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Lithium-Doped Silica-Rich MIL-101(Cr) for Enhanced Hydrogen Uptake.

Dharmendra K PanchariyaE Anil KumarSanjay Kumar Singh
Published in: Chemistry, an Asian journal (2019)
Metal-organic frameworks (MOFs) show promising characteristics for hydrogen storage application. In this direction, modification of under-utilized large pore cavities of MOFs has been extensively explored as a promising strategy to further enhance the hydrogen storage properties of MOFs. Here, we described a simple methodology to enhance the hydrogen uptake properties of RHA incorporated MIL-101 (RHA-MIL-101, where RHA is rice husk ash-a waste material) by controlled doping of Li+ ions. The hydrogen gas uptake of Li-doped RHA-MIL-101 is significantly higher (up to 72 %) compared to the undoped RHA-MIL-101, where the content of Li+ ions doping greatly influenced the hydrogen uptake properties. We attributed the observed enhancement in the hydrogen gas uptake of Li-doped RHA-MIL-101 to the favorable Li+ ion-to-H2 interactions and the cooperative effect of silanol bonds of silica-rich rice-husk ash incorporated in MIL-101.
Keyphrases
  • metal organic framework
  • ion batteries
  • visible light
  • quantum dots
  • solid state
  • heavy metals
  • room temperature
  • high resolution
  • simultaneous determination