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a visible light driven doped tio2 nanophotocatalyst: preparation and characterization
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نویسنده
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zakeri s. m. e. ,asghari m. ,feilizadeh m. ,vosoughi m.
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منبع
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international journal of nano dimension - 2014 - دوره : 5 - شماره : 4 - صفحه:329 -335
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چکیده
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A useful nanophotocatalyst (la,s-tio2) was prepared by a sol-gel method and characterized by uv–vis diffuse reflectance spectroscopy (drs), x-ray diffraction (xrd), photoluminescence emission spectroscopy (pl) and scanning electron microscopy (fesem). the results showed that the la,s-tio2, which calcined at 550 °c, contained only anatase phase and its crystal size was 23 nm. in addition, the fesem analysis indicates that the la,s-tio2 nano particles with diameter of 20 to 25 nm could have a good dispersion in solution. in order to evaluate of activity of the modified synthesized photocatalyst (la,s-tio2), comparison between modified synthesized tio2 (la,s-tio2) and pure synthesized tio2 for degradation of methyl orange was investigated. it was found that the modified synthesized photocatalysis (la,s-tio2) has much higher photocatalytic activity than undoped tio2 for the degradation of contamination.
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کلیدواژه
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nanophotocatalyst ,la ,s-tio2 ,methyl orange ,contamination ,synthesized ,sol-gel method
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آدرس
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university of kashan, department of engineering, separation processes research group (sprg), ایران, university of kashan, energy research institute, department of engineering, separation processes research group (sprg), ایران, sharif university of technology, chemical and petroleum engineering department, ایران, sharif university of technology, chemical and petroleum engineering department, ایران
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Authors
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