Novel Mesoporous Graphite Carbon Nitride/BiOI Heterojunction for Enhancing Photocatalytic Performance Under Visible-Light Irradiation

被引：307

作者：

Chang, Chun ^{[1
,2
]}

Zhu, Lingyan ^{[1
]}

Wang, Shanfeng ^{[1
]}

Chu, Xiaolong ^{[1
]}

Yue, Longfei ^{[1
]}

机构：

[1] Nankai Univ, Tianjin Key Lab Environm Remediat & Pollut Contro, Key Lab Pollut Proc & Environm Criteria, Minist Educ,Coll Environm Sci & Engn, Tianjin 300071, Peoples R China

[2] Bohai Univ, Coll Chem Chem Engn & Food Safety, Jinzhou 121013, Liaoning, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 07期

关键词：

n-type MCN/p-type BiOI heterojunction; organic-inorganic hybrid photocatalyst; photocatalysis mechanism; HYDROGEN-PRODUCTION; AQUEOUS SUSPENSION; DEGRADATION; TIO2; NANOPARTICLES; ENHANCEMENT; OXIDATION; NANOCOMPOSITE; COMPOSITE; EVOLUTION;

D O I：

10.1021/am5002597

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel organic-inorganic three-dimensional (3D) mesoporous graphite carbon nitride/BiOI (MCN/BiOI) heterojunction photocatalyst with excellent visible-light-driven photocatalytic performance was synthesized by a facile solvothermal method and used for degradation of bisphenol A (BPA) in water. After hybridization with MCN, a heterojunction was formed and the photogenerated carriers could be effectively separated by the internal electric field built at the heterojunction interface. The photocatalytic and photoelectrochemical performance of BiOI were improved and much higher than pure BiOI and MCN. The best photocatalytic performance was achieved with MCN proportion of 10%, and the k(obs) was approximately 1.6 times of pure BiOI and 3.4 times of MCN under simulated solar light irradiation, respectively. The photocurrent intensity generated by 10%-MCN/BiOI electrode was about 1.5 and 2.0 times of those induced by BiOI and MCN under visible-light irradiation, respectively. The superoxide radical species were predominant in the reaction system.

引用

页码：5083 / 5093

页数：11

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