Mounaguru Sindhudevi; Subramanian Srinivasan; Balakrishnan Karthekiyan; Arumugam Muthuvel
Abstract
In the present studies, cytotoxicity evaluation of camphor-mediated bimetallic nanoparticles has been done. The IC50 value of Te combined Se, Zr, and Ce bimetallic nanoparticles are 18.0, 16.0, 175.4,38.9 µg/ml respectively. A maximum proportion of cell activity attained at 16 µg/ml reveals ...
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In the present studies, cytotoxicity evaluation of camphor-mediated bimetallic nanoparticles has been done. The IC50 value of Te combined Se, Zr, and Ce bimetallic nanoparticles are 18.0, 16.0, 175.4,38.9 µg/ml respectively. A maximum proportion of cell activity attained at 16 µg/ml reveals the size-dependent anticancer property of TeSe, Tezr, and TeCe BNPs towards the MCF -7 Cell line and SeZr towards skin cancer cell lines. The surface morphology with particle size and optical attribute of camphor-mediated BNPs can be analyzed by various studies such as Uv- visible spectroscopy, XRD, AFM, SEM –EDX, HR-TEM, and XPS study the size of the SeZr BNPs was observed to less than 100 nm, which conforms to the bioactive nature of bimetallic nanoparticles. In addition, the photocatalytic behaviour of camphor-mediated SeZr BNPs has been tested by using methylene blue dye under natural sunlight and UV illumination. Hence, the result of the studies shows a maximum of 87% degradation within 60 min for same concentration solution at PH 9 which can be due to increases in hydroxyl ion concentration. Further, a comparative study in catalytic activity on photo degradation of MB dye with an optimized sample was carried out under UV irradiation. The reusability test was performed after 60 min degradation, implying the Photocatalyst’s stability. Further, pseudo -first- order kinetic model was performed for obtained data. This is the first report on catalytic degradation using camphor-mediated SeZr BNPs to effective removal of pollutants in waste water streams
D Kamarajan; Benny Anburaj; V Porkalai; A Muthuvel; G Nedunchezhian; N Mahendran
Abstract
The current study aimed to synthesize nanoparticles of Zinc oxide (ZnO) using the extract of Acalypha indica leaves and their photocatalyst degradation and antibacterial properties were also measured. The biosynthesized nanoparticles were analyzed using XRD, UV-visible, FT-IR, and SEM with EDAX, DLS, ...
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The current study aimed to synthesize nanoparticles of Zinc oxide (ZnO) using the extract of Acalypha indica leaves and their photocatalyst degradation and antibacterial properties were also measured. The biosynthesized nanoparticles were analyzed using XRD, UV-visible, FT-IR, and SEM with EDAX, DLS, PL, and Zeta potential analysis. The synthesized nanoparticles had a mean size of 16 nm measured by XRD which was highly pure, and their spherical shape was confirmed by SEM. The UV-visible confirmed that ZnO nanoparticles have a direct band gap energy is 3.34 eV. The measured zeta size and potential of synthesized nanoparticles were 46 nm and -27 mV, respectively, determined by the DLS technique can be considered moderately stable colloidal solutions. The FT-IR analysis confirmed the presence of functional groups in the leaf extract and the ZnO nanoparticles. The biosynthesized ZnO nanoparticles have a homogeneous spherical morphology and the average particle is 35 nm. The PL analyses performed on synthesized nanoparticles showed a sharp blue band at 362 nm, which was attributed to the defects of structure in ZnO crystals. During natural sunlight illumination, ZnO nanoparticles demonstrated notable degradation of the dye methyl blue (MB). At 90 min of illumination, the degradation efficiency achieved was 96 %. Antibacterial properties were observed for synthesized nanoparticles against four bacterial strains, including Bacillus subtilis, Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. The highest zone of inhibition was observed against Escherichia coli (25.2 mm). Overall, these studies indicate that Acalypha indica is a good sell for planting, and has the greatest chance of being used to develop nanoparticles for protection against environmental pollution and human health.
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