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Magnetic graphene oxide as adsorbent for the removal of lead(II) from water samples
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نویسنده
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nodeh h.r. ,wan ibrahim w.a. ,sanagi m.m.
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منبع
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jurnal teknologi - 2016 - دوره : 78 - شماره : 3-2 - صفحه:25 -30
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چکیده
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Magnetic fe3o4 nanoparticles were prepared on graphene oxide (fe3o4/go) in situ in a one step process. the obtained fe3o4/go was used as an adsorbent for the removal for pb(ii) from environmental water samples prior to flame atomic absorption spectroscopy measurement. the adsorption procedure was optimized as follows: 60 min adsorption time,50 ml sample volume,solution ph 4.5,and 25 mg adsorbent dosage. under the optimum conditions,the adsorption efficiency obtained was greater than 75% (c = 50 mg l-1). the adsorption isotherm of fe3o4@go magnetic adsorbent was studied for pb(ii) adsorption using two isotherm adsorption models namely langmuir and freundlich. the adsorption isotherm data fits well with langmuir isotherm (r2 = 0.9988) rather than with freundlich isotherm. the maximum adsorption capacity (qm) obtained was 86.2 mg g-1. the results signified that the prepared fe3o4/go nanocomposite has a great adsorptive ability towards the pb(ii) from environmental water samples. © 2016 penerbit utm press. all rights reserved.
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کلیدواژه
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Adsorption capacity; Graphene oxide; Langmuir isotherm model; Lead(II); Magnetic nanoparticles
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آدرس
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separation science and technology group,department of chemistry,universiti teknologi malaysia,utm,johor bahru,johor, Malaysia, separation science and technology group,department of chemistry,universiti teknologi malaysia,utm,johor bahru,johor, Malaysia, separation science and technology group,department of chemistry,universiti teknologi malaysia,utm,johor bahru,johor,malaysia,ibnu sina institute for scientific and industrial studies,universiti teknologi malaysia,utm,johor bahru,johor, Malaysia
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Authors
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