Facile synthesis of carbon- and oxygen-rich graphitic carbon nitride with enhanced visible-light photocatalytic activity

被引：29

作者：

Chan, Donald K. L. ^{[1
,2
]}

Yu, Jimmy C. ^{[1
,2
]}

机构：

[1] Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China

[2] Chinese Univ Hong Kong, Shenzhen Res Inst, Shenzhen, Peoples R China

来源：

CATALYSIS TODAY | 2018年 / 310卷

基金：

中国国家自然科学基金;

关键词：

Carbon nitride; Carbon- and oxygen- rich; Exfoliation; Visible-light photocatalysis; Hydrogen evolution; HYDROGEN EVOLUTION; TIO2; PHOTOCATALYST; ORGANIC POLLUTANTS; QUANTUM DOTS; WATER; G-C3N4; DEGRADATION; GRAPHENE; PREPARE; SURFACE;

D O I：

10.1016/j.cattod.2017.05.017

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A facile method has been developed for the preparation of g-C3N4 with increased specific surface area and visible light absorption. Carbon-and oxygen-rich graphitic carbon nitride (C, O-g-C3N4) were fabricated by heating thiourea with a small quantity of citric acid. The products were then exfoliated by thermal oxidation of C, O-g-C3N4 in air. Both specific surface area and optical absorption increased with the incorporation of carbon and oxygen. Exfoliated C, O-g-C3N4 exhibited significantly enhanced photocurrent and excellent photocatalytic performance in hydrogen evolution reaction under visible-light irradiation.

引用

页码：26 / 31

页数：6

共 51 条

[1] Semiconductor clusters, nanocrystals, and quantum dots [J].

Alivisatos, AP .

SCIENCE, 1996, 271 (5251) :933-937

[2] Polymeric Photocatalysts Based on Graphitic Carbon Nitride [J].

Cao, Shaowen ;

Low, Jingxiang ;

Yu, Jiaguo ;

Jaroniec, Mietek .

ADVANCED MATERIALS, 2015, 27 (13) :2150-2176

[3] Molecular and textural engineering of conjugated carbon nitride catalysts for selective oxidation of alcohols with visible light [J].

Chen, Yan ;

Zhang, Jinshui ;

Zhang, Mingwen ;

Wang, Xinchen .

CHEMICAL SCIENCE, 2013, 4 (08) :3244-3248

[4] Photocatalytic Activity for Hydrogen Evolution of Electrospun TiO2 Nanofibers [J].

Chuangchote, Surawut ;

Jitputti, Jaturong ;

Sagawa, Takashi ;

Yoshikawa, Susumu .

ACS APPLIED MATERIALS & INTERFACES, 2009, 1 (05) :1140-1143

[5] Template-free synthesis of graphitic carbon nitride hollow spheres for photocatalytic degradation of organic pollutants [J].

Cui, Yanjuan ;

Tang, Yubin ;

Wang, Xinchen .

MATERIALS LETTERS, 2015, 161 :197-200

[6] Enhanced photocatalytic H2 evolution over CdS/Au/g-C3N4 composite photocatalyst under visible-light irradiation [J].

Ding, Xiaoling ;

Li, Yingxuan ;

Zhao, Jie ;

Zhu, Yunqing ;

Li, Yan ;

Deng, Wenye ;

Wang, Chuanyi .

APL MATERIALS, 2015, 3 (10)

[7] Enhanced visible light photocatalytic activity and oxidation ability of porous graphene-like g-C3N4 nanosheets via thermal exfoliation [J].

Dong, Fan ;

Li, Yuhan ;

Wang, Zhenyu ;

Ho, Wing-Kei .

APPLIED SURFACE SCIENCE, 2015, 358 :393-403

[8] Carbon self-doping induced high electronic conductivity and photoreactivity of g-C3N4 [J].

Dong, Guohui ;

Zhao, Kun ;

Zhang, Lizhi .

CHEMICAL COMMUNICATIONS, 2012, 48 (49) :6178-6180

[9] Nitrogen self-doped graphitic carbon nitride as efficient visible light photocatalyst for hydrogen evolution [J].

Fang, Jiawen ;

Fan, Huiqing ;

Li, Mengmeng ;

Long, Changbai .

JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (26) :13819-13826

[10] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].

FUJISHIMA, A ;

HONDA, K .

NATURE, 1972, 238 (5358) :37-+

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