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Heterojunction Ag–TiO 2 Nanopillars for Visible‐Light‐Driven Photocatalytic H 2 Production
Author(s) -
Qu Yang,
Zhou Wei,
Ren Zhiyu,
Tian Chungui,
Li Jialin,
Fu Honggang
Publication year - 2014
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201402012
Subject(s) - nanopillar , materials science , heterojunction , photocatalysis , surface plasmon resonance , visible spectrum , scanning electron microscope , transmission electron microscopy , titanium dioxide , nanotechnology , optoelectronics , nanoparticle , chemical engineering , nanostructure , catalysis , chemistry , composite material , biochemistry , engineering
Silver–titanium dioxide (Ag–TiO 2 ) heterojunction nanopillars were fabricated by a facile one‐pot method coupled with further calcinations. The results showed that Ag nanoparticles were well dispersed on the surface of TiO 2 nanopillars. The heterojunction composite nanopillars were uniform, approximately 10–20 μm in length and 500–800 nm in diameter. The nanojunctions and surface plasmon resonance effect of Ag–TiO 2 heterojunction nanopillars were confirmed by scanning electron microscopy, transmission electron microscopy, and UV/Vis spectroscopy. The heterojunction Ag–TiO 2 nanopillars showed good photocatalytic H 2 production activities under visible‐light irradiation without costly platinum, owing to the good dispersion and closely contacted junctions, as well as the surface plasmon resonance effect and the porous one‐dimensional structure.