用于光催化的独立式无机整体材料的聚合物凝胶模板法

Polymer gel templating of free-standing inorganic monoliths for photocatalysis.

作者信息

Fan Xiaojuan, Fei Honghan, Demaree David H, Brennan Daniel P, St John Jessica M, Oliver Scott R J

机构信息

Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA.

出版信息

Langmuir. 2009 May 19;25(10):5835-9. doi: 10.1021/la8029837.

DOI:10.1021/la8029837

PMID:19334725

Abstract

We have developed a simple, low-cost process to fabricate free-standing porous metal oxide monoliths. Various swollen polymers and hydrogels possessing an open network structure are infiltrated with pure liquid metal alkoxide. Hydrolysis followed by chemical or thermal degradation of the polymer leads to bulk porous monoliths, TiO2 and SiO2 as initial examples. The titania solids were subsequently employed as photocatalysts under UV light and monitored for adsorption. The materials show efficient reusable photocatalytic ability as compared to pure-phase nanoparticle titanium oxide.

摘要

我们已经开发出一种简单、低成本的工艺来制造独立式多孔金属氧化物整体材料。各种具有开放网络结构的溶胀聚合物和水凝胶用纯液态金属醇盐进行渗透。聚合物进行水解，随后进行化学或热降解，从而得到块状多孔整体材料，以二氧化钛（TiO₂）和二氧化硅（SiO₂）作为初始实例。随后将二氧化钛固体用作紫外光下的光催化剂，并监测其吸附情况。与纯相纳米颗粒氧化钛相比，这些材料表现出高效的可重复使用光催化能力。