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Langmuir

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Selective Photocatalytic Oxidation of Thioanisole on DUT-67(Zr) Mediated by Surface Coordination

Published:19 February 2020 DOI: 10.1021/acs.langmuir.9b02582 PMID: 32075375
Yanyang Liu, Junhua Zou, Binbin Guo, Yahang Ren, Zhitong Wang, Yujie Song, Yan Yu, Ling Wu*

Abstract

DUT-67(Zr) was obtained by a solvothermal route and applied to photocatalytic selective synthesis of thioanisole under light illuminating. The conversion of thioanisole is up to 95%, and the selectivity of methyl phenyl sulfoxide is 98%. The activity of DUT-67(Zr) is over 10 times higher than that of UiO-66. This great increased activity is attributed to the high percentages of oxygen vacancies on DUT-67(Zr). The ESR result shows there are more oxygen vacancies that can expose high density unsaturated Zr sites on DUT-67(Zr). The in situ FTIR reveals that unsaturated Zr sites on DUT-67(Zr) possess Lewis acidity which facilitate the adsorption of the substrates to form the coordination species, promoting the activation of thioanisole. The absorption edge of DUT-67(Zr) with coordination species red-shifts to 360 nm, which can be presented by DRS. Furthermore, the oxygen molecules can be activated by excited electrons to form ?O2?. Finally, a possible photocatalytic process of oxidating thioanisole to methyl phenyl sulfoxide based on the coordination effect between DUT-67(Zr) and thioanisole is proposed at a molecular level.

Substances (5)

Related products
Procduct Name CAS Molecular Formula Supplier Price
Thioanisole 100-68-5 C7H8S 407 suppliers $9.00-$6815.66
METHYL PHENYL SULFOXIDE 1193-82-4 C7H8OS 140 suppliers $13.00-$1255.08
Oxygen 7782-44-7 O2 98 suppliers $39.00-$6603.14
Zirconium 1,4-dicarboxybenzene MOF (UiO-66) 1072413-89-8 C48H24O32Zr6 31 suppliers $72.00-$216.00
ZR Soil Microbe DNA MiniPrep 4 suppliers Inquiry

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