Deep eutectic solvothermal NiS2/CdS synthesis for the visible-light-driven valorization of the biomass intermediate 5-hydroxymethylfurfural (HMF) integrated with H2 production. Issue 7 (16th January 2023)

• Record Type: Journal Article
• Authors: Liu, Shuzi; Zhang, Baolong; Yang, Zhaohui; Xue, Zhimin; Mu, Tiancheng
• Is Part Of: Green chemistry. Volume 25:Issue 7(2023)
• Page Start: 2620
• Page End: 2628
• Publication Date: 2023-01-16
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d2gc04535d
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : NiS2 /CdS photocatalyst produced from deep eutectic solvothermal technique is efficient for visible-light-driven dehydrogenation of 5-hydroxymethylfurfural into H2 and 2, 5-diformylfuran at rates of up to 519.64 and 476.60 μmol g −1 h −1, respectively. Abstract : Visible-light-driven transformation of biomass to high-valued chemicals is attractive for achieving a low-carbon environment. The solar-catalyzed oxidation of 5-hydroxymethylfurfural (HMF) to 2, 5-diformylfuran (DFF) has great industrial potential because DFF is a pivotal precursor in industries. Here, we present a one-step deep eutectic solvothermal technique for the production of NiS2 /CdS nanospheres. Because NiS2 can act as a cocatalyst enhancing the transfer and separation of photogenerated carriers, the prepared NiS2 /CdS exhibits efficient visible-light-driven dehydrogenation of HMF to H2 and DFF. DFF and H2 can be produced at rates of up to 519.64 and 476.60 μmol g −1 h −1, respectively, which are about 10.03 and 9.81 times higher than those of bare CdS under visible light irradiation. Moreover, the photocatalytic process was carried out at ambient temperature and pressure in water without using a sacrificial agent. Both h + and e − are involved in the process of photocatalytic reaction, and the valence band position of the NiS2 /CdS photocatalyst is essential for the high DFF selectivity (95.2%). This work paves a sustainable way to realize the photocatalytic valorization of biomass.