Removal of organic dye compounds in water and wastewater samples based on covalent organic frameworks -titanium dioxide before analysis by UV-VIS spectroscopy

  • سال انتشار: 1400
  • محل انتشار: فصلنامه روش های تجزیه در شیمی محیط زیست، دوره: 4، شماره: 1
  • کد COI اختصاصی: JR_AMECJ-4-1_005
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 77
دانلود فایل این مقاله

نویسندگان

Aida Student Research Committee, Kerman University of M

Mehdi Ranjbar

Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran

چکیده

A simple and rapid microwave-assisted combustion method was developed to synthesize homogenous carbon nanostructures (HCNS). This research presents a new and novel nanocomposite structures for removal of methylene red (۲-(۴- Dimethylaminophenylazo) benzoic acid), methylene orange (۴-[۴-(Dimethylamino) phenylazo]benzenesulfonic acid sodium salt) and methylene blue (۳,۷-bis(Dimethylamino)phenazathionium chloride)with semi degradation-adsorption solid phase extraction (SDA-SPE) procedure before determination by UV-VIS spectroscopy. A covalent organic frameworks (COFs) with high purity were synthesized and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicated that the self-assembled carbon nanostructures (COFs) synthesized with the cost-effective method which was used as a novel adsorbent for adsorption of dyes after semi-degradation of methylene red, orange and blue (۱-۵ mg L-۱) as an organic dye by titanium dioxide (TiO۲) nanoparticales in presence of UV radiation. Based on results, the COFs/TiO۲ has good agreement with the Langmuir adsorption isotherm model with favorite coefficient of determination (R۲= ۰.۹۹۸۹). The recovery of dye removal based on semi-degradation/adsorption of COFs/TiO۲ and adsorption of COFs were obtained ۹۸.۷% and ۴۸.۳%, respectively (RSD less than ۵%). The method was validated by spiking dye to real samples.

کلیدواژه ها

Carbon nanostructures, Carbon organic frameworks, Dye removal, Semi degradation-adsorption solid phase extraction, Titanium dioxide, UV radiation

اطلاعات 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.