Comparative Study of Adsorption of Safranin o by TiO2/Activated Carbon and Chitosan/TiO2/Activated Carbon Adsorbents

IF 1.4 Q3 CHEMISTRY, MULTIDISCIPLINARY Physical Chemistry Research Pub Date : 2021-12-01 DOI:10.22036/PCR.2021.274568.1889
Soheila Sharafinia, A. Farrokhnia, E. Ghasemian
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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.
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TiO2/活性炭与壳聚糖/TiO2/活性炭吸附红花素o的比较研究
本研究对比研究了二氧化钛纳米颗粒在活性炭(Ac/TiO2)和壳聚糖负载在活性炭(Ac/TiO2/Ch)上的表面化学性质和吸附特性。首次采用波斯豆科植物种子、壳聚糖和二氧化钛纳米颗粒制备的三层复合活性炭作为有效的吸附剂去除红花色素o,通过x射线衍射(XRD)、扫描电镜(SEM)、BET分析和热重分析(TGA)确定了两种吸附剂在制备和改性活性炭过程中的物理化学变化。XRD、SEM和TGA分析结果表明,改性后表面孔隙率发生了明显变化。研究了Ac/TiO2和Ac/TiO2/Ch吸附剂对水溶液中作为阳离子偶氮染料的红花素o的去除效果。用一些著名的动力学模型和等温线模型对不同条件下的实验数据进行了关联。外推数据显示Ac/TiO2对染料有吸附作用,Ac/TiO2/Ch符合准二级动力学模型。Ac/TiO2/Ch可作为水过滤的良好候选材料。
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来源期刊
Physical Chemistry Research
Physical Chemistry Research CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
2.70
自引率
8.30%
发文量
18
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.
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