A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation

Abstract We report a facile method for preparing silver-loaded membranes for point-of-use disinfection and disaster relief applications. A bio-inspired material, polydopamine, was coated onto a highly porous nanofibrous polyacrylonitrile substrate. We then take advantage of the redox properties of p...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jianqiang Wang, Yichao Wu, Zhe Yang, Hao Guo, Bin Cao, Chuyang Y. Tang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8ae10f0f443b4d4f8f3a6cb90b486484
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:8ae10f0f443b4d4f8f3a6cb90b486484
record_format	dspace
spelling	oai:doaj.org-article:8ae10f0f443b4d4f8f3a6cb90b4864842021-12-02T12:32:42ZA novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation10.1038/s41598-017-02452-22045-2322https://doaj.org/article/8ae10f0f443b4d4f8f3a6cb90b4864842017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02452-2https://doaj.org/toc/2045-2322Abstract We report a facile method for preparing silver-loaded membranes for point-of-use disinfection and disaster relief applications. A bio-inspired material, polydopamine, was coated onto a highly porous nanofibrous polyacrylonitrile substrate. We then take advantage of the redox properties of polydopamine to form silver nanoparticles in situ. These nanoparticles were uniformly distributed on the surface of nanofibers with no apparent agglomeration at a silver loading up to 4.36 wt.% (cPAN-Ag1.5). The silver-incorporated membrane cPAN-Ag1.5 achieved a high pure water flux of 130 Lm−2 h−1 at 10-cm water head, demonstrating the feasibility of energy-efficient gravity-driven filtration and eliminating the need for electrical power. The strong anti-bacterial activity and high physical rejection of the membrane led to an excellent disinfection power, with no viable bacterial cells detected in its permeate water. The membrane exhibited >7 log reduction for E. coli and >6 log reduction for B. subtilis. The strategy reported here provides an efficient and green route to synthesize point-of-use membranes. Combining their excellent permeability and disinfection effectiveness, these membranes offer an ideal solution to water supply in disaster-affected areas.Jianqiang WangYichao WuZhe YangHao GuoBin CaoChuyang Y. TangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jianqiang Wang Yichao Wu Zhe Yang Hao Guo Bin Cao Chuyang Y. Tang A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation
description	Abstract We report a facile method for preparing silver-loaded membranes for point-of-use disinfection and disaster relief applications. A bio-inspired material, polydopamine, was coated onto a highly porous nanofibrous polyacrylonitrile substrate. We then take advantage of the redox properties of polydopamine to form silver nanoparticles in situ. These nanoparticles were uniformly distributed on the surface of nanofibers with no apparent agglomeration at a silver loading up to 4.36 wt.% (cPAN-Ag1.5). The silver-incorporated membrane cPAN-Ag1.5 achieved a high pure water flux of 130 Lm−2 h−1 at 10-cm water head, demonstrating the feasibility of energy-efficient gravity-driven filtration and eliminating the need for electrical power. The strong anti-bacterial activity and high physical rejection of the membrane led to an excellent disinfection power, with no viable bacterial cells detected in its permeate water. The membrane exhibited >7 log reduction for E. coli and >6 log reduction for B. subtilis. The strategy reported here provides an efficient and green route to synthesize point-of-use membranes. Combining their excellent permeability and disinfection effectiveness, these membranes offer an ideal solution to water supply in disaster-affected areas.
format	article
author	Jianqiang Wang Yichao Wu Zhe Yang Hao Guo Bin Cao Chuyang Y. Tang
author_facet	Jianqiang Wang Yichao Wu Zhe Yang Hao Guo Bin Cao Chuyang Y. Tang
author_sort	Jianqiang Wang
title	A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation
title_short	A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation
title_full	A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation
title_fullStr	A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation
title_full_unstemmed	A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation
title_sort	novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8ae10f0f443b4d4f8f3a6cb90b486484
work_keys_str_mv	AT jianqiangwang anovelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT yichaowu anovelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT zheyang anovelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT haoguo anovelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT bincao anovelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT chuyangytang anovelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT jianqiangwang novelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT yichaowu novelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT zheyang novelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT haoguo novelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT bincao novelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation AT chuyangytang novelgravitydrivennanofibrousmembraneforpointofusewaterdisinfectionpolydopamineinducedinsitusilverincorporation
_version_	1718393990808600576

A novel gravity-driven nanofibrous membrane for point-of-use water disinfection: polydopamine-induced in situ silver incorporation

Ejemplares similares