Construction of Ti3+ self-doped TiO2/BCN heterojunction with enhanced photoelectrochemical performance for water splitting

被引：6
|
作者：
Liang, Zheng [1 ]
Li, Junqi [1 ]
Lei, Nan [1 ]
Guo, Liu [1 ]
Song, Qianqian [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 / 03期
基金：
中国国家自然科学基金;
关键词：
SEMICONDUCTOR ELECTRODES; PHOTOCATALYTIC ACTIVITY; TIO2-X NANOPARTICLES; NANOTUBE ARRAYS; ANATASE TIO2; 001; FACETS; LIGHT; NANOSHEETS; NANOWIRES; DEGRADATION;
D O I：
10.1007/s10854-018-0472-4
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：
Ti3+ self-doped TiO2/BCN heterojunction (Ti3+-TiO2/BCN) was constructed via a hydrothermal method with using NaBH4 as reducing agent. The BCN nanosheets function as a good support to block the agglomeration of Ti3+-TiO2 nanoparticles, which decreased the recombination of photogenerated charge carriers. The Ti3+-TiO2/BCN sample exhibited enhanced electronic conductivity and absorption in visible light region because of the introduction of Ti3+ and oxygen vacancies (Ov). The as-prepared Ti3+-TiO2/BCN sample showed enhanced photoelectrochemical (PEC) performance as confirmed by analyses of LSV, EIS, Bode plots and M-S. Under the visible light irradiation, the optimally Ti3+ self-doped TiO2/BCN heterojunction sample yield a photocurrent density of approximate to 0.69mA/cm(2) at 1.23V versus RHE, which is over three times as high as BCN and TiO2/BCN at the same conditions.
引用
收藏
页码：2006 / 2015
页数：10
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