Browsing by Author "Durai, Mani"

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    FACILE APPROACH FOR GREEN SYNTHESIS OF FLUORESCENT CARBON DOTS FROM MANIHOT ESCULENTA AND THEIR POTENTIAL APPLICATIONS AS SENSOR AND BIO-IMAGING AGENTS
    (Elsevier, 2022-03) Monisha, Sivanandhan; Amutha, Parasuraman; Chinnasamy, Surya; Komalavalli, Lakshminarayanan; Balu, Krishnakumar; Durai, Mani; Young-Ho, Ahn
    An eco-friendly approach for the synthesis of blue fluorescent carbon dots (CDs) using Manihot esculenta with an average size of 3–5 nm through hydrothermal method has been reported. Functionality of the prepared CDs was characterized by FT-IR spectroscopy. Structural and morphological characterisation were carried with XRD and TEM techniques, these studies exposed amorphous nature of carbons dots with spherical shape. Optical properties of CDs were examined using UV–Visible and Photoluminescence spectral techniques. Owing to strong blue fluorescence, CDs were evaluated for its ability to sense various heavy metal ions. Attributable to significant response towards Fe3+ ions among different metal ions tested (Al3+, Cu+, Co2+, Pb2+, Zn2+, Fe3+, Ca2+, Hg2+ and Mg2+), CDs were used as a selective fluorescence probe for detection of Fe3+. The bioimaging and cytotoxicity aspects of CDs on MDA MB-231 breast cancer cell lines were confirmed by localised experiments. The synthesised CDs were found to be non-toxic even at their high concentration of 500 µg/mL.
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    FACILE APPROACH FOR GREEN SYNTHESIS OF FLUORESCENT CARBON DOTS FROM MANIHOT ESCULENTA AND THEIR POTENTIAL APPLICATIONS AS SENSOR AND BIO-IMAGING AGENTS
    (Elsevier, 2022-03) Monisha, Sivanandhan; Amutha, Parasuraman; Chinnasamy, Surya; Komalavalli, Lakshminarayanan; Balu, Krishnakumar; Durai, Mani; Young-Ho, Ahn
    An eco-friendly approach for the synthesis of blue fluorescent carbon dots (CDs) using Manihot esculenta with an average size of 3–5 nm through hydrothermal method has been reported. Functionality of the prepared CDs was characterized by FT-IR spectroscopy. Structural and morphological characterisation were carried with XRD and TEM techniques, these studies exposed amorphous nature of carbons dots with spherical shape. Optical properties of CDs were examined using UV–Visible and Photoluminescence spectral techniques. Owing to strong blue fluorescence, CDs were evaluated for its ability to sense various heavy metal ions. Attributable to significant response towards Fe3+ ions among different metal ions tested (Al3+, Cu+, Co2+, Pb2+, Zn2+, Fe3+, Ca2+, Hg2+ and Mg2+), CDs were used as a selective fluorescence probe for detection of Fe3+. The bioimaging and cytotoxicity aspects of CDs on MDA MB-231 breast cancer cell lines were confirmed by localised experiments. The synthesised CDs were found to be non-toxic even at their high concentration of 500 µg/mL.
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    SYNTHESIS, CHARACTERIZATION OF GELATIN ASSISTED ZNO AND ITS EFFECTIVE UTILIZATION OF TOXIC AZO DYE DEGRADATION UNDER DIRECT SUNLIGHT
    (Elsevier, 2021-03) Balu, Krishnakumar; Ali, Alsalme; Fahad A, Alharthi; Durai, Mani; Anandan, K; Parasuraman, Amutha; Abilio J FN, Sobral
    A highly solar active gelatin assisted ZnO (g/ZnO) was successfully synthesized by a sol-gel method. The photocatalyst was characterized by FE-SEM, HR-TEM, XRD, DRS, PL, FT-IR and Raman spectra. The prepared ZnO and g/ZnO were effectively utilized for toxic AB 1 azo dye degradation under direct sunlight. About 100% of degradation occurred with g/ZnO in a shorter time compared with prepared ZnO. The higher efficiency of g/ZnO in azo dye degradation under solar light may be due to higher visible light absorbance of g/ZnO compared with the prepared ZnO. A suitable degradation mechanism was proposed for AB 1 degradation under sunlight by g/ZnO. The g/ZnO was found to be sable and reusable. The addition of scavengers contributes a significant decrease in the photodegradation efficiency of the catalyst.