Simultaneous sensitization and hole activation in carbon nitride polymer sensitized TiO2

被引：19
作者：
Guo, Yong [1 ,2 ]
Kong, Fei [1 ,2 ]
Chu, Sheng [1 ,2 ]
Luo, Leilei [1 ,2 ]
Yang, Juncheng [2 ]
Wang, Ying [1 ,2 ]
Zou, Zhigang [1 ]
机构：
[1] Nanjing Univ, Ecomat & Renewable Energy Res Ctr, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China
来源：
RSC ADVANCES | 2012年 / 2卷 / 13期
关键词：
ELECTRONIC-STRUCTURE; CRYSTALLINE; WATER;
D O I：
10.1039/c2ra20253k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Experimental and theoretical methods have combined to explore the role of carbon nitride polymer (CNP) in the photocatalytic performance of CNP-sensitized TiO2 (P25). In this work, CNP rather than its precursors has been used to directly sensitize TiO2 at 170 degrees C based on acid-base interaction and the photocatalytic performance of CNP-sensitized TiO2 is evaluated by degradation of methyl orange under visible light irradiation. The obtained results show the photocatalytic performance of CNP-sensitized TiO2 is obviously stronger than TiO2 and CNP. The high performance results not only from transferring the photoinduced electrons from CNP to the conductivity band (CB) of TiO2 and the increased separation efficiency of photoinduced electrons and holes, but also possibly from hole activation. Hole activation may result from the interaction between TiO2 and CNP, which increases the oxidation ability of the photoinduced hole that leaves the CNP skeleton after light irradiation.
引用
收藏
页码：5585 / 5590
页数：6
相关论文
共 26 条
[1]   Catalysis research of relevance to carbon management: Progress, challenges, and opportunities [J].
Arakawa, H ;
Aresta, M ;
Armor, JN ;
Barteau, MA ;
Beckman, EJ ;
Bell, AT ;
Bercaw, JE ;
Creutz, C ;
Dinjus, E ;
Dixon, DA ;
Domen, K ;
DuBois, DL ;
Eckert, J ;
Fujita, E ;
Gibson, DH ;
Goddard, WA ;
Goodman, DW ;
Keller, J ;
Kubas, GJ ;
Kung, HH ;
Lyons, JE ;
Manzer, LE ;
Marks, TJ ;
Morokuma, K ;
Nicholas, KM ;
Periana, R ;
Que, L ;
Rostrup-Nielson, J ;
Sachtler, WMH ;
Schmidt, LD ;
Sen, A ;
Somorjai, GA ;
Stair, PC ;
Stults, BR ;
Tumas, W .
CHEMICAL REVIEWS, 2001, 101 (04) :953-996
[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]   Study of the surface acidity of TiO2/SiO2 catalysts by means of FTIR measurements of CO and NH3 adsorption [J].
Bonelli, B. ;
Cozzolino, M. ;
Tesser, R. ;
Di Serio, M. ;
Piumetti, M. ;
Garrone, E. ;
Santacesaria, E. .
JOURNAL OF CATALYSIS, 2007, 246 (02) :293-300
[4]   H-1 NMR spectroscopy of titania - Chemical shift assignments for hydroxy groups in crystalline and amorphous forms of TiO2 [J].
Crocker, M ;
Herold, RHM ;
Wilson, AE ;
Mackay, M ;
Emeis, CA ;
Hoogendoorn, AM .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (15) :2791-2798
[5]  
Frisch M., 2004, GAUSSIAN 03 REVISION, DOI DOI 10.1016/J.MOLSTRUC.2017.03.014
[6]   TiO2 photocatalysis and related surface phenomena [J].
Fujishima, Akira ;
Zhang, Xintong ;
Tryk, Donald A. .
SURFACE SCIENCE REPORTS, 2008, 63 (12) :515-582
[7]   Synthesis of TiO2 Nanocrystals with a High Affinity for Amine Organic Compounds [J].
Goncalves, Ricardo H. ;
Schreiner, Wido Herwig ;
Leite, Edson R. .
LANGMUIR, 2010, 26 (14) :11657-11662
[8]   Developing a polymeric semiconductor photocatalyst with visible light response [J].
Guo, Yong ;
Chu, Sheng ;
Yan, Shicheng ;
Wang, Ying ;
Zou, Zhigang .
CHEMICAL COMMUNICATIONS, 2010, 46 (39) :7325-7327
[9]   TiO2-assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations - A review [J].
Konstantinou, IK ;
Albanis, TA .
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY, 2004, 49 (01) :1-14
[10]   Heterogeneous photocatalyst materials for water splitting [J].
Kudo, Akihiko ;
Miseki, Yugo .
CHEMICAL SOCIETY REVIEWS, 2009, 38 (01) :253-278
123