Synthesis and photocatalytic activity of a bentonite/g-C3N4 composite

被引：83
作者：
Li, Yeping [1 ]
Zhan, Jian [1 ]
Huang, Liying [2 ]
Xu, Hui [2 ]
Li, Huaming [2 ]
Zhang, Rongxian [2 ]
Wu, Shilong [1 ]
机构：
[1] Jiangsu Univ, Sch Pharm, Zhenjiang 212013, Peoples R China
[2] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 23期
关键词：
GRAPHITIC CARBON NITRIDE; HYDROGEN-EVOLUTION; G-C3N4; ADSORPTION; ENHANCEMENT; DEGRADATION; CLAY; DYE; PHOTODEGRADATION; NANOCOMPOSITE;
D O I：
10.1039/c3ra46818f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Novel bentonite/g-C3N4 composite photocatalysts were synthesized through a conventional calcination method and systematically characterized by thermogravimetric analysis (TG), powder X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-vis diffuse reflection spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) and photocurrent-time measurement (PT). The optimal sample bentonite/g-C3N4 (5.4%) composite shows an enhanced photocurrent value (about 8 times as high as that of g-C3N4) under visible light irradiation and high efficiency for the degradation of methylene blue (the photoreaction kinetics constant value is about 2.5 times that of g-C3N4) under visible light. Results show the improved photoactivity is mainly attributed to the electrostatic interaction between g-C3N4 and negatively charged bentonite, this leads to the efficient migration of the photogenerated electrons and holes of g-C3N4. This study reports an inexpensive and environmentally friendly photocatalyst for pollution degradation and prospective photoelectric materials.
引用
收藏
页码：11831 / 11839
页数：9
相关论文
共 55 条
[1]   Photocatalytic Activity Enhanced via g-C3N4 Nanoplates to Nanorods [J].
Bai, Xiaojuan ;
Wang, Li ;
Zong, Ruilong ;
Zhu, Yongfa .
JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (19) :9952-9961
[2]   Photodegradation of RhB over YVO4/g-C3N4 composites under visible light irradiation [J].
Cai, Jun ;
He, Yiming ;
Wang, Xiaoxing ;
Zhang, Lihong ;
Dong, Lvzhuo ;
Lin, Hongjun ;
Zhao, Leihong ;
Yi, Xiaodong ;
Weng, Weizheng ;
Wan, Huilin .
RSC ADVANCES, 2013, 3 (43) :20862-20868
[3]   A g-C3N4/BiOBr visible-light-driven composite: synthesis via a reactable ionic liquid and improved photocatalytic activity [J].
Di, Jun ;
Xia, Jiexiang ;
Yin, Sheng ;
Xu, Hui ;
He, Minqiang ;
Li, Huaming ;
Xu, Li ;
Jiang, Yuanping .
RSC ADVANCES, 2013, 3 (42) :19624-19631
[4]   Efficient synthesis of polymeric g-C3N4 layered materials as novel efficient visible light driven photocatalysts [J].
Dong, Fan ;
Wu, Liwen ;
Sun, Yanjuan ;
Fu, Min ;
Wu, Zhongbiao ;
Lee, S. C. .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (39) :15171-15174
[5]   An investigation of Cu(II) adsorption by raw and acid-activated bentonite: A combined potentiometric, thermodynamic, XRD, IR, DTA study [J].
Eren, E. ;
Afsin, B. .
JOURNAL OF HAZARDOUS MATERIALS, 2008, 151 (2-3) :682-691
[6]   Ball milled h-BN: An efficient holes transfer promoter to enhance the photocatalytic performance of TiO2 [J].
Fu, Xianliang ;
Hu, Yingfei ;
Yang, Yunguang ;
Liu, We ;
Chen, Shifu .
JOURNAL OF HAZARDOUS MATERIALS, 2013, 244 :102-110
[7]   Synthesis and photochemical properties of semiconductor pillared layered compounds [J].
Fujishiro, Y ;
Uchida, S ;
Sato, T .
INTERNATIONAL JOURNAL OF INORGANIC MATERIALS, 1999, 1 (01) :67-72
[8]   Enhanced visible light photocatalytic activity of novel polymeric g-C3N4 loaded with Ag nanoparticles [J].
Ge, Lei ;
Han, Changcun ;
Liu, Jing ;
Li, Yunfeng .
APPLIED CATALYSIS A-GENERAL, 2011, 409 :215-222
[9]   Chemical synthesis of mesoporous carbon nitrides using hard templates and their use as a metal-free catalyst for friedel-crafts reaction of benzene [J].
Goettmann, Frederic ;
Fischer, Anna ;
Antonietti, Markus ;
Thomas, Arne .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (27) :4467-4471
[10]   Efficient degradation of RhB over GdVO4/g-C3N4 composites under visible-light irradiation [J].
He, Yiming ;
Cai, Jun ;
Li, Tingting ;
Wu, Ying ;
Lin, Hongjun ;
Zhao, Leihong ;
Luo, Mengfei .
CHEMICAL ENGINEERING JOURNAL, 2013, 215 :721-730
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