caa a22 4500 606196269 CHVBK 20210128100923.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10934-015-9925-9 doi (NATIONALLICENCE)springer-10.1007/s10934-015-9925-9 Enhanced visible light photocatalytic activity of P-block elements (C, N and F) doped porous TiO2 coatings on Cp-Ti by micro-arc oxidation [Elektronische Daten] [S. Sridhar, A. Viswanathan, K. Venkateswarlu, N. Rameshbabu, N. Parthasarathi] P-block elements (C, N and F) doped porousTiO2 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 thedoped elements. The anatase and rutile phase percentage in the pure and doped TiO2 coatings was estimated by their XRD patterns. EDS analysis confirms the presence of C, N and F (2.2, 3.1 and 3.8at.%) doped elements in the TiO2 coatings. The band gap energies of C, N and F doped TiO2 coatings were significantly reduced into 3.03, 3.04 and 3.02eV, respectively than pure TiO2 (3.15eV) coating. The photoluminescence study indicates the formation of additional electronic states by the influence of C, N and F doped elements in TiO2. This resulted in the reduced rate of recombination of photogenerated electron-hole pairs. The photocatalytic activity of MAO produced pure and doped TiO2 coatings have been investigated with methylene blue dye as a target pollutant. The results confirmed that the doped TiO2 showed higher rate of dye degradation than pure TiO2. In particular F doped TiO2 revealed higher photocatalytic activity among all other doped TiO2. Springer Science+Business Media New York, 2015 Micro-arc oxidation nationallicence Porous coatings nationallicence P-block elements doped TiO2 nationallicence Photocatalytic activity nationallicence Electron-hole pair's recombination nationallicence Dye degradation nationallicence Sridhar S. Department of Physics, Bharathidasan Institute of Technology (BIT) Campus, Anna University, 620 024, Tiruchirappalli, Tamilnadu, India aut Viswanathan A. Department of Physics, Bharathidasan Institute of Technology (BIT) Campus, Anna University, 620 024, Tiruchirappalli, Tamilnadu, India aut Venkateswarlu K. Department of Metallurgical and Materials Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamilnadu, India aut Rameshbabu N. Department of Metallurgical and Materials Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamilnadu, India aut Parthasarathi N. Materials Technology Division, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, Tamilnadu, India aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/2(2015-04-01), 545-557 1380-2224 22:2<545 2015 22 10934 https://doi.org/10.1007/s10934-015-9925-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-9925-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sridhar S. Department of Physics, Bharathidasan Institute of Technology (BIT) Campus, Anna University, 620 024, Tiruchirappalli, Tamilnadu, India aut NATIONALLICENCE 700 1- Viswanathan A. Department of Physics, Bharathidasan Institute of Technology (BIT) Campus, Anna University, 620 024, Tiruchirappalli, Tamilnadu, India aut NATIONALLICENCE 700 1- Venkateswarlu K. Department of Metallurgical and Materials Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamilnadu, India aut NATIONALLICENCE 700 1- Rameshbabu N. Department of Metallurgical and Materials Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamilnadu, India aut NATIONALLICENCE 700 1- Parthasarathi N. Materials Technology Division, Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, Tamilnadu, India aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/2(2015-04-01), 545-557 1380-2224 22:2<545 2015 22 10934