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Exploring the Defect Sites in UiO-66 by Decorating Platinum Nanoparticles for an Efficient Hydrogen Evolution
Shamna Muhamed1, Aparna Ravari Kandy1, Arun Karmakar2
1School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala, India 695551.
Abstract:
UiO-66 has been tailored using defect engineering methodology to introduce thiol functionalities into the MOF skeletal structure. The thiolated UiO-66 serves as a scaffold to support the platinum nanoparticles with a size of ∼2 nm through a soft-soft interaction. This Pt@UiO-66-SH, utilized as an HER catalyst, exhibited an overpotential of 57 mV at a current density of 10 mA cm-2 in an acidic medium with a Tafel slope of 75 mV/dec and a high TOF value (389.37 s-1). This catalyst showed long-term durability for 30 h, specifying the potential of the material to produce neat hydrogen.
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