{"title":"Comparative Study of Adsorption of Safranin o by TiO2/Activated Carbon and Chitosan/TiO2/Activated Carbon Adsorbents","authors":"Soheila Sharafinia, A. Farrokhnia, E. Ghasemian","doi":"10.22036/PCR.2021.274568.1889","DOIUrl":null,"url":null,"abstract":"This research is a comparative study of the surface chemistry and adsorptive characteristics of titanium dioxide nanoparticles on activated carbon (Ac/TiO2) and chitosan loaded on activated carbon (Ac/TiO2/Ch). For the first time, using three-fold composite of activated carbon prepared from Persian mesquite seeds, chitosan, and nanoparticles of titanium dioxide as an effective adsorbent for removing safranin o. X-ray Diffraction (XRD), scanning electron microscope (SEM), BET analysis, and thermogravimetric analysis (TGA) have been used to determine and confirm physicochemical variation during preparing and modifying activated carbon on both adsorbents. The results of XRD, SEM, and TGA are shown essential changes happened in porosity of the surface after the modification process. The Ac/TiO2 and Ac/TiO2/Ch adsorbents have been used to /remove safranin o as a cationic azo dye from an aqueous solution. The experimental data at different conditions were correlated by some famous kinetic and isotherm models. Extrapolated data displayed dye adsorption on the Ac/TiO2, and Ac/TiO2/Ch follows the pseudo-second-order kinetic model. High efficiency and sufficient adsorption capacity in safranin o removal suggested that Ac/TiO2/Ch could be successfully used as a good candidate in water filtration.","PeriodicalId":20084,"journal":{"name":"Physical Chemistry Research","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Chemistry Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22036/PCR.2021.274568.1889","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: 7
Abstract
This research is a comparative study of the surface chemistry and adsorptive characteristics of titanium dioxide nanoparticles on activated carbon (Ac/TiO2) and chitosan loaded on activated carbon (Ac/TiO2/Ch). For the first time, using three-fold composite of activated carbon prepared from Persian mesquite seeds, chitosan, and nanoparticles of titanium dioxide as an effective adsorbent for removing safranin o. X-ray Diffraction (XRD), scanning electron microscope (SEM), BET analysis, and thermogravimetric analysis (TGA) have been used to determine and confirm physicochemical variation during preparing and modifying activated carbon on both adsorbents. The results of XRD, SEM, and TGA are shown essential changes happened in porosity of the surface after the modification process. The Ac/TiO2 and Ac/TiO2/Ch adsorbents have been used to /remove safranin o as a cationic azo dye from an aqueous solution. The experimental data at different conditions were correlated by some famous kinetic and isotherm models. Extrapolated data displayed dye adsorption on the Ac/TiO2, and Ac/TiO2/Ch follows the pseudo-second-order kinetic model. High efficiency and sufficient adsorption capacity in safranin o removal suggested that Ac/TiO2/Ch could be successfully used as a good candidate in water filtration.
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.