Photoelectrocatalytic properties and mechanism of rhodamine B degradation using a graphene oxide/Ag₃PO₄/Ni film electrode

Abstract

GO/Ag3PO4/Ni thin film electrodes prepared by composite electrodeposition show excellent photoelectrocatalytic performance and a photoelectric synergistic effect.

Two-Dimensional Layered Heterojunctions for Photoelectrocatalysis

“…76 RGO is generally synthesized by exfoliating graphite power via Hummers' method. Then other components will crystallize on the surface of rGO, such as Cu nanoparticles by electrochemical reduction process, 87 Ag 3 PO 4 by electrodeposition, 18 and Pt/CdS combination by the hydrothermal method. 88 Graphene can be fabricated via CVD in which methane is used as the carbon source, and other components are deposited on the surface of graphene through different methods.…”

“…(b) Room-temperature PL spectra of Ag 3 PO 4 /Ni and GO/Ag 3 PO 4 /Ni thin films. Reprinted with permission from ref . Copyright 2020 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.…”

“…The most well-known 2D materials for PEC include graphene, graphitic carbon nitride (g-C 3 N 4 ), metal chalcogenides (MCs), layered double hydroxides (LDHs), MXenes, bismuth oxyhalides (BiOX, X = Cl, Br or I), hexagonal boron nitride (h-BN), Pd 3 (PS 4 ) 2 , transition metal oxides, 2D metal organic frameworks (MOFs), Xenes, metal phosphorus trichalcogenides (MPCh 3 ), and other materials with a 2D structure on the atomic level (Figure ). − 2D materials have been extensively studied in PEC, where they serve various roles, including functioning as photoelectrocatalysts, cocatalysts for bandgap tuning, CT mediators, or supporting matrices for catalysts. − Usually, 2D materials are mainly selected for PEC due to the following properties: Large surface area. As a catalyst, a high surface area of all the 2D materials has the possibility to increase the density of active sites (surface defects, unsaturated atoms, and/or active edges, etc.)…”

Advanced Two-Dimensional Materials for Green Hydrogen Generation: Strategies toward Corrosion Resistance Seawater Electrolysis─Review and Future Perspectives

“…The efficient electrolysis process is defined by the narrow band gap of the photoelectrocatalyst and high electronic charge mobility. , The catalysts should possess a band gap of 1.23–3.0 eV in the visible light spectrum for efficient hydrogen production. Thus, appropriate band gaps and suitable positings of the conduction band (CB) and valence band (VB) are necessary to meet the oxidation and reduction potential energy requirements for the water electrolysis process. , Therefore, a photoelectrocatalyst with an appropriate bandgap and band alignment is necessary for water electrolysis. , A photocatalyst with low cost and high efficiency can help in the light harvesting and facile charge transfer process during the photocatalytic process . Hydrogen production in a photoelectrochemical (PEC) cell shown in Figure explains the phenomena of photocatalytic activity for hydrogen and oxygen evolutions from water by using solar light illumination.…”

“…Thus, appropriate band gaps and suitable positings of the conduction band (CB) and valence band (VB) are necessary to meet the oxidation and reduction potential energy requirements for the water electrolysis process. 253,254 Therefore, a photoelectrocatalyst with an appropriate bandgap and band alignment is necessary for water electrolysis. 55,255 A photocatalyst with low cost and high efficiency can help in the light harvesting and facile charge transfer process during the photocatalytic process.…”