Amine Functionalized Kit-۶ Mesoporous Magnetite Nanocomposite as an Efficient Adsorbent for Removal of Ponceau ۴R Dye from Aqueous Solutions
- سال انتشار: 1395
- محل انتشار: مجله تحقیقات شیمی تجزیه و تجزیه زیستی، دوره: 3، شماره: 2
- کد COI اختصاصی: JR_ANALCH-3-2_012
- زبان مقاله: انگلیسی
- تعداد مشاهده: 112
نویسندگان
Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
Islamic Azad University, Rasht Branch, Rasht, Iran
Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran
چکیده
In this study, amine functionalized Kit-۶ silica mesoporous magnetite nanocomposite (NH۲-MMNC) was synthesized by chemical methods and used as an efficient and recoverable adsorbent for removal of Ponceau ۴R, as a toxic dye, from aqueous solutions. The synthesized nanocomposites were characterized by XRD, FT-IR, BET and SEM instruments. The effect of various experimental parameters on the dye removal efficiency was studied using Taguchi orthogonal array design (L۹ array) method and under optimum conditions (pH = ۲, adsorbent amount = ۸۰ mg, stirring time = ۳۰ min and without addition of salt) removal efficiency higher than ۹۸% was obtained.The kinetic studies showed rapid sorption dynamics by a second-order kinetic model with R۲=۰.۹۹۹۳ and qeq= ۵۸.۸ mg g-۱, suggesting chemisorption mechanism. Dye adsorption equilibrium data were fitted well to the Langmuir isotherm and the synthesized sorbent showed complete removal efficiency. The maximum monolayer capacity of the sorbent (Qmax , mg g-۱), and the Langmuir binding constant which is related to the energy of adsorption (KL, L mg-۱), were obtained as ۸۷.۷ and ۰.۴۰۷, respectively. The results of real samples show that the synthesized nanocomposite can be used as a recyclable and efficient adsorbent for removal of Ponceau ۴R anionic dye from aqueous solutions.کلیدواژه ها
Kit-۶ mesoporous magnetite nanocomposite, Amine-functionalized, Ponceau ۴R, Dye removalاطلاعات بیشتر در مورد COI
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