Graphitic carbon nitride (g–C3N4)–based metal-free photocatalysts for water splitting: A review

Study the influence of silver and cobalt on the photocatalytic activity of copper oxide nanoparticles for the degradation of methyl orange and real wastewater dyes

“…The strategy of the process mainly depends on the movement of electrons from the valence band (VB) to the conduction band (CB) on a surface of the semiconductor metal oxide nanoparticles by illumination with a suitable wavelength of light. These created excitons react with oxygen or water to produce superoxide anions and hydroxyl radicals as a reactive oxygen species (ROS) [14,15]. These species possess the great oxidizing potential to destruct several types of materials including industrial organic dyes.…”

Computational design of graphitic carbon nitride photocatalysts for water splitting

“…2 It is an organic semiconductor composed of carbon and nitrogen in a layered structure made of graphene-like extended sheets with gentle layer undulations. 3 Graphitic carbon nitride has attracted increased attention during the last decade, [4][5][6][7] since the report in 2009 of its application as a visible light photocatalyst for hydrogen evolution from water. 8 Photocatalytic hydrogen production is regarded as a very promising approach to generate clean fuels, as a possible replacement to fossil fuels which have well-known problems of carbon emissions, limited supply, high extraction costs and supply chain volatility.…”

Graphdiyne Coupled with g‐C3N4/NiFe‐Layered Double Hydroxide, a Layered Nanohybrid for Highly Efficient Photoelectrochemical Water Oxidation

“…[ 3–5 ] However, owing to its narrow spectral absorption (the bandgap is ≈2.7 eV), high recombination of photocarriers (due to its slow holes transfer rate) and sluggish interfacial kinetics for O 2 production, the application of pure g‐C 3 N 4 as a photoanode for water oxidation has still remained a challenge. [ 4,6,7 ] Recently, construction heterojunction [ 8–10 ] with a secondary semiconductor such as TiO 2 , [ 11 ] SnO 2 , [ 12 ] CdS, [ 13 ] and BiVO 4 [ 14,15 ] is an effective strategy to improve the performance of g‐C 3 N 4 based photoanodes. Although the success has been achieved from the above heterojunctions, their stabilities were still not well controllable.…”