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Review on Undoped/Doped TiO 2 Nanomaterial; Synthesis and Photocatalytic and Antimicrobial Activity
Author(s) -
Yadav Shweta,
Jaiswar Gautam
Publication year - 2017
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201600735
Subject(s) - nanomaterials , photocatalysis , doping , chemistry , band gap , nanotechnology , antimicrobial , charge carrier , absorption edge , photochemistry , materials science , optoelectronics , catalysis , organic chemistry
This review covers the various synthetic methods of doped and undoped TiO 2 nanomaterials, ranging from single‐doped and co‐doped to multidoped with transition‐metal ions, rare earth metal ions, and other metals and nonmetals ions. The effects of doping on the physiochemical propertiesas well as the photocatalytic and antimicrobial activities of TiO 2 nanomaterial are discussed. The results from the literature show that doping of TiO 2 shifts the absorption edge to the visible region as a result of the decrease in the bandgap due to the formation of new energy levels in the bandgap. The dopent also acts as a trapping center for electrons and holes, thereby reducing the recombination rate of charge carriers and increasing the photocatalytic and antimicrobial activity of TiO 2 nanomaterials. All multidoped TiO 2 nanomaterials show higher activity than their undoped, single‐doped, and co‐doped counterparts.