Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 6, Issue 1, Pages 816-826Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.7b03169
Keywords
Photocatalytic hydrogen evolution; Noble metal-free Co2P cocatalysts; g-C3N4 Nanosheet; Solar fuel; Environmental phosphorylation strategy
Categories
Funding
- National Natural Science Foundation of China [51672089]
- Science and Technology Planning Project of Guangdong Province [2015B020215011]
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing (Wuhan University of Technology) [2015-KF-7]
- U.S. National Science Foundation [DMR-1609061]
- College of Arts and Sciences, University of Missouri Kansas City
- University of Missouri Research Board
- Direct For Mathematical & Physical Scien [1609061] Funding Source: National Science Foundation
Ask authors/readers for more resources
Highly active and durable earth-abundant cocatalysts and photocatalysts are under increasing demand in developing practical hydrogen-evolution reaction (HER) systems. Especially, exploiting noble-metal-free Pt-like HER cocatalysts still remains a significant challenge. In this study, the synergistic effect of metal-organic framework (MOF) derived earth-abundant Co2P cocatalysts and the robust bioinspired environmental phosphorylation strategy in boosting photocatalyic H-2 generation overithe graphitic carbon nitride (g-C3N4) nanosheets was thoroughly investigated and revealed. The maximum H-2-evolution rate of the ternary g-C3N4-Co2P-K2HPO4 photocatalytic systems could reach 27.81 innol h(-1), which was approximately 556 times higher than that of pure g-C3N4 nanosheets. The loaded earth abundant Co2P nanoparticles with a good electrical conductivity could not only improve visible-light absorption and decrease the recombination of the electron-hole pairs, but also mainly serve as an efficient cocatalyst to lower the H-2-evolution overpotentials. Furthermore, K2HPO4 could generate an additional H-2-evolution pathway through proton-reduction cycle and enhance the oxidation ability of TEOA by effectively consuming the holes, thus significantly boosting photocatalytic hydrogen evolution of the binary g-C3N4-Co2P heterojunctions. It could be anticipated that this work will open a new pathway to rationally fabricate a noble metal-free, low-cost and high-activity metal phosphide cocatalyst for efficient photocatalytic hydrogen evolution over gC(3)N(4) nanosheet photocatalysts under visible-light illumination.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available