Open AccessGreen synthesis of cobalt oxide nanoparticles for potential biological applications
Author(s) -
Muhammad Hafeez,
Ruzma Shaheen,
Bilal Akram,
ZainulAbdin,
Sirajul Haq,
Salahudin Mahsud,
Shaukat Ali,
Rizwan Taj Khan
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab70dd
Subject(s) - cobalt , nuclear chemistry , fourier transform infrared spectroscopy , nanoparticle , transmission electron microscopy , antibacterial activity , escherichia coli , bacillus subtilis , scanning electron microscope , chemistry , materials science , nanotechnology , bacteria , inorganic chemistry , chemical engineering , biochemistry , biology , gene , engineering , composite material , genetics
Cobalt oxide nanoparticles (Co 3 O 4 -Nps) have many applications and now a days the green methods of synthesis of these NPs are preferred over other methods because of associated benefits. In this study, Co 3 O 4 -Nps were synthesized by using leaves extract of Populus ciliata (safaida) and cobalt nitrate hexa hydrate as a source of cobalt. The synthesized NPs were analyzed by different techniques such as fourier transform spectroscopy (FTIR), x-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Antibacterial activities of the synthesized Co 3 O 4 -Nps were evaluated against gram negative and gram positive bacteria and found active against Escherichia coli (E. coli), Klebseilla pneumonia (K. pneumonia), Bacillus subtillus (B.subtillus) and Bacillus lichenifermia (B. lichenifermia). The activity results were analyzed statistically by one-way ANOVA, with ‘Dunnett’s Multiple Comparison Test’. The maximum mean activity (21.8 ± 0.7) was found for B. subtilis and minimum mean activity (14.0 ± 0.6) was observed for E. coli.