Branch-like ZnS–DETA/CdS hierarchical heterostructures as an efficient photocatalyst for visible light CO₂ reduction

Abstract

Branch-like ZnS–DETA/CdS hierarchical heterostructures are synthesized as an efficient photocatalyst for visible light CO2 reduction in a tandem system.

Nanostructured Metal Sulfides: Classification, Modification Strategy, and Solar‐Driven CO2 Reduction Application

“…as an active catalyst for CO 2 photoreduction (Figure 6d), and the degree of cationic exchange reaction was controlled by varying the addition amount of Cd 2+ . [ 54 ] The remarkable photon absorption capacity (Figure 6g) and large specific surface area of the composite contributed to the surface catalytic reaction initiated by photoexcited electrons, affording a maximum CO yield of 33.3 µmol g −1 h −1 over the optimal CdS/ZnS‐DETA (the molar ratio of Cd 2+ and ZnS‐DETA: 0.9) in the tandem liquid system containing Co(bpy) 3 2+ and TEOA under visible light irradiation (λ ≥ 420 nm) (Figure 6f).…”

Sequential ionic layer adsorption reaction formation of LaVO4–TiO2 nanocomposites for photocatalytic water treatment

“…It is well established that a reduction in PL intensity from a semiconductor composite indicates a reduction of charge recombination. [38][39][40][41] This can be ascribed to increased charge separation across the interface between the two materials, typically leading to increased photocatalytic activity. 42 When excited at 300 nm, the unmodified P25 produced a broad emission from 350 to 550 nm.…”

Indium Phosphide Quantum Dots Integrated with Cadmium Sulfide Nanorods for Photocatalytic Carbon Dioxide Reduction

“…It has a narrow bandgap (~2.4 eV), and its conduction band edge position is more negative than the reduction potential of CO 2 . [4][5][6] However, the photoconversion efficiency of bare CdS is low due to its high charge carrier recombination rate and susceptibility to photocorrosion. [7][8][9][10] Loading the surface of CdS with another semiconductor or a cocatalyst to enhance photocatalytic activity has been a successful strategy.…”

“…[14][15][16] However, the high cost of manufacturing them on an industrial scale and the low abundance of noble metals are obstacles to the practical application and commercialization of these photocatalysts. A variety of CdS co-catalysts based on metal oxides, [17][18][19] carbon, [20,21] metal sulfide, [5,22] and ZIF [23,24] have been designed in an effort to overcome these limitations. Nevertheless, the instability of these co-catalysts during photocatalytic reactions is a major drawback.…”

“…Cadmium sulfide (CdS) is responsive to visible light, and it has attracted a great deal of attention as a semiconductor photocatalyst. It has a narrow bandgap (∼2.4 eV), and its conduction band edge position is more negative than the reduction potential of CO 2 . However, the photoconversion efficiency of bare CdS is low due to its high charge carrier recombination rate and susceptibility to photocorrosion .…”