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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c03216
|2 doi
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|a pubmed24n1070.xml
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|a eng
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| 100 |
1 |
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|a Chen, Zhe
|e verfasserin
|4 aut
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|a Confined Generation of Homogeneously Dispersed Au and SnO2 Nanoparticles in Layered Silicate as Synergistic Catalysts
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|c 2021
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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 23.02.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a With the aid of the confined conversion of layered silicate RUB-15, homogeneously dispersed Au and SnO2 nanoparticles (NPs) were generated in the confined layer space of RUB-15. The Au-SnO2/SiO2 composite was obtained with the structure that ultrafine Au and SnO2 NPs were supported on SiO2 lamellas. Benefited by the Sn(II)-assisted in situ reduction strategy, Au NPs were highly uniformed and evenly distributed in/on the RUB-15. This Au-SnO2/SiO2 composite was employed as a catalyst to the reduction of 4-nitrophenol showing excellent catalytic activity. The catalytic rate constant at room temperature was calculated to be 6.64 min-1, which was dramatically higher than that of Au/SiO2 composite produced by reduction with hydrazine hydrate on the same support of layered silicate RUB-15. The interaction between Au and SnO2 NPs increased the electron density around Au NPs, which was demonstrated to be an essential factor to the excellent catalytic activity of the Au-SnO2/SiO2 composite. The simple and universal synthesis method afforded precise control over the size/spatial arrangement of Au and SnO2 NPs on SiO2 lamellas. The high activity of the Au-SnO2/SiO2 composite demonstrated that the strategy used in this study has good potential application prospect. Furthermore, this work provided new perspective on the catalysis mechanism to the metal/semiconductor synergistic catalyst system
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|a Journal Article
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|a Huang, Qiang
|e verfasserin
|4 aut
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|a Zhang, Yifei
|e verfasserin
|4 aut
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|a Sheng, Peng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cui, Zhimin
|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), 7 vom: 23. Feb., Seite 2341-2348
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:37
|g year:2021
|g number:7
|g day:23
|g month:02
|g pages:2341-2348
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|u http://dx.doi.org/10.1021/acs.langmuir.0c03216
|3 Volltext
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