Journal of Materials and Engineering Structures
Volume 11, Numéro 2, Pages 167-179
2024-06-30

"sol-gel" Synthesis Of Tio2 And Ag-tio2 Nanocrystals By Direct Doping: Characterization And Application In Ch3oh Degradation

Authors : Muke Musengele Bilasi Denis . Jérémie Muswema Lunguya . Pierre Lohohola Osomba . Joseph Malongwe K’ekuboni . Pascal Disa-disa Maziana . Omer Mvele Muamba . Trésor Ndonganzadi . Fifi Muderhwa Mulangala . Carlos Kabengele Nkongolo . Gracien Ekoko Bakambo .

Abstract

TiO2 and doped Ag-TiO2 nanoparticles have been synthesized via a « sol-gel » technique, starting with titan isopropoxide T_i [OCH 〖(CH_3)〗_2 ]_4 in the presence of ethanol (≥99,8% purity), of distilled water (at pH = 9) and of ammonium hydroxide (NH4OH 30%). The powders obtained were identified as pure TiO2 and doped Ag-TiO2 through XRD and FTIR methods. The nanoparticles of TiO2 prepared through our procedure compared well with those of the commercial TiO2 (TiO2 Degussa P25) and they were tested in the photocatalytic degradation of methanol.

Keywords

Sol-gel ; TiO2 nanoparticles ; Ag-TiO2 doped NPs ; Photodegradation