Study on TiO2/g-C3N4 S-Scheme heterojunction photocatalyst for enhanced formaldehyde decomposition

Applications of graphitic carbon nitride-based S-scheme heterojunctions for environmental remediation and energy conversion

“…Though the procedure is simple, during thermal polycondensation of melamine or dicyandiamide, some toxic gases are released which can pollute the atmosphere. However in the case of thermal polymerization of urea, the attained yield is meager, and the calcination environment, as well as the temperature, are stringent (Wu et al, 2022). The expected photocatalytic mechanism of g-C 3 N 4 photocatalyst is presented in Fig.…”

“…Still, thermodynamically type-II is imperfect due to significant electrostatic repulsion among eand h +, which prevents their transferal in type-II heterojunction Xu et al, 2020). Because of type-II heterostructures limitations, traditional Z-Scheme heterojunction was offered to speed-up charge carriers separation rate while preserving great redox ability, but this fit only for the solution systems (Wu et al, 2022;Zhou et al, 2014). Later on, researchers suggested all-solid-state (ASS) and direct Z-scheme heterojunctions with enhanced features Low et al, 2017a).…”

Engineering S-scheme CuO/ZnO heterojunctions sonochemically for eradicating RhB dye from wastewater under solar radiation

“…The S-scheme mechanism is an auspicious novel aspect for exploring the real direction of charge transportation through the heterojunction circuit under solar light illumination. [29][30][31][32][33][34][35][36][37][38][39][40] . The heterojunction is composed of oxidative and reductive photocatalysts with different work functions and Fermi level positions.…”

N-doped rutile TiO2 nanorod@g-C3N4 core/shell S-scheme heterojunctions for boosting CO2 photoreduction activity

“…25 However, its application is still limited by its low carrier separation efficiency and high carrier migration resistance. 26 Since g-C 3 N 4 and TiO 2 exhibit n-type properties and unequal work functions, they represent very promising materials for producing S-scheme heterojunctions. For example, Jiang et al 27 synthesised 0D/2D TiO 2 /g-C 3 N 4 hybrids via an interfacial phase reaction, forming an S-scheme heterojunction.…”