Characterizations and enhanced photocatalytic property of disorder-engineered TiO2 nanomaterials. (11th June 2018)

• Record Type: Journal Article
• Authors: Sun, Chuan; Wang, Shu; Ji, Guangju; Wu, Haijun; Huang, Fuping; Lv, Jiaxing
• Is Part Of: Ferroelectrics. Volume 529(2018)
• Page Start: 149
• Page End: 158
• Publication Date: 2018-06-11
• Subjects: Titanium oxide -- disorder-engineered -- characterization -- photocatalysis; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2018.1458532
• Languages: English
• ISSNs: 0015-0193

Abstract

ABSTRACT: Disorder-engineered TiO2 nanoparticles were synthesized by sol-gel method with twice sintering processes. The analyses of TEM, XPS and PL showed that the structural disorders existed in disorder-engineered TiO2 nanoparticles were caused by introducing a certain concentration of oxygen vacancies (VO s). These structural disorders could tailor the band structure of modified TiO2 by inducing a valence band (VB) tail detected from VB-XPS. This fabrication could not only narrow the bandgap of TiO2 to extend the optical absorption to visible response, but also provide an improvement on photocatalytic activity of TiO2 . To compare with the reference TiO2, disorder-engineered TiO2 showed a remark photodecomposition rate which is beyond 3 times higher than that of reference TiO2 .