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<p>Graphene oxide (GO) membranes offer high selectivity and energy-efficient gas separation. However, their dense, layered structure and tortuous diffusion paths limit permeability, posing a barrier to industrial use. Here we present a method to enhance selectivity and permeability, maintaining the structural stability of such membranes. With an industrially friendly manufacturing method, we produce crumpled GO membranes with gas diffusion pathways controlled by a multidomain structure. These membranes achieve H<sub>2</sub> permeability of approximately 2.1 × 10<sup>4</sup> barrer, significantly surpassing the permeability of flat lamellar GO membranes, which is below 100 barrer. Its H<sub>2</sub>/CO<sub>2</sub> selectivity of 91 outperforms current membrane technologies. In addition, the crumpled membranes demonstrate stability under harsh conditions (−20 °C, 96% relative humidity), a critical requirement for practical applications. This work addresses the long-standing permeability–selectivity trade-off and establishes a robust, scalable platform for integrating two-dimensional materials into membrane technology for real-world applications.</p>

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Strain-induced crumpling of graphene oxide lamellas to achieve fast and selective transport of H2 and CO2

  • 期刊论文

  • 发表日期：

    2025年7月14日

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  • Pengxiang Zhang,
  • Qian Wang,
  • Yixin Zhang,
  • Mo Lin,
  • Xin Zhou,
  • Ashish David,
  • Andrey Ustyuzhanin,
  • Musen Chen,
  • Mikhail I. Katsnelson,
  • Maxim Trubyanov,
  • Kostya S. Novoselov,
  • Daria V. Andreeva

摘要

Graphene oxide (GO) membranes offer high selectivity and energy-efficient gas separation. However, their dense, layered structure and tortuous diffusion paths limit permeability, posing a barrier to industrial use. Here we present a method to enhance selectivity and permeability, maintaining the structural stability of such membranes. With an industrially friendly manufacturing method, we produce crumpled GO membranes with gas diffusion pathways controlled by a multidomain structure. These membranes achieve H2 permeability of approximately 2.1 × 104 barrer, significantly surpassing the permeability of flat lamellar GO membranes, which is below 100 barrer. Its H2/CO2 selectivity of 91 outperforms current membrane technologies. In addition, the crumpled membranes demonstrate stability under harsh conditions (−20 °C, 96% relative humidity), a critical requirement for practical applications. This work addresses the long-standing permeability–selectivity trade-off and establishes a robust, scalable platform for integrating two-dimensional materials into membrane technology for real-world applications.