Home > Press > New Nanocomposites Help Elimination of Toxic Dyes
Abstract:
Iranian researchers from Tabriz University in association with researchers from Ataturk University in Turkey produced a composite nanocatalyst in a research project.
New Nanocomposites Help Elimination of Toxic Dyes
Tehran, Iran | Posted on October 15th, 2014 Results of the research have applications in various industries, including textile and pharmaceutical industries in the purification of industrial wastewater.
According to Dr. Alireza Khatayee, a member of the Scientific Board of Tabriz University, titanium dioxide nanoparticles stabilized on montmorillonite (MMT) bed were used in the production of the nanocomposite. The composite nanocatalyst has higher efficiency in the removal of contaminators than pure titanium dioxide nanoparticles.
Results of the research showed that stabilization of titanium dioxide nanoparticles on montmorillonite bed reduces the diameter of nanoparticles. Evaluations confirmed that the diameter of titanium dioxide nanoparticles has decreased from 70 to 50 nm after the stabilization on montmorillonite particles. Moreover, over 80% of the sample dye was eliminated from polluted water in only 90 minutes through sonocatalytic process in the presence of the produced nanocomposite. Generally speaking, it can be concluded that the use of nanocomposite results in a decrease in cost but it increases the rate of contaminator degradation.
"Since the raw materials are cheap and titanium dioxide/montmorillonite (TiO2/Montmorillonite) nanocomposite is produced through a very simple method, we hope to produce it at industrial scale to be used in the purification of dying industry wastewater or in the removal of medical contaminators," Dr. Khatayee continued.
Also in this research, it was shown that the increase in the amount of nanocatalyst and the power of ultraviolet waves modify the purification efficiency. In addition, the best pH value for the process was at neutral range.
Results of the research have been published in Ultrasonics Sonochemistry, vol. 22, issue 1, 2015, pp. 404-411.
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