光促进电镀锌板还原降解有机污染物  

Photopromoted Reducing Degradation of Organic Pollutants by Electrogalvanizing Zinc Plate

作　　者：陈锋[1] 朱明峰[1] 缪亚美[1] 方剑英[1] 张金龙[1] 

机构地区：[1]华东理工大学精细化工研究所,上海200237

出　　处：《华东理工大学学报（自然科学版）》2009年第2期234-238,共5页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(20777015);上海市自然科学基金(06ZR14025);上海市纳米专项(0652nm045)

摘　　要：用电镀锌板对废水中的有机污染物进行了降解。在碘钨灯照射下,电镀锌板对偶氮染料和氯代有机物的还原降解速率倍增。对不同有机污染物的降解活性测试及XPS测试的结果显示:光照下电镀锌板对偶氮染料和氯代有机物的还原降解遵循典型的零价金属还原降解有机物的机理。入射光通过激发有机物分子或可能的有机物——Zn0复合物,加速了有机物分子和Zn0之间的电子转移还原过程。电镀锌板还原降解活性具有较好的持久性,在多次使用后未发现明显变化。Electrogalvanizing zinc plate was used to degrade the organic pollutants in wastewater. Reducing degradation rates of azo dyes and chloro-organics by the electrogalvanizing zinc plate were greatly increased under the irradiation of an iodine-tungsten lamp. Measurement results of degradation activities of various organic pollutants by electrogalvanizing zinc plate and XPS show that the reducing degradation of azo dyes and chloro-organics under irradiation also follows general laws of zero-valent metal reduction. It is supposed that the irradiation light accelerates the electric transfer process between the organics and Zn^0 via the excitation of the organic molecule or a possible organic-Zn^0 complex. The endurance of the reducing degradation activity of electrogalvanizing zinc plate is pretty well, and no obvious change is found after several times usage.

关 键 词：电镀锌板 零价金属 还原降解 偶氮染料 氯代有机物 

分 类 号：O644[理学—物理化学]