Semnan University of Medical Sciences

Research and Technology Vice Chancellor

Nassehinia, Hamidreza and Rahmani, Ayat and Ghaieny, Gholamreza and Mehdinia, Seyed Mahmoud (2016) Application of novel methods in environmental and health hazardous pollutants removal using nanophotocatalysts. Koomesh. pp. 309-316.

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    Abstract

    Photo catalytic technology has been studied extensively since 1970. A lot of researches have been done to understand the basic processes and structure and photo catalyst efficiency increasing, particularly for the prevention and control of water, air and soil pollution. This method is attractive because of the impossibility of removing many contaminants to conventional and common methods and using atmospheric oxygen as the oxidizer, the possibility of complete mineralization of organic matters to the H2O and CO2 and this process could be used under the environmental conditions. During the past year a lot of attention has been paid to the reaction of photo semiconductors, metal oxides such as Titanium dioxide, Zinc oxide, zirconium dioxide, tungsten trioxide and cadmium sulfide (photo catalytic oxidation). In this case, nanotechnology will find wide application in the future with the creation of a new approach in the photo catalyst industry. In nano -scale particles, not only area increases considerable, but also other effects on optical and electromagnetic properties will be increased. Studies showed that photo catalytic reaction rate increases with the particle size reducing and increasing in the oxidation – reduction potential, significantly. Even in some conditions, the energy emitted from the light source can be used in place of ultraviolet radiation and it could be the effective energy source for photo catalyst. Nano photo catalysts with the hydrophilic and strength nanostructured catalytic properties due to their high surface area to volume are one of the key technologies for environmental pollutant control. The nano photo catalyst technology could have used for applications in water filtration systems, waste and air for removal of resistant and dangerous contaminants properly. Keywords: Hazardous pollutants, Nano photo catalyst, Environment

    Item Type: Article
    Subjects: R Medicine > R Medicine (General)
    Divisions: Faculty of Medical Sciences > School of Medicine
    Depositing User: Mr Vahab Moshtaghi
    Date Deposited: 25 Jun 2017 13:17
    Last Modified: 25 Jun 2017 13:17
    URI: http://eprints.semums.ac.ir/id/eprint/1031

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