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2014 | 23 | 2 |
Tytuł artykułu

Exploring the photodegradation of bisphenol A in a sunlight/immobilized N-TiO2 system

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Few studies have examined the photodegradation of bisphenol A (BPA) by sunlight/immobilized TiO₂ systems. In this investigation, N-doped TiO₂ (N-TiO₂) was prepared by the calcination of Degussa P25 and urea. The surface characteristics of N-TiO₂ were analyzed by X-ray diffraction, specific surface area analysis, ultraviolent (UV)-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of the prepared photocatalysts was determined by using them in the photodegradation of BPA under sunlight irradiation. The N-doping of TiO₂ reduced the particle size and band gap of the compound, while increasing the specific surface area and percentage of anatase therein. XPS characterization confirms the substitution of O in the crystal lattice for N species in N-TiO₂, forming O-Ti-N. The BPA degradation rate can be approximated by pseudofirst- order kinetics. At a N/Ti mole ratio of one for N-TiO₂, the rates of BPA photodegradation and mineralization were 0.042 and 0.006 min-1, respectively.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
23
Numer
2
Opis fizyczny
p.379-384,fig.,ref.
Twórcy
autor
  • Department of Environmental and Safety Engineering, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan
autor
  • Department of Environmental and Safety Engineering, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan
Bibliografia
  • 1. XING M., ZHANG J., CHEN F. New approaches to prepare nitrogen-doped TiO₂ photocatalysts and study on their photocatalytic activities in visible light. Appl. Catal. B-Environ. 89, 563, 2009.
  • 2. ASAHI R., MORIKAWA T., OHWAKI T., AOKI K., TAGA Y. Visible-light photocatalysis in nitrogen-doped titanium oxides. Science 293, 269, 2001.
  • 3. SILVEYRA R., SAENZ L.T., FLORES W.A., MARTINEZ V.C., ELGUEZABAL A.A. Doping of TiO₂ with nitrogen to modify the interval of photocatalytic activation towards visible radiation. Catal. Today 107-108, 602, 2005.
  • 4. XIANG X., CHEN M., JU Y.F., ZU X T., WANG L.M., ZHANG Y. N-TiO₂ nanoparticles embedded in silica prepared by Ti ion implantation and annealing in nitrogen. Nucl. Instrum. Meth. B. 268, 1440, 2010.
  • 5. YANG J., DAI J., LI J. Synthesis, characterization and degradation of bisphenol A using Pr, N co-doped TiO₂ with highly visible light activity. Appl. Surf. Sci. 257, 8965, 2011.
  • 6. WANG X., LIM T.T. Solvothermal synthesis of C-N codoped TiO₂ and photocatalytic evaluation for bisphenol A degradation using a visible-light irradiated LED photoreactor. Appl. Catal. B-Environ. 100, 355, 2010.
  • 7. WU C.H., KUO C.Y., LIN C.J., CHIOU P.K. Preparation of N-TiO₂ using a microwave/sol-gel method and its photocatalytic activity for bisphenol A under visible-light and sunlight irradiation. Int. J. Photoenergy 2013, 1, 2013.
  • 8. KANECO S., RAHMAN M.A., SUZUKI T., KATSUMATA H., OHTA K. Optimization of solar photocatalytic degradation conditions of bisphenol A in water using titanium dioxide. J. Photoch. Photobio. A. 163, 419, 2004.
  • 9. SPURR R.A., MYERS H. Quantitative analysis of anataserutile mixtures with an X-ray diffractometer. Anal. Chem. 29, 760, 1957.
  • 10. KANG I.C., ZHANG Q., YIN S., SATO T., SAITO F. Preparation of a visible sensitive carbon doped TiO₂ photocatalyst by grinding TiO₂ with ethanol and heating treatment. Appl. Catal. B-Environ. 80, 81, 2008.
  • 11. RENGIFO-HERRERA J.A., KIWI J., PULGARIN C. N, S co-doped and N-doped Degussa P-25 powders with visible light response prepared by mechanical mixing of thiourea and urea. Reactivity towards E. coli inactivation and phenol oxidation. J. Photoch. Photobio. A. 205, 109, 2009.
  • 12. LI H., LI J., HUO Y. Highly active TiO₂N photocatalysts prepared by treating TiO₂ precursors in NH₃/ethanol fluid under supercritical conditions. J. Phys. Chem. B. 110, 1559, 2006.
  • 13. SAKTHIVEL S., JANCZAREK M., KISCH H. Visible light activity and photoelectrochemical properties of nitrogen-doped TiO₂. J. Phys. Chem. B. 108, 19384, 2004.
  • 14. PENG F., CAI L., YU H., WANG H., YANG J. Synthesis and characterization of substitutional and interstitial nitrogen-doped titanium dioxides with visible light photocatalytic activity. J. Solid State Chem. 181, 130, 2008.
  • 15. ZHANG X., ZHOU M., LEI L. Preparation of an Ag-TiO₂ photocatalyst coated on activated carbon by MOCVD. Mater. Chem. Phys. 91, 73, 2005.
  • 16. KUO C.Y., WU C.H., LIN H.Y. Photocatalytic degradation of bisphenol A in a visible light/TiO₂ system. Desalination 256, 37, 2010.
  • 17. WATANABE N., HORIKOSHI S., KAWABE H., SUGIE Y., ZHAO J., HIDAKA H. Photodegradation mechanism for bisphenol A at the TiO₂/H₂O interfaces. Chemosphere 52, 851, 2003.
  • 18. HORIKOSHI S., TOKUNAGA A., HIDAKA H., SERPONE N. Environmental remediation by an integrated microwave/UV illumination method: VII. Thermal/nonthermal effects in the microwave-assisted photocatalyzed mineralization of bisphenol-A. J. Photoch. Photobio. A. 162, 33, 2004.
  • 19. CHIANG K., LIM T.M., TSEN L., LEE C.C. Photocatalytic degradation and mineralization of bisphenol A by TiO₂ and platinized TiO₂. Appl. Catal. A-Gen. 261, 225, 2004.
  • 20. WANG X., LIM T.T. Effect of hexamethylenetetramine on the visible-light photocatalytic activity of C-N codoped TiO₂ for bisphenol A degradation: evaluation of photocatalytic mechanism and solution toxicity. Appl. Catal. A-Gen. 399, 233, 2011.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
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