A dual defect co-modified S-scheme heterojunction for boosting photocatalytic CO2 reduction coupled with tetracycline oxidation

被引：79

作者：

Jia, Xuemei ^{[1
,2
]}

Hu, Cheng ^{[1
,2
]}

Sun, Haoyu ^{[1
,2
]}

Cao, Jing ^{[1
,2
]}

Lin, Haili ^{[1
,2
]}

Li, Xinyue ^{[1
,2
]}

Chen, Shifu ^{[1
,2
]}

机构：

[1] Huaibei Normal Univ, Coll Chem & Mat Sci, Huaibei 235000, Anhui, Peoples R China

[2] Huaibei Normal Univ, Minist Educ, Key Lab Green & Precise Synthet Chem & Applicat, Huaibei 235000, Anhui, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2023年 / 324卷

基金：

中国国家自然科学基金;

关键词：

Dual-defect; S-scheme; I doped BiOBr; Photocatalytic; Dual-purpose reaction system; GENERALIZED GRADIENT APPROXIMATION; SOLID-SOLUTIONS; BAND-STRUCTURE; LIGHT; BIOBR; WATER; DEGRADATION; COMPOSITES; G-C3N4;

D O I：

10.1016/j.apcatb.2022.122232

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To synchronously relieve energy shortage and wastewater remediation, herein, a dual-defect S-scheme hetero-junction of I doped BiOBr modified N vacancy g-C3N4 (labeled as IB/CNx) was designed for simultaneously photocatalytic CO2 reduction coupled with tetracycline oxidation. The 70IB/CNx presented higher photo -catalytic property for CO2 reduction coupled with TC removal than those of IB/CN, BiOBr/CNx, and BiOBr/CN. The improved photocatalytic activity was mainly attributed to the synergistic effect of doped I ions and N defects. Besides, such designed coupled reaction system presented much superior catalytic performance than those of two half-reactions, which achieved the full utilization of carriers. All in all, a dual-defect heterojunction enhanced a dual-function reaction system, in which the dual-defect active spots accelerated the transfer and separation of carriers, meanwhile, the dual-function reaction system realized the full utilization of the charges. This work highlighted the pivotal role of defect engineering to design efficient photocatalysts for environment and energy applications.

引用

页数：15

共 57 条

[1] Synthesis of one-dimensional Bi5O7Br0.5I0.5 solid solution for effective real oilfield wastewater treatment via exciton photocatalytic process [J].