Mechanothermal synthesis of Ag/TiO2 for photocatalytic methyl orange degradation and hydrogen production

Saravanan, R, Manoj, D, Qin, J, Naushad, M, Gracia, F, Lee, A, Khan, M and Gracia-Pinilla, M 2018, 'Mechanothermal synthesis of Ag/TiO2 for photocatalytic methyl orange degradation and hydrogen production', Process Safety and Environmental Protection, vol. 120, pp. 339-347.


Document type: Journal Article
Collection: Journal Articles

Title Mechanothermal synthesis of Ag/TiO2 for photocatalytic methyl orange degradation and hydrogen production
Author(s) Saravanan, R
Manoj, D
Qin, J
Naushad, M
Gracia, F
Lee, A
Khan, M
Gracia-Pinilla, M
Year 2018
Journal name Process Safety and Environmental Protection
Volume number 120
Start page 339
End page 347
Total pages 9
Publisher Elsevier
Abstract Photocatalysis offers a promising route to address the challenges of future energy production and anthropogenic environmental pollution. Here we demonstrated the synthesis of a high activity Ag/TiO2 photocatalyst through a two-step, sol-gel and mechanothermal decomposition method employing a silver acetate precursor. Bulk and surface characterization revealed the formation of dispersed metallic silver nanoparticles (~9 nm diameter) decorating anatase crystallites (~14 nm) which stabilized a significant concentration of Ti3+ surface species. Synergy between silver and titania enhanced the photophysical properties, narrowing the band gap and suppressing charge-carrier recombination. Ag/TiO2 exhibited good visible light activity and excellent stability over 3 cycles for the aqueous phase photocatalytic degradation of methyl orange dye (38 �mol/h/gcat), and excellent hydrogen production from water splitting (910 �mol/h/gcat).
Subject Catalytic Process Engineering
Chemical Engineering not elsewhere classified
Catalysis and Mechanisms of Reactions
Keyword(s) Hydrogen
Methyl orange
Photocatalysis
Silver
TiO2
DOI - identifier 10.1016/j.psep.2018.09.015
Copyright notice © 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
ISSN 0957-5820
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