Natural leaves-assisted synthesis of nitrogen-doped, carbon-rich nanodots-sensitized, Ag-loaded anatase TiO2 square nanosheets with dominant {001} facets and their enhanced catalytic applications

被引:67
作者
Jiang, Zhifeng [1 ]
Lv, Xiaomeng [1 ]
Jiang, Deli [1 ]
Xie, Jimin [1 ]
Mao, Danjun [1 ]
机构
[1] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China
关键词
LIGHT PHOTOCATALYTIC ACTIVITY; CODOPED TIO2; TITANIUM-DIOXIDE; DEGRADATION; PHOTOACTIVITY; NANOPARTICLES; ROUTE; HETEROJUNCTION; PERCENTAGE; PLATFORM;
D O I
10.1039/c3ta13248j
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
Extending the UV response of anatase TiO2 photocatalysts into the visible light range can play a pivotal role in promoting the practical applications of these catalysts. Nitrogen and carbon co-doped, silver loaded anatase TiO2 (Ag@NC-TiO2) single-crystal nanosheets dominated by {001} facets were prepared for the first time using leaves as the nitrogen and carbon source by a facile, low cost method. The size of the Ag particles on NC-TiO2 nanosheets can be tuned from 1.5 nm to 15 nm using a photo-reduction strategy. The synthesized Ag@NC-TiO2 nanosheets show higher photocatalytic activity in the photodecomposition of organic pollutants compared to NC-TiO2, TiO2 and P25 under visible light irradiation. The enhanced photocatalytic efficiency was ascribed to a synergistic effect between N, C and Ag. In addition, the formed Ag@NC-TiO2 heteronanosheets are highly dispersible in aqueous solution and are capable of efficient catalysis for the reduction of p-nitrophenol. The present synthesis gives a promising method of forming non-metal co-doped, metal nanoparticles (NPs) loaded anatase TiO2 with dominant {001} facets and for broad applications in catalysis and photocatalysis.
引用
收藏
页码:14963 / 14972
页数:10
相关论文
共 58 条
[1]   The preparation and characterization of highly efficient titanium oxide-based photofunctional materials [J].
Anpo, M ;
Dohshi, S ;
Kitano, M ;
Hu, Y ;
Takeuchi, M ;
Matsuoka, M .
ANNUAL REVIEW OF MATERIALS RESEARCH, 2005, 35 :1-27
[2]   Visible-light photocatalysis in nitrogen-doped titanium oxides [J].
Asahi, R ;
Morikawa, T ;
Ohwaki, T ;
Aoki, K ;
Taga, Y .
SCIENCE, 2001, 293 (5528) :269-271
[3]   N-doped TiO2 from TiCl3 for photodegradation of air pollutants [J].
Bianchi, Claudia L. ;
Cappelletti, Giuseppe ;
Ardizzone, Silvia ;
Gialanella, Stefano ;
Naldoni, Alberto ;
Oliva, Cesare ;
Pirola, Carlo .
CATALYSIS TODAY, 2009, 144 (1-2) :31-36
[4]   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
[5]   Novel Bi2S3-sensitized BiOCl with highly visible light photocatalytic activity for the removal of rhodamine B [J].
Cao, Jing ;
Xu, Benyan ;
Lin, Haili ;
Luo, Bangde ;
Chen, Shifu .
CATALYSIS COMMUNICATIONS, 2012, 26 :204-208
[6]   Carbon and nitrogen co-doped TiO2 with enhanced visible-light photocatalytic activity [J].
Chen, Daimei ;
Jiang, Zhongyi ;
Geng, Jiaqing ;
Wang, Qun ;
Yang, Dong .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2007, 46 (09) :2741-2746
[7]   The electronic origin of the visible-light absorption properties of C-, N- and S-doped TiO2 nanomaterials [J].
Chen, Xiaobo ;
Burda, Clemens .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (15) :5018-+
[8]   Theory of carbon doping of titanium dioxide [J].
Di Valentin, C ;
Pacchioni, G ;
Selloni, A .
CHEMISTRY OF MATERIALS, 2005, 17 (26) :6656-6665
[9]   Enhancement of the Visible Light Photocatalytic Activity of C-Doped TiO2 Nanomaterials Prepared by a Green Synthetic Approach [J].
Dong, Fan ;
Guo, Sen ;
Wang, Haigiang ;
Li, Xiaofang ;
Wu, Zhongbiao .
JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (27) :13285-13292
[10]   One-Step "Green" Synthetic Approach for Mesoporous C-Doped Titanium Dioxide with Efficient Visible Light Photocatalytic Activity [J].
Dong, Fan ;
Wang, Haiqiang ;
Wu, Zhongbiao .
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (38) :16717-16723