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Dicarboxylic Acids as Soft Templates for the Sol‐Gel Synthesis of Mesoporous Nano TiO 2 with Enhanced Photocatalytic Activity
Author(s) -
Bakre Pratibha V.,
Tilve Santosh G.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701132
Subject(s) - photocatalysis , adipic acid , tartaric acid , succinic acid , malonic acid , dicarboxylic acid , materials science , glutaric acid , selected area diffraction , scanning electron microscope , nuclear chemistry , anatase , mesoporous material , fourier transform infrared spectroscopy , diffuse reflectance infrared fourier transform , oxalic acid , chemistry , inorganic chemistry , transmission electron microscopy , chemical engineering , organic chemistry , catalysis , nanotechnology , polymer chemistry , citric acid , composite material , engineering
Abstract In this study we have synthesized TiO 2 nanoparticles by sol‐gel method utilizing different dicarboxylic acid modifiers viz . oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, malic acid and tartaric acid and compared their properties. The synthesized particles were characterized by Fourier transform infra red spectroscopy (FTIR), ultraviolet diffuse reflectance spectroscopy (UV‐DRS), X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), energy dispersive X‐ray (EDX) and Brunauer‐Emmett‐Teller (BET) surface area measurement. The results indicate that the phase purity of the particles depend on the nature of precursor dicarboxylic acid. The synthesized samples were compared with Degussa P25 for photocatalytic activity by direct sunlight degradation of methylene blue. Samples prepared from malonic and glutaric acid precursors were found to show better photocatalytic activity than the P25 and were found to have maximum mesoporosity, smaller size and exclusive anatase phase.