g-C3N4 foam/Cu2O QDs with excellent CO2 adsorption and synergistic catalytic effect for photocatalytic CO2 reduction

Ni–Co Bimetallic Hydroxide Nanosheet Arrays Anchored on Graphene for Adsorption‐Induced Enhanced Photocatalytic CO2 Reduction

“…Improving the CO 2 adsorption capacity of photocatalytic materials can enhance the photocatalytic performance. [17] For example, Huang et al [18] focused on material structure and designed g-C 3 N 4 foam with a hierarchical microporous structure to enhance CO 2 adsorption capacity and mass-transfer performance, thereby greatly improving the photocatalytic performance. In addition, transition metal hydroxides are generally basic, and thus the adsorption of hydroxyl groups and CO 2 molecules on the material surface is fast and effective, which is conducive to the photocatalytic reduction of CO 2 .…”

Halide Perovskite Nanocrystal Photocatalysts for CO2 Reduction: Successes and Challenges

“…After the pioneering discovery by Honda and Fujishima, Bard et al first designed a photocatalytic particle suspension system for splitting of water . Ever since the first report of CO 2 reduction in 1979, several extensive research efforts have been carried out on selection of suitable photocatalysts, which convert solar light to charge carriers (electrons and holes) and are employed for oxidation and reduction reactions. − There are many semiconducting materials, e.g., TiO 2 , − Cu 2 O, − CdS, , C 3 N 4 , ,− and perovskite oxides, − that have been reported for solar-driven photocatalytic CO 2 reduction. In the present scenario, halide perovskite nanocrystals (NCs) are considered as one of the most promising photocatalysts for reduction of CO 2 because of the high light-harvesting activities, − large charge carrier motility, , and compositional flexibility − which allow tuning of the band position as well as band gap for absorbing a wide spectrum of solar light.…”

Recent Progress in Quantum Dots Modified g‐C3N4‐based Composite Photocatalysts

“…Moreover, g-C 3 N 4 with porous structure can not only provide excellent carriers for QDs, but promote the light adsorption and CO 2 transfer ability. In 2019, Sun et al [43] prepared three-dimensional g-C 3 N 4 foam with micron porous structure by using ultra-stable foam as a soft template, and Cu 2 O QDs was loaded onto g-C 3 N 4 foam by the photodeposition method (Figure 8a-c). [43] The introduction of Cu 2 O QDs could prolong the optical absorption range of g-C 3 N 4 and form a single heterojunction structure.…”

“…In 2019, Sun et al [43] prepared three-dimensional g-C 3 N 4 foam with micron porous structure by using ultra-stable foam as a soft template, and Cu 2 O QDs was loaded onto g-C 3 N 4 foam by the photodeposition method (Figure 8a-c). [43] The introduction of Cu 2 O QDs could prolong the optical absorption range of g-C 3 N 4 and form a single heterojunction structure. Due to the threedimensional structure of g-C 3 N 4 , a quantity of CO 2 molecules was captured in the pores, thus improved the adsorption capacity, besides that, the suitable pores could stimulate the transfer of CO 2 molecules to enhance the adsorption efficiency.…”

“…Moreover, the photocatalytic activity of g-C 3 N 4 foam/Cu 2 O QDs with a reasonable design was 3.9-fold and 11-fold as high as that of g-C 3 N 4 foam and bulk g-C 3 N 4 powder, respectively (Figure 8de). [43] The possible mechanism of photocatalytic is shown in Figure 8f. Metal-organic frameworks (MOFs) are made up of inorganic metal ions (or clusters) and organic bridging ligands, which have large surface area, high porosity, good CO 2 trapping ability, flexible structural composition and functional properties.…”