Room temperature synthesis of hydrated nickel(III) oxide and study of its effect on Cr(VI) ions removal and bacterial culture

Cr(VI) ion is a toxic inorganic affluent that causes carcinogenic effects on the human body. Another problem that requires immediate attention is the fouling of water borne metal surface by micro-organisms. The present study aims to suggest the synthesis of Ni 2 O 3 ·H 2 O nanoparticles and to inves...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2015-06, Vol.119 (4), p.1343-1354
Main Authors: Dey, Sayan, Bhattacharjee, Swarupananda, Bose, Raj Shekhar, Ghosh, Chandan Kr
Format: Article
Language:English
Subjects:
Adsorption
Bacteria
Characterization and Evaluation of Materials
Condensed Matter Physics
Heavy metals
Heterogeneity
Machines
Manufacturing
Nanoparticles
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Surface chemistry
Surfaces and Interfaces
Synthesis
Thin Films
Toxic
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Summary:Cr(VI) ion is a toxic inorganic affluent that causes carcinogenic effects on the human body. Another problem that requires immediate attention is the fouling of water borne metal surface by micro-organisms. The present study aims to suggest the synthesis of Ni 2 O 3 ·H 2 O nanoparticles and to investigate its heavy metal adsorption capacity and bacteriotoxicity in order to address the current global problems. Stable Ni 2 O 3 ·H 2 O nanoparticles having various particle sizes were synthesized using active halogenation of nickel(II) precursor at different temperatures. Phase purity was investigated by X-ray diffraction technique. Due to high surface area, surface heterogeneity and surface polarity, they show excellent adsorption affinity (up to 73.9 % removal capacity) of heavy metal ions like Cr(VI). Adsorption isotherms (Freundlich and Langmuir) are plotted for them. Kinetics of the adsorption process reveals it to be pseudo-first-order kinetic in nature. They are also found to be fairly toxic to bacterial subcultures. Maximum value of the minimum inhibitory concentration and minimum bactericidal concentration were found to be ~0.54 and 0.58 mg/l for particles synthesized at 70 °C. It was observed that Cr(VI) adsorption highly depends on the surface heterogeneity, while the bactericidal effect depends on the size of the nanoparticles so-prepared. Hence, the prepared particles could be used as a potential material for Cr(VI) ion removal and as an antifouling agent.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-015-9101-8