标题：Ultrafine Si nanowires/Sn3O4 nanosheets 3D hierarchical heterostructured array as a photoanode with high-efficient photoelectrocatalytic performance
作者：Yang, Ruiqi; Ji, Yanchen; Li, Qiang; Zhao, Zhenhuan; Zhang, Ruitong; Liang, Linlin; Liu, Fan; Chen, Yuke; Han, Shuwei; Yu, Xin; Li 更多 作者机构：[Yang, Ruiqi; Ji, Yanchen; Zhang, Ruitong; Liang, Linlin; Liu, Fan; Chen, Yuke; Han, Shuwei; Yu, Xin; Liu, Hong] Jinan Univ, Inst Adv Interdisciplinar 更多
通讯作者：Yu, X;Liu, H
通讯作者地址：[Yu, X; Liu, H]Jinan Univ, Inst Adv Interdisciplinary Res iAIR, Jinan 250022, Shandong, Peoples R China.
来源：APPLIED CATALYSIS B-ENVIRONMENTAL
关键词：Photoelectrocatalysis; Ultrafine Si nanowire/Sn3O4 nanosheet;; Photoanode; Hydrogen generation; Photoelectrocatalytic degradation
摘要：Constructing a high performance three-dimensional (3D) semiconductor photoelectrode for photoelectrocatalytic hydrogen (H-2) production by water splitting is a promising method to resolve the current energy and environmental issues. Here, a ultrafine Si nanowires/Sn3O4 nanosheet (SiNWs/Sn3O4) 3D hierarchical heterostructured photoanode was synthesized via a facile approach with a metal-assisted chemical etching step following an in situ hydrothermal synthesis process. The ultrafine SiNWs/Sn3O4 3D hierarchical heterostructured photoanode exhibits significantly enhanced photoelectrochemical activity, and its photocurrent density is 8 times higher than that of single phase structures of SiNWs. This increase of catalytic activity may be attributed to the enhancement of the full-spectrum light absorption, decrease of the photocarrier recombination rate and a low transmission resistance at the catalyst/electrolyte interface. This work provides a novel design for preparing highly efficient Si based 3D heterostructured catalysts for the production of clean energy.