Dual roles of [NCN]2- on anatase TiO2: A fully occupied molecular gap state for direct charge injection into the conduction band and an interfacial mediator for the covalent formation of heterostructured g-C3N4/a-TiO2 nanocomposite

• Published in: Applied catalysis. B, Environmental Vol. 273; p. 119036
• Main Authors: Nimbalkar, Dipak B., Ramacharyulu, P.V.R.K., Sahoo, Smruti R., Chen, Jun-Ru, Chang, Chun-Ming, Maity, Amarendra N., Ke, Shyue-Chu
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.09.2020; Elsevier BV
• Subjects: Anatase; Carbon nitride; Charge injection; Conduction; Conduction bands; Density; Energy gap; EPR; g-C3N4; H2 production; Hydrogen production; Mechanism; Melamine; Nanocomposites; Photocatalyst; TiO2; Titanium dioxide; Triazine; H2 production; g-C3N4; Photocatalyst; EPR; Mechanism; TiO2

[Display omitted] •The strategy of low melamine/TiO2 ratio isolates a NCN2−—TiO2 transient species.•NCN2−—TiO2 exhibits excellent activities in H2 production, a novel photocatalyst.•Admixture of NCN2− HOMO π2p with Ti 3d upshifts the state into the bandgap of TiO2.•Five-line EPR pattern from a hole...