Mesoporous Nitrogen‐Doped Carbon‐Nanosphere‐Supported Isolated Single‐Atom Pd Catalyst for Highly Efficient Semihydrogenation of Acetylene

) and remarkably thin pore wall (1-2 nm) exhibits higher activity than that of its nonmesoporous counterpart (ISA-Pd/non-MPNC) catalyst by a factor of 4. This work presents an efficient way to tailor and optimize the catalytic activity and selectivity by atomic-scale design and structural control.