Bio-inspired Double Angstrom-Scale Confinement in Ti-deficient Ti0.87 O2 Nanosheet Membranes for Ultrahigh-performance Osmotic Power Generation.

Liu, C; Ye, C; Zhang, T; Tang, J; Mao, K; Chen, L; Xue, L; Sun, J; Zhang, W; Wang, X; Xiong, P; Wang, G; Zhu, J

Bio-inspired Double Angstrom-Scale Confinement in Ti-deficient Ti0.87 O2 Nanosheet Membranes for Ultrahigh-performance Osmotic Power Generation.

Liu, C Ye, C Zhang, T Tang, J Mao, K Chen, L Xue, L Sun, J Zhang, W Wang, X Xiong, P Wang, G

Zhu, J

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Publisher:: WILEY-V C H VERLAG GMBH
Publication Type:: Journal Article
Citation:: Angew Chem Int Ed Engl, 2024, 63, (4), pp. e202315947
Issue Date:: 2024-01-22

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Field	Value	Language
dc.contributor.author	Liu, C
dc.contributor.author	Ye, C
dc.contributor.author	Zhang, T
dc.contributor.author	Tang, J
dc.contributor.author	Mao, K
dc.contributor.author	Chen, L
dc.contributor.author	Xue, L
dc.contributor.author	Sun, J
dc.contributor.author	Zhang, W
dc.contributor.author	Wang, X
dc.contributor.author	Xiong, P
dc.contributor.author	Wang, G https://orcid.org/0000-0003-4295-8578
dc.contributor.author	Zhu, J
dc.date.accessioned	2024-11-22T02:30:40Z
dc.date.available	2024-11-22T02:30:40Z
dc.date.issued	2024-01-22
dc.identifier.citation	Angew Chem Int Ed Engl, 2024, 63, (4), pp. e202315947
dc.identifier.issn	1433-7851
dc.identifier.issn	1521-3773
dc.identifier.uri	http://hdl.handle.net/10453/182057
dc.description.abstract	Osmotic power, a clean energy source, can be harvested from the salinity difference between seawater and river water. However, the output power densities are hampered by the trade-off between ion selectivity and ion permeability. Here we propose an effective strategy of double angstrom-scale confinement (DAC) to design ion-permselective channels with enhanced ion selectivity and permeability simultaneously. The fabricated DAC-Ti0.87 O2 membranes possess both Ti atomic vacancies and an interlayer free spacing of ≈2.2 Å, which not only generates a profitable confinement effect for Na+ ions to enable high ion selectivity but also induces a strong interaction with Na+ ions to benefit high ion permeability. Consequently, when applied to osmotic power generation, the DAC-Ti0.87 O2 membranes achieved an ultrahigh power density of 17.8 W m-2 by mixing 0.5/0.01 M NaCl solution and up to 114.2 W m-2 with a 500-fold salinity gradient, far exceeding all the reported macroscopic-scale membranes. This work highlights the potential of the construction of DAC ion-permselective channels for two-dimensional materials in high-performance nanofluidic energy systems.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	WILEY-V C H VERLAG GMBH
dc.relation	http://purl.org/au-research/grants/arc/IH180100020
dc.relation	http://purl.org/au-research/grants/arc/DP200101249
dc.relation	http://purl.org/au-research/grants/arc/DP210101389
dc.relation	http://purl.org/au-research/grants/arc/DP230101579
dc.relation	University of Technology Sydney
dc.relation	http://purl.org/au-research/grants/arc/LP200200926
dc.relation.ispartof	Angew Chem Int Ed Engl
dc.relation.isbasedon	10.1002/anie.202315947
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	03 Chemical Sciences
dc.subject.classification	Organic Chemistry
dc.subject.classification	34 Chemical sciences
dc.title	Bio-inspired Double Angstrom-Scale Confinement in Ti-deficient Ti0.87 O2 Nanosheet Membranes for Ultrahigh-performance Osmotic Power Generation.
dc.type	Journal Article
utslib.citation.volume	63
utslib.location.activity	Germany
utslib.for	03 Chemical Sciences
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	University of Technology Sydney/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Centre for Clean Energy Technology (CCET)
utslib.copyright.status	open_access	*
dc.rights.license	This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/
dc.date.updated	2024-11-22T02:30:38Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	63
utslib.citation.issue	4

Abstract:

Osmotic power, a clean energy source, can be harvested from the salinity difference between seawater and river water. However, the output power densities are hampered by the trade-off between ion selectivity and ion permeability. Here we propose an effective strategy of double angstrom-scale confinement (DAC) to design ion-permselective channels with enhanced ion selectivity and permeability simultaneously. The fabricated DAC-Ti0.87 O2 membranes possess both Ti atomic vacancies and an interlayer free spacing of ≈2.2 Å, which not only generates a profitable confinement effect for Na+ ions to enable high ion selectivity but also induces a strong interaction with Na+ ions to benefit high ion permeability. Consequently, when applied to osmotic power generation, the DAC-Ti0.87 O2 membranes achieved an ultrahigh power density of 17.8 W m-2 by mixing 0.5/0.01 M NaCl solution and up to 114.2 W m-2 with a 500-fold salinity gradient, far exceeding all the reported macroscopic-scale membranes. This work highlights the potential of the construction of DAC ion-permselective channels for two-dimensional materials in high-performance nanofluidic energy systems.

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http://hdl.handle.net/10453/182057