Enhanced Photocatalytic Performance of TiO2 Hierarchical Spheres Decorated with Ag2S Nanoparticles. (2016)

• Record Type: Journal Article
• Authors: Ong, Wei Li; Ho, Ghim Wei
• Is Part Of: Procedia engineering. Volume 141(2016)
• Page Start: 7
• Page End: 14
• Publication Date: 2016
• Subjects: TiO2 -- Ag2S -- photocatalyst -- water splitting -- methyl orange.; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2015.09.217
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: TiO2 hierarchical spheres synthesized via solvothermal method were decorated with Ag2 S nanoparticles as co-catalyst at room temperature. The Ag2 S nanoparticles improved the charge separation efficiency, thereby reducing recombination and enhancing the photocatalytic performance. The optimized Ag2 S loading on TiO2 could produce hydrogen (H2 ) gas at an evolution rate of 707.6 μmol h -1 g -1 and degrade methyl orange with a rate constant of 0.018 min -1 . The composite material presents properties which are highly promising for environmental clean up and clean energy generation applications.