Kinetic investigation on sonocatalytic degradation of methylene blue in the presence of La:ZnO/GO
- سال انتشار: 1397
- محل انتشار: بیستمین کنگره شیمی ایران
- کد COI اختصاصی: IRANCC20_479
- زبان مقاله: انگلیسی
- تعداد مشاهده: 253
نویسندگان
Department of Chemistry, Faculty of Science, the University of Guilan, Rasht, Iran
Department of Chemistry, Faculty of Science, the University of Guilan, Rasht, Iran, Department of Water and Environmental engineering, The Caspian Sea basin research center,University of Guilan, Rasht, Iran
چکیده
Degradation of organic pollutants is a potential source of water protection in the world. According to different reports, the industries in many developed and developing countries discharge about 70% of their waste products directly and without any filtration into surface water [1]. In recent decades, the use of heterogeneous catalysts in the presence of eco-friendly source such as light and ultrasound radiation as eco-friendly technology has attracted global attention [2].The degradation of pollutant by ultrasound radiation requires a lot of energy and a complete degradation is rarely done; to overcome this restriction, using a heterogeneous catalyst with ultrasound radiation, which is called the sonocatalytic process, is recommended. Lanthanum doped Zinc oxide/graphene oxide (La:ZnO/GO) heterostructures were synthesized via a simple method. The obtained (La:ZnO/GO) Composites were characterized by the XRD, FT-IR, TEM, SEM, EDS, DRS analyses. The potential of La:ZnO/GO, has been explored as an effective catalyst for the sono-degradation of Methylene blue (MB). The effects of process parameters such as, catalyst dosage, initial dye concentration and irradiation time on the extent of sono-degradation efficiency have been investigated. The results show that process matched well with the Langmuir–Hinshelwood (L–H) kinetic model.کلیدواژه ها
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