کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5410817 1506567 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Efficient removal of phenol and aniline from aqueous solutions using graphene oxide/polypyrrole composites
ترجمه فارسی عنوان
حذف کارآمد فنل و آنیلین از محلول های آبی با استفاده از کامپوزیت های گرافن اکسید / پلی پیررول
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی


- GO/PPy composites present excellent sorption capacity for phenol and aniline.
- Sorption of phenol and aniline on GO/PPy composites obeyed Langmuir model.
- Phenol and aniline sorption on GO/PPy composites was an endothermic and spontaneous process.
- GO/PPy composites could be regenerated by ethanol and cycling reusablility.

A novel approach was developed to fabricate graphene oxide/polypyrrole (GO/PPy) composites via dielectric barrier discharge (DBD) plasma technique in nitrogen and room temperature conditions, and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) in details. The sorption of phenol and aniline on the GO/PPy composites from aqueous solutions was investigated as a function of contact time, solid content, pH and initial concentrations of sorbates. The sorption capacities of phenol and aniline on the GO/PPy composites were much higher than those of phenol and aniline on many of today's materials. The sorption of phenol and aniline on GO/PPy composites obeyed the Langmuir model, and was mainly attributed to ion exchange, π-π electron donor-acceptor (EDA) interaction, hydrophobic interaction and Lewis acid-base interaction. The thermodynamic parameters calculated from the temperature-dependent sorption isotherms suggested that phenol and aniline sorption on GO/PPy composites was an endothermic and spontaneous process. Moreover, GO/PPy composites could be regenerated through the phenol and aniline desorption by ethanol, and cycling reused without obvious decrease of sorption capacity. All these results indicated that the GO/PPy composites were suitable materials for the preconcentration of phenol and aniline from aqueous solutions in environmental pollution management.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 203, March 2015, Pages 80-89
نویسندگان
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