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Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification.

TEHRAN (FNA)- Researchers from Iran University of Science and Technology in association with their colleagues from Advanced Materials Research Center in Malaysia produced a new photocatalyst with very high efficiency to eliminate water pollutions.

Nanoparticles and nanopores play key role in the production of this product. The photocatalyst has been produced and investigated at laboratorial scale.

Dr. Babak Mazinani, one of the researchers, mentioned the investigated parameters, and said, "In this research, we tried to study the maximum value of efficiency for the final photocatalyst to eliminate water pollutions through physical and chemical methods by simultaneously controlling and changing initial materials, temperature, synthesis time, calcination method and some other parameters."

Taking into account the properties of the produced photocatalyst, results of the research can be used in industrial and home water purification devices to remove physical and microbial contaminators.

According to the researcher, the proposed photocatalyst has been produced in two forms of composite mesoporous silica and deposited with titania nanopowder. The difference in the two methods is that in deposition method, silicate porous structure was firstly produced, then titania particles were coated on it as a layer. In composite structure, however, titania source was introduced to the system during the synthesis of porous structure of silica. Both methods lead to the production of regular porous structures in forms of beehive and foam.

This study also presents a mechanism to determine how hydrothermal process affects the structure of pores and phases during the synthesis. the counter effects of synthesis parameters, including hexane additive, hydrothermal temperature, synthesis temperature and calcination method has also been studied on the structure and final performance of the product.

Results of the research have been published in Ceramics International, vol. 40, issue 8, Part A, 2014, pp. 11525-11532.

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Publication:FARS News Agency
Date:Oct 23, 2014
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