▎ 摘　　要

NOVELTY - A graphene-based supported noble metal catalyst comprises carrier comprising sheet-like hydrotalcite uniformly grown in reduced graphene oxide surface, and active component comprising noble metal particles highly dispersed in carrier surface. The noble metal particles have size of 1-5 nm. USE - Graphene-based supported noble metal catalyst. ADVANTAGE - The catalyst has strong interaction between carrier and active component. DETAILED DESCRIPTION - A graphene-based supported noble metal catalyst of formula Z/MA1-LDH/RGO comprises MA1-LDH/RGO carrier comprising sheet-like hydrotalcite uniformly grown in reduced graphene oxide surface, and active component comprising noble metal particles highly dispersed in carrier surface. The noble metal particles have size of 1-5 nm. Z=Au, Pd, or Ru; LDH=hydrotalcite; M=Ni2+, Mg2+, or Co2+; and RGO=reduced graphene oxide. An INDEPENDENT CLAIM is included for preparation of graphene-based supported noble metal catalyst by: (A) dissolving soluble noble metal precursor in deionized water (DI) to prepare 0.3-1 mmol/L noble metal solution; (B) dissolving soluble metal nitrate and 0.032-0.16 mol/L aluminum nitrate in DI water to prepare metal salt solution; (C) adding hexamethylenetetramine to metal salt solution, maintaining at 0-10 degrees C while stirring, adding noble metal solution, and uniformly stirring to obtain mixed solution; and (D) adding graphene oxide to the mixed solution, crystallizing at 60-150 degrees C for 12-24 hours, discharging, washing with DI water until pH is 7-8, and drying at 40-60 degrees C for 6-12 hours. The molar ratio of metal nitrate and aluminum nitrate in step (B) is 2-3:1. The molar ratio of aluminum ion and hexamethylenetetramine in step (C) is 0.3-1:6. The molar ratio of noble metal and divalent metal cation in step (C) is 0.75-1:100. The weight ratio of metal nitrate and graphene oxide in step (D) is 0.9-3.8:1.