Volume 4, Issue 43 p. 12708-12718
Full Paper

Removal of Copper(II) and Zinc(II) Ions in Water on a Newly Synthesized Polyhydroquinone/Graphene Nanocomposite Material: Kinetics, Thermodynamics and Mechanism

Prof. Imran Ali

Corresponding Author

Prof. Imran Ali

Department of Chemistry, College of Sciences, Taibah University, Al-Medina Al-Munawara – 41477, Saudi Arabia

Department of Chemistry, Jamia Millia Islamia (Central University), Jamia Nagar, New Delhi, 110025 India

Search for more papers by this author
Dr. Alexandr E. Burakov

Dr. Alexandr E. Burakov

Department of Technology and Methods of Nanoproduct Manufacturing, Tambov State Technical University, 106 Sovetskaya Str., Tambov, 392000 Russian Federation

Search for more papers by this author
Dr. Alexandr V. Melezhik

Dr. Alexandr V. Melezhik

Department of Technology and Methods of Nanoproduct Manufacturing, Tambov State Technical University, 106 Sovetskaya Str., Tambov, 392000 Russian Federation

Search for more papers by this author
Mr. Alexandr V. Babkin

Mr. Alexandr V. Babkin

Department of Technology and Methods of Nanoproduct Manufacturing, Tambov State Technical University, 106 Sovetskaya Str., Tambov, 392000 Russian Federation

Search for more papers by this author
Dr. Irina V. Burakova

Dr. Irina V. Burakova

Department of Technology and Methods of Nanoproduct Manufacturing, Tambov State Technical University, 106 Sovetskaya Str., Tambov, 392000 Russian Federation

Search for more papers by this author
Ms. Elena A. Neskomornaya

Ms. Elena A. Neskomornaya

Department of Technology and Methods of Nanoproduct Manufacturing, Tambov State Technical University, 106 Sovetskaya Str., Tambov, 392000 Russian Federation

Search for more papers by this author
Dr. Evgeny V. Galunin

Dr. Evgeny V. Galunin

Department of Technology and Methods of Nanoproduct Manufacturing, Tambov State Technical University, 106 Sovetskaya Str., Tambov, 392000 Russian Federation

Search for more papers by this author
Prof. Alexey G. Tkachev

Prof. Alexey G. Tkachev

Department of Technology and Methods of Nanoproduct Manufacturing, Tambov State Technical University, 106 Sovetskaya Str., Tambov, 392000 Russian Federation

Search for more papers by this author
Dr. Denis V. Kuznetsov

Dr. Denis V. Kuznetsov

Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology 'MISiS', 4 Leninsky Ave., Moscow, 119991 Russian Federation

Search for more papers by this author
First published: 26 November 2019
Citations: 95

Graphical Abstract

An effective polyhydroquinone/graphene nanocomposite was developed to remove Cu(II) and Zn(II) metal ions in water. The composite nanomaterial was characterized by FT-IR, SEM, TEM, XRD, Raman spectroscopy, and thermo-gravimetry. The adsorption capacity of Cu(II) and Zn(II) metal ions were 40.9 and 24.8 μgg−1, respectively. The sorption followed Langmuir, Freundlich, Tempkin and D−Rs models. The process of adsorption was successfully described by pseudo-second-order model, thereby indicating the chemical nature of the main adsorption mechanism.

Abstract

An effective polyhydroquinone/graphene nanocomposite was developed to remove Cu(II) and Zn(II) metal ions in water. The composite nanomaterial was characterized by FT-IR, SEM, TEM, XRD, Raman spectroscopy, and thermo-gravimetry. The surface of the material was heterogeneous with 10–20 nm particle size. The adsorption capacity of Cu(II) and Zn(II) metal ions were 40.9 and 24.8 μgg−1, respectively. The sorption followed Langmuir, Freundlich, Tempkin and D−Rs models. The process of adsorption was successfully described by pseudo-second-order model, thereby indicating the chemical nature of the main adsorption mechanism. Thus, it can be argued that the adsorption proceeded in a mixed-diffusion mode, with a significant contribution of a large number of high affinity active sites located on the adsorbent surface. The uptake time was 60 and 15 minutes for Cu(II) and Zn(II) at pH 6.0; indicating fast hydro-friendly nature and making the method applicable to solve water pollution in real life problems. Therefore, the reported method may be used to remove Cu(II) and Zn(II) metal ions in any water resource.

Conflict of interest

The authors declare no conflict of interest.