{"title":"Adsorption and Removal Characterization of Nitrobenzene by Graphene Oxide Coated by Polythiophene Nanoparticles","authors":"S. Mousavi, A. Babapoor, S. Hashemi, B. Medi","doi":"10.22036/PCR.2020.208780.1700","DOIUrl":null,"url":null,"abstract":"Nitrobenzene (NB) has a wide range of usages as a chemical intermediate and also as a dye in printing applications. Despite its advantages, NB is harmful to human and animals and hence is an environmental pollutant. In this research, NB removal from water was studied via adsorption on graphene oxide (GO) coated by polythiophene (PT) nanoparticles. The resulting nanocomposite was characterized by XRD, FTIR, BET, and SEM. While the FTIR tests proved successful incorporation of PT, the SEM images displayed a relatively larger surface area compared to other studies. The BET analysis confirms this finding by reporting the surface area as 917.8 m2/g for the adsorbent. The adsorption mechanism was assessed by the Langmuir and Freundlich isotherms. The results show that the Freundlich isotherm better describes the adsorption process compared to the Langmuir isotherm. On the other hand, the pseudo-second-order kinetic model better regresses the experimental results, which indicates a chemical adsorption mechanism. The adsorption-desorption behavior of the samples was evaluated at optimized pH, time, adsorbent dosage, and eluent type. The results showed that the synthesized nanocomposite can efficiently remove NB from solutions in the pH range of 5.0 to 7.0, with the maximum adsorption capacity of 15.6 mg/g.","PeriodicalId":20084,"journal":{"name":"Physical Chemistry Research","volume":"8 1","pages":"225-240"},"PeriodicalIF":1.4000,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Chemistry Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22036/PCR.2020.208780.1700","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 11
Abstract
Nitrobenzene (NB) has a wide range of usages as a chemical intermediate and also as a dye in printing applications. Despite its advantages, NB is harmful to human and animals and hence is an environmental pollutant. In this research, NB removal from water was studied via adsorption on graphene oxide (GO) coated by polythiophene (PT) nanoparticles. The resulting nanocomposite was characterized by XRD, FTIR, BET, and SEM. While the FTIR tests proved successful incorporation of PT, the SEM images displayed a relatively larger surface area compared to other studies. The BET analysis confirms this finding by reporting the surface area as 917.8 m2/g for the adsorbent. The adsorption mechanism was assessed by the Langmuir and Freundlich isotherms. The results show that the Freundlich isotherm better describes the adsorption process compared to the Langmuir isotherm. On the other hand, the pseudo-second-order kinetic model better regresses the experimental results, which indicates a chemical adsorption mechanism. The adsorption-desorption behavior of the samples was evaluated at optimized pH, time, adsorbent dosage, and eluent type. The results showed that the synthesized nanocomposite can efficiently remove NB from solutions in the pH range of 5.0 to 7.0, with the maximum adsorption capacity of 15.6 mg/g.
期刊介绍:
The motivation for this new journal is the tremendous increasing of useful articles in the field of Physical Chemistry and the related subjects in recent years, and the need of communication between Physical Chemists, Physicists and Biophysicists. We attempt to establish this fruitful communication and quick publication. High quality original papers in English dealing with experimental, theoretical and applied research related to physics and chemistry are welcomed. This journal accepts your report for publication as a regular article, review, and Letter. Review articles discussing specific areas of physical chemistry of current chemical or physical importance are also published. Subjects of Interest: Thermodynamics, Statistical Mechanics, Statistical Thermodynamics, Molecular Spectroscopy, Quantum Chemistry, Computational Chemistry, Physical Chemistry of Life Sciences, Surface Chemistry, Catalysis, Physical Chemistry of Electrochemistry, Kinetics, Nanochemistry and Nanophysics, Liquid Crystals, Ionic Liquid, Photochemistry, Experimental article of Physical chemistry. Mathematical Chemistry.