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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c02458
|2 doi
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|a pubmed24n1227.xml
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|a eng
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|a Yang, Wei
|e verfasserin
|4 aut
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|a Enhanced Photocatalytic Activity of π-Conjugated Pyridine Rings-Modified C3N4/BiBiOCl Z-Scheme Heterogeneous Material
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|c 2023
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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 08.12.2023
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a The enhanced photocatalytic properties of Z-Scheme BiBiOCl/C3N4-DPY heterojunction materials were successfully prepared by the ultrasonic-assisted coprecipitation method. The Bi@BiOCl/C3N4-DPY heterojunction exhibited remarkable photocatalytic activity under visible light irradiation, and the degradation rate of methyl orange (MO) was about 90.6% in 180 min. This impressive efficiency is mainly due to the Z-Scheme charge transfer mechanism in Bi@BiOCl/C3N4-DPY, resulting in the efficient separation of charge carriers and an increase in the REDOX potential of photogenerated electrons and holes. C3N4 was modified with a π-deficient conjugated pyridine ring, which caused the light absorption redshift, promoted the formation of oxidizing •O2-, and improved the photocatalytic activity. At the same time, a well-aligned heterojunction is formed at the interface between C3N4-DPY and BiOCl, facilitating the seamless transfer of light-induced electrons from the LUMO of C3N4-DPY to the CB of BiOCl. In addition, the addition of Bi introduces a unique band gap reduction effect, resulting in a change in the density of the band states, which further promotes charge transfer and separation. It is worth noting that the introduction of metallic bismuth (Bi) brings about a unique band gap reduction effect, resulting in a change in the density of states within the band, which ultimately promotes charge transfer and separation. The Z-scheme charge migration inside Bi@BiOCl/C3N4-DPY further promotes the efficient separation of photogenerated electron-hole pairs, greatly improving the overall efficiency of the material. The Z-structured photocatalyst developed in this study has great application potential in various fields of photocatalysis
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|a Journal Article
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|a Gao, Yanhua
|e verfasserin
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|a Cao, Mingli
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g (2023) vom: 08. Dez.
|w (DE-627)NLM098181009
|x 1520-5827
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|g year:2023
|g day:08
|g month:12
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|u http://dx.doi.org/10.1021/acs.langmuir.3c02458
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