膜
渗透
化学工程
纳米颗粒
噻吩
材料科学
聚合物
高分子化学
化学
有机化学
纳米技术
复合材料
生物化学
工程类
作者
Guanhua Liu,Tiantian Zhou,Weiping Liu,Shen Hu,Fusheng Pan,Hong Wu,Zhongyi Jiang,Baoyi Wang,Jing Yang,Xingzhong Cao
出处
期刊:Journal of materials chemistry. A, Materials for energy and sustainability
[The Royal Society of Chemistry]
日期:2014-06-10
卷期号:2 (32): 12907-12907
被引量:40
摘要
Dopamine–silver (DAAg) nanoparticles were synthesized in aqueous solution via bioinspired adhesion and redox reaction, and they were then incorporated into poly (dimethyl siloxane) (PDMS) matrix to prepare PDMS–DAAg hybrid membranes for pervaporative desulfurization of model gasoline. The loading content of Ag(I) in DAAg nanoparticles could reach as high as 54.03 wt%. The polymer chain flexibility and membrane swelling properties were mediated by DAAg nanoparticles. The hybrid membrane with 5.0 wt% of DAAg nanoparticles displayed an optimum separation performance with permeation flux of 8.22 kg m−2 h−1 (3-fold higher than that of PDMS control membrane) and enrichment factor of 5.03 (50% higher than that of PDMS control membrane). The enhancement of separation performance was mainly due to the facilitated transport of thiophene by reversible interaction between Ag(I) and thiophene molecules, and the moderate fractional free volume tuned by DAAg nanoparticles. Moreover, effects of operation parameters such as temperature, thiophene concentration in the feed, and feed Reynolds number on the permeation flux and enrichment factor were investigated.
科研通智能强力驱动
Strongly Powered by AbleSci AI