Self-oxygenated anatase-rutile phase junction: Ensuring the availability of sufficient surface charges for photocatalysis

Sanjay Gopal Ullattil, Ahmed Abdel-Wahab

Research output: Contribution to journalArticle

Abstract

A peroxide assisted solvothermal strategy has been developed for the synthesis of self-oxygenated anatase-rutile mixed phase yellow TiO2. The yellow TiO2 possessed surface oxygen richness which has increased absorption to the visible region. The addition of peroxide to the isopropanol-titanium(iv) butoxide mixture paved the way for self-oxygenation. The self-oxygenated titania has enormous oxygen at its surface, and hence a negative charge cloud. This is beneficial for the selective degradation of cationic pollutants which is of great interest in contemporary society. This negatively charged surface of the self-oxygenated, anatase-rutile yellow titania mixed phase formed below the anatase to rutile transition temperature ca. 300 °C has facilitated more efficient solid-solid interfaces and thus interparticle charge transfer in photocatalysis. This strategy is directed towards more efficient photocatalysis of self-oxygenated mixed phase yellow TiO2 than that of the commercially available photocatalyst P25 titania.

Original languageEnglish
Pages (from-to)5513-5518
Number of pages6
JournalNew Journal of Chemistry
Volume44
Issue number14
DOIs
Publication statusPublished - 14 Apr 2020

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ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry

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