Photocatalytic degradation of pentachlorophenol in aqueous solution by visible light sensitive N-F-codoped TiO{sub 2} photocatalyst

Journal Article · Wed May 15 04:00:00 EDT 2013 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.01.047· OSTI ID:22290436

Govindan, Kadarkarai ^[1]; Murugesan, Sepperumal ^[1]; Maruthamuthu, Pitchai ^[2]

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1. Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625021 (India)
2. Department of Energy (Chemistry-Interdisciplinary), University of Madras, Guindy Campus, Chennai 600025 (India)

Graphical abstract: Schematic representation for the visible light photocatalytic process of N and F codoped TiO{sub 2}. Highlights: ► Visible light sensitive N-F-codoped TiO{sub 2}. ► Photocatalytic degradation of pentachlorophenol. ► Effect of oxidants on photocatalytic degradation of pentachlorophenol. ► PMS is a more efficient oxidant for the photodegradation of PCP. - Abstract: In this present study, N-F-codoped titanium dioxide nanocatalyst (NFTO) has been synthesized by simple sol–gel assisted solvothermal method for the effective utilization of visible light in photocatalytic reactions. Structural characterization of the photocatalyst is analyzed by XRD, UV–vis diffuse reflectance spectra (DRS), SEM and TEM. Moreover the chemical statuses of NFTO are gathered by X-ray photoelectron spectroscopy (XPS). The results show that a high surface area with photoactive anatase phase crystalline is obtained. In addition, nitrogen and fluorine atoms are doped into TiO{sub 2} crystal lattice to extend the visible light absorption and higher photocatalytic activity. The photocatalytic degradation of pentachlorophenol in aqueous solution is examined under visible light irradiation, the addition of oxidants such as PMS, PDS and H{sub 2}O{sub 2} is analyzed in detail. The rate of photocatalytic degradation of pentachlorophenol is obtained in the following order: PMS > PDS > H{sub 2}O{sub 2}.

• OSTI ID: 22290436
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 5 Vol. 48; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AQUEOUS SOLUTIONS
CRYSTAL LATTICES
DOPED MATERIALS
HYDROGEN PEROXIDE
PHOTOCATALYSIS
SURFACE AREA
TITANIUM OXIDES
VISIBLE RADIATION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY