NDLI: Enhanced visible light photocatalytic activity of P-block elements (C, N and F) doped porous TiO$_{2}$ coatings on Cp-Ti by micro-arc oxidation

Content Provider	Springer Nature Link
Author	Sridhar, S. Viswanathan, A. Venkateswarlu, K. Rameshbabu, N. Parthasarathi, N. L.
Copyright Year	2015
Abstract	P-block elements (C, N and F) doped porous TiO$_{2}$ coatings were developed on commercially pure titanium by micro-arc oxidation (MAO) for visible light photocatalytic activity. Porous structured photocatalytic system has been developed with the use of different electrolytes. The geometry of porous coatings was analyzed by optical profilometer and their results confirmed that the surface roughness, width and depth of pores vary with respect to the doped elements. The anatase and rutile phase percentage in the pure and doped TiO$_{2}$ coatings was estimated by their XRD patterns. EDS analysis confirms the presence of C, N and F (2.2, 3.1 and 3.8 at.%) doped elements in the TiO$_{2}$ coatings. The band gap energies of C, N and F doped TiO$_{2}$ coatings were significantly reduced into 3.03, 3.04 and 3.02 eV, respectively than pure TiO$_{2}$ (3.15 eV) coating. The photoluminescence study indicates the formation of additional electronic states by the influence of C, N and F doped elements in TiO$_{2}$. This resulted in the reduced rate of recombination of photogenerated electron–hole pairs. The photocatalytic activity of MAO produced pure and doped TiO$_{2}$ coatings have been investigated with methylene blue dye as a target pollutant. The results confirmed that the doped TiO$_{2}$ showed higher rate of dye degradation than pure TiO$_{2}$. In particular F doped TiO$_{2}$ revealed higher photocatalytic activity among all other doped TiO$_{2}$.
Starting Page	545
Ending Page	557
Page Count	13
File Format	PDF
ISSN	13802224
Journal	Journal of Porous Materials
Volume Number	22
Issue Number	2
e-ISSN	15734854
Language	English
Publisher	Springer US
Publisher Date	2015-02-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Micro-arc oxidation Porous coatings P-block elements doped TiO$_{2}$ Photocatalytic activity Electron–hole pair’s recombination Dye degradation Catalysis Characterization and Evaluation of Materials Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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