期刊
CHEMICAL ENGINEERING JOURNAL
卷 167, 期 1, 页码 13-21出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2010.11.061
关键词
Photocatalytic oxidation; VOCs; Antimicrobial; Air purification; Indoor air
资金
- Hong Kong Research Grant Council
- Hong Kong Innovation and Technology Commission
- Chiaphua Industries Limited, Hong Kong
TiO2 photocatalysts were prepared and coated on surfaces. Ultrathin TiO2 coatings were obtained by wash-coating and screen-printing techniques. The latter provides films of excellent adhesion that could tolerate washing under water jet. The scratch-proof coatings were characterized, and X-ray diffraction (XRD), atomic force microscopy (AFM) and N-2 physisorption indicated that the addition of polyethylene glycol (PEG) not only improved the coating properties of TiO2 but also served as poragen to produce high surface area, mesoporous TiO2. The coated TiO2 displayed better activity than the commercial P25 TiO2 for photocatalytic oxidation of ethylene, ethanol, acetaldehyde, isopropanol and acetone. The catalyst also exhibited excellent bactericidal, fungicidal and virucidal activities against a wide variety of Gram-positive and Gram-negative bacteria, fungal spores and T2 bacterial phage. A simple photoreactor with tangential air flow was designed and tested in a chamber, before incorporating in a prototype air purifier. The study showed that there is good agreement between laboratory catalyst reaction data (i.e., 110 mmol h(-1) for acetone) and the prototype test results (69 mmol h(-1)). (C) 2011 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据