Studies on Nitrate Reduction by Zinc-doped Titanium Dioxide Photocatalyst

Main Article Content

Satit Phiyanalinmat
Phawinee Nanta


The research aimed to prepare Zinc-doped TiO2 photocatalyst by impregnation to reduce nitrate ion by UVC irradiation. The effects of Zn loading, ethanol concentration
and hydrogen peroxide addition were examined. During the reaction test, the nitrate concentration was determined by UV-vis spectrophotometry. Then, the conversion was analyzed to evaluate nitrate reduction for the catalyst performance. The catalyst characterization was measured for the surface area and particle size by BET and Laser particle size methods, respectively. Among various results, it was found that 12%wt. Zn-doped TiO2 photocatalyst with 0.06 M ethanol gave 31.62% for nitrate reduction. It had the surface area of 10.62 m2/g and the particle size about 7.62 microns. It was speculated that ethanol became the holescavenger reagent to increase the nitrate reduction while H2O2 enhanced the efficiency of photolysis. Therefore, it can be concluded that Zn-doped TiO2 photocatalyst can reduce nitrate ion



Download data is not yet available.

Article Details

Research Article


T. H. Blackburn and J. Sorensen, Nitrogen cycling in Costal Marine Environment. New York: Wiley, 1988.

B. Singh and G. S. Sekhon, “Nitrate pollution of groundwater from nitrogen fertilizers and animal wastes in the Punjab, India,” Agriculture and Environment, vol. 3, no. 1, pp. 57–67, Dec. 1976.

A. Maceda-Veiga, G. Webster, O. Canals, H. Salvadó, A. J. Weightman, and J. Cable, “Chronic effects of temperature and nitrate pollution on Daphnia magna: Is this cladoceran suitable for widespread use as a tertiary treatment?,” Water Res., vol. 83, pp. 141–152, Oct. 2015.

F. a. L. Pacheco and L. F. Sanches Fernandes, “Environmental land use conflicts in catchments: A major cause of amplified nitrate in river water,” Sci. Total Environ., vol. 548–549, pp. 173–188, Apr. 2016.

R. Kunkel, P. Kreins, B. Tetzlaff, and F. Wendland, “Forecasting the effects of EU policy measures on the nitrate pollution of groundwater and surface waters,” J Environ Sci (China), vol. 22, no. 6, pp. 872–877, 2010.

Y. Martínez and J. Albiac, “Nitrate pollution control under soil heterogeneity,” Land Use Policy, vol. 23, no. 4, pp. 521–532, Oct. 2006.

A. M. Fan, “Nitrate and Nitrite in Drinking Water: A Toxicological Review A2 - Nriagu,J.O.,” in Encyclopedia of Environmental Health, Burlington: Elsevier, 2011, pp. 137–145.

“Pollution Control Department,” 2012. [Online]. Available:

H. Choi, S. R. Al-Abed, and D. D. Dionysiou, “Chapter 3 - Nanostructured Titanium Oxide Film- and Membrane-Based Photocatalysis for Water Treatment A2 - Savage, Nora,” in Nanotechnology Applications for Clean Water, M. Diallo, J. Duncan, A. Street, and R. Sustich, Eds. Boston: William Andrew Publishing, 2009, pp. 39–46.

K. Nakata and A. Fujishima, “TiO2 photocatalysis: Design and applications,” Journal of Photochemistry and Photobiology C: Photochemistry Reviews, vol. 13, no. 3, pp. 169–189, Sep. 2012.

A.Chairuksa and S. Phiyanalinmat, “Studies on Phenol Photocon version by Ag/TiO2 photocatalyst,” presented at the Thailand Chemical Engineering and Applied Chemistry Conference 2011,2011.

H. Bel Hadjltaief, M. Ben Zina, M. E. Galvez, and P. Da Costa, “Photocatalytic degradation of methyl green dye in aqueous solution over natural clay-supported ZnO–TiO2 catalysts,” Journal of Photochemistry and Photobiology A: Chemistry, vol.315, pp. 25–33, Jan. 2016.

R. Supitcha, “Indigo Carmine Photodegradation by Titanium dioxide Photocatalyst with Sunlight and UV irradiation,” in 17th Regional Symposium on Chemical Engineering, Bangkok, Thailand, 2010.

X. Z. Li and F. B. Li, “Study of Au/Au3+-TiO2 Photocatalysts toward Visible Photooxidation for Water and Wastewater Treatment,” Environ. Sci. Technol., vol. 35, no. 11, pp. 2381–

, Jun. 2001.

X. Z. Li and F. B. Li, “Study of Au/Au3+-TiO2 Photocatalysts toward Visible Photooxidation for Water and Wastewater Treatment,” Environ. Sci. Technol., vol. 35, no. 11, pp. 2381–

, Jun. 2001.

I. Dobrosz-Gómez, M. Á. Gómez-García, S. M. López Zamora, E. GilPavas, J. Bojarska, M. Kozanecki, and J. M. Rynkowski, “Transition metal loaded TiO2 for phenol photo-degradation,” Comptes Rendus Chimie, vol. 18, no. 10, pp. 1170–1182, Oct. 2015.

S. N. R. Inturi, T. Boningari, M. Suidan, and P. G. Smirniotis, “Visible-light-induced photodegradation of gas phase acetonitrile using aerosol-made transition metal (V, Cr, Fe, Co, Mn, Mo, Ni, Cu, Y, Ce, and Zr) doped TiO2,”Applied Catalysis B: Environ mental, vol.144, pp. 333–342, Jan. 2014.

C. A. Lutterbeck, Ê. L. Machado, and K. Kümmerer, “Photodegradation of the antineoplastic cyclophosphamide: A comparative study of the efficiencies of UV/H2O2, UV/Fe2+/H2O2 and UV/TiO2 processes,” Chemosphere, vol. 120, pp. 538–546, Feb. 2015.

A. Zuorro, M. Fidaleo, and R. Lavecchia, “Response surface methodology (RSM) analysis of photodegradation of sulfonated diazo dye Reactive Green 19 by UV/H2O2 process,” J. Environ. Manage., vol. 127, pp. 28–35, Sep. 2013.

G. Halasi, T. Bánsági, and F. Solymosi, “Photocatalytic reduction of NO with ethanol on Au/TiO2,” Journal of Catalysis, vol. 325, pp. 60–67, May 2015.

S. Klosek and D. Raftery, “Visible Light Driven V-Doped TiO2 Photocatalyst and Its Photooxidation of Ethanol,” J. Phys. Chem. B, vol. 105, no. 14, pp. 2815–2819, Apr. 2001.