Activation effect of silver nanoparticles on the photoelectrochemical performance of mesoporous TiO2 nanospheres photoanodes for water oxidation reaction. (20th April 2017)

• Record Type: Journal Article
• Authors: Arunachalam, Prabhakarn; Amer, Mabrook S.; Ghanem, Mohamed A.; Al-Mayouf, Abdullah M.; Zhao, Dongyuan
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 16(2017)
• Page Start: 11346
• Page End: 11355
• Publication Date: 2017-04-20
• Subjects: Mesoporous TiO2 nanospheres -- Electrophoretic deposition -- Photoelectrochemistry -- Water oxidation reaction; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.03.020
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: This work reports the photodeposition of Ag nanoparticles onto mesoporous TiO2 ( m -TiO2 ) pre-formed by the evaporation-induced self-assembly method. Photoanodes of Ag/ m -TiO2 assembled by electrophoretic disclose a superior photoelectrochemical (PEC) performance for water oxidation reaction related to m -TiO2 . The photoanodes physicochemical investigations witness the even arrangement of m -TiO2 nanospheres particles over the substrates. The PEC study displays a steady photocurrent density of 1 mAcm −2 at −1.0 V vs SCE was attained for Ag/ m -TiO2 photoanodes in visible light illumination and it is nearly twofold enhancements in comparison with m -TiO2 photoanodes. The observed superior PEC nature was attributed to the reduced band-gap energy and charge recombination that caused from the incorporation of plasmonic photodeposited Ag nanoparticles on m -TiO2 nanospheres photoanodes. Highlights: We report the Ag/meso-TiO2 based catalyst for photoelectrochemical water oxidation. Photocurrent density of 1 mA/cm 2 was observed for Ag/ m -TiO2 nanospheres photoanodes. Superior performance was attributed to plasmonic photodeposited Ag nanoparticles.