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- W2940184349 abstract "It is challenging to develop highly efficient, multifunctional and low-cost cocatalysts to accelerate transfer, separation and utilization of charge carriers for fundamentally boosting photocatalytic H2 evolution. So far, the famous metallic MPx (M = Fe, Co or Ni) H2-evolution cocatalyst have never been used as interface electron transfer channels between semiconductors and cocatalysts. Herein, we, for the first time, demonstrated that metal phosphide (MP) cocatalyts could be used as an interface electronic bridge to greatly enhance the photocatalytic H2 evolution over 2D/2D g-C3N4/MoS2 layered heterojunctions. The results clearly prove that Ni2P could serve as much better interface electron transfer channel than CoP and Fe2P. The highest hydrogen production rate of ternary g-C3N4-1%Ni2P-1.5%MoS2 could reach 532.41 μmolg−1h−1, which was 2.47 and 5.15 times than those of g-C3N4-1.5%MoS2 and g-C3N4-1%Ni2P, respectively. More importantly, the bi-functional roles of MP cocatalyts in boosting photocatalytic H2 evolution were also carefully revealed. Apparently, the metallic MP cocatalyts could not only serve as normal cocatalysts to boost the H2-evolution kinetics through decreasing the overpotential, but also can act as excellent interface electron transfer channels to achieve efficient transfer of more electrons from g-C3N4 to the surface active sites of MoS2, thus synergistically leading to the significantly boosted H2 evolution. This work would open up opportunities to develop high-efficiency and low-cost photocatalytic system using the rationally designed metallic earth-abundant cocatalysts as the interface electron bridge." @default.
- W2940184349 created "2019-04-25" @default.
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- W2940184349 date "2019-09-01" @default.
- W2940184349 modified "2023-10-16" @default.
- W2940184349 title "Engineering MPx (M = Fe, Co or Ni) interface electron transfer channels for boosting photocatalytic H2 evolution over g-C3N4/MoS2 layered heterojunctions" @default.
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- W2940184349 doi "https://doi.org/10.1016/j.apcatb.2019.04.012" @default.
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