Photoelectrochemical Methanol Oxidation by TiN Nanoparticles Supported on TiO2. (19th June 2018)

• Record Type: Journal Article
• Authors: Baturina, Olga A; Epshteyn, Albert; Simpkins, Blake
• Is Part Of: ECS transactions. Volume 85:Number 13(2018)
• Page Start: 1171
• Page End: 1177
• Publication Date: 2018-06-19
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/08513.1171ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Photocatalytic activity of TiO2 -supported TiN and Au nanoparticles towards methanol oxidation is investigated under both visible and UV light excitation. We demonstrate that the TiN/TiO2 photocatalyst performs better than the Au/TiO2 under visible excitation at potentials more positive than 0.1 V vs a Ag/AgCl reference electrode. Under UV excitation, photocurrent enhancement is observed for both the TiN/TiO2 and the Au/TiO2 photocatalysts in the entire potential region from -0.6 to 0.5 V, as compared to pure TiO2 . The photocurrent enhancement under UV excitation was assigned to (1) better charge separation in the Au/TiO2 photocatalyst, and (2) generation of highly reactive holes due to interband transitions in TiN and Au nanoparticles.