▎ 摘　　要

NOVELTY - Cerium-zirconium-potassium/reduced graphene oxide nano solid solution comprises cerium-zirconium-potassium/reduced graphene oxide compound (I). USE - As cerium-zirconium-potassium/reduced graphene oxide nano solid solution. ADVANTAGE - The cerium-zirconium-potassium/reduced graphene oxide nano solid solution has lower reaction temperature in catalytic soot oxidation reaction, high catalytic activity and lower cost. DETAILED DESCRIPTION - Cerium-zirconium-potassium/reduced graphene oxide nano solid solution comprises cerium-zirconium-potassium/reduced graphene oxide compound of formula (I): CeaZrbKc/rGO. a:b:c = 5:(1-3):(1-3).