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M‐Doped TiO 2 and TiO 2 –M x O y Mixed Oxides (M = V, Bi, W) by Reactive Mineralization of Cellulose – Evaluation of Their Photocatalytic Activity
Author(s) -
Plumejeau Sandrine,
Rivallin Matthieu,
Brosillon Stephan,
Ayral André,
Boury Bruno
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201501293
Subject(s) - chemistry , doping , photocatalysis , vanadium , inorganic chemistry , diffuse reflectance infrared fourier transform , metal , scanning electron microscope , anhydrous , oxalate , nuclear chemistry , analytical chemistry (journal) , mineralogy , catalysis , materials science , biochemistry , optoelectronics , organic chemistry , chromatography , composite material
M‐doped TiO 2 and mixed oxides M x O y –TiO 2 (M = V, Bi, W) were synthesized by the reactive mineralization of ash‐free filter paper under anhydrous conditions. Mixtures of metal chlorides (TiCl 4 with VOCl 3 , WCl 6 , or BiCl 3 ) were reacted directly with cellulose, and three different Ti/M atomic ratios were used (99, 19, and 9). The resulting materials consist of original nanoflower assemblies of needle‐shaped primary particles. Their physicochemical characteristics were investigated by various techniques (X‐ray diffraction, diffuse‐reflectance UV/Vis spectroscopy, electron microscopy, and elemental analysis). The incorporation of the doping metal or the formation of mixture of oxides with TiO 2 (WO 3 , Bi 2 O 3 ) depends on the metal and the proportions used. The photocatalytic activities of the materials were tested for the degradation of phenol. The vanadium‐doped materials exhibit true solid‐solution formation and their band gaps shift into the visible range.