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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c01935
|2 doi
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|a pubmed24n1206.xml
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|a (DE-627)NLM361954565
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|a (NLM)37698060
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|a DE-627
|b ger
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|e rakwb
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|a eng
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|a Yan, Zheng
|e verfasserin
|4 aut
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|a Green Synthesis Strategy of Template-Free S-Doped g-C3N4 with Cystine for Efficient Photocatalytic Degradation of RhB
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 26.09.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Constructing a nanostructure with a high surface area and regulating the band gap by nonmetallic doping are two effective methods for improving the photocatalytic activity of catalysts. A green template-free synthesis strategy of S-doped g-C3N4 nanosheets is proposed via doping cystine as both the structural additive and S source. The features of S-doped samples (GCN-x%) were systematically studied, including morphology and textural and photoelectric properties, which demonstrated that the introduction of cystine and simple manipulation of the preparation process could realize self-exfoliation of g-C3N4 into nanosheets. The GCN-3% sample showed a surface area (131.88 m2·g-1) 10.7 times enlarged compared with bulk g-C3N4 (bulk-phase carbon nitride). Obvious redshift on the absorption edge induced by S doping can be observed, revealing a narrowed band gap and enhanced efficiency of photogenerated charge carrier separation. The DFT calculation results also verified that the introduced C-S site could lead to polarization of the local electric field and thus decrease the bandgap of g-C3N4 nanosheets. GCN-3% showed a 99.3% photocatalytic degradation ratio of rhodamine B in 60 min at a rate of 0.17 min-1. By scavengers experiment revealed that superoxide anion (·O2-) radicals and holes (h+) were vital active components during the photocatalytic degradation
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|a Journal Article
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|a Liu, Yang
|e verfasserin
|4 aut
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|a Zhang, Leixin
|e verfasserin
|4 aut
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|a Luan, Jingde
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ke, Xin
|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 39(2023), 38 vom: 26. Sept., Seite 13705-13716
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:39
|g year:2023
|g number:38
|g day:26
|g month:09
|g pages:13705-13716
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|u http://dx.doi.org/10.1021/acs.langmuir.3c01935
|3 Volltext
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