The Innovation (Nov 2022)

The marriage of Xenes and hydrogels: Fundamentals, applications, and outlook

  • Yong Kang,
  • Hanjie Zhang,
  • Liqun Chen,
  • Jinrui Dong,
  • Bin Yao,
  • Xue Yuan,
  • Duotian Qin,
  • Alexey V. Yaremenko,
  • Chuang Liu,
  • Chan Feng,
  • Xiaoyuan Ji,
  • Wei Tao

Journal volume & issue
Vol. 3, no. 6
p. 100327

Abstract

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Hydrogels have blossomed as superstars in various fields, owing to their prospective applications in tissue engineering, soft electronics and sensors, flexible energy storage, and biomedicines. Two-dimensional (2D) nanomaterials, especially 2D mono-elemental nanosheets (Xenes) exhibit high aspect ratio morphology, good biocompatibility, metallic conductivity, and tunable electrochemical properties. These fascinating characteristics endow numerous tunable application-specific properties for the construction of Xene-based hydrogels. Hierarchical multifunctional hydrogels can be prepared according to the application requirements and can be effectively tuned by different stimulation to complete specific tasks in a spatiotemporal sequence. In this review, the synthesis mechanism, properties, and emerging applications of Xene hydrogels are summarized, followed by a discussion on expanding the performance and application range of both hydrogels and Xenes. Public summary: • Two-dimensional mono-elemental nanosheets (Xenes) endow tunable application • Synthesis mechanism, properties, and applications of Xene hydrogels are summarized • Expanding performance and applications of both hydrogels and Xenes are presented

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