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<p>Metal-organic frameworks (MOFs) and hydrogels have abundant pores, creating much potential for applications in water purification, organic dye adsorption, and so on. In this study, polyvinyl alcohol (PVA) or PVA/chitosan (CS) hydrogel tubes containing <i>in-situ</i> synthesized MOF particles were facilely synthesized, which are capable of removing dyes from flowing fluids. The state of polymer chains during synthesis has a significant impact on microstructures and properties of obtained MOF/hydrogel composites. Hierarchical pores and polar groups endow such devices with good adsorption performance. Besides, a tubular MOF/hydrogel device was found to display excellent flexibility and stability, in which brittle ZIF-8 particles were surrounded and protected by the soft hydrogel matrix effectively. This work supplies a facile and novel strategy to prepare soft MOF/hydrogel tubes for adsorption of pollutants as well as for other potential applications.</p>

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Tubular adsorption devices obtained via facile in-situ synthesis of metal—organic framework particles in hydrogel

  • 期刊论文

  • 发表日期：

    2025年9月11日

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  • Zhijian Peng,
  • Hui Peng,
  • Yiliang Wang,
  • Mingwei Zhang,
  • Songsong Wu,
  • Liantao Hao

摘要

Metal-organic frameworks (MOFs) and hydrogels have abundant pores, creating much potential for applications in water purification, organic dye adsorption, and so on. In this study, polyvinyl alcohol (PVA) or PVA/chitosan (CS) hydrogel tubes containing in-situ synthesized MOF particles were facilely synthesized, which are capable of removing dyes from flowing fluids. The state of polymer chains during synthesis has a significant impact on microstructures and properties of obtained MOF/hydrogel composites. Hierarchical pores and polar groups endow such devices with good adsorption performance. Besides, a tubular MOF/hydrogel device was found to display excellent flexibility and stability, in which brittle ZIF-8 particles were surrounded and protected by the soft hydrogel matrix effectively. This work supplies a facile and novel strategy to prepare soft MOF/hydrogel tubes for adsorption of pollutants as well as for other potential applications.