Photocatalytic Hydrogen Evolution Coupled with Production of Highly Value‐Added Organic Chemicals by a Composite Photocatalyst CdIn₂S₄@MIL‐53‐SO₃Ni_1/2

Abstract

Photocatalytic water splitting coupled with the production of highly value-added organic chemicals is of significant importance, which represents a very promising pathway for transforming green solar energy into chemical energy. Herein, we report a composite photocatalyst CdIn 2 S 4 @MIL-53-SO 3 Ni 1/2 , which is highly efficient on prompting water splitting for the production of H 2 in the reduction half-reaction and selective oxidation of organic molecules for the production of highly value-added organic chemicals in the oxidation half-reaction under visible light irradiation. The superior photocatalytic properties of the composite photocatalyst CdIn 2 S 4 @MIL-53-SO 3 Ni 1/2 should be ascribed to coating suspended ion catalyst (SIC), consisting of redox-active Ni II ions in the anionic pores of coordination network MIL-53-SO 3 À , on the surface of photoactive CdIn 2 S 4 , which endows photogenerated electron-hole pairs separate more efficiently for high rate production of H 2 and selective production of highly value-added organic products, demonstrating great potential for practical applications.

Fabrication of Noble-Metal-Free Mo2C/CdIn2S4 Heterojunction Composites with Elevated Carrier Separation for Photocatalytic Hydrogen Production

“…To date, numerous semiconductors—including sulfides, metal oxides, and nitrides—have been extensively exploited for photocatalytic H 2 production [ 9 , 10 , 11 ]. Among the developed photocatalysts, CdIn 2 S 4 (CIS) is of great interest [ 12 , 13 , 14 ]. Nevertheless, for bare CIS, the low carrier separation efficiency and lack of active site still need to be urgently solved.…”

Construction of donor-mediator-receptor heterojunctions: Ni12P5/In(OH)3/CdIn2S4 ternary catalyst for photocatalytic hydrogen production

“…However, similar to other one-component catalysts, CdIn 2 S 4 has serious problems on recombination of photogenerated electrons and holes. 32–45 Enhancing the separation efficiency of the photogenerated electrons and holes is the key to improve the efficiency of hydrogen production by photocatalytic water splitting. In recent years, photocatalysts combined with co-catalysts are considered to be the most promising technology to promote the separation of the photogenerated electrons and holes and surface reaction kinetics.…”