Degradation of Volatile Acetone by a Photocatalytic Reactor with TiO2 Coated Sieves

uTaipei > College of Science > Department of Earth and Life Science > Periodical Articles > Item 987654321/6410

Please use this identifier to cite or link to this item: http://utaipeir.lib.utaipei.edu.tw/dspace/handle/987654321/6410

Title:	Degradation of Volatile Acetone by a Photocatalytic Reactor with TiO2 Coated Sieves
Authors:	Chen Yu Chang Yao Chuan Lee Ching Hsing Lin Jyh Wei Lee Yu Jie Chang 張育傑 Jian Huan Chen
Contributors:	臺北市立教育大學地球環境暨生物資源學系
Keywords:	Sol-Gel Method Stainless Steel Sieves TiO2 Volatile Organic Compound (VOC)
Date:	2010-08
Issue Date:	2012-06-28 15:12:20 (UTC+8)
Abstract:	The TiO2 thin films were coated on the 100 meshes stainless steel 304 (SS304) sieves by using the sol-gel method followed by a thermal treatment at 200oC. The prepared TiO2-coated sieves were then employed to setup a photocatalytic reactor for evaluating their abilities on the degradation of VOCs (volatile organic compounds). The UV lamp was enveloped with a cylinder TiO2-coated sieve and located in the center of the reactor. A VOCs diffusing tube was applied to yield acetone under water bath. The yielded gaseous acetone was enforced to pass through the TiO2-coated sieves and reacted by photocatalytic reaction. Both the inflow gas and off-gas were monitored by a PID (photoionization detector) sensor for calculating the treat efficiencies under various conditions. The results showed that the amorphous structure was observed on the TiO2 films after sol-gel method, whereas the crystalline anatase phase was found after annealing at 200oC. The SEM images showed that the surface morphology of TiO2 coated SS304 sieves was very similar to that of uncoated sieves, demonstrating a good uniformity and thin thickness of the sol-gel coating method derived in this work. It was observed that most volatile acetone (almost 100%) was removed after treated with the designed photocatalytic reactor under a high fed flow rate (0.5- 2.0 l/min). As compared with the control experiments (UV OFF test), the adequate photocatalytic abilities of this developed TiO2 coated sieves were demonstrated. With the advantages of high contacting area with VOCs, low headloss, durable substrate and easy maintenance, the TiO2-coated sieves possessed a high potential for applying on the photocatalytic degradation of indoor air pollutants.
Relation:	Advanced Materials Research Volumes 123 - 125 P.919-922
Appears in Collections:	[Department of Earth and Life Science] Periodical Articles

Files in This Item:

There are no files associated with this item.

View Licence

Loading...