Preparation of nanodispersed titania using stabilized ammonium nitrate melts

Monica Raciulete, Anna Kachina, Eric Puzenat, Pavel Afanasiev

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

An expedite one-step approach using simple precursors has been proposed to obtain metallic oxide compounds and exemplified by preparation of highly dispersed TiO2. The technique consists in heating to 400500 °C of molten ammonium nitrate stabilized with an organic nitrogen-containing compound (urea, melamine, ammonium oxalate) and containing dissolved metal salt precursor (TiOCl2). The crystallites of the resulting TiO2 demonstrated variable size and shape as a function of stabilizer used. Their activity in photocatalytic oxidation of formic acid also depends on the nature of the stabilizer. The catalysts as-prepared showed high photocatalytic performance, superior to that of the Degussa P25 reference. Nitrogen containing stabilizers play a double role of increasing the process safety and modifying the properties of the solid products. © 2010 Elsevier Inc. All rights reserved.
Original languageEnglish (US)
Pages (from-to)2438-2444
Number of pages7
JournalJournal of Solid State Chemistry
Volume183
Issue number10
DOIs
StatePublished - Oct 2010
Externally publishedYes

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