Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11030048 | Process Safety and Environmental Protection | 2018 | 21 Pages |
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 (â¼9ânm diameter) decorating anatase crystallites (â¼14ânm) 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 (38âμmol/h/gcat), and excellent hydrogen production from water splitting (910âμmol/h/gcat).
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Authors
R. Saravanan, Devaraj Manoj, Jiaqian Qin, Mu. Naushad, F. Gracia, Adam F. Lee, Mohammad Mansoob Khan, M.A. Gracia-Pinilla,