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可见光照射负载型催化剂高效活化H2O2降解有机污染物
Efficient Oxidation of Organic Pollutants Catalyzed by Supported Catalyst under Visible Light Irradiation
【作者】 黄应平; 刘德富; 罗光富; 张德丽; 马万红; 赵进才;
【Author】 Huang Yingping Liu defu Luo Guangfu Zhang Deli Ma Wanhong Zhao jincai Hubei Provincial Key Laboratory of Preventing & Mitigating Disasters China Three Gorges University, Yi Chang 443002, China; Laboratory of Photochemistry, Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
【机构】 三峡大学湖北省防灾减灾重点实验室; 中国科学院化学研究所分子科学中心;
【摘要】 以铁磺基苯基卟啉(FeTPPS4)与阴离子交换树脂(Amberlite IR-120B)负载的固定物(FeTPPS4-resin,简称FePR)为催化剂,以H2O2为氧化剂,在可见光照射下(λ>450nm),研究了对目标有毒有机染料酸性桃红(SRB)和有毒小分子有机污染物2,4-二氯苯酚(DCP)的光催化氧化降解作用和方法。可见光能有效的加速催化降解反应速率。基于实验结果,拟定光催化反应体系主要涉及羟基自由基历程。
【Abstract】 An efficient method has been developed to degrade toxic and non-biodegradable organic pollutants such as Sulforhodamine B (SRB) and 2,4-dichlorophenol (DCP). It is based on the photocatalytic power of Iron tetrasulfophenylporphyrin supported on a commercial anionic ion-exchange resin (Amberlite IRA 900) (FePR) to activate an oxidant H2O2 in aqueous media. Visible light irradiation (λ>450nm) significantly accelerates the degradation process. On the basis of the experiment results, the photocatalytic degradation pathways mainly involve the formation and reaction of OH radicals.
【Key words】 Iron tetrasulfophenylporphyrin; Resin-supported iron tetrasulfophenylporpenyrin; Photocatalysis; photodegradation; Organic pollutants;
- 【会议录名称】 第二届全国环境化学学术报告会论文集
- 【会议名称】第二届全国环境化学学术报告会
- 【会议时间】2004-10
- 【会议地点】中国上海
- 【分类号】X131
- 【主办单位】中国化学会、上海交通大学