pH-driven phase separation: Simple routes for fabricating porous TiO2 film with superhydrophilic and anti-fog properties

被引：34

作者：

Huang, Weixin ^{[1
]}

Chen, Yanfeng ^{[1
]}

Yang, Chunxiao ^{[1
]}

Yue Situ ^{[1
]}

Huang, Hong ^{[1
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 06期

关键词：

TiO2 thin films; Phase separation; Porous structure; Neutralization; Isoelectric point (Zero potential point); SOL-GEL; THIN-FILMS; POLYETHYLENE-GLYCOL; SILICA; PERFORMANCE; POROSITY; CHEMISTRY; SURFACES; CATALYST; SUPPORT;

D O I：

10.1016/j.ceramint.2015.02.081

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A series of TiO2 surfaces with different pore sizes were easily fabricated via pH-driven phase separation in the sol gel under template-free conditions. The approach is to obtain TiO2 films with well-defined macropores by utilizing neutralization reaction from acid base combination. The tuning of solution pH from neutralization could reduce the miscibility of solvent and solute and enable the formation of phase separation. The influence of preparation conditions (ratios of acid-to-base, aging time and solvents) on the pore formation was investigated. The porous TiO2 films prepared through pH-driven phase separation exhibit promising super hydrophilic characteristic anti-fog property. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：7573 / 7581

页数：9

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