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Designing hierarchical nanoporous membranes for highly efficient gas adsorption and storage.
Mao, Haiyan; Tang, Jing; Chen, Jun; Wan, Jiayu; Hou, Kaipeng; Peng, Yucan; Halat, David M; Xiao, Liangang; Zhang, Rufan; Lv, Xudong; Yang, Ankun; Cui, Yi; Reimer, Jeffrey A.
Afiliación
  • Mao H; Department of Chemical and Biomolecular Engineering, Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.
  • Tang J; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
  • Chen J; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 S and Hill Road, Menlo Park, CA 94025, USA.
  • Wan J; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
  • Hou K; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
  • Peng Y; Department of Chemical and Biomolecular Engineering, Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.
  • Halat DM; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
  • Xiao L; Department of Chemical and Biomolecular Engineering, Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.
  • Zhang R; Materials Science Division, Lawrence Berkeley National Lab, Berkeley, CA 94720, USA.
  • Lv X; Materials Science Division, Lawrence Berkeley National Lab, Berkeley, CA 94720, USA.
  • Yang A; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
  • Cui Y; Department of Chemical and Biomolecular Engineering, Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA.
  • Reimer JA; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
Sci Adv ; 6(41)2020 Oct.
Article en En | MEDLINE | ID: mdl-33028517
ABSTRACT
Nanoporous membranes with two-dimensional materials such as graphene oxide have attracted attention in volatile organic compounds (VOCs) and H2 adsorption because of their unique molecular sieving properties and operational simplicity. However, agglomeration of graphene sheets and low efficiency remain challenging. Therefore, we designed hierarchical nanoporous membranes (HNMs), a class of nanocomposites combined with a carbon sphere and graphene oxide. Hierarchical carbon spheres, prepared following Murray's law using chemical activation incorporating microwave heating, act as spacers and adsorbents. Hierarchical carbon spheres preclude the agglomeration of graphene oxide, while graphene oxide sheets physically disperse, ensuring structural stability. The obtained HNMs contain micropores that are dominated by a combination of ultramicropores and mesopores, resulting in high VOCs/H2 adsorption capacity, up to 235 and 352 mg/g at 200 ppmv and 3.3 weight % (77 K and 1.2 bar), respectively. Our work substantially expands the potential for HNMs applications in the environmental and energy fields.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
Añadir a Mi BVS
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos