Preparation and investigation of M-MWCNT nanocomposite by hydrothermal method for Pb(II) ions adsorption
- سال انتشار: 1401
- محل انتشار: مجله بین المللی ابعاد نانو، دوره: 13، شماره: 4
- کد COI اختصاصی: JR_IJND-13-4_005
- زبان مقاله: انگلیسی
- تعداد مشاهده: 284
نویسندگان
Department of Chemical Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran.
Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran.
Department of Chemical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran.
Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran.
Chemical Engineering Department, Hakim Sabzevari University, Sabzevar, Iran.
Chemical Engineering Department, Hakim Sabzevari University, Sabzevar, Iran.
چکیده
In this present work, MWCNTs modified NiFe۲O۴ NPs (M-MWCNT) were successfully fabricated based on a hydrothermal route, and then utilized to Pb(II) sorption from an aqueous solution. The M-MWCNT was characterized and analyzed by SEM, TEM, FTIR, XRD, and VSM techniques. TEM image demonstrated that the size of NiFe۲O۴ nanoparticles in the structure of MWCNT was ۲۰ nm. VSM results indicated that the M-MWCNT with saturation magnetization (Ms) value of ۷ emu/g would have a fast magnetic response. According to X-ray data the average crystal sizes of the pure NiFe۲O۴ and M-MWCNT are ۲۱.۶۲ and ۷.۲۵ nm, respectively. The sorption kinetics, isotherms, thermodynamic and regeneration performance for lead ((Pb(II)) ions were evaluated. The M-MWCNT can effectively remove Pb(II) from aqueous solution at optimum pH of ۵.۵. Based on the Langmuir model, the maximum saturated adsorbed amount (qmax) of Pb(II) was up to ۸۵.۱۲ mg/g. The kinetic characteristic was appropriate for pseudo ۱st order model expression, and the isothermal characteristic can be described via Longmuir model. The data obtained from the thermodynamic study show that the Pb(II) sorption using M-MWCNT nanocomposite was a spontaneous, exothermic and physisorption process with a good regeneration performance.کلیدواژه ها
NiFe۲O۴NPs, nanocomposite, MWCNT, Lead (II) sorption, qmaxاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.