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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c03362
|2 doi
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|a eng
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|a Liang, Rong
|e verfasserin
|4 aut
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|a P-Type Cobalt Phosphide Composites (CoP-Co2P) Decorated on Titanium Oxide for Enhanced Noble-Metal-Free Photocatalytic H2 Evolution Activity
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|c 2021
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 23.03.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Nowadays, transition-metal phosphides have been reported to function well in photocatalytic water splitting and possess great potential to substitute traditional noble-metal cocatalysts in the future. Herein, p-type cobalt phosphide (CoP-Co2P) nanomaterials were synthesized by phosphating the solvothermally prepared Co(OH)2 nanoflowers at a low temperature (300 °C). Then, we combined the phosphides with commercial TiO2 through facile mechanical mixing to fabricate a useful noble-metal-free photocatalyst. The phosphating time that had an influence on the composition of phosphides was tuned, and 3 h was an ideal condition after comparison. The cobalt phosphide-modified TiO2 at the optimal weight percentage (nominal 0.5%) exhibited the highest photocatalytic hydrogen rate of approximately 824.5 μmol g-1 h-1 under simulated sunlight irradiation, which was nearly equal to 160 times that of bare TiO2 and 1.7 times that of single CoP-modified TiO2. The CoPx/TiO2 heterojunction interfaces were studied using photoluminescence (PL), time-resolved PL, and photoelectrochemical methods, which revealed that the effective charge separation and transfer accelerated by the built-in electric field of p-n junction contributed significantly to the photocatalytic performance
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|a Journal Article
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|a Wang, Yanwen
|e verfasserin
|4 aut
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|a Qin, Chao
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Xuehua
|e verfasserin
|4 aut
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|a Ye, Zhizhen
|e verfasserin
|4 aut
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|a Zhu, Liping
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 37(2021), 11 vom: 23. März, Seite 3321-3330
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|x 1520-5827
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|g volume:37
|g year:2021
|g number:11
|g day:23
|g month:03
|g pages:3321-3330
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|u http://dx.doi.org/10.1021/acs.langmuir.0c03362
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