Oxygen-Deficient Nanofiber WO3-x/WO3 Homojunction Photoanodes Synthesized via a Novel Metal Self-Reducing Method
Oxygen-Deficient Nanofiber WO3-x/WO3 Homojunction Photoanodes Synthesized via a Novel Metal Self-Reducing Method
复制标题
通过新型金属自还原方法合成的缺氧纳米纤维WO3-x/WO3同质结光阳极
DOI：
10.1021/acsami.9b13326
复制
发表时间：
2019
影响因子：
9.5
通讯作者：
Li Wenzhang
中科院分区：
文献类型：
--
作者：
Zhan Faqi;Liu Yang;Wang Keke;Yang Xuetao;Liu Min;Qiu Xiaoqing;Li Jie;Li Wenzhang
Defect engineering of semiconductors has been identified as an efficient route toward enhancing the photoelectrochemical performances. There is a security threat in the traditional hydrogen annealing process. In this work, the oxygen-defective nanofiber WO3–x/WO3homojunction photoanode was in situ-synthesized via a novel metal self-reducing method. The as-prepared photoanode exhibits 1.8 times higher solar water oxidation photocurrent density than that of the bare WO3film at 1.2 V versus Ag/AgCl. The enhanced photoelectrochemical properties originate from the effective charge separation and injection, attributed to the stronger built-in electric field created by the oxygen-deficient homojunction. Importantly, this novel method is universally applicable to synthesize oxygen-deficient semiconductor materials, including films and powders.
