Abstract
The biosynthesis of Ag NPs and CuO NPs by Bacillus subtilis and for the first time Morganela morganii bacteria, respectively, was conducted to investigate the antibacterial activities against Streptococcus pneumoniae microbe. XRD analysis verified the formation of crystalline Ag and CuO particles. Furthermore, FESEM images demonstrated that the size of particles was less than 10nm. Finally, the antibacterial activity of NPs against the Gram-positive microbe (Streptococcus pneumoniae) indicated an enhancement by composition of Ag and CuO NPs.
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