Graphitic carbon nitride(g-C_(3)N_(4)) with transition metal phosphides has been studied extensively as potential photocatalysts for hydrogen evolution.However,in-situ approaches to realize intimate interfacial contacts have rarely been reported.In this study,Ni_(2)P nanoparticlesdecorated g-C_(3)N_(4)photocatalysts were prepared via liquid exfoliation of g-C_(3)N_(4) followed by in-situ loading of Ni_(2)P nanoparticles in a rotating packed bed(RPB) reactor.The optimized Ni_(2)P/g-C_(3)N_(4) exhibits high performance in visible-light-driven(λ > 420 nm) hydrogen evolution(~561 μmol g-1h-1),which is 103 times higher than that of pristine g-C_(3)N_(4).The superior photocatalytic performance and durability originate from the robust interfacial structure.Therefore,a Z-scheme route with enhanced transfer of photoinduced electron was proposed,and Ni_(2)P/gC_(3)N_(4) composites with smaller bandgaps than those of g-C_(3)N_(4) were realized.Due to the intensified mass transfer and mixing of RPB reactor,the adsorption and nucleation processes of Ni_(2)P on g-C_(3)N_(4) were enhanced,enabling scalable solar light-driven H_(2) production.
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