“…13 There is a great need to design low cost, highly active, and stable multi-purpose non-noble metal catalysts, which is crucial for realizing the large-scale industrial production of aromatic amines. 14 Common non-precious metals used for the catalytic hydrogenation of aromatic nitro compounds includes Ni, 15 Co, 16 Cu, 17 and Fe. 18 In particular, the Co-based catalyst has gained much attention because of its excellent catalytic activity.…”