“…Recently, various inexpensive transition-metal-based materials, including transition metal sulfides (TMSs), 16,17 phosphides, 18,19 nitrides, 20,21 carbides, 22,23 and hydroxides, 24–27 have been exploited as efficient catalysts. Among them, TMSs, with their distinctive structural advantages, abundant active sites and regulable electronic properties, have drawn great attention.…”