Ultrathin coordination-crosslinked nacre-inspired hydrogel superwetting membranes with enhanced mechanical stability for high-performance emulsion separation

材料科学 乳状液 化学工程 涂层 韧性 复合材料 单宁酸 聚乙烯醇 化学 有机化学 生物化学 工程类
作者
Jiangdong Dai,Lulu Yu,Jie Liu,Lulu Wang,Junda Wu,Ruilong Zhang,Li Chen,Xiaohua Tian,Xiaohui Dai,Jianming Pan
出处
期刊:Journal of Membrane Science [Elsevier BV]
卷期号:694: 122445-122445 被引量:11
标识
DOI:10.1016/j.memsci.2024.122445
摘要

Superwetting membranes have considerable potentials in the field of water treatment, especially for oil-water separation, however it still keeps great challenges to prepare ones with high mechanical property and strong interfacial cohesion strength. Herein, inspired by high hardness yet toughness of natural nacre, we proposed a polyphenol-mediated inner-outer through type modification strategy to fabricate ultrathin coordination-crosslinked nacre-inspired hydrogel superwetting membranes (named PVDF/GPT/Fe), using 2D graphene oxide (GO) nanosheets, flexible polyvinyl alcohol (PVA) and branched structure tannic acid (TA) as the assembly units, and Fe3+ ion as the cross-linking agent. It is found that PVA-TA interface assembly is key to realize the inner-outer through type hydrophilic modification for the hydrophobic PVDF membrane, to achieve superhydrophilicity and underwater superoleophobicity with the UOCAs of above 150°, ultra-low oil-adhesion and self-cleaning property, with a high flux recovery ratio of 96.3 % after six cycles. The PVDF/GPT/Fe membrane exhibits the boosted mechanical strength and damage resistance, with the Young's modulus of up to 1076 MPa, which is enhanced by 4.4 times, compared to the pristine PVDF membrane, benefiting from the formation of the layered brick-and-mortar structured nacre-inspired hydrogel coating and strong bonding strength of the interfaces between the base membrane and the top coating layer. The separation efficiencies of the PVDF/GPT/Fe membrane for various oil-in-water emulsions are higher than 99.5 % and the largest emulsion permeance is 611.2 L m-2 h-1 bar-1. Our research extends the path route to design and manufacture novel biomimetic superwetting membranes with high mechanical strength and durability.
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
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
梧桐雨210发布了新的文献求助10
1秒前
1秒前
2秒前
星辰大海应助scifff采纳,获得10
2秒前
Backto1998发布了新的文献求助20
2秒前
2秒前
钦钦完成签到 ,获得积分10
2秒前
3秒前
kkkkkk8完成签到,获得积分10
3秒前
3秒前
亥姆霍兹发布了新的文献求助10
3秒前
量子星尘发布了新的文献求助10
4秒前
shuangcheng发布了新的文献求助20
4秒前
fff发布了新的文献求助10
5秒前
小摩托完成签到,获得积分10
5秒前
angelsknight发布了新的文献求助30
5秒前
7秒前
学医的小胖子完成签到 ,获得积分10
7秒前
7秒前
7秒前
8秒前
AA发布了新的文献求助10
8秒前
9秒前
pphhhhaannn完成签到,获得积分10
9秒前
量子星尘发布了新的文献求助20
10秒前
搜集达人应助明亮无颜采纳,获得30
10秒前
11秒前
希望天下0贩的0应助cy采纳,获得10
11秒前
海狗发布了新的文献求助10
11秒前
wbj0722完成签到,获得积分10
12秒前
会飞的鱼完成签到,获得积分10
12秒前
pphhhhaannn发布了新的文献求助10
12秒前
bigxianyu发布了新的文献求助10
13秒前
领导范儿应助有一颗卤蛋采纳,获得10
13秒前
13秒前
Ava应助涛涛采纳,获得10
13秒前
高大绝义发布了新的文献求助20
13秒前
小冬瓜发布了新的文献求助10
14秒前
高分求助中
Production Logging: Theoretical and Interpretive Elements 2700
Neuromuscular and Electrodiagnostic Medicine Board Review 1000
Statistical Methods for the Social Sciences, Global Edition, 6th edition 600
こんなに痛いのにどうして「なんでもない」と医者にいわれてしまうのでしょうか 510
The Insulin Resistance Epidemic: Uncovering the Root Cause of Chronic Disease  500
Walter Gilbert: Selected Works 500
An Annotated Checklist of Dinosaur Species by Continent 500
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 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3662750
求助须知:如何正确求助?哪些是违规求助? 3223555
关于积分的说明 9752139
捐赠科研通 2933523
什么是DOI,文献DOI怎么找? 1606108
邀请新用户注册赠送积分活动 758266
科研通“疑难数据库(出版商)”最低求助积分说明 734771