| TiO2/Polyester Non-woven Fabrics as a Kind of Photocatalyst for the Degradation of Formaldehyde Gas |
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| 作者姓名： | 杨建忠 孙爱贵 陆银兰 |
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| 作者单位： | Xi＇an University of Engineering Science and Technology, Xi＇an, 710048 |
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| 摘 要： | The feasibility of photocatalytic degradation of the formaldehyde gas by titanium dioxide （TiO2）/polyester non-woven fabrics was studied. Tbe effects of parameters such as tbe concentration of TiO2 solution, pH value, and drying temperature on the photocatalytic degradation of the formaldehyde gas were also studied. The results showed that the photodegradation efficiency of the formaldehyde gas increased rapidly with the increasing of the concentration of TiO2 solution up to 15g/L, but when the concentration was in excess of 15g/L, the photodegradation efficiency decreased gradually and fluctuated due to light obstruction and disperse state of TiO2. Adjusting the pH value in the solution, the efficiency of photocatalytic degradation of the formaldehyde gas could be improved. The mechanisms of the reaction and the role of the additives were also investigated. After 42hours, TiO2/ polyester non-woven fabric showed no significant loss of the photocatalytic activity.
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| 关 键 词： | 甲醛气体 废气处理 光催化剂 光催化降解 TiO2 聚酯非织布 |
| 收稿时间： | 2004-04-22 |
TiO2/Polyester Non-woven Fabrics as a Kind of Photocatalyst for the Degradation of Formaldehyde Gas |
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| YANG Jian-zhong,SUN Ai-gui,LU Yin-lan.TiO2/Polyester Non-woven Fabrics as a Kind of Photocatalyst for the Degradation of Formaldehyde Gas[J].Journal of Donghua University,2005,22(4):33-35. |
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| Authors: | YANG Jian-zhong SUN Ai-gui LU Yin-lan |
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| Abstract: | The feasibility of photocatalytic degradation of the formaldehyde gas by titanium dioxide (TiO_2)/polyester non-woven fabrics was studied. The effects of parameters such as the concentration of TiO_2 solution, pH value, and drying temperature on the photocatalytic degradation of the formaldehyde gas were also studied. The results showed that the photodegradation efficiency of the formaldehyde gas increased rapidly with the increasing of the concentration of TiO_2 solution up to 15g/L, but when the concentration was in excess of 15 g/L, the photodegradation efficiency decreased gradually and fluctuated due to light obstruction and disperse state of TiO_2. Adjusting the pH value in the solution, the efficiency of photocatalytic degradation of the formaldehyde gas could be improved. The mechanisms of the reaction and the role of the additives were also investigated. After 42hours, TiO_2/polyester non-woven fabric showed no significant loss of the photocatalytic activity. |
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| Keywords: | formaldehyde photocatalytic degradation titanium dioxide polyester non-voven fabric |
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