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题目:

Facile approaching hierarchical CdS films as electrode toward photoelectrochemical water splitting

 

 

作者:

Xin Guo1, Junjun Zhu1, Huaixin Wei, Shuit-Tong Lee, Yanqing Li and Jianxin Tang

 

 

单位:

Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic of China

 

 

摘要:

The facile generation of hierarchical CdS films and their accompanying application comparison as efficient photocatalytic electrodes toward water splitting were successfully achieved in this study. Three hierarchical CdS films, including nanoparticle packing film (CdSP), neat film (CdSN) and homojunction film (CdSH) deposited on an indium tin oxide (ITO) substrate, were realized by virtue of chemical bath deposition (CBD), atomic layer deposition (ALD) and the well-programmed combinational deposition (PCD) protocol with the above two processes successively. The experimental details demonstrate that the CdSH film acquired from PCD affords an amazing photocatalytic boost toward water splitting, which may profit from the larger surface area and from better absorption. The adoption of CdSH film as a photocatalyst can result in up to 22.18 times or 3.34 times the enhancement of the photocurrent density compared to reference devices with a CdSP or CdSN photoelectrode, indicating the effectiveness of the excogitation of the programmed protocol. Ultraviolet photoelectron spectroscopy was utilized to elucidate the electronic structures of the CdSH bilayer photoanode, and the dependence of their directional photocurrent on the energy level alignment was also depicted. This work not only excogitates the programmed deposition protocol that may be facilely extended to the fabrication of other hierarchical nanomaterials but also gives prominence to the importance of morphology and interfacial energetic control toward enhancing catalytic efficiency.

 

 

影响因子:

3.672

 

 

分区情况:

2

 

 

链接:

http://dx.doi.org/10.1088/0957-4484/26/1/015203


 

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