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2020 Volume 11 Issue 1

Adsorption and Optical Color Decomposition of Congo Red Blue Solution Using Graphene Oxide / MnO2 Nano Composite


Amir Fadhil Dawood AL-Niaimi, Raghad Laith Kamel
Abstract

The Nanocomposites consist of graphene oxide (GO) nanosheets and Magnesium oxide (MnO2), with a weight ratio of 1:1 to the synthesized GO /MnO2. The synthesized samples were characterized using FT-IR, SEM. The adsorption of Congo red (CR) dye from aqueous solution onto GO/MnO2 NCs as adsorbent using the batch method were investigated under different laboratory conditions such as contact time, dose of GO/MnO2, temperature and initial concentration of CR dye. Adsorption isotherms are used to test adsorption data for Langmuir, Freundlich, Dubinin, and Temkin, because it is suitable to Temkin isotherm. Thermodynamic functions (Δ ºH, Δ ºG, ΔºS ) of the adsorption were calculated, which show the adsorption endothermic process and the Δ ºG values were negative, meaning  that the adsorption occurred spontaneously. The ΔºS values were positive, meaning that the movement of the dye molecules is unrestricted. The Kinetic data were proportional to -pseudo-second order. We also investigate the photodegradation of  CRdyeon GO/MnO2 under different conditions (with and without sunlight, GO/MnO2 and light source), we calculated  Photodegradation percent and kinetic photodegradation. The bestcondition for photodegradation was GO/MnO2NCs + CR + O2 gas + Vis lamplight.


How to cite this article
AL-Niaimi A F D & Kamel R L. Adsorption and Optical Color Decomposition of Congo Red Blue Solution Using Graphene Oxide / MnO2 Nano Composite. J Biochem Technol 2020;11(1):74-84
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J BIOCHEM TECH
J BIOCHEM TECH
Journal of Biochemical Technology is a peer reviewed International Journal published by the Sevas Publishing on behalf of the Biochemical Technology Society, a Registered Charity Organization from India

AREA OF INTEREST
AREA OF INTEREST
Areas of high interest, cover new advances in enzymatic and protein mechanims; applied molecular genetics and biotechnology; genomics and proteomics; metabolic; medical, environmental, food and agro biotechnology.

FOCUS AND SCOPE
FOCUS AND SCOPE
Journal Of Biochemical Technology” Provides A Medium For The Rapid Publication Of Full-Length Articles, Mini-Reviews Of New And Emerging Products And Short Communications On All Aspects Of ...

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This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge. Keywords include, Biochemical Research: Endo/exocytosis, Trafficking, Membrane Biology, Cell Migration, Cell-Matrix Organelle Biogenesis, Cytoskeleton Proteolysis, Cell Death, Cell Cycle, Cancer, Cell Growth/Death, Differentiation, Drug Targets, Gene Therapy, Models of Disease, Proteomics, Stem Cells, Bioenergetics, Mitochondria, Free Radicals, Redox Signaling, Ion Transport/Channels, Oxidative