您的位置:首页  > 论文页面

钛酸纳米管中钠离子含量对其吸附性能的影响

发表时间:2012-12-31  浏览量:1512  下载量:584
全部作者: 江芳,杨凯利,陈欢
作者单位: 南京理工大学环境与生物工程学院
摘 要: 采用水热法制备了钛酸纳米管(titanate nanotubes, TNTs),通过控制酸交换过程的pH值得到不同Na+含量的TNTs. 以亚甲基蓝(methylene bule, MB)为模型反应物,考察了不同Na+含量的TNTs在不同环境温度下对MB的吸附行为。结果表明:TNTs中Na+的含量对其吸附性能有较大影响,Na+含量高的TNTs对MB的吸附量高,这主要是由于TNTs中的Na+有稳定TNT结构的作用,而随着TNTs中Na+含量的增加,TNT表面的负电荷减少,MB和TNT表面的作用力减弱;随着吸附温度的升高,MB在TNTs上吸附量增大。
关 键 词: 环境工程学;钛酸纳米管;水热法;吸附;亚甲基蓝
Title: Effects of sodium content on the adsorption activity of titanate nanotube
Author: JIANG Fang, YANG Kaili, CHEN Huan
Organization: School of Environmental & Biological Engineering, Nanjing University of Science & Technology
Abstract: Titanate nanotubes (TNTs) were prepared through hydrothermal method and TNTs with different Na+ content were obtained by controlling the pH value in acid exchange process. The adsorption activities of TNTs with different Na+ content were evaluated by adsorption of methylene bule (MB) under various environmental temperatures. The results showed that the Na+ content in TNT had an effect on the adsorption behavior of MB, and the TNT with high Na+ content exhibited a good adsorption capacity, which was ascribed to the fact that Na+ in TNTs could stabilize the nanotubular structure. With the increase of Na+ content in TNT, the negative charges on TNT surface reduced, the interaction of MB and TNT surface decreased. With the increasing of adsorption temperature, the adsorption amount of MB on TNTs enhanced.
Key words: environmental engineering; titanate nanotube; hydrothermal method; adsorption; methylene bule
发表期数: 2012年12月第24期
引用格式: 江芳,杨凯利,陈欢. 钛酸纳米管中钠离子含量对其吸附性能的影响[J]. 中国科技论文在线精品论文,2012,5(24):2318-2322.
 
0 评论数 0
暂无评论
友情链接