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application of response surface methodology for the photo degradation of dye using zno nanorods loaded on the activated carbon
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نویسنده
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kazemi hosein ,rajabi maryam ,fahimirad bahareh
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منبع
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شيمي كاربردي روز - 2020 - دوره : 14 - شماره : 53 - صفحه:21 -30
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چکیده
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In this work, zno with a nanorod morphology loaded on activated carbon (zno nrs-ac) was synthesized using the coprecipitation method for the photodegradation of malachite green (mg) under the uv light. the photocatalyst was characterized using various analytical techniques including xrd and fesem. the boxbehnken design (bbd) combined with the response surface methodology (rsm) was applied for the optimization of the influential parameters. the optimum values for the parameters involved were as follow: photocatalyst dosage,16 mg; mg concentration, 30 mg l1; and reaction time was 46 min. studying the effect of foreign ions on the performance of the photocatalytic process indicated the stability of zno nrsac in the photocatalytic degradation of mg. according to the langmuir–hinshelwood (l–h) kinetic model, the kinetic degradation of mg followed a pseudofirst order kinetic model.
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کلیدواژه
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zno nanorods ,activated carbon ,malachite green ,uv light ,box-behnken design ,kinetic model.
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آدرس
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semnan university, department of chemistry, iran, semnan university, department of chemistry, iran, semnan university, department of chemistry, iran
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Application of response surface methodology for the photo degradation of dye using ZnO nanorods loaded on the activated carbon
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Authors
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Rajabi Maryam
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Abstract
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In this work, ZnO with a nanorod morphology loaded on activated carbon (ZnO NRsAC) was synthesized using the coprecipitation method for the photodegradation of malachite green (MG) under the UV light. The photocatalyst was characterized using various analytical techniques including XRD and FESEM. The BoxBehnken design (BBD) combined with the response surface methodology (RSM) was applied for the optimization of the influential parameters. The optimum values for the parameters involved were as follow: photocatalyst dosage,16 mg; MG concentration, 30 mg L1; and reaction time was 46 min. Studying the effect of foreign ions on the performance of the photocatalytic process indicated the stability of ZnO NRsAC in the photocatalytic degradation of MG. According to the Langmuir–Hinshelwood (L–H) kinetic model, the kinetic degradation of MG followed a pseudofirst order kinetic model.
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Keywords
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