|
|||||
|
|
Design and fabrication of a TiO2/nano-silicon composite visible light photocatalyst |
|
| Authors: | Chun Yu Lin Che Hao Kuo Chun-Sheng Lin Yu-Hua Lee Sheng-Beng Hwang |
| Institution: | a VLSI Technology Laboratory, Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Taiwan b Department of Physics, National Cheng Kung University, Taiwan, Taiwan c Department of Chemical Engineering, National Cheng Kung University, Taiwan d Department of Electrical Engineering, Chien Cuo Technology University, Taiwan |
| Abstract: | Nano-silicon (nc-Si) was utilized as the charges generator to promote the photocatalytic and super-hydrophilic reactivity of TiO2 film under visible light irradiation. The photocatalytic ability of TiO2/nc-Si composite photocatalyst was evaluated by a set of experiments to photodecompose 100 ppm methylene blue (MB) in aqueous solution. And the super-hydrophilic property was characterized by measuring the water droplet contacts angle, under visible light irradiation in atmospheric air and at room temperature. Under 100 mW/cm2 visible light irradiation, the droplet contact angles were reduced to 0° within 4 h with nc-Si charge generator. Additionally, the rate constant of MB photo-degradation was promoted 6.6 times. |
| Keywords: | Nano-silicon TiO2 Photocatalyst Methylene blue Super-hydrophilic |
| 本文献已被 ScienceDirect 等数据库收录！ | |