Catecholic Coating and Silver Hybridization of Chitin Nanocrystals for Ultrafiltration Membrane with Continuous Flow Catalysis and Gold Recovery

doi:10.1021/acssuschemeng.7b02633

QIBEBT-IR > 仿生智能材料研究组

	Catecholic Coating and Silver Hybridization of Chitin Nanocrystals for Ultrafiltration Membrane with Continuous Flow Catalysis and Gold Recovery
	Wang, Yanwei 1,2; Zhu, Luting 1; You, Jun1 ; Chen, Fushan 2; Zong, Lu 1; Yan, Xiaofei1 ; Li, Chaoxu1
	2017-11-01
发表期刊	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷号	5 期号:11 页码:10673-10681
摘要	Despite great advantages of chitin for water purification, current researches have lacked the intensive study for the utilization of chitin in high-flux filters. To tackle this, we proposed, for the first time, a facile method for the construction of multifunctional nanoporous chitin ultrafiltration membranes derived from renewable marine resources (shells of shrimp and crab). Chitin nanocrystals with average diameter and length of 43.3 and 446.1 nm were prepared by H2SO4 hydrolysis, and a simple vacuum-filtration method was utilized to convert these uniform dispersed nanocrystals to nanoporous membranes. To greatly improve the permeation flux and functionality of the filtration membranes, a bioinspired dopamine coating procedure was adopted to intercalate high content silver nanoparticles (57.2 wt %) into the chitin nanocrystal matrix, which might construct interfacial regions and foster low-resistance channels for enhancing solvent permeability. The resulting hybrid chitin membranes possessed numerous interconnected nanopores and its thickness could be easily tuned from 100 to 4000 nm by the volume of filtered nanocrystal suspensions. They allow fast permeation of water during vacuum assisted filtration. Typically, the flux of 100 nm thick hybrid filtration membranes with similar to 4 nm cutoff was up to 13400 L m(-2) h(-1) bar(-1), which was nearly 3 orders of magnitude higher than that of commercial filtration membranes. More importantly, the hybridization of Ag nanoparticles also offered the membranes with continuous flow properties, for example, super catalytic activity and substitution reactivity in decomposing toxic organic pollutants and recycling noble Au ions in water.
文章类型	Article
关键词	Chitin Nanocrystal Catecholic Chemistry Ag Nanoparticles Ultrafiltration Membranes Water Purification
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1021/acssuschemeng.7b02633
关键词[WOS]	DISPERSED AG NANOPARTICLES ; CARBON HYBRID MEMBRANES ; IN-SITU SYNTHESIS ; WATER-PURIFICATION ; NANOFILTRATION MEMBRANE ; MOLECULE SEPARATION ; GRAPHENE OXIDE ; REDUCTION ; 4-NITROPHENOL ; MICROSPHERES
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Engineering
项目资助者	National Natural Science Foundation of China(21474125 ; Chinese "1000 Youth Talent Program" ; Shandong "Taishan Youth Scholar Program" ; Shandong Provincial Natural Science Foundation(JQ201609) ; Shandong Collaborative Innovation Centre for Marine Biomass Fiber Materials and Textiles ; 51603224)
WOS类目	Chemistry, Multidisciplinary ; Engineering, Chemical
WOS记录号	WOS:000414825900128
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/9684
专题	仿生智能材料研究组
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Songling Rd 189, Qingdao 266101, Peoples R China 2.Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Sensor Anal Tumor Marker, Minist Educ, Zhengzhou Rd 53, Zhengzhou 266042, Henan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yanwei,Zhu, Luting,You, Jun,et al. Catecholic Coating and Silver Hybridization of Chitin Nanocrystals for Ultrafiltration Membrane with Continuous Flow Catalysis and Gold Recovery[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2017,5(11):10673-10681.
APA	Wang, Yanwei.,Zhu, Luting.,You, Jun.,Chen, Fushan.,Zong, Lu.,...&Li, Chaoxu.(2017).Catecholic Coating and Silver Hybridization of Chitin Nanocrystals for Ultrafiltration Membrane with Continuous Flow Catalysis and Gold Recovery.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,5(11),10673-10681.
MLA	Wang, Yanwei,et al."Catecholic Coating and Silver Hybridization of Chitin Nanocrystals for Ultrafiltration Membrane with Continuous Flow Catalysis and Gold Recovery".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 5.11(2017):10673-10681.