| 聚乙烯醇负载Keggin结构杂多酸光催化降解水中苯酚 |
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| 引用本文： | 王炜,程为.聚乙烯醇负载Keggin结构杂多酸光催化降解水中苯酚[J].大连铁道学院学报,2004,25(3):87-90. |
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| 作者姓名： | 王炜 程为 |
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| 作者单位： | 大连交通大学环境科学与工程学院 辽宁大连116028
(王炜)，大连交通大学环境科学与工程学院 辽宁大连116028(程为) |
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| 摘 要： | 采用化学自组装法制备聚乙烯醇负载Keggin结构的H3PW12O40和H4SiW12O40复合物膜并对水中苯酚进行光催化降解研究．对复合物的结构及光色性质进行表征，讨论了复合物膜的组成、用量、光照时间与TOC及苯酚去除率之间的关系．实验结果表明：以PW12／SiW12／聚乙烯醇制成的复合物膜，其组成为1：2(质量比)、用量为5g/L，光照2h，10mg／L水中苯酚去除率可达到50％左右，TOC去除率可达到30％-40％．
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| 关 键 词： | Keggin结构 色性 杂多酸 光催化降解 苯酚 复合物 H4SiW12O40 聚乙烯醇 自组装法 组成 |
Complex Film(Heteropolyacid/Polyvinylalcohol): Synthesis and Photocatalytic Degradation of Aqueous Phenol |
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| WANG Wei,CHENG Wei.Complex Film(Heteropolyacid/Polyvinylalcohol): Synthesis and Photocatalytic Degradation of Aqueous Phenol[J].Journal of Dalian Railway Institute,2004,25(3):87-90. |
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| Authors: | WANG Wei CHENG Wei |
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| Abstract: | Complex film were synthesized by incorporating H_(3)PW_(12)O_(40)and/or H_(4)SiW_(12)O_(40)into polyvinyl alcohol matrix via chemical self-assembled method.The complex film with high specific surface area is insoluble and readily separable.Trace aqueous phenol was totally degraded and mineralized into CO_(2) and H_(2)O by irradiating a complex film slurry in the near UV aera.Studies of the reaction indicate that photogeneration of OH-radicals originated from neutralization of OH-groups on the catalyst surface is responsible for the oxidation of the organic substrates in aqueous solution. |
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