Enhanced selectivity and stability towards CO2 reduction of sub-5 nm Au NPs derived from supramolecular assembly

Au nanoparticles protected by macrocyclic cucurbit[n]uril (CB[n]) are obtained from supramolecular self-assembly. Attributed to the unique features of CB[n], CB[n]-Au catalysts present excellent catalytic performance for CO₂ electroreduction to CO.