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Two-Dimensional Ti3C2Tx MXene/GO Hybrid Membranes for Highly Efficient Osmotic Power Generation
journal contribution
posted on 2020-02-24, 16:06 authored by Haiping Gao, Wensi Chen, Chunyan Xu, Su Liu, Xin Tong, Yongsheng ChenOsmotic power has
emerged as one of the promising candidates for
clean and renewable energy. However, the advancement of present osmotic
power-harvesting technologies, specifically pressure-retarded osmosis
(PRO) in this work, is hindered by the unsatisfactory membrane transport
properties. Herein, we demonstrate the freestanding transition-metal
carbides and graphene oxide hybrid membranes as high-performance PRO
membranes. Due to the elimination of internal concentration polarization,
the freestanding hybrid membrane can achieve a record-high power density
up to approximately 56.4 W m–2 with 2.0 M NaCl as
the draw solution and river water (0.017 M) as the feed water at an
applied hydraulic pressure difference of 9.66 bar. In addition, the
hybrid membranes exhibit enhanced antifouling potential and antibacterial
activity. The facile fabrication of the hybrid membranes shed light
on a new membrane development platform for the highly anticipated
osmotic power-harvesting technologies.