改性球形二氧化硅吸附重金属Cr(Ⅵ)离子实验研究  

Experimental Study on Adsorption of Heavy Metal Cr(Ⅵ)Ions by Modified Spherical Silica

作　　者：陈蓉 牛延慧[1] 王国松 CHEN Rong;NIU Yan-hui;WANG Guo-song(School of Chemistry and Materials Science,Guizhou Education University,Guizhou Guiyang 510018,China)

机构地区：[1]贵州师范学院材料科学与工程专业,贵州贵阳510018

出　　处：《广州化工》2024年第13期25-29,39,共6页GuangZhou Chemical Industry

基　　金：贵州师范学院2022年度博士项目研究课题(No:2022BS010);贵州省科学技术厅基金(No:黔科合平台人才[2018]5778-10)。

摘　　要：采用水热法制备球形二氧化硅,并利用3-氨丙基三甲氧基硅烷(APTMS)对制备得到的球形二氧化硅进行了氨基改性。采用傅里叶红外光谱(FTIR)和透射电镜(TEM)等技术手段对氨基改性球形二氧化硅进行表征分析。考察了溶液pH、吸附时间、初始浓度等因素对铬离子(Ⅵ)吸附量的影响,获得系统吸附规律。研究结果表明:氨基改性球形二氧化硅比未改性二氧化硅具有更优异的铬离子(Ⅵ)吸附性能。Spherical silica was prepared by hydrothermal method,and the spherical silica was modified with 3-aminopropyl trimethoxysilane(APTMS).The amino-modified spherical silica was characterized by Fourier transform infrared spectroscopy(FTIR)and transmission electron microscopy(TEM).The effects of solution pH,adsorption time and initial concentration on the adsorption capacity of chromium ion(Ⅵ)were investigated,and the adsorption law of the system was obtained.The results showed that amino-modified spherical silica has better adsorption performance of chromium ion(Ⅵ)than unmodified silica.

关 键 词：球形二氧化硅 氨基改性 铬(Ⅵ)离子 吸附 

分 类 号：TQ424[化学工程]