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PW_(12)/SiO_2光催化降解水中苯酚

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Indexed by:期刊论文

Date of Publication:2010-03-15

Journal:环境科学与技术

Included Journals:PKU、ISTIC、CSCD

Volume:33

Issue:3

Page Number:59-63

ISSN No.:1003-6504

Key Words:光催化;磷钨酸;二氧化硅;溶胶-凝胶法;苯酚

Abstract:采用溶胶-凝胶法制备了二氧化硅负载H_3PW_(12)O_(40)催化剂,并采用红外光谱、XRD及BET对其进行了表征.研究了其对水中苯酚的光催化降解性.讨论了负载催化剂用量、光照时间对苯酚和TOC去除率的影响.结果表明:PW_(12)/SiO_2负载型催化剂用量为3g/L,光照6h,10mg/L苯酚水溶液中苯酚去除率为93.06%,TOC去除率为73.20%.PW_(12)/SiO_2多相光催化10mg/L苯酚水溶液降解反应和苯酚水溶液直接光解反应均为一级动力学反应.

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