[1
,2
]}

Ye, Chunmiao ^{[1
,2
]}

Xiao, Chong ^{[1
,2
]}

Tong, Wei ^{[3
]}

Zhang, Xiaodong ^{[1
,2
]}

Shao, Wei ^{[1
,2
]}

Xie, Yi ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Collaborat Innovat Ctr Chem Energy Mat, Hefei 230026, Anhui, Peoples R China

[3] Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Anhui, Peoples R China

来源：

SMALL | 2014年 / 10卷 / 14期

基金：

中国国家自然科学基金;

关键词：

GRAPHITIC CARBON NITRIDE; ELECTRONIC-STRUCTURE; HYDROGEN-PRODUCTION; WATER; DESIGN; PERFORMANCE; CATALYSIS; GRAPHENE; INSIGHTS;

D O I：

10.1002/smll.201303548

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Enhanced H2 evolution efficiency is achieved via manipulating the spatial location of oxygen vacancies in niobates. The ultrathin K 4Nb6O17 nanosheets which are rich in surface oxygen vacancies show enhanced optical absorption and band gap narrowing. Meanwhile, the fast charge separation effectively reduces the probability of hole-electron recombination, enabling 20 times hydrogen evolution rate compared with the defect-free bulk counterpart. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：2820 / 2825

页数：6

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