In situ fabrication Ti3C2Fx MXene/CdIn2S4 Schottky junction for photocatalytic oxidation of HMF to DFF under visible light

Photocatalytic selective oxidation of biomass-derived 5-hydroxymethylfurfural to 2,5-diformylfuran under ambient conditions over CdIn2S4/g-C3N4 heterojunctions

“…Based on the above analysis and elaboration, the successful preparation of the CIS/CNNS composite photocatalyst is confirmed, and when the two semiconductors are compounded, C and N in the 15% CIS/CNNS composite show different degrees of positive migration, while Cd and In show significant negative migration; the presence of significant migration proves that there is a benign electron transfer from CNNS to CIS between the two. 19…”

“…The CB for CIS is calculated to be −0.493 eV, the VB potential is calculated to be 1.407 V, and the CB for CNNS is estimated to be −1.006 V (based on the forbidden bandwidths obtained in the previous UV-vis plot analysis). 19 The VB potential is calculated to be 1.354 V ( vs. NHE). Interestingly, the CB positions calculated for pure CNNS (−1.01 eV) and CIS (−0.48 eV) using the above equation agree with that derived from Fig.…”

Photocatalytic upgrading of 5-hydroxymethylfurfural – aerobic or anaerobic?

“…To provide more charge carriers for an improved DFF yield, the authors developed an interfacial contact Schottky junction between MXene and CdIn 2 S 4 by selective etching Ti 3 AlC 2 precursor and in situ growth of CdIn 2 S 4 . 55 The intimate surface contact promotes charge transfer from CdIn 2 S 4 to MXene, while the Schottky junction inhibits electron backflow in the heterojunction structure. As a result, they achieved a conversion rate of 69% and a DFF yield of 72% following an enhanced ROS-driven oxidation mechanism.…”

Band Structure Engineering of Polyimide Photocatalyst for Efficient and Selective Oxidation of Biomass‐Derived 5‐Hydroxymethylfurfural

“…[4][5][6][7][8][9][10] Containing aldehyde and alcohol functional groups, HMF can be further converted into multiple high-value fuels and chemicals including levulinic acid, [11] 2, 5-dimethylfuran, [12] and 2, 5-diformylfuran (DFF). [13][14][15] Partial oxidation of HMF to highvalue chemicals such as DFF has attracted considerable attention because the target product has an extensive application prospect as furan-based biopolymers monomers, pharmaceutical intermediates, and antifungal agents. [16,17] The conventional thermal catalytic process of HMF to DFF has been achieved on various homogeneous Mn/Co salts, [18] transition metal oxides, [19] and carbon supported by Au, Pt, Pd, and Ru.…”