Ternary heterostructural BiOBr0.5I0.5/BiOBr/BiOI engineering for efficient photocatalytic NO removal via synergistic effects of enhanced carrier and exciton photocatalysis

被引：10
作者：
Shi, Xian [1 ]
Wang, Pingquan [1 ]
Wu, Yujie [2 ]
Xing, Xing [2 ]
Bai, Yang [1 ]
机构：
[1] Southwest Petr Univ, Sch Oil & Nat Gas Engn, Chengdu 610500, Sichuan, Peoples R China
[2] Drilling & Prod Technol Res Inst, Qinghai Oilfield Branch PetroChina, Dunhuang 736200, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2019年 / 30卷 / 21期
基金：
中国国家自然科学基金;
关键词：
SOLID-SOLUTION; MICROSPHERES; GRAPHENE; SURFACE; HETEROJUNCTION; NANOCOMPOSITES; DEGRADATION; FABRICATION; OXIDATION; G-C3N4;
D O I：
10.1007/s10854-019-02272-2
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：
Improvements to the degradation of NO by photocatalysts requires enhanced oxidation activity. In this work, the heterostructural photocatalyst BiOBr0.5I0.5/BiOBr/BiOI was prepared and showed enhanced photocatalytic efficiency for the removal of NO. We examined the photocatalytic removal of NO and confirmed that the improved efficiency of NO removal in our systems was due to the synergic effect of enhanced carrier and exciton photocatalysis. The superoxide and singlet oxygen generated from these two processes lead to the highly efficient removal of NO. Meanwhile, the photocatalytic NO removal mechanism of BiOBr0.5I0.5/BiOBr/BiOI was explored by in-situ FT-IR. This investigation provides a new approach to the design of efficient photocatalysts and an increased understanding of the NO removal mechanism through photocatalytic technology.
引用
收藏
页码：19154 / 19163
页数：10
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