All-in-one ultrathin nanoporous ZnIn₂S₄ with ameliorated photoredox capability: harvesting electron–hole pairs in cooperative hydrogen and benzaldehyde production

Abstract

All-in-one ultrathin porous ZnIn2S4 toward photocatalytic water reduction and benzyl alcohol oxidation for the co-production of hydrogen fuels and value-added benzaldehyde.

Hierarchical (CdZnCuCoFe)S1.25/ZnIn2S4 Heterojunction for Photocatalytic CO2 Reduction: Insights into S-Scheme Charge Transfer Pathways in Type-I Band Alignment

“…The presence of Zn, In, S, Cd, Cu, Co, and Fe effectively confirms the successful construction of the HES/ZIS-10 heterojunction, consistent with the results of EDS mapping. 31,32 33,34 For In 3d, the peaks at 452.18 and 444.68 eV are ascribed to In 3d 3/2 and In 3d 5/2 for ZIS, respectively, while the binding energies of In 3d for HES/ZIS-10 shift 0.1 eV to higher binding energies. 35,36 Similarly, the S 2p of ZIS is decomposed into two separated peaks at 162.68 and 161.48 eV, which are indexed to S 2p 1/2 and S 2p 3/2 , respectively.…”

Construction of a Dual-Function Mo-ZIS@Ti for Photocatalytic Benzyl Alcohol Oxidation and Hydrogen Evolution Performance

“…53 In addition, as depicted in Figure S9a, when DMPO was employed to capture the • OH radicals in the aqueous solution, no obvious signal was observed after 10 min light irradiation, further proving that • OH radicals do not constitute the primary active species involved in this system. 54 However, as can be seen in Figure S9b, a distinct signal was observed after 10 min of light exposure when DMPO was employed to trap • O 2− radicals in an aqueous solution. This phenomenon arises due to the incomplete removal of • O 2− from water, which is consistent with the outcomes obtained from free radical scavenger experiments.…”

“…Nevertheless, it is evident from Figure b that the peak concentration of h + exhibited a significant decrease after 10 min under visible light irradiation, indicating the generation of h + during the reaction process . In addition, as depicted in Figure S9a, when DMPO was employed to capture the • OH radicals in the aqueous solution, no obvious signal was observed after 10 min light irradiation, further proving that • OH radicals do not constitute the primary active species involved in this system . However, as can be seen in Figure S9b, a distinct signal was observed after 10 min of light exposure when DMPO was employed to trap • O 2– radicals in an aqueous solution.…”

Synergistic redox reactions toward co‐production of H2O2 and value‐added chemicals: Dual‐functional photocatalysis to achieving sustainability

“…However, the relatively higher position of S 3p orbital compared to O 2p orbital grants TMS with comparably weaker oxidation power, hence rendering a typical TMS to have strong reduction and mild oxidation power, along with narrower bandgap. The lineage of reported TMS photocatalysts includes single‐metal sulfides (e.g., CdS, MoS 2 ) and dual‐metal sulfides (e.g., Zn 3 ln 2 S 6 , Zn x Cd 1– x S) 37,131,133–135 . Hitherto, in the perspective of cooperative coupling of H 2 O 2 with H 2 or selective chemical synthesis, CdS has caught the eyes of researchers due to its visible‐light responsiveness ( E g ≈ 2.4 eV), negative CB edge position, and efficacious photogeneration of electron–hole pairs 36 .…”