A nitrogen-rich BiVO4 nanosheet photoanode for photoelectrochemical water oxidation

被引：6

作者：

Wang, Yi ^{[1
]}

Li, Junqi ^{[1
]}

Zhang, Beiyi ^{[1
]}

Hou, Wenfei ^{[1
]}

Xu, Xiaotao ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2019年 / 30卷 / 22期

关键词：

HIGHLY EFFICIENT; CHARGE SEPARATION; COBALT-PHOSPHATE; OXYGEN REDUCTION; GRAPHENE OXIDE; PERFORMANCE; NANOPARTICLES; HETEROJUNCTION; FE; PHOTOCATALYST;

D O I：

10.1007/s10854-019-02365-y

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this work, a nitrogen-rich BiVO4 nanosheet sample prepared by one-step hydrothermal method and characterized by XRD, TEM, Raman, XPS. With the introduction of N, partial oxygen atoms of BiVO4 were replaced by N to form Bi-N and V-N bonds, lead to the deviation of binding energy and the right shift of Raman peak. PEC measurements show that photocurrent density of nitrogen-rich BiVO4 photocatalyst is nearly two times higher than the pristine BiVO4, have longer electronic life and higher carrier concentration. These are mainly attributed to the Bi-N and V-N bonds are serve as the main OER catalytic active sites, and facilitate the transmission of electrons from the semiconductor surface to the FTO. The possible catalytic mechanism of nitrogen-rich BiVO4 system has also been proposed.

引用

页码：19984 / 19993

页数：10

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