کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5157200 | 1500589 | 2017 | 42 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of cellulose-goethite composites and their adsorption properties with roxarsone
ترجمه فارسی عنوان
سنتز و خصوصی سازی کامپوزیت های سلولز گوتیت و خواص جذب آنها با روکش دارون
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
This study reports on the preparation of goethite and its supported forms onto cellulose as adsorbents for the adsorption of 4-hydroxy-3-nitrobenzene arsenic acid (roxarsone) from aqueous solution. Goethite nanoparticles (NPs) and their cellulose composites were prepared with good yield â¼97%, and characterized by thermal gravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, nitrogen gas adsorption/desorption (BET), powder X-ray diffraction (pXRD) and transmission electron microscopy (TEM). The monolayer uptake (Qm) capacity of goethite was 19.2Â mg/g while the Qm value for 30% Fe coated goethite-cellulose (GC) was 17.4Â mg/g. The greater content and dispersion of goethite NPs contribute active sites on the cellulose surface to yield greater uptake of roxarsone for the Fe loaded GC composites. GC composites are a cost effective and efficient way to disperse goethite NPs onto cellulose surface for the enhanced adsorption of roxarsone. The GC composites reduce NP leaching whilst maintaining comparable uptake of arsenic species at 30% iron oxide doping that rival the adsorption properties of the pure mineral phase of goethite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 169, 1 August 2017, Pages 282-294
Journal: Carbohydrate Polymers - Volume 169, 1 August 2017, Pages 282-294
نویسندگان
Dexu Kong, Lee D. Wilson,