Reduced graphene oxide-modified Z-scheme g-C₃N₄/CdS photocatalyst with a staggered structure for the enhanced photoreduction of CO₂

Abstract

The Z-scheme g-C3N4/CdS@rGO photocatalyst with a staggered structure which enhances the photoreduction of CO2 under UV-Vis light irradiation. Transmission electron microscope (TEM) image shows that g-C3N4/CdS@rGO has unique lamellar staggered...

Ag as an Electron Mediator in Porous Cu2O Nanostructures for Photocatalytic CO2 Reduction to CO

“…), 16,23 covalent organic framework materials (COF), 19,22 carbon nanomaterials (rGO, C 3 N 4 , etc. ), 17,23 MXenes, and single metal atomic catalysts (SACs) 17,20,24 have been extensively studied in the field of photocatalytic CO 2 reduction, and the reduction yield has been continuously improved. Among the well known semiconductor, p-type cuprous oxide (Cu 2 O) with a band gap of 2.0 eV not only demonstrates a large theoretical photocurrent density of 14.7 mA cm −225−28 but also has a more negative conduction band (CB) for reducing CO 2 to various hydrocarbons.…”

“…), ,, metal sulfides (CdS, etc. ), , covalent organic framework materials (COF), , carbon nanomaterials (rGO, C 3 N 4 , etc. ), , MXenes, and single metal atomic catalysts (SACs) ,, have been extensively studied in the field of photocatalytic CO 2 reduction, and the reduction yield has been continuously improved.…”

In situ construction of a 2D CoTiO3/g-C3N4 photocatalyst with an S-scheme heterojunction and its excellent performance for CO2 reduction

“…[24][25][26] Graphitic carbon nitride (g-C 3 N 4 ) has been widely investigated as a photocatalyst in the elds of hydrogen production from water decomposition, pollutant degradation and CO 2 reduction due to its suitable electronic energy band structure, stability, narrow forbidden bandwidth (z2.92 eV) and excellent photocatalytic properties. [27][28][29] Specically, as a typical two-dimensional (2D) semiconductor material, g-C 3 N 4 could exhibit excellent photocatalytic properties. 2D materials not only have geometrical characteristics such as a large surface size and small thickness, but also have unique physicochemical properties that are advantageous for light absorption, carrier separation, and reaction sites, which can effectively shorten the diffusion distance of electron-hole pairs and improve the efficiency of interfacial charge transfer.…”

Fabricating carbon nitride-based 3D/0D intramolecular donor–acceptor catalysts for efficient photoreduction of CO2

“…[15][16][17][18] Organic polymer carbon nitride (g-CN) is attracting increasing attention since Wang et al found its application in photocatalysis hydrogen evolution. 19,20 In the past few years, g-CN has been widely studied in the field of photocatalysis CO 2 reduction due to its suitable band gap for visible light absorption, strong redox ability, low costs, and ecofriendly properties. [21][22][23] However, because of the limitation of finite specific surface area, high electron-hole recombination rate, narrow light response region, and limited mass transfer efficiency, g-CN itself showed low CO 2 reduction activity.…”