A functionalized graphene supported nickel palladium bi-metal nanometer catalyst, and preparation and applications of the catalyst

Abstract

A functionalized graphene supported nickel palladium bi-metal nanometer catalyst, and preparation and applications of the catalyst are provided. A preparation method does not include a high-temperature hydrothermal reaction or a step of adding other catalysts, and only includes adding nickel chloride (NiCl2) and sodium tetrachloropalladate (Na2PdCl4) which are metal precursors into a mixed solution of 3-aminopropyl-3-ethoxysilane (APTS) and graphite oxide (GO), rapidly reducing Ni<2+> and Pd<2+> ions into NiPd metal particles by utilizing sodium borohydride (NaBH4) and allowing the metal particles to grow on a -NH2-functionalized graphene substrate (NiPd/N-FG). The prepared nickel palladium metal nanometer particles are uniformly distributed on the substrate and have a very small particle size (1.2-2.4 nm). The synthesized Ni<0.4>Pd<0.6>/N-FG catalyst still has extremely good catalytic performance when the content of the non-noble metal Ni accounts for 40% of the total metal content. The method is simple, effective and low in cost, overcomes problems such as long synthesis time, high synthesis temperatures, and high nanometer particle sizes, and promotes practical application of formic acid as a hydrogen storage material in fuel cells and vehicle-mounted mobile hydrogen source materials.

Description

technical field [0001] The invention belongs to the field of catalyst preparation and the sustainable development of the environment and energy, in particular to a -NH prepared by a one-step reduction method 2 Preparation of functionalized graphene-supported nickel-palladium bimetallic nanocatalyst and its application in formic acid hydrolysis for hydrogen production. Background technique [0002] With the emergence of the energy crisis, the continuous reduction of fossil fuels and the increasingly severe environmental pollution caused by fossil fuels, it is very important to find an alternative clean and renewable new energy. Hydrogen energy, as an abundant, renewable, and pollution-free energy source, is considered to be a very promising energy carrier for transportation and power generation applications. Therefore, in the process of realizing a hydrogen energy society, finding an efficient and safe hydrogen storage material has become the most difficult challenge. Formi...

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However, transition group non-noble metal NPs are less st

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