Preparation and hydrogen evolution properties of platinum nanocluster catalysts
The electrocatalytic hydrogen production technology plays a pivotal role in promoting the development of clean energy.Based on the strong metal-support interactions,the Pt nanocluster material on porous nitrogen doped carbon materials was prepared by using the anchoring effect of iron single atom(Pt@Fe-N-C),and the material underwent structural characterization and electrocatalytic testing.The results show that the Pt@Fe-N-C material inherits the porous dodecahedron structure of ZIF-8,in which iron single atoms have an anchoring effect and thus disperse the platinum nanoclusters.Pt@Fe-N-C exhibits excellent electrocatalytic HER(hydrogen evolution reaction)activity and stability in 0.5 mol/L sulfuric acid solution with an overpotential η10 of 17 mV,and the increase of η10 is only 4 mV after degradation of the 3 000-cycling test.In addition,the mass-activity of Pt@Fe-N-C[12.43 mA/(cm2·μg)]is 6.1 times than that of commercial Pt/C[2.05 mA/(cm2·μg)]at overpotential of 20 mV(vs.Ag/AgCl).As a result,the dispersion of platinum through the single-atom anchoring effect is an effective strategy to reduce the loading of precious metals,and this approach provides a new idea for the future development of low-precious-metal electrocatalytic materials.
catalyststrong metal-support interactionsnano materialshydrogen energyrenewable energy
国家科技期刊平台
NSTL
万方数据
