Biological Synthesis of Cobalt Nanoparticles from Mangifera indica Leaf Extract and Application by Detection of Manganese (II) Ions Present in Industrial Wastewater

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Felicia Uchechukwu Okwunodulu
Helen Ogechi Chukwuemeka-Okorie
Francis Chijioke Okorie


This study was focused on the synthesis of cobalt nanoparticles using Mangifera indica leaf extract and the characterization of the particles via UV–Vis spectroscopy, XRD, FT-IR and SEM. The XRD results showed the formation of cobalt nanoparticles that was crystalline in nature, with an average size of 25—40 nm. The FT-IR analysis of the leaf extract reviewed some functional groups responsible for the reduction of cobalt ions to cobalt nanoparticles while the SEM indicates that the synthesised cobalt nanoparticles possess a cubic, pentagonal and irregular in shape with a smooth surface. Application of colloidal cobalt nanoparticles in detecting Mn2+ ions was discussed which indicated that the absorption of the Mn (II) ions decreased at increased concentration of Mn (II) ions indicating that Mn (II) ion can be detected even at a very low concentration. The minimum and maximum detection limit was found to be 5 and 25 mM of Mn (II) ions, respectively. The obtained results encourage the use of economical synthesis of cobalt nanoparticles in the development of nanosensors to detect the pollutants present in industrial effluents.

Mangifera indica, Mn2 , cobalt nanoparticle, industrial wastewater, colourimetric detection.

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Okwunodulu, F., Chukwuemeka-Okorie, H., & Okorie, F. (2019). Biological Synthesis of Cobalt Nanoparticles from Mangifera indica Leaf Extract and Application by Detection of Manganese (II) Ions Present in Industrial Wastewater. Chemical Science International Journal, 27(1), 1-8.
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Nilesh SP, Raman PY. A simple biogenic method for the synthesis of silver nanoparticles using syngonium podophyllum, an ornamental plant. MGM Journal of Medical Sciences. 2016;3: 111– 115.
Available: 10.5005/jp-journals-10036-1103

Marslin G, Siram K, Maqbool Q, Selvakesavan R, Kruszka D, Kachlicki P, Franklin G. Secondary metabolites in the green synthesis of metallic nanoparticles. Materials. 2018;11(6):940.

Singh S, Parihar P, Singh R, Singh VP, Prasad SM. Heavy metal tolerance in plants: Role of transcriptomics, proteomics, metabolomics and ionomics. Front. Plant Sci. 2016;6:1143.

Simão BN, Cristiano S, Alexandra S, Viviana M, Manuel A, Hernâni G, Fernanda F. An efficient antioxidant system and heavy metal exclusion from leaves make Solanum cheesmaniae more tolerant to Cu than its cultivated counterpart. Food Energy Secur. 2017;6:123–133.

Ahmed S, Ahmad M, Swami BL, Ikram S. A review on plants extract mediated synthesis of silver nanoparticles for antimicrobial applications: Green expertise. J. Adv. Res. 2016;7:17- 28.

Selvakumar P, Viveka S, Prakash S, Jasminebeaula S, Uloganathan R. Antimicrobial activity of extracellularly synthesized silver nanoparticles from marine derived Streptomyces rochei. Int. J. Pharma. Biological Sci. 2012;3:188- 197.

Khan I, Saeed K, Khan I. Nanoparticles: Properties, applications and toxicities. Arabian Journal of Chemistry. In press. Available:

Sha AL, Hassan RA, Alharbi AA, Alomavri T, Alamri H. Magnetic hyperthermia using cobalt ferrite nanoparticles: The influence of particle size. Int. J. Adv. Tech., 2017;8: 196 .

Stan M, Lung I, Soran ML, Leostean C, Popa A, Stefan M, Lazar MD, Opris O, Silipas TD, Porav AS. Removal of antibiotics from aqueous solutions by green synthesized magnetite nanoparticles with selected agro-waste extracts. Proc. Saf. Environ. Prot. 2017;107:357–372.

Igwe OU, Ekebo ES. Biofabrication of cobalt nanoparticles using leaf extract of Chromolaena odorata and their potential antibacterial application. Research Journal of Chemical Sciences. 2018;8(1):11-17.

Sithara R, Selvakumar P, Arun C, Anandan S, Sivashanmugam P. Economical synthesis of silver nanoparticles using leaf extract of Acalypha hispida and its application in the detection of Mn(II) ion. Journal of Advanced Reearch. 2017;8(6):561–568. Available: