天津工业大学学报2017，Vol.36Issue(2)：6-12,7.DOI:10.3969/j.issn.1671-024x.2017.02.002
PVDF/AFMS杂化膜的制备及对Cu2+的吸附
Preparation of PVDF/AFMS hybrid membrane and its adsorption on copper ions
摘要
Abstract
In order to improve adsorption capacity of membrane to Cu2+from aqueous solution, amino functionalized meso-porous silica (AFMS) was synthesized through co-condensation method. Then, AFMS was blended with poly (vinylidene fluoride) (PVDF) in different mass ratios to prepare hybrid membranes by immersion precipitation phase inversion method. The hybrid membranes were characterized using FTIR and SEM. In addition, the ad-sorption capacity of the prepared hybrid membrane to Cu2+in aqueous solution (initial Cu2+concentration is 300 mg/L) was investigated. Results indicated that AFMS were successfully immobilized in PVDF membrane. The adsorption capacity of hybrid membrane to Cu2+increased with the increase of AFMS mass ratio, pH (<7.0), volume of Cu2+solution and contact time till the adsorption equilibrium. The hybrid membrane showed maximum adsorption of 57.3 mg/g under the optimal adsorption condition (AFMS mass ratio=40%, pH=6.0, solution volume=20 mL, contact time=120 min). The adsorption capacity of hybrid membrane to copper ions was 54.6 mg/g after five adsorption-desorption cycles and above 95% of the adsorption capacity of virgin hybrid mem-brane, which indicated that hybrid membrane displayed a good adsorption performance and a high reusability for copper uptake. Furthermore, the hybrid membranes can be used conveniently.关键词
介孔二氧化硅/PVDF膜/杂化膜/吸附/铜离子Key words
mesoporous silica/PVDF membrane/hybric membrane/adsorption/Cu2+分类
化学化工引用本文复制引用
李丽颖,袁千玄,马胜奎,董华琳,王文强,王爽,陈熙..PVDF/AFMS杂化膜的制备及对Cu2+的吸附[J].天津工业大学学报,2017,36(2):6-12,7.基金项目
国家自然科学基金资助项目(51003076,51403149) （51003076,51403149）
天津市自然科学基金资助项目(14JCZDJC38100) （14JCZDJC38100）
