Synthesis of GO-Cu-BTC graphene oxide at the Green and in situ under solvent-free conditions by the mechanochemical methods and evaluation of kinetic and isotherm properties of cadmium removal

Subject Areas :

hamideh hamzeh ali ¹ (Assistant Prof. of Analytical Chemistry, Department of chemistry, East Tehran Branch, Islamic Azad University, Tehran, Iran)
sara mashkouri ² (Ph.D of Organic Chemietry, Research incubator at the Iran University of Science and Technology, Tehran, Iran)
beheshteh sohrabi nazari ³ (Associate Prof. of Physical Chemistry, Iran University of Science and Technology, Tehran, Iran)
mohammad reza naimi jamal ⁴ (Professor of Organic Chemistry, Iran University of Science and Technology, Tehran, Iran)
leila panahi ⁵ (. Ph.D of Organic Chemietry, Iran University of Science and Technology, Tehran, Iran)

Received: 2019-10-23 Accepted : 2020-01-21 Published : 2020-08-22

Keywords: Cadmium, Adsorption Isotherm, Removal efficiency, GO-Cu-BTC, Kinetics Isotherm,

Abstract :

In this research, GO-Cu-BTC nanocomposite was prepared at the green, in situ under solvent-free by using the mechanical method without purification. XRD and FESEM demonstrated the structure of nanocomposite. In order to investigate the application of the nanocomposites synthesized in green conditions, cadmium heavy metal removal was studied. Here, kinetic and isotherm studies of metal removal were performed and the concentration of cadmium ions was measured by atomic absorption spectrometry. The results showed that the adsorption capacity of the cadmium by the nanocomposite adsorbent was dependent on parameters such as pH and reaction time. Optimal conditions showed that 6 mg of nanocomposite removed 94% of water-soluble cadmium at pH 8. The results showed that the isotherm data followed the Langmuir model. In this study, it is found that GO-Cu-BTC has a high ability to adsorb cadmium and can be used as a low-cost adsorbent.

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