Bandgap optimization of sol–gel-derived Tio2 and its effect on the photodegradation of formic acid

Morad Zouheir*, Ouissal Assila, Karim Tanji, Abdelali El Gaidoumi, Javier Araña, José Miguel Doña Rodríguez, Jan-Henrik Smått, Tan-Phat Huynh*, Abdelhak Kherbeche*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

This work reports a key factor, the H2SO4 concentration, in controlling the physicochemical properties of titanium dioxide (TiO2) photocatalysts during the sol–gel synthesis. The photocatalysts synthesized using different concentrations of H2SO4 possess specific anatase/rutile ratios and crystallite sizes as well as surface areas, resulting in different photocatalytic performance in the degradation of formic acid in solution. The best photocatalytic performance is observed for the TiO2 photocatalyst containing a relatively high percentage of the rutile phase (∼84%), which is obtained from the sol–gel synthesis without H2SO4.

Original languageEnglish
Article number025004
JournalNano Futures
Volume5
Issue number2
DOIs
Publication statusPublished - 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Bandgap
  • Formic acid degradation
  • Photocatalysis
  • Sol–gel synthesis
  • TiO

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