Simulation-guided synthesis of graphitic carbon nitride beads with 3D interconnected and continuous meso/macropore channels for enhanced light absorption and photocatalytic performance

被引:70
作者
Li, Yudong [1 ]
Jiang, Yanqiu [1 ]
Ruan, Zhaohui [2 ]
Lin, Kaifeng [1 ]
Yu, Zhuobin [3 ]
Zheng, Zhanfeng [3 ]
Xu, Xianzhu [1 ]
Yuan, Yuan [2 ]
机构
[1] Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Heilongjiang, Peoples R China
[2] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
[3] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
OXYGEN REDUCTION REACTION; ONE-POT SYNTHESIS; VISIBLE-LIGHT; HYDROGEN EVOLUTION; FACILE SYNTHESIS; STRUCTURAL-PROPERTIES; ASSISTED SYNTHESIS; MESOPOROUS G-C3N4; WATER; FABRICATION;
D O I
10.1039/c7ta06626k
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
An optical simulation is adopted to examine the effects of the pore channels with different sizes and architectures on the ability of light absorption in photocatalysts. The simulation results are utilized to guide the synthesis of a novel porous graphitic carbon nitride (g-C3N4) material in bead form, using millimeter-scale porous SiO2 beads as a template. The obtained g-C3N4 beads possess a unique porous architecture with 3D interconnected and continuous meso/macropore channels at 30-90 nm in size, which is identical to the simulation result. Compared with pristine g-C3N4, the prepared material exhibits significantly enhanced visible light-induced catalytic performances for H-2 evolution (8 times), photoreduction of nitrobenzene (3 times) and degradations of rhodamine B (4 times), methyl orange (2 times) and phenol (3 times). The unique pores and skeleton structures not only promote light penetration inside the material and light absorption at the edge of pore channels, but also improve mass transfer and inhibit the recombination of photogenerated electrons and holes. Moreover, this optical simulation approach could be adopted to guide the synthesis of other porous photocatalysts, and to verify their light absorption and infiltration properties in photocatalysis.
引用
收藏
页码:21300 / 21312
页数:13
相关论文
共 84 条
[1]  
[Anonymous], 2017, ADV MATER
[2]   Ionothermal Synthesis of Crystalline, Condensed, Graphitic Carbon Nitride [J].
Bojdys, Michael J. ;
Mueller, Jens-Oliver ;
Antonietti, Markus ;
Thomas, Arne .
CHEMISTRY-A EUROPEAN JOURNAL, 2008, 14 (27) :8177-8182
[3]   CRITICAL-REVIEW OF RATE CONSTANTS FOR REACTIONS OF HYDRATED ELECTRONS, HYDROGEN-ATOMS AND HYDROXYL RADICALS (.OH/.O-) IN AQUEOUS-SOLUTION [J].
BUXTON, GV ;
GREENSTOCK, CL ;
HELMAN, WP ;
ROSS, AB .
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1988, 17 (02) :513-886
[4]  
Chang J, 2013, ADV FUNCT MATER, V23, P5074, DOI [10.1002/adfm201301851, 10.1002/adfm.201301851]
[5]   Semiconductor-mediated photodegradation of pollutants under visible-light irradiation [J].
Chen, Chuncheng ;
Ma, Wanhong ;
Zhao, Jincai .
CHEMICAL SOCIETY REVIEWS, 2010, 39 (11) :4206-4219
[6]   Deep blue organic light-emitting devices enabled by bipolar phenanthro[9,10-d]imidazole derivatives [J].
Chen, Shuo ;
Wu, Yukun ;
Zhao, Yi ;
Fang, Daining .
RSC ADVANCES, 2015, 5 (88) :72009-72018
[7]   Ordered Mesoporous SBA-15 Type Graphitic Carbon Nitride: A Semiconductor Host Structure for Photocatalytic Hydrogen Evolution with Visible Light [J].
Chen, Xiufang ;
Jun, Young-Si ;
Takanabe, Kazuhiro ;
Maeda, Kazuhiko ;
Domen, Kazunari ;
Fu, Xianzhi ;
Antonietti, Markus ;
Wang, Xinchen .
CHEMISTRY OF MATERIALS, 2009, 21 (18) :4093-4095
[8]   Recent developments in photocatalytic water treatment technology: A review [J].
Chong, Meng Nan ;
Jin, Bo ;
Chow, Christopher W. K. ;
Saint, Chris .
WATER RESEARCH, 2010, 44 (10) :2997-3027
[9]   Band Structure Engineering of Carbon Nitride: In Search of a Polymer Photocatalyst with High Photooxidation Property [J].
Chu, Sheng ;
Wang, Ying ;
Guo, Yong ;
Feng, Jianyong ;
Wang, Cuicui ;
Luo, Wenjun ;
Fan, Xiaoxing ;
Zou, Zhigang .
ACS CATALYSIS, 2013, 3 (05) :912-919
[10]   Synthesis of macrostructured MCM-48 molecular sieves [J].
Danumah, C ;
Vaudreuil, S ;
Bonneviot, L ;
Bousmina, M ;
Giasson, S ;
Kaliaguine, S .
MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 44 :241-247