PbS Nanoparticle Sensitized ZnO Nanowire Arrays to Enhance Photocurrent for Water Splitting

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• 作者：Xianchang Li ; Jianxin Li ; Chaojun Cui ; Zhendong Liu ; Yongsheng Niu
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：March 3, 2016
• 年：2016
• 卷：120
• 期：8
• 页码：4183-4188
• 全文大小：475K
• ISSN：1932-7455

文摘

Improving the visible-light absorption is one of the key ways to optimize the photoelectrochemical performance of zinc oxide (ZnO) nanowire arrays (NWs). In this study, as-synthesized PbS nanoparticles (NPs), which are adsorbed onto ZnO NWs through a dip-coating method, are used to enhance the photocurrent of the ZnO NW photoelectrochemical anode for water splitting. The morphology crystalline nature and optical properties of the ZnO NWs and PbS nanoparticles (NPs) were characterized by TEM, HRTEM, XRD, and UV-NIR absorption spectra. The hybrid anode exhibits a significant photocurrent density enhancement which is about ten times larger than that of pristine ZnO NWs. Moreover, we believe through some effective modifications there is ample room for improvement of the photoelectrochemical performance of the PbS NP sensitized ZnO NW photoanode that can be achieved.