Photoelectrochemical and photocatalytic activities of bilayered TiO{sub 2}/Ga:WO{sub 3} photoelectrode by spray pyrolysis technique

Journal Article · Wed Nov 15 04:00:00 EST 2017 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2017.06.043· OSTI ID:22730475

Mohite, S. V. ^[1]; Ganbavle, V. V. ^[2]

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1. Electrochemical Materials Laboratory, Department of Physics, Shivaji University, Kolhapur 416004 (India)
2. Department of Physics, Dattajirao Kadam Arts, Science and Commerce College, Ichalkaranji 416115 (India)

Graphical abstract: Photoelectrochemical performance of WO{sub 3}, Ga:WO{sub 3} and bilayered TiO{sub 2}/Ga:WO{sub 3} photoelectrodes and degradation of salicylic acid using immobilized bilayered TiO{sub 2}/Ga:WO{sub 3} photocatalyst. - Highlights: • Photoelectrochemical and photocatalytic activities of bilayered TiO{sub 2}/Ga:WO{sub 3} photoelectrode. • Structural analysis of WO{sub 3}, Ga:WO{sub 3} and bilayered TiO{sub 2}/Ga:WO{sub 3} thin films. • Photoelectrocatalytic degradation of salicylic acid. - Abstract: WO{sub 3}, Ga:WO{sub 3} and bilayered TiO{sub 2}/Ga:WO{sub 3} photocatalysts are synthesized by spray pyrolysis technique. Synthesized films are characterized by various characterization techniques such as structural, morphological and photoelectrochemical properties. Synthesized films are polycrystalline in nature. The TiO{sub 2}/Ga:WO{sub 3} photoelectrode exhibits highest photocurrent density (1569 μA/cm{sup 2}) than that of pure WO{sub 3} and Ga:WO{sub 3} films due the prevent the recombination of photogenerated electron-hole pairs. Photoelectrocatalytic activities of WO{sub 3}, Ga:WO{sub 3} and bilayered TiO{sub 2}/Ga:WO{sub 3} photoelectrodes are tested for photodegradation of salicylic acid as a model organic pollutant. The results show that the bilayered TiO{sub 2}/Ga:WO{sub 3} photocatalyst has an efficient photocatalytic ability as compared to pure WO{sub 3} and Ga:WO{sub 3} photocatalysts.

• OSTI ID: 22730475
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 95; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CATALYSTS
ELECTROCHEMISTRY
OXIDATION
PHOTOCATALYSIS
PYROLYSIS
SALICYLIC ACID
SPRAYS
SYNTHESIS
THIN FILMS
TITANIUM OXIDES
TITANIUM TUNGSTATES