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Zeolitic Imidazolate Framework-67-Derived CoP/Co@N,P-Doped Carbon Nanoparticle Composites with Graphitic Carbon Nitride for Enhanced Photocatalytic Production of H2 and H2O2
journal contribution
posted on 2020-03-26, 19:33 authored by Qingjie Ji, Longhai Pan, Jixiang Xu, Chao Wang, Lei WangThe
construction of multicomponent cocatalysts to promote charge
transfer and separation is a promising strategy for enhancing the
photocatalytic reduction reaction activity. Herein, zeolitic imidazolate
framework-67-derived CoP/Co nanoparticles enveloped by N,P-doped C
(CoP/Co@NPC) were prepared via an annealing–phosphidation approach
and employed as multicomponent cocatalysts to promote the H2 and H2O2 production performance of g-C3N4. The photocatalyst with optimal composition
(i.e., CoP/Co@NPC-15/g-C3N4) showed the highest
H2 and H2O2 production performance
with rates of 3.74 and 9.40 μmol h–1, respectively,
which were about 2.3 and 5.6 times larger than that of unphosphated
Co@N-doped C-decorated g-C3N4 (Co@NC/g-C3N4). Such an improvement originated from the efficient
separation of electron–hole pairs and enhanced the surface
catalytic activity after suitable phosphidation of Co@NC nanoparticles.
Our work showed that metal–organic framework-derived metal
phosphide/metal nanoparticle composites proved to be promising cocatalysts
to boost photocatalytic H2 and H2O2 production.