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Gold‐Nanoparticle‐Loaded Carbonate‐Modified Titanium(IV) Oxide Surface: Visible‐Light‐Driven Formation of Hydrogen Peroxide from Oxygen
Author(s) -
Teranishi Miwako,
Hoshino Riyoko,
Naya Shinichi,
Tada Hiroaki
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201606734
Subject(s) - rutile , photocatalysis , hydrogen peroxide , materials science , irradiation , titanium , visible spectrum , oxygen , nanoparticle , hydrogen , titanium dioxide , nuclear chemistry , carbonate , precipitation , photochemistry , chemistry , nanotechnology , catalysis , biochemistry , physics , optoelectronics , organic chemistry , meteorology , nuclear physics , metallurgy
Abstract Gold nanoparticle‐loaded rutile TiO 2 with a bimodal size distribution around 10.6 nm and 2.3 nm (BM‐Au/TiO 2 ) was prepared by the deposition precipitation and chemical reduction (DP‐CR) technique. Visible‐light irradiation (λ>430 nm) of the BM‐Au/TiO 2 plasmonic photocatalyst yields 35 μ m H 2 O 2 in aerated pure water at irradiation time ( t p )=1 h, and the H 2 O 2 concentration increases to 640±60 μ m by the addition of 4 % HCOOH as a sacrificing electron donor. Further, a carbonate‐modified surface BM‐Au/TiO 2 (BM‐Au/TiO 2 ‐CO 3 2− ) generates a millimolar level of H 2 O 2 at t p =1 h with a quantum efficiency ( Φ ) of 5.4 % at λ =530 nm under the same conditions. The recycle experiments confirmed the stable performance of BM‐Au/TiO 2 .