Novel nitrogen-doped anatase TiO2 mesoporous bead photocatalysts for enhanced visible light response |
| |
| Affiliation: | 1. Department of Materials Science and Engineering, National Chung Hsing University, 250 Kuo Kuang Rd., Taichung 402, Taiwan;2. Department of Materials Engineering, Mingchi University of Technology, 84 Gungjuan Rd., Taishan, Taipei 243, Taiwan;1. Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 49195-1159 Zanjan, Iran;2. Center for Climate and Global Warming(CCGW), Institute for Advanced Studies in Basic Sciences (IASBS), Gava Zang, 45137-66731 Zanjan, Iran;1. Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Normal University, Huangshi 435002, PR China;2. Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002, PR China;3. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China;1. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. School of Chemical Engineering, Chongqing University of Technology, Chongqing 400050, PR China;3. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China |
| |
| Abstract: | This work reports the synthesis and characterization of a novel, high surface area N-doped anatase TiO2 mesoporous bead as a photocatalyst for visible light photodegradation. The beads were prepared using a two-cycle microwave-assisted hydrothermal method using three different types of nitrogen dopants: diaminohexane, triethylamine, and urea. In the first cycle, TiO2mesoporous beads with controlled structures were synthesized at 200 °C without further calcination. The obtained beads were then subjected to a second cycle of microwave -assisted hydrothermal process for nitrogen doping. The photocatalytic activity of the N-doped mesoporous TiO2 beads was determined by measuring the decomposition of a methyl blue aqueous solution under UV and visible light. It was found that different precursors lead to different degrees of doping which enhances the light absorption primarily in the visible light region. We demonstrate that the photocatalytic activity or photodegradation is enhanced in the visible light region. |
| |
| Keywords: | Photocatalytic activity Photodegradation Nitrogen-doping |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
