Photocatalytic Activity of Spherical Titanium Diozide in Degradation of Methylene Blue Solution
Photocatalytic activity of titanium dioxide (TiO2) is attracting considerable attentions for lots of contaminants in water, air or solid surfaces could be decomposed after UV-illumination. Many efforts on investigation of initial photocatalytic activity of titanium dioxide (TiO2) are proposed. In this study, crystalline titanium dioxide (TiO2) powders with excellent photocatalytic activity, high specific surface area and spherical morphology were synthesized by using low temperature hydrothermal process. Phase-pured and spherical titanium dioxide (TiO2) powders (about 3 m in diameter) with meso pore size of 5.5 nm were measured by the X-ray Diffractometer (XRD), Scanning Electron Microscopy (SEM) and Specific Area Analysis (BET) instruments. Our experiments fined that the concentration of titanium ion Ti4+, conductivity of the pre-synthesized solution and concentration of Cl- in pre-synthesized solution strongly affect the morphology of synthesized titanium dioxide (TiO2) powders. These synthesized spherical titanium dioxide (TiO2) powders were then dispersed in methylene blue (MB) solution to proceed photodegradation reaction by UV-light. The experimental data showed the photocatalytic ability of synthesized spherical powders is excellent than commercial P25 during first time UV-light degradation period. However, both powders showed similar photocatalytic efficiency during the second UV-light degradation period.
UV-illumination photocatalytic activity spherical titanium diozide methylene blue(MB) degradation
TSAI Ping-szu TSAI Cheng-hsien LAI Yu-feng HONG Zi-ben
Department of Chemical and Material Engineering,Kaohsiung University of Applied Sciences,Taiwan,China
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
1180-1184
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）