Citation: Lingfeng Li, Xiaolong Zhao, Donglai Pan, Guisheng Li. Nanotube array-like WO₃/W photoanode fabricated by electrochemical anodization for photoelectrocatalytic overall water splitting[J]. Chinese Journal of Catalysis, ;2017, 38(12): 2132-2140. doi: 10.1016/S1872-2067(17)62948-6 shu

Nanotube array-like WO₃/W photoanode fabricated by electrochemical anodization for photoelectrocatalytic overall water splitting

Key Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, College of Life and Environmental Science, Shanghai Normal University, Shanghai 200234, China

Received Date: 9 October 2017
Revised Date: 27 October 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (21207090, 21477079, 21261140333), PCSIRT (IRT1269), and a scheme administrated by Shanghai Normal University (DXL122, and S30406).

Photoactive WO₃ is attractive as a photocatalyst for green energy evolution through water splitting. In the present work, an electrochemical anodic oxidation method was used to fabricate a photo-responsive nanotube array-like WO₃/W (NA-WO₃/W) photoanode from W foil as a precursor. Compared with a reference commercial WO₃/W electrode, the NA-WO₃/W photoanode exhibited enhanced and stable photoelectrocatalytic (PEC) activity for visible-light-driven water splitting with a typical H₂/O₂ stoichiometric ratio of 2:1 and quantum efficiency of approximately 5.23% under visible-light irradiation from a light-emitting diode (λ=420 nm, 15 mW/cm²). The greatly enhanced PEC performance of the NA-WO₃/Wphotoanode was attributed to its fast electron-hole separation rate, which resulted from the one-dimensional nanotube array-like structure, high crystallinity of monoclinic WO₃, and strong interaction between WO₃ and W foil. This work paves the way to a facile route to prepare highly active photoelectrodes for solar light transfer to chemical energy.
- WO₃,
- W foil,
- Electrochemical anodization,
- Nanotube arrays,
- Photoelectrocatalysis,
- Water splitting
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Nanotube array-like WO3/W photoanode fabricated by electrochemical anodization for photoelectrocatalytic overall water splitting

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通讯作者: 陈斌, bchen63@163.com

Nanotube array-like WO₃/W photoanode fabricated by electrochemical anodization for photoelectrocatalytic overall water splitting