Post-synthetic modification of MOFs to enhance interfacial compatibility and selectivity of thin-film nanocomposite (TFN) membranes for water purification

渗透 界面聚合 聚酰胺 化学工程 纳米复合材料 材料科学 薄膜复合膜 纳滤 高分子化学 单体 聚合物 化学 复合材料 反渗透 渗透 生物化学 工程类
作者
Gang Han,Robin M. Studer,Moon Joo Lee,Katherine Mizrahi Rodriguez,Justin J. Teesdale,Zachary P. Smith
出处
期刊:Journal of Membrane Science [Elsevier BV]
卷期号:666: 121133-121133 被引量:44
标识
DOI:10.1016/j.memsci.2022.121133
摘要

Efficient discrimination of ions and small neutral contaminants remains a challenge for polyamide thin-film nanocomposite (TFN) water separation membranes due to the presence of interfacial defects and particle-agglomeration-induced nonselective voids in the polyamide layer. In this work, highly selective TFN membranes were successfully fabricated by leveraging post-synthetic modifications of (3-glycidyloxypropyl)triethoxysilane (GPTES) and trimesoyl chloride (TMC) on MIL-101(Cr)–NH2 MOF filler nanoparticles. GPTES modification suppresses particle agglomeration during interfacial polymerization for membrane formation by forming a stable particle suspension in the organic monomer solution, while TMC-induced in situ chemical crosslinking between filler particles and polyamide addresses the phase compatibility and interfacial issues at the filler–polyamide interface. The resulting TFN membranes show high NaCl, MgCl2, Na2SO4, and MgSO4 rejections of 99.0–99.6% at 150 psi with a water permeance of 0.9 L m−2 h−1 bar−1. Compared to the thin-film composite (TFC) control membrane, the incorporation of the MOF particles yields a 53.0% and 24.5% increase in water permeance and NaCl rejection. Importantly, the TFN membranes also exhibit excellent rejections to small neutral contaminants such as PEG200 (99.2% rejection) and boric acid (89.0% rejection at a pH value of 7.5) at a relatively low pressure of 150 psi, which is higher than the respective value obtained by the commercial Dow SW30XLE TFC control membrane at the same conditions. The outstanding long-term performance stability revealed the robust structure of the MOF TFN membranes. Our results demonstrate a facile strategy to effectively control particle agglomeration and interfacial defects in polyamide TFN membranes by manipulating the surface chemistry of the filler nanoparticles, which can be applied to the fabrication of effective TFN membranes with molecular level size-exclusion selectivity.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
1秒前
QQ完成签到,获得积分10
3秒前
蔚欢发布了新的文献求助10
5秒前
7秒前
Akim应助罗拉采纳,获得10
8秒前
丘比特应助Heartlark采纳,获得10
8秒前
8秒前
延文星完成签到,获得积分20
10秒前
11秒前
xyj6486发布了新的文献求助10
11秒前
13秒前
13秒前
13秒前
bkagyin应助shao采纳,获得10
13秒前
糟糕的日记本完成签到,获得积分10
13秒前
蔚欢完成签到,获得积分10
14秒前
mx发布了新的文献求助10
16秒前
一川烟叶完成签到,获得积分10
16秒前
17秒前
时尚俊驰发布了新的文献求助10
18秒前
18秒前
整齐小松鼠应助mini采纳,获得10
20秒前
恋雅颖月应助liii采纳,获得10
22秒前
罗拉发布了新的文献求助10
24秒前
persist完成签到,获得积分10
25秒前
讨厌科研发布了新的文献求助10
25秒前
沉默曼文发布了新的文献求助40
26秒前
研友_VZG7GZ应助如梦如幻91采纳,获得10
26秒前
27秒前
充电宝应助mx采纳,获得10
28秒前
隐形曼青应助时尚俊驰采纳,获得10
29秒前
30秒前
量子星尘发布了新的文献求助10
30秒前
科研通AI5应助文献采纳,获得30
33秒前
cyan关注了科研通微信公众号
33秒前
34秒前
Qi发布了新的文献求助10
34秒前
领导范儿应助张钦奎采纳,获得10
35秒前
shao完成签到,获得积分10
35秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989378
求助须知:如何正确求助?哪些是违规求助? 3531442
关于积分的说明 11254002
捐赠科研通 3270126
什么是DOI,文献DOI怎么找? 1804887
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809173