Role of ammonium ions on the stability of TiO2 sol

被引：3

作者：

Zhang, Jun ^{[1
]}

Jiang, Peng ^{[1
]}

Sun, Peng ^{[1
]}

Wang, Qi ^{[1
]}

Kuang, Jianlei ^{[1
]}

Liu, Wenxiu ^{[1
]}

Cao, Wen-Bin ^{[1
]}

机构：

[1] Univ Sci & Technol, Sch Mat Sci & Engn, Dept Inorgan Nonmetall Mat, Beijing 100083, Peoples R China

来源：

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2019年 / 40卷 / 03期

基金：

中国博士后科学基金;

关键词：

TiO2; sol; ammonium ion; stability; DLVO theory; NANOCRYSTALLINE; NANOPARTICLES; COLLOIDS;

D O I：

10.1080/01932691.2018.1472002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, the role of the trace ammonium ions on the stability of TiO2 sol prepared by peroxo titanic acid (PTA) sol was investigated. The results showed that the removal of ammonium ions in PTA sol is beneficial to reduce agglomeration and increase the negative charge on the surface of TiO2 colloidal particles, contributing to the higher stability and longer storage time of the TiO2 sol. It was also approved by the increase of interaction energy calculated by classical DLVO theory. In addition, the photocatalytic performance of TiO2 sol was improved due to the decrease of aggregation of TiO2 colloidal particles.

引用

页码：425 / 430

页数：6

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