Au Cu alloys deposited on titanium dioxide nanosheets for efficient photocatalytic hydrogen evolution
Au Cu alloys deposited on titanium dioxide nanosheets for efficient photocatalytic hydrogen evolution
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沉积在二氧化钛纳米片上的金铜合金可有效光催化析氢
DOI:
10.1016/j.ijhydene.2018.06.078
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发表时间:
2018-08
影响因子:
7.2
通讯作者:
Zhao Jinsheng
中科院分区:
文献类型:
--
作者:
Zeng Dedong;Yang Liming;Zhou Panpan;Hu Dongsheng;Xie Yu;Li Shiqi;Jiang Liushan;Ling Yun;Zhao Jinsheng
This work first reports Ausingle bondCu alloys deposited on the surface of TiO2nanosheets (TiNs) to form heterojunction. A simple deposition-precipitation method was used to construct a new type of Ausingle bondCu/TiNs heterostructures through gradually depositing Au and Cu nanoparticles on TiNs. Such structures served the dual advantage of constructing a heterostructure which can improve visible light absorption, and the formation of a Schottky barrier between Ausingle bondCu alloys (lower Fermi level) and TiNs (higher Fermi level) which can suppress the recombination of photo-generated charge carriers to improve the overall photocatalytic activity. The mass ratio of Au and Cu in the Ausingle bondCu/TiNs heterostructures and the sequence and method of their deposition are found to be the important factors which affect the photocatalytic performance. When the mass ratio of Au to Cu was determined to be 1: 1, the Ausingle bondCu/TiNs heterostructure exhibited the best photocatalytic performance for hydrogen production from water splitting (over 9 times than TiNs, 1.47 times than Au/TiNs, and 1.75 times than Cu/TiNs).
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影响因子:
11.4
作者:
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通讯作者:
Raston, Colin L.
影响因子:
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29.4
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通讯作者:
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22.1
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通讯作者:
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