Open AccessEffect of the Amount of Water in the Synthesis of B-TiO2: Orange II Photodegradation
Author(s) -
M. May-Lozano,
G. M. Ramos-Reyes,
Ricardo LópezMedina,
Sergio A. MartínezDelgadillo,
Jorge L. FloresMoreno,
I. Hernández-Pérez
Publication year - 2014
Publication title -
international journal of photochemistry
Language(s) - English
Resource type - Journals
eISSN - 2356-7090
pISSN - 2314-7148
DOI - 10.1155/2014/721216
Subject(s) - anatase , photodegradation , rutile , photocatalysis , fourier transform infrared spectroscopy , materials science , boron , methyl orange , specific surface area , nuclear chemistry , analytical chemistry (journal) , mineralogy , chemistry , chemical engineering , catalysis , environmental chemistry , organic chemistry , engineering
A series of boron-doped TiO2 photocatalysts (2% B-TiO2) with different water/alkoxide molar ratio were synthesized by conventional sol-gel method. The prepared samples were characterized by BET measurement, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIRS), and diffuse-reflectance UV-vis. The phase anatase was present, but unexpectedly a small amount of rutile phase was formed with low and excess water in the synthesis. Additionally it has been observed that the increase in the molar ratio of water significantly increases the values of band gap energy and the specific surface area. Results showed that degradation of Orange II azo dye increases with surface area, particle size, boron, and water content in photocatalysis. The boron species were introduced in the tricoordinated form.
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