Strongly Coupled Pt-Ni2GeO4 Hybrid Nanostructures as Potential Nanocatalysts for CO Oxidation

Abstract

A facile and low-cost method has been developed to successfully fabricate 3D flower-like and sphere-like Ni2GeO4 nanostructures with tunable sizes and shapes. It is found that the hard template, polymethyl methacrylate (PMMA) nanopsheres, is essential to the formation of the final products. The as-prepared nanostructures can serve as an outstanding support for Pt nanoparticles after surface modification with l-lysine. In the catalytic test of CO oxidation, Pt-Ni2GeO4 nanoflowers exhibited much higher catalytic performance compared with Pt-Ni2GeO4 nanospheres, representing a typical size-dependent catalytic property