• 专利标题:   Preparing wrinkled graphene-based single-atom catalysts used for e.g. electrocatalytic process by preparing graphene oxide suspending solution, mixing with metal precursor solution, atomizing and pyrolyzing, calcining corrugated spherical graphene oxide-based metal single-atom catalyst.
  • 专利号:   CN115896806-A
  • 发明人:   HE G, YE G, FEI H
  • 专利权人:   UNIV HUNAN
  • 国际专利分类:   B01J023/75, B01J035/08, C01B032/184, C01B032/194, C01B032/198, C25B001/04, C25B011/04, C25B003/26, H01M004/88, H01M004/90
  • 专利详细信息:   CN115896806-A 04 Apr 2023 C25B-001/04 202338 Chinese
  • 申请详细信息:   CN115896806-A CN11314100 25 Oct 2022
  • 优先权号:   CN11314100

▎ 摘  要

NOVELTY - Preparing wrinkled graphene-based single-atom catalysts by atomization pyrolysis comprises (1) preparing graphene oxide suspending solution, mixing with the metal precursor solution uniformly to obtain the mixed solution, (2) atomizing and pyrolyzing the mixed solution to obtain the corrugated spherical graphite oxide alkenyl metal single-atom catalyst and (3) calcining the corrugated spherical graphene oxide-based metal single-atom catalyst under an inert or reducing atmosphere to regulate the coordination environment of the single atom to obtain a wrinkled spherical graphene-based metal single-atom catalyst. USE - The catalyst is useful for an electrocatalytic process (one of electrolysis of water hydrogen production reaction, fuel cell reaction, air battery reaction or carbon dioxide reduction reaction), a photocatalytic process and a thermocatalytic process (claimed). ADVANTAGE - The method: atomizes the suspension by an atomizer and subjecting to heat treatment to achieve batch preparation of wrinkled spherical graphene single-atom catalysts with controllable size and flexibly adjusts the physical and chemical properties e.g. the wrinkle degree, specific surface area, electrochemical active area, hydrophilicity and hydrophobicity of the graphene support, as well as the single-atom electronic structure and intrinsic catalytic properties.