Volume 12, Issue 3 (10-2016)                   HSR 2016, 12(3): 335-341 | Back to browse issues page

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Nima Khoshzat, Masoud Rismanchian, Samira Barakat, Reza Keshavarzi. Photocatalytic Removal of Safranin-O Using Nickel-Doped Titanium Dioxide Nanoparticle-Coated Clinopetilolite Natural Zeolite. HSR 2016; 12 (3) :335-341
URL: http://hsr.mui.ac.ir/article-1-874-en.html
1- MSc Student, Department of Occupational Health Engineering, Student Research Committee, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran
2- Assistant Professor, Department of Occupational Health Engineering, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran Corresponding Author: Masoud Rismanchian, Email: rismanchian@hlth.mui.ac.ir
3- PhD Student, Department of Mineral Chemistry, School of Chemistry, University of Isfahan, Isfahan, Iran
Abstract:   (736 Views)
Background: Doping of some metals by photocatalysts and increasing of their surfaces result in the improvement of their photocatalytic activities. In this study, nickel dopant and Iranian natural zeolite were used to increase the efficiency of titanium dioxide nanoparticles for photocatalytic removal of azonium components from water.Methods: Ni-doped titanium-coated clinopetilolite zeolite surface with Ni/TiO2 ratios of0.17, 2, and 9, and pure TiO2 were made through sol-gel method and studied through analytical methods of X-ray powder diffraction (XRD), scanning electron microscope (SEM), and induced coupled plasma (ICP). Then, the efficiency of photocatalytic activities of different ratios of nickel dopant were investigated under ultra-violet (UV) ray in 25 and 50 mg/l concentrations of aqueous solution of safranin (phenazine compound).Findings: In the present study, TiO2 nanoparticles in the anatase and rutile phases obtained via sol-gel method were found at a frequency of 86.33% (34.44 nm particle size) and 13.67% (18 nm particle size). Nickel dopant samples exhibited better photocatalytic ‎efficiency in comparison with samples without nickel. In addition, the addition of nickel to samples caused a reduction in anatase phase frequency of samples and increase in photocatalytic reaction rate. N9TC sample, with photocatalytic removal efficiency of 93% and 79% for safranin ‎concentrations of 25 and 50 mg/l, had the highest photocatalytic removal efficiency among the samples.Conclusion: The use of Iranian clinopetilolite as a substrate is the most cost-effective way to increase photocatalytic activity. Moreover, adding nickel to titanium dioxide increased safranin removal efficiency. Increasing of the Ni/TiO2 ratio to 9% increased photocatalytic removal efficiency of samples in comparison with samples containing only pure titanium dioxide.
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Type of Study: Research | Subject: education health and promotion
Received: 2020/07/16 | Accepted: 2016/10/15 | Published: 2016/10/15

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