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TiO 2 /WO 3 /Au/MWCNT composite materials for photocatalytic hydrogen production: Advantages and draw‐backs
Author(s) -
Pap Zsolt,
Karácsonyi Éva,
Baia Lucian,
Pop Lucian Cristian,
Danciu Virginia,
Hernádi Klára,
Mogyorósi Károly,
Dombi András
Publication year - 2012
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201200095
Subject(s) - photocatalysis , materials science , anatase , composite number , hydrogen production , sodium borohydride , nanocomposite , oxalic acid , chemical engineering , nanotechnology , rutile , carbon nanotube , transmission electron microscopy , hydrogen , composite material , catalysis , inorganic chemistry , chemistry , organic chemistry , engineering
TiO 2 /WO 3 /Au/MWCNT composite materials were obtained using different commercial titanias (Aldrich Anatase, Aldrich Rutile, and Evonik Aeroxide P25) and Aldrich WO 3 . The gold nanoparticles were deposited on the semiconductor oxides' surface by chemical reduction using sodium borohydride, and the MWCNT's were combined with the composite (in different concentrations 0.1–10 wt%) by applying an ultrasonication method. The obtained nanocomposites were successfully characterized by means of X‐ray diffraction, transmission electron microscopy, etc. The aim of the present work was to find the optimal composition (i.e. carbon nanotube content) of the composite for photocatalytic hydrogen production using oxalic acid as a sacrificial agent.