A novel two dimensional catalytic system was synthesized, platinum metal nanoparticles (Pt NPs) immobilized on exfoliated MgAl-layered double hydroxide (LDH) nanosheets through self-assembly between Pt NPs and LDH nanosheets. The LDH nanosheets effectively provided the large double sides of hydroxide functionality to absorb the Pt NPs, as well as fast diffusion rates of the incoming reactants into catalyst surfaces. This new nanostructure improved the rate of reaction, turnover frequency and reaction durability of Pt NPs on LDH nanosheet without significant loss in conversion efficiencies for the reduction of p-nitrophenol into p-aminophenol by sodium borohydride, maintaining more than 97% of catalytic conversions compared to free Pt NPs as well as commercial Pt/C catalyst.

2D nanostructure of platinum catalysts immobilized in exfoliated layered double hydroxide nanosheets

248th National Meeting (2014)

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