“…12,20 Single Pd, Ag, Ni, and Pt atoms supported on g-C 3 N 4 catalyst proved to be a strong candidate in the semihydrogenation of acetylene, phenylacetylene and 2-methyl-3butyn-2-ol, with higher selectivity and good resistance to coke formation. 4,22,36,37,237,260,356,458,564,565 In a similar study, Gu et al reported an 11-fold increase in acetylene hydrogenation due to the combination of single Cu and Ni atoms deposited on g-C 3 N 4 supports (Ni 1 Cu 2 /g-C 3 N 4 ), as…”