國家衛生研究院 NHRI:Item 3990099045/15982

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Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/15982

Title:	Enhancing ionic selectivity and osmotic energy by using an ultrathin Zr-MOF-based heterogeneous membrane with trilayered continuous porous structure
Authors:	Yang, ZJ;Yeh, LH;Peng, YH;Chuang, YP;Wu, KC
Contributors:	Institute of Biomedical Engineering and Nanomedicine
Abstract:	Designing a nanofluidic membrane with high selectivity and fast ion transport property is the key towards high-performance osmotic energy conversion. However, most of reported membranes can produce power density less than commercial benchmark (5 W/m(2)), due to the imbalance between ion selectivity and permeability. Here, we report a novel nanoarchitectured design of a heterogeneous membrane with an ultrathin and dense zirconium-based UiO-66-NH(2) metal-organic framework (MOF) layer and a highly aligned and interconnected branched alumina nanochannel membrane. The design leads to a continuous trilayered pore structure of large geometry gradient in the sequence from angstrom-scale to nano-scale to sub-microscale, which enables the enhanced directional ion transport, and the angstrom-sized (~6.6-7 Å) UiO-66-NH(2) windows render the membrane with high ion selectivity. Consequently, the novel heterogeneous membrane can achieve a high-performance power of ~8 W/m(2) by mixing synthetic seawater and river water. The power density can be largely upgraded to an ultrahigh ~17.1 W/m(2) along with ~48.5 % conversion efficiency at a 50-fold KCl gradient. This work not only presents a new membrane design approach but also showcases the great potential of employing the zirconium-based MOF channels as ion-channel-mimetic membranes for highly efficient blue energy harvesting.
Date:	2024-06-07
Relation:	Angewandte Chemie. 2024 Jun 07;Article in Press.
Link to:	http://dx.doi.org/10.1002/anie.202408375
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1433-7851&DestApp=IC2JCR
Cited Times(Scopus):	https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85199071254
Appears in Collections:	[Chia-Wen Wu] Periodical Articles

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