Laser-enhanced photocatalytic degradation of organic pollutants from water using ZnO semiconductor catalyst

Mohammed A. Gondal; Mohammad N. Sayeed

首页> 外文期刊>Journal of environmental science and health, Part A. Toxic/hazardous substances & environmental engineering >Laser-enhanced photocatalytic degradation of organic pollutants from water using ZnO semiconductor catalyst

【24h】

Laser-enhanced photocatalytic degradation of organic pollutants from water using ZnO semiconductor catalyst

机译：Laser-enhanced photocatalytic degradation of organic pollutants from water using ZnO semiconductor catalyst

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Wastewater contaminated with organic pollutants creates serious environmental problems. Laser induced photocatalysis has been investigated for removal of organic pollutant like phenol from water. The important mechanism for degradation of phenol by UV laser irradiation is redox reactions triggered by semiconductor catalyst in presence of water. In this study the potential of a ZnO semiconductor catalyst has been explored as an effective catalyst for the photodegradation of phenol using a Nd:YAG laser-emitting at 355 nm in UV-radiation in a batch reactor. The influences of different parameters such as catalyst concentration, UV-radiation intensity, and pH on the extent of photo degradation have been investigated. Overall degradation of phenol achieved was 70% after 60 minutes of laser irradiation of 100 ppm phenol solution in water. The reaction rate constant fit a first-order reaction model for phenol degradation and was estimated as 0.0088 min- 1. This study proved that laser induced photocatalytic removal of phenol is highly efficient as compared with the broadband spectral sources such as lamps being applied in majority of setups worldwide.

著录项

来源
《Journal of environmental science and health, Part A. Toxic/hazardous substances & environmental engineering》 |2008年第1期|70-77|共8页
作者
Mohammed A. Gondal; Mohammad N. Sayeed;
展开▼
作者单位

Laser Research Laboratory, Physics Department, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia;

Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
ZnO; photocatalysis; wastewater treatment; phenol removal; reaction kinetics; laser applications; organic pollutants; nanomaterials;

Laser-enhanced photocatalytic degradation of organic pollutants from water using ZnO semiconductor catalyst

摘要

著录项

相关主题

期刊订阅