Journal ArticleDOI
Selective Gas Transport Through Few-Layered Graphene and Graphene Oxide Membranes
Hyo Won Kim,Hee Wook Yoon,Seon-Mi Yoon,Seon-Mi Yoon,Byung Min Yoo,Byung Kook Ahn,Young Hoon Cho,Hye Jin Shin,Hoichang Yang,Ungyu Paik,Soongeun Kwon,Jae-Young Choi,Jae-Young Choi,Ho Bum Park +13 more
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TLDR
It is demonstrated that few- and several-layered graphene and graphene oxide (GO) sheets can be engineered to exhibit the desired gas separation characteristics, and tunable gas transport behavior was strongly dependent on the degree of interlocking within the GO stacking structure.Abstract:
Graphene is a distinct two-dimensional material that offers a wide range of opportunities for membrane applications because of ultimate thinness, flexibility, chemical stability, and mechanical strength. We demonstrate that few- and several-layered graphene and graphene oxide (GO) sheets can be engineered to exhibit the desired gas separation characteristics. Selective gas diffusion can be achieved by controlling gas flow channels and pores via different stacking methods. For layered (3- to 10-nanometer) GO membranes, tunable gas transport behavior was strongly dependent on the degree of interlocking within the GO stacking structure. High carbon dioxide/nitrogen selectivity was achieved by well-interlocked GO membranes in high relative humidity, which is most suitable for postcombustion carbon dioxide capture processes, including a humidified feed stream.read more
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Maximizing the right stuff: The trade-off between membrane permeability and selectivity
TL;DR: The permeability/selectivity trade-off is discussed, similarities and differences between synthetic and biological membranes are highlighted, challenges for existing membranes are described, and fruitful areas of future research are identified.
Journal ArticleDOI
Water desalination using nanoporous single-layer graphene
Sumedh P. Surwade,Sergei N. Smirnov,Ivan Vlassiouk,Raymond R. Unocic,Gabriel M. Veith,Sheng Dai,Shannon M. Mahurin +6 more
TL;DR: It is shown that single-layer porous graphene can be used as a desalination membrane using an oxygen plasma etching process and exhibits a salt rejection rate of nearly 100% and rapid water transport.
Journal ArticleDOI
Ion sieving in graphene oxide membranes via cationic control of interlayer spacing
Liang Chen,Guosheng Shi,Jie Shen,Bingquan Peng,Bowu Zhang,Yuzhu Wang,Fenggang Bian,Jiajun Wang,Deyuan Li,Deyuan Li,Zhe Qian,Gang Xu,Gongping Liu,Jianrong Zeng,Lijuan Zhang,Y. Yang,Guoquan Zhou,Minghong Wu,Wanqin Jin,Jingye Li,Haiping Fang +20 more
TL;DR: Here, cationic control of the interlayer spacing of graphene oxide membranes with ångström precision is demonstrated using K+, Na+, Ca2+, Li+ or Mg2+ ions, suggesting that other ions could be used to produce a wider range of interlayer spacings.
Journal ArticleDOI
Graphene oxide-based efficient and scalable solar desalination under one sun with a confined 2D water path
TL;DR: The energy transfer efficiency of this foldable graphene oxide film-based device fabricated by a scalable process is independent of water quantity and can be achieved without optical or thermal supporting systems, therefore significantly improving the scalability and feasibility of this technology toward a complementary portable and personalized water solution.
Journal ArticleDOI
Graphene-based membranes
TL;DR: This tutorial review aims to present the latest groundbreaking advances in both the theoretical and experimental chemical science and engineering of graphene-based membranes, including their design, fabrication and application.
References
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Journal ArticleDOI
Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
Xuesong Li,Weiwei Cai,Jinho An,Seyoung Kim,Junghyo Nah,Dongxing Yang,Richard D. Piner,Aruna Velamakanni,Inhwa Jung,Emanuel Tutuc,Sanjay K. Banerjee,Luigi Colombo,Rodney S. Ruoff +12 more
TL;DR: It is shown that graphene grows in a self-limiting way on copper films as large-area sheets (one square centimeter) from methane through a chemical vapor deposition process, and graphene film transfer processes to arbitrary substrates showed electron mobilities as high as 4050 square centimeters per volt per second at room temperature.
Journal ArticleDOI
Large-scale pattern growth of graphene films for stretchable transparent electrodes
Keun Soo Kim,Yue Zhao,Houk Jang,Sang Yoon Lee,Jong Min Kim,Kwang S. Kim,Jong Hyun Ahn,Philip Kim,Philip Kim,Jae-Young Choi,Byung Hee Hong +10 more
TL;DR: The direct synthesis of large-scale graphene films using chemical vapour deposition on thin nickel layers is reported, and two different methods of patterning the films and transferring them to arbitrary substrates are presented, implying that the quality of graphene grown by chemical vapours is as high as mechanically cleaved graphene.
Journal ArticleDOI
Graphene and Graphene Oxide: Synthesis, Properties, and Applications
TL;DR: An overview of the synthesis, properties, and applications of graphene and related materials (primarily, graphite oxide and its colloidal suspensions and materials made from them), from a materials science perspective.
Journal ArticleDOI
Preparation and Characterization of Graphene Oxide Paper
Dmitriy A. Dikin,Sasha Stankovich,Eric Zimney,Richard D. Piner,Geoffrey Dommett,Guennadi Evmenenko,SonBinh T. Nguyen,Rodney S. Ruoff +7 more
TL;DR: Graphene oxide paper is reported, a free-standing carbon-based membrane material made by flow-directed assembly of individual graphene oxide sheets that outperforms many other paper-like materials in stiffness and strength.