Table of Contents
Journal of Catalysts
Volume 2013, Article ID 364275, 6 pages
http://dx.doi.org/10.1155/2013/364275
Research Article

Photocatalytic Degradation of Phenol Using a Nanocatalyst: The Mechanism and Kinetics

1Advanced Materials Technology Center, Singapore Polytechnic, S139651, Singapore
2School of Chemical and Life Sciences, Singapore Polytechnic, S139651, Singapore

Received 10 August 2012; Accepted 18 September 2012

Academic Editor: Jianqin Zhuang

Copyright © 2013 Y. Tao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The study of photocatalytic degradation of phenol was exploited with nano-ZnO as immobilized photocatalysts in a laboratory scale photocatalytic reactor. The photocatalytic degradation mechanism and kinetics of phenol in water were studied using the solid-phase microextraction (SPME) technique. Based on optimized headspace SPME conditions, phenol in water was first extracted by the fibre, which was subsequently inserted into an aqueous system with immobilized photocatalysts (nano-ZnO) exposed to an irradiation source (i.e., ultraviolet A (UVA) lamps). After different irradiation times (5–80 min), four main intermediates of photocatalytic degradation generated on the fibre were determined by GC-MS.