Interfacial Ions Sieving for Ultrafast and Complete Desalination through 2D Nanochannel Defined Graphene Composite Membranes.

ACS Nano
Dian GongGaofeng Zeng

Abstract

The layered graphene membrane has high potential for efficient desalination owing to its frictionless surface and hydrophobic nature. However, it has not been demonstrated so far due to the challenges related to controlling membrane microstructure. Herein, we develop a facile and simple thiol-ene click method to prepare a perfluoro-alkyl grafted graphene (fGraphene) membrane on porous ceramic, which features an ultrahigh antiwetting surface, oriented mesoporous surface entrances, and a well-defined interlamellar spacing of ∼1.1 nm. With vacuum membrane distillation, the fGraphene membranes post ∼100% rejections to the small ions of seawater, at least 1 order of magnitude higher water fluxes than those of commercial membranes and graphene-oxide-based membranes, as well as robust stability in the desalination. Fast NaCl desalinations on the fGraphene membrane were also confirmed by the reverse/forward osmosis tests. The complete rejection of ions and high flux are attributed to the interfacial sieving effect over the 2D nanochannels as well as the vapor-phase transport in the mesoscale channels, which is fundamentally different from the solution-diffusion mechanism of dense polymeric membranes and the size-sieving mechanism of mi...Continue Reading

References

May 20, 2006·Science·Jason K HoltOlgica Bakajin
Nov 21, 2007·Small·Henk VerweijJu Li
Feb 4, 2010·Journal of the American Chemical Society·Hirotaka OkamotoHideyuki Nakano
Aug 14, 2010·Advanced Materials·Yanwu ZhuRodney S Ruoff
Aug 16, 2011·Nature Nanotechnology·Steven P KoenigJ Scott Bunch
Jan 17, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Fereshte TaherianFrédéric Leroy
Mar 19, 2014·Nature Nanotechnology·Jongho LeeRohit Karnik
Jan 13, 2015·Chemistry : a European Journal·Nguyen Dang LuongJukka Seppälä
Mar 24, 2015·Nature Nanotechnology·Sumedh P SurwadeShannon M Mahurin
Apr 4, 2015·ACS Applied Materials & Interfaces·Yi HanChao Gao
Jan 26, 2016·Nano Letters·David Cohen-TanugiJeffrey C Grossman
Mar 1, 2016·ACS Applied Materials & Interfaces·Xiangyuan YeShengrong Yang
Jan 11, 2017·Angewandte Chemie·Li DingHaihui Wang
Aug 18, 2018·Science·Maqsud R ChowdhuryJeffrey R McCutcheon
Jan 24, 2020·Chemical Society Reviews·Shaofei WangZhongyi Jiang

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
Hee Wook YoonHo Bum Park
Journal of Nanoscience and Nanotechnology
Samaneh Rikhtehgaran, Amir Lohrasebi
© 2021 Meta ULC. All rights reserved