Highly stable gold nanolayer membrane for efficient solar water evaporation under a harsh environment.

Ibrahim, I; Seo, DH; Park, MJ; Angeloski, A; McDonagh, A; Bendavid, A; Shon, HK; Tijing, L

Highly stable gold nanolayer membrane for efficient solar water evaporation under a harsh environment.

Ibrahim, I Seo, DH Park, MJ Angeloski, A

McDonagh, A

Bendavid, A Shon, HK Tijing, L

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Chemosphere, 2022, 299, pp. 134394
Issue Date:: 2022-07

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Field	Value	Language
dc.contributor.author	Ibrahim, I
dc.contributor.author	Seo, DH
dc.contributor.author	Park, MJ
dc.contributor.author	Angeloski, A https://orcid.org/0000-0003-4395-1829
dc.contributor.author	McDonagh, A https://orcid.org/0000-0002-9502-1175
dc.contributor.author	Bendavid, A
dc.contributor.author	Shon, HK
dc.contributor.author	Tijing, L https://orcid.org/0000-0001-9398-6355
dc.date.accessioned	2023-02-06T01:00:45Z
dc.date.available	2022-03-19
dc.date.available	2023-02-06T01:00:45Z
dc.date.issued	2022-07
dc.identifier.citation	Chemosphere, 2022, 299, pp. 134394
dc.identifier.issn	0045-6535
dc.identifier.issn	1879-1298
dc.identifier.uri	http://hdl.handle.net/10453/165925
dc.description.abstract	Interfacial solar water evaporation has attracted tremendous attention for sunlight harvesting for water purification. However, salt formation and stability of the photothermal materials (PTMs) remain a challenge that need addressing before bringing this technology to real-world applications. In this work, a nanoscale thin film of gold (Au) on a polytetrafluoroethylene (PTFE) membrane has been prepared using a magnetic sputtering technique. The fabricated membrane displays a robust mechanical strength and chemical stability arising from the adhesiveness of the thin film Au nanolayer on the PTFE membrane as well as the chemical inertness of the noble metal PTM. The Au nanolayer/PTFE membrane with cellulose sponge substrate resulted in an evaporation rate of 0.88 kg m-2 h-1 under 1 sun intensity. Remarkable salt ion rejection of 99.9% has been obtained, meeting the required standard for drinking water. Moreover, the membrane exhibited excellent stability and reusability in natural seawater and high salinity brine (150 g/L) and even in severe conditions (acidic, basic, and oxidized). No noticeable salt formation was observed on the evaporator surface after the tests. These findings reveal promising prospects for using a magnetron sputtering technique to fabricate a stable photothermal membrane for seawater and high salinity brine desalination.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier
dc.relation.ispartof	Chemosphere
dc.relation.isbasedon	10.1016/j.chemosphere.2022.134394
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Environmental Sciences
dc.subject.classification	Meteorology & Atmospheric Sciences
dc.subject.mesh	Gold
dc.subject.mesh	Polytetrafluoroethylene
dc.subject.mesh	Sunlight
dc.subject.mesh	Water
dc.subject.mesh	Water Purification
dc.subject.mesh	Gold
dc.subject.mesh	Water
dc.subject.mesh	Polytetrafluoroethylene
dc.subject.mesh	Sunlight
dc.subject.mesh	Water Purification
dc.subject.mesh	Gold
dc.subject.mesh	Polytetrafluoroethylene
dc.subject.mesh	Sunlight
dc.subject.mesh	Water
dc.subject.mesh	Water Purification
dc.title	Highly stable gold nanolayer membrane for efficient solar water evaporation under a harsh environment.
dc.type	Journal Article
utslib.citation.volume	299
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2024-07-01T00:00:00+1000Z
dc.date.updated	2023-02-06T01:00:43Z
pubs.publication-status	Published
pubs.volume	299

Abstract:

Interfacial solar water evaporation has attracted tremendous attention for sunlight harvesting for water purification. However, salt formation and stability of the photothermal materials (PTMs) remain a challenge that need addressing before bringing this technology to real-world applications. In this work, a nanoscale thin film of gold (Au) on a polytetrafluoroethylene (PTFE) membrane has been prepared using a magnetic sputtering technique. The fabricated membrane displays a robust mechanical strength and chemical stability arising from the adhesiveness of the thin film Au nanolayer on the PTFE membrane as well as the chemical inertness of the noble metal PTM. The Au nanolayer/PTFE membrane with cellulose sponge substrate resulted in an evaporation rate of 0.88 kg m-2 h-1 under 1 sun intensity. Remarkable salt ion rejection of 99.9% has been obtained, meeting the required standard for drinking water. Moreover, the membrane exhibited excellent stability and reusability in natural seawater and high salinity brine (150 g/L) and even in severe conditions (acidic, basic, and oxidized). No noticeable salt formation was observed on the evaporator surface after the tests. These findings reveal promising prospects for using a magnetron sputtering technique to fabricate a stable photothermal membrane for seawater and high salinity brine desalination.

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http://hdl.handle.net/10453/165925