Strongly active and environmentally friendly WO 3 /C 3 N 4 photocatalysts for converting cyclohexane to cyclohexanone under ambient conditions.

Autor: Fu C; School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China.; Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, 710048, Shaanxi, China., Du J; School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China., Shi N; School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China., Yang L; School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China.; Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, 710048, Shaanxi, China., Che Q; ANTA (China) Co., Ltd., Dongshan Industrial Zone, Chidian Town, Jinjiang, 362212, Fujian, China., Zhang P; School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China. fengyunjian1981@126.com.; Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, 710048, Shaanxi, China. fengyunjian1981@126.com.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Aug 02; Vol. 14 (1), pp. 17947. Date of Electronic Publication: 2024 Aug 02.
DOI: 10.1038/s41598-024-68319-5
Abstrakt: C-H bond activation under mild conditions remains a great challenge in the chemical industry, while catalytic cyclohexane oxidation is inefficient and often requires organic solvents and strong oxidants. This study constructed a C 3 N 4 /WO 3 Z-type heterojunction catalyst to efficiently convert cyclohexane into cyclohexanone and cyclohexanol (KA oil) through aqueous phase oxidation by O 2 under visible light irradiation. With strong redox performance and high photogenerated carrier separation ability, the proposed composite catalyst can produce the key active species for cyclohexane oxidation in the H 2 O-O 2 system. The reaction mechanism was clarified through experiment and DFT theory calculation. Cyclohexane was converted into cyclohexyl radical under the action of ·OH, and ·O 2 - converted most products into cyclohexanone. The catalyst can be recycled under optimized process conditions while reaching a KA oil yield of 139.73 μmol g -1 h -1 and a selectivity of 93.1%.
(© 2024. The Author(s).)
Databáze: MEDLINE
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