Synthesis of N-Doped Nano TiO2 Using Guanidine Nitrate: An Excellent Visible Light Photocatalyst

被引:12
作者
Baruwati, Babita [1 ]
Varma, Rajender S. [1 ]
机构
[1] US EPA, Sustainable Technol Div, Natl Risk Management Res Lab, Cincinnati, OH 45268 USA
关键词
N-Doped TiO2; Visible Light; Photocatalyst; Pollutant Degradation; DEGRADATION; OXIDES;
D O I
10.1166/jnn.2011.3594
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An excellent visible light active nitrogen-rich TiO2 nanocatalyst has been synthesized by using guanidine nitrate as the nitrogen source. The catalytic efficiency of the catalyst has been demonstrated by the decomposition of the dye, methyl orange (MO), and the pollutant, 2,4 dichlorophenol (DCP), under common household lightbulbs as well as sunlight. The reactions proceed faster on exposure to solar light (less than 1 h for MO and 4 h for DCP) compared with the commercial light bulbs (3 h for MO and 6 h for DCP). The catalyst could be used up to five times without loss of activity and regenerated for further use just by washing and drying at 200 degrees C.
引用
收藏
页码:2036 / 2041
页数:6
相关论文
共 25 条
[11]   Visible-light induced hydrophilicity on nitrogen-substituted titanium dioxide films [J].
Irie, H ;
Washizuka, S ;
Yoshino, N ;
Hashimoto, K .
CHEMICAL COMMUNICATIONS, 2003, (11) :1298-1299
[12]   Nitrogen-concentration dependence on photocatalytic activity of TiO2-xNx powders [J].
Irie, H ;
Watanabe, Y ;
Hashimoto, K .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (23) :5483-5486
[13]   Efficient photochemical water splitting by a chemically modified n-TiO2 2 [J].
Khan, SUM ;
Al-Shahry, M ;
Ingler, WB .
SCIENCE, 2002, 297 (5590) :2243-2245
[14]   Photoelectrochemical and optical properties of nitrogen doped titanium dioxide films prepared by reactive DC magnetron sputtering [J].
Lindgren, T ;
Mwabora, JM ;
Avendaño, E ;
Jonsson, J ;
Hoel, A ;
Granqvist, CG ;
Lindquist, SE .
JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (24) :5709-5716
[15]   Microwave-assisted shape-controlled bulk synthesis of noble nanocrystals and their catalytic properties [J].
Mallikarjuna, Nadagouda N. ;
Varma, Rajender S. .
CRYSTAL GROWTH & DESIGN, 2007, 7 (04) :686-690
[16]   Nitrogen-doped titanium dioxide photocatalysts for visible response prepared by using organic compounds [J].
Nosaka, Y ;
Matsushita, M ;
Nishino, J ;
Nosaka, AY .
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 2005, 6 (02) :143-148
[17]   Microwave-assisted organic synthesis and transformations using benign reaction media [J].
Polshettiwar, Vivek ;
Varma, Rajender S. .
ACCOUNTS OF CHEMICAL RESEARCH, 2008, 41 (05) :629-639
[18]   Self-Assembly of Metal Oxides into Three-Dimensional Nanostructures: Synthesis and Application in Catalysis [J].
Polshettiwar, Vivek ;
Baruwati, Babita ;
Varma, Rajender S. .
ACS NANO, 2009, 3 (03) :728-736
[19]   Nanoparticle-supported and magnetically recoverable nickel catalyst: a robust and economic hydrogenation and transfer hydrogenation protocol [J].
Polshettiwar, Vivek ;
Baruwati, Babita ;
Varma, Rajender S. .
GREEN CHEMISTRY, 2009, 11 (01) :127-131
[20]   Magnetic nanoparticle-supported glutathione: a conceptually sustainable organocatalyst [J].
Polshettiwar, Vivek ;
Baruwati, Babita ;
Varma, Rajender S. .
CHEMICAL COMMUNICATIONS, 2009, (14) :1837-1839