Preparation and characterization of Fe-doped TiO2 powders for solar light response and photocatalytic applications | Zendy

Ibram Ganesh | Zendy; Polkampally Kumar | Zendy; Abhishek Kumar Gupta | Zendy; P.S. Chandra Sekhar | Zendy; Kalathur Radha | Zendy; G. Padmanabham | Zendy; G. Sundararajan | Zendy

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Preparation and characterization of Fe-doped TiO2 powders for solar light response and photocatalytic applications

Author(s) -

Ibram Ganesh,

Polkampally Kumar,

Abhishek Kumar Gupta,

P.S. Chandra Sekhar,

Kalathur Radha,

G. Padmanabham,

G. Sundararajan

Publication year - 2012

Publication title -

processing and application of ceramics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.326

H-Index - 15

eISSN - 2406-1034

pISSN - 1820-6131

DOI - 10.2298/pac1201021g

Subject(s) - materials science , anatase , photocatalysis , raman spectroscopy , fourier transform infrared spectroscopy , band gap , dopant , diffuse reflectance infrared fourier transform , diffuse reflection , analytical chemistry (journal) , doping , chemical engineering , nuclear chemistry , optics , catalysis , optoelectronics , chemistry , biochemistry , physics , chromatography , engineering

Different amounts of Fe-doped TiO2 (with 0.1 to 10 wt.% Fe) powders were prepared at temperatures in the range of 400 and 800°C following a conventional co-precipitation technique and were thoroughly characterized by means of X-ray diffraction (XRD), Fourier-transform infrared (FT-IR), Fourier-transform Raman (FT-Raman), diffuse reflectance spectroscopy (DRS), BET surface area, zeta potential and flat band potential measurements. Photocatalytic ability of Fe-doped TiO2 powders was evaluated by means of methylene blue (MB) degradation experiments conducted under the irradiation of simulated solar light. Characterization results suggested that as a dopant Fe stabilized TiO2 in the form of anatase phase, reduced its band gap energy and adjusted its flat band potentials in such a way that these powders can be employed for photoelectrolysis of water into hydrogen and oxygen in photoelectrochemical (PEC) cells. The 0.1 wt.% Fe-doped TiO2 exhibited highest activity in the photocatalytic degradation of MB. The kinetic studies revealed that the MB degradation reaction follows the Langmuir-Hinshelwood first order reaction rate.

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