Sub-5 nm Ultra-Fine FeP Nanodots as Efficient Co-Catalysts Modified Porous g-C3N4 for Precious-Metal-Free Photocatalytic Hydrogen Evolution under Visible Light
| العنوان: | Sub-5 nm Ultra-Fine FeP Nanodots as Efficient Co-Catalysts Modified Porous g-C3N4 for Precious-Metal-Free Photocatalytic Hydrogen Evolution under Visible Light |
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| المؤلفون: | Ting Zhou, Deqian Zeng, Dong-Liang Peng, Yi-An Zhu, Wee-Jun Ong, Wanjie Xu, Yuanzhi Chen, Mingda Wu, Xiaoguang Duan |
| المصدر: | ACS Applied Materials & Interfaces. 11:5651-5660 |
| بيانات النشر: | American Chemical Society (ACS), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Photoluminescence, Nanocomposite, Materials science, Graphitic carbon nitride, Quantum yield, Heterojunction, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, Iron phosphide, chemistry, Chemical engineering, Photocatalysis, General Materials Science, Nanodot, 0210 nano-technology |
| الوصف: | Sub-5 nm ultra-fine iron phosphide (FeP) nano-dots-modified porous graphitic carbon nitride (g-C3N4) heterojunction nanostructures are successfully prepared through the gas-phase phosphorization of Fe3O4/g-C3N4 nanocomposites. The incorporation of zero-dimensional (0D) ultra-small FeP nanodots co-catalysts not only effectively facilitate charge separation but also serve as reaction active sites for hydrogen (H2) evolution. Herein, the strongly coupled FeP/g-C3N4 hybrid systems are employed as precious-metal-free photocatalysts for H2 production under visible-light irradiation. The optimized FeP/g-C3N4 sample displays a maximum H2 evolution rate of 177.9 μmol h-1 g-1 with the apparent quantum yield of 1.57% at 420 nm. Furthermore, the mechanism of photocatalytic H2 evolution using 0D/2D FeP/g-C3N4 heterojunction interfaces is systematically corroborated by steady-state photoluminescence (PL), time-resolved PL spectroscopy, and photoelectrochemical results. Additionally, an increased donor density in FeP/g-C3N4 is evidenced from the Mott-Schottky analysis in comparison with that of parent g-C3N4, signifying the enhancement of electrical conductivity and charge transport owing to the emerging role of FeP. The density functional theory calculations reveal that the FeP/g-C3N4 hybrids could act as a promising catalyst for the H2 evolution reaction. Overall, this work not only paves a new path in the engineering of monodispersed FeP-decorated g-C3N4 0D/2D robust nanoarchitectures but also elucidates potential insights for the utilization of noble-metal-free FeP nanodots as remarkable co-catalysts for superior photocatalytic H2 evolution. |
| تدمد: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b20958 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::87285408cf6764cbee9a46e88194f04c https://doi.org/10.1021/acsami.8b20958 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........87285408cf6764cbee9a46e88194f04c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19448252 19448244 |
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| DOI: | 10.1021/acsami.8b20958 |