WO@WS核壳纳米结构的合成：基于溶液的硫化法以提高水分解性能

Lai Jianming, Wang Bingjie, Gong Yuedong, Sun Chenwei, Wang Weilin, Yang Weiguang

Department of Electronic Information Materials, School of Materials Science and Engineering, Shanghai University Shanghai 200444 China.

Zhejiang Institute of Advanced Materials, SHU Jiashan 314113 China.

RSC Adv. 2023 Jan 31;13(7):4150-4155. doi: 10.1039/d2ra06354a.

High light absorption capacity and excellent charge transportation are significant for superior water-splitting performance. Here, WO/WS core-shell nanowire arrays were fabricated using a two-step hydrothermal method. The crystal phase, morphology, crystal structure, chemical composition, and optical properties were characterized using XRD, SEM, TEM, XPS, and UV-vis spectroscopy. Consequently, the photocurrent density of the as-prepared WO/WS photoanode was 0.91 mA cm (at 1.23 V RHE), which showed a 112% increase compared to that with pristine WO. The enhanced photoelectrochemical performance, we believe, was due to the promoted light response and improved separation as well as transportation at the WO/WS interface.

高光吸收能力和优异的电荷传输对于卓越的水分解性能至关重要。在此，采用两步水热法制备了WO/WS核壳纳米线阵列。使用XRD、SEM、TEM、XPS和紫外可见光谱对其晶相、形态、晶体结构、化学成分和光学性质进行了表征。因此，所制备的WO/WS光阳极的光电流密度为0.91 mA cm（在1.23 V RHE下），与原始WO相比增加了112%。我们认为，光电化学性能的增强归因于WO/WS界面处光响应的促进、分离的改善以及传输的提高。