Photodecomposition of 2,4-dichlorophenol in aqueous solution catalyzed by cadmium sulfide particles
Photodecomposition of 2,4-dichlorophenol in aqueous solution catalyzed by cadmium sulfide particles
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DOI：
10.1021/ie00007a032
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发表时间：
1992-07
影响因子：
4.2
通讯作者：
Y. Ku;Ching-Bin Hsieh
中科院分区：
文献类型：
--
作者：
Y. Ku;Ching-Bin Hsieh
本文研究了在不同的溶液pH值、反应时间和CdS负载量条件下，硫化镉悬浮液对2，4-二氯苯酚的紫外光降解。在碱性条件下，质子化和去质子化物种在不同的溶液pH条件下的分布可能归因于2，4-二氯苯酚去除率的增加。基于碳平衡的简化两步连续反应模型可以较好地描述2，4-二氯苯酚的光催化降解和脱矿过程。
In this paper the degradation of 2,4-dichlorophenol in the presence of cadmium sulfide suspensions by ultraviolet illumination is studied under various solution pH conditions, reaction times, and CdS loadings. The increase in the 2,4-dichlorophenol removal at alkaline condition by photocatalysis is possibly attributed to the distribution of protonated and deprotonated species at different solution pH conditions. The degradation and demineralization of 2,4-dichlorophenol by the photocatalytic process can be described fairly well by a simplified two step consecutive reaction scheme based on carbon balance.