Honeycomb-like carbon nitride through supramolecular preorganization of monomers for high photocatalytic performance under visible light irradiation

被引:50
作者
Huang, Jinhui [1 ,2 ]
Cheng, Wenjian [1 ,2 ]
Shi, Yahui [1 ,2 ]
Zeng, Guangming [1 ,2 ]
Yu, Hanbo [1 ,2 ]
Gu, Yanling [1 ,2 ]
Shi, Lixiu [1 ,2 ]
Yi, Kaixin [1 ,2 ]
机构
[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
Photocatalysis; Honeycomb-like C3N4; Dimethyl sulfoxide; Water purification; Charge transfer; WASTE-WATER TREATMENTS; ONE-POT SYNTHESIS; HYDROGEN-PRODUCTION; DOPED G-C3N4; TRANSFER PROPERTY; CHARGE-TRANSFER; DEGRADATION; DRIVEN; EFFICIENCY; NANOSHEETS;
D O I
10.1016/j.chemosphere.2018.07.171
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A metal-free modified carbon nitride MCU(DMSO)-C3N4 (3:3:1) with a honeycomb-like morphology was prepared via firstly introducing cyanuric acid and urea into melamine in dimethyl sulfoxide (DMSO) as the precursor for the MCU-C3N4. A variety of characterization methods, including XRD, XPS, FT-IR, SEM, TEM, UV-vis, photoluminescence (PL), and photocurrent generation, were applied to investigate the structure, morphology, optical, and photoelectrochemical properties of the g-C3N4 and MCU-C3N4 (3:3:1). Rhodamine B (RhB), methylene blue (MB), and bisphenol A (BPA) were selected as target pollutants to evaluate photocatalytic activity of the MCU-C3N4 (3:3:1) under visible light irradiation. MCU-C3N4 (3:3:1) exhibits significantly enhanced photocatalytic activity compared with g-C3N4, where 99.49% RhB is removed within 40min, 97.7% MB is removed within 80 min, and 84.37% BPA is removed within 90 min. The improved photodegradation efficiency was mainly due to the larger surface area, the stronger REDOX ability, and the increased separation efficiency of photogenerated electron-hole pairs. The active radical trapping experiments and electron spin resonance tests indicated that h(+) and center dot O-2(-) radicals were the dominant active species whereas center dot OH radicals could be a minor factor. A possible photocatalytic mechanism is proposed. This strategy here provides an ideal platform for the design of photocatalysts with large surface area and high porosity for various pollutant controlling applications. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码:324 / 334
页数:11
相关论文
共 68 条
[1]   Enhanced visible light photocatalytic water reduction from a g-C3N4/SrTa2O6 heterojunction [J].
Adhikari, Shiba P. ;
Hood, Zachary D. ;
Wang, Hui ;
Peng, Rui ;
Krall, Alex ;
Li, Hui ;
Chen, Vincent W. ;
More, Karren L. ;
Wu, Zili ;
Geyer, Scott ;
Lachgar, Abdou .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 217 :448-458
[3]  
Asadzadeh-Khaneghah S., 2018, SEPAR PURIF TECHNOL, V199
[4]   Graphitic carbon nitride nanosheets coupled with carbon dots and BiOI nanoparticles: Boosting visible-light-driven photocatalytic activity [J].
Asadzadeh-Khaneghah, Soheila ;
Habibi-Yangjeh, Aziz ;
Seifzadeh, Davod .
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, 2018, 87 :98-111
[5]  
Chandra D., 2013, ANGEW CHEM, V125, P12838
[6]   A facile modification of g-C3N4 with enhanced photocatalytic activity for degradation of methylene blue [J].
Chang, Fei ;
Xie, Yunchao ;
Li, Chenlu ;
Chen, Juan ;
Luo, Jieru ;
Hu, Xuefeng ;
Shen, Jiaowen .
APPLIED SURFACE SCIENCE, 2013, 280 :967-974
[7]  
Chen J. J., 2015, ACS APPL MAT INTERFA, V7
[8]   Mesoporous TiO2 single crystals delivering enhanced mobility and optoelectronic device performance [J].
Crossland, Edward J. W. ;
Noel, Nakita ;
Sivaram, Varun ;
Leijtens, Tomas ;
Alexander-Webber, Jack A. ;
Snaith, Henry J. .
NATURE, 2013, 495 (7440) :215-219
[9]   Advanced photocatalytic performance of graphene-like BN modified BiOBr flower-like materials for the removal of pollutants and mechanism insight [J].
Di, Jun ;
Xia, Jiexiang ;
Ji, Mengxia ;
Wang, Bin ;
Yin, Sheng ;
Zhang, Qi ;
Chen, Zhigang ;
Li, Huaming .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2016, 183 :254-262
[10]   Phosphorus-Doped Carbon Nitride Tubes with a Layered Micro-nanostructure for Enhanced Visible-Light Photocatalytic Hydrogen Evolution [J].
Guo, Shien ;
Deng, Zhaopeng ;
Li, Mingxia ;
Jiang, Baojiang ;
Tian, Chungui ;
Pan, Qingjiang ;
Fu, Honggang .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2016, 55 (05) :1830-1834