Adsorption of Methyl orange dye from Water solutions by carboxylate group functionalized multi-walled Carbon nanotubes
- سال انتشار: 1394
- محل انتشار: مجله بین المللی ابعاد نانو، دوره: 6، شماره: 3
- کد COI اختصاصی: JR_IJND-6-3_002
- زبان مقاله: انگلیسی
- تعداد مشاهده: 117
نویسندگان
Department of Chemistry, Shahre-Rey Branch, Islamic Azad University, Shahre-Rey, Tehran, Iran.
Department of Chemistry, Shahre-Qods Branch, Islamic Azad University, Shahre- Qods, Tehran, Iran.
Department of Chemistry, Shahre-Rey Branch, Islamic Azad University, Shahre-Rey, Tehran, Iran.
چکیده
The present study was carried out to investigate the potential of carboxylate group functionalized Multi-walled carbon nanotubes (MWCNT−COOH) adsorbent for the removal of Methyl orange (MO) textile dye from aqueous solutions. The effects of pH, shaking time and temperature on adsorption capacity were studied; the contact time to obtain equilibrium at ۲۹۸ ˚K was fixed at ۲۵ min. The effect of temperature on adsorption process was evaluated from ۲۹۸ to ۳۳۸ ˚K. Results showed that removal of Methyl orange increased with increasing contact time and decreased with increasing pH and temperature. For Methyl orange dye, the equilibrium data were best fitted to The Langmuir isotherm model. The adsorbent was characterized by infrared spectroscopy, and scanning electron microscopy. The pseudo-second-order kinetic model provided the best fit to the experimental data compared with The Elovich or pseudo-first-order or intra-particle diffusion kinetic adsorption models.کلیدواژه ها
Adsorption, Dye, MWCNT-COOH, Methyl orange, aqueous solutionsاطلاعات 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.