金属掺杂沸石纳米吸附剂吸附亚甲基蓝的动力学、等温线和热力学研究

IF 1.4 Q3 CHEMISTRY, MULTIDISCIPLINARY

Physical Chemistry Research Pub Date : 2021-03-01 DOI:10.22036/PCR.2020.233844.1781

Hadi Niaei, Mohammad Rostamizadeh, Farid Maasumi, Jaber Darabi

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引用次数: 4

摘要

本文研究了改性高硅沸石纳米吸附剂对阳离子染料的吸附性能。该载体采用水热法制备，并掺杂铁。采用XRD、FT-IR、N2吸附-脱附、FE-SEM等表征了纳米吸附剂的形貌、结构和结构性能。结果表明，该纳米吸附剂具有较高的比表面积、结晶度和孔隙体积。在pH为9.0、染料浓度为10 mg L-1、温度为25℃、纳米吸附剂用量为1.0 gL-1的条件下，吸附量最大(6.09 mg g-1)。亚甲基蓝吸附动力学为准二级动力学，相关系数高(R2=0.99)。吸附过程符合Langmuir模型，为放热自发过程。通过废水处理，证实了金属掺杂高硅分子筛ZSM-5是一种高效的吸附阳离子染料的纳米吸附剂。

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Kinetic, Isotherm, and Thermodynamic Studies of Methylene Blue Adsorption over Metal-doped Zeolite Nano-adsorbent

In this work, the adsorption of cationic dye by the modified high silica zeolite nano-adsorbent was investigated. The support was prepared hydrothermally and doped by the iron. The morphology, structure, and textural properties of the nano-adsorbents were characterized using XRD, FT-IR, N2 adsorption-desorption, and FE-SEM. The results showed that the nano-adsorbent had a high specific surface area, crystallinity, and pore volume. The maximum adsorption (6.09 mg g-1) was at the pH level of 9.0, 10 mg L-1 of dye concentration, T=25 °C, and 1.0 gL-1 of nano-adsorbent dosage. The kinetic of Methylene blue (MB) adsorption was pseudo-second-order with the high correlation factor (R2=0.99). The MB adsorption was in line with the Langmuir model, as an exothermic and spontaneous process. The results confirmed that the metal-doped high silica ZSM-5 zeolite was an efficient nano-adsorbent for the cationic dye adsorption through wastewater treatment.

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来源期刊

Physical Chemistry Research CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

2.70

自引率

8.30%

发文量

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.