2,5-Diformylfuran production by photocatalytic selective oxidation of 5-hydroxymethylfurfural in water using MoS2/CdIn2S4 flower-like heterojunctions

• Published in: Chinese journal of chemical engineering Vol. 54; no. 2; pp. 180 - 191
• Main Authors: Zhu, Qian, Zhuang, Yan, Zhao, Hongqing, Zhan, Peng, Ren, Cong, Su, Changsheng, Ren, Wenqiang, Zhang, Jiawen, Cai, Di, Qin, Peiyong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2023; National Energy R&D Center for Biorefinery,Beijing University of Chemical Technology,Beijing 100029,China%Research Center for Eco-environmental Sciences,Chinese Academy of Science,Beijing 100085,China%Collage of Life Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China
• Subjects: 2,5-Diformylfuran (DFF); MoS2/CdIn2S4 (MC); Photocatalysis; Selective oxidation; Visible light irradiation; Selective oxidation; Visible light irradiation; MoS2/CdIn2S4 (MC); 2,5-Diformylfuran (DFF); Photocatalysis; MoS2/CdIn2S4(MC); 2,5-Diformylfuran(DFF)
• ISSN: 1004-9541; 2210-321X
• DOI: 10.1016/j.cjche.2022.04.018

[Display omitted] The selective oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-diformylfuran (DFF) is an important reaction for renewable biomass building blocks. Compared with thermal catalytic processes, photocatalytic production of DFF from HMF has attracted tremendous attention. Herein, the MoS2/CdIn2S4 (MC) flower-like heterojunctions were prepared and considered as photocatalysts for selective oxidation of HMF into DFF under visible-light irradiation in aqueous solution. Results demonstrated MoS2 in MC heterojunction could promote the separation of photoexcited electron-hole pairs, while the amount of MoS2 dropping was proved influenced on the photocatalytic performance. 80.93% of DFF selectivity was realized when using 12.5% MC as photocatalyst. In addition, the MC catalyst also showed great potential in transformation of other biomass derived benzyl- and furyl-alcohols. The catalytic mechanism suggested that ·O2- was the decisive active radical for HMF oxidation. Therefore, the MC heterojunction could be applied in photocatalytic conversion of biomass to valuable chemicals under ambient condition.