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Epitaxial growth of Heteropolyacid-WO3 vertical heterostructures with photo-induced charge modulation for enhanced water oxidation

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成果类型:
期刊论文
作者:
Zhan, Faqi;Wang, Keke;Yang, Xuetao;Liu, Yisi;Yang, Yahui;...
通讯作者:
Li, Jie;Li, Wenzhang
作者机构:
[Zhan, Faqi; Li, Jie; Yang, Xuetao; Wang, Keke; Li, Wenzhang] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
[Zhan, Faqi] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China.
[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
[Liu, Yisi] Hubei Normal Univ, Inst Adv Mat, Huangshi 415000, Hubei, Peoples R China.
[Li, Dongwei] Chongqing Univ Educ, Div Sci Res Management, Chongqing 400065, Peoples R China.
通讯机构:
[Li, J; Li, WZ] C
Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
语种:
英文
关键词:
WO3 plates;Heteropolyacid;In-situ;Photoelectrochemical;Less interfacial defects
期刊:
Electrochimica Acta
ISSN:
0013-4686
年:
2019
卷:
306
页码:
96-105
基金类别:
National Nature Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21471054]; project of science and technology research program of Chongqing Education Commission of China [KJQN201801612]; Natural Science Foundation of Chongqing, ChinaNatural Science Foundation of Chongqing
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院系归属:
资源环境学院
摘要:
The charge separation and transfer are critical steps during the photoelectrochemical processes. In this paper, we focus on the interfacial properties within the heteropolyacid (denoted as PW12) modified WO3 heterojunction film synthesized by an epitaxial growth method. The characterizations show that heteropolyacid is formed on the surface of WO3 plates with less interfacial defects between PW12 and WO3. The PW12/WO3 photoanodes synthesized via the in-situ method display a photocurrent density of 0.65 mA/cm(2) at 1.23 V vs. RHE, which exhibits 1.6 times as much as the bare WO3. And the compos...

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