Vitis labruska skin extract assisted green synthesis of ZnO super structures for multifunctional applications |
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| Affiliation: | 1. Dept. of Chemistry, Siddaganga Institute of Technology, Tumkur, India;2. Prof. CNR Rao Centre for Advanced Materials, Tumkur University, Tumkur, India;3. Dept. of Studies and Research in Chemistry, Tumkur University, Tumkur, India;4. Dept. of Biotechnology, Siddaganga Institute of Technology, Tumkur, India;5. Dept. of Mechanical Engineering, School of Engineering and Technology, Jain University, Bangalore, Karnataka, India;1. Jodhpur National University, Jodhpur 342001, India;2. SITM Rewari, Haryana 123401, India;3. Department of Science, East West Institute of Technology, Bangalore 560 091, India;4. Department of Mechanical Engineering, DSCE, Provost, Dayananda Sagar University, Bangalore 560078, India;5. Department of Physics, LBSGFGC, Bangalore 560 032, India;6. Prof. C.N.R. Rao Centre for Advanced Materials Research, Tumkur University, Tumkur 572 103, India;7. Department of Chemistry, Dayananda Sagar College of Engineering, Shavige Malleshwara Hills, Kumaraswamy Layout, Bangalore 560078, India;8. Dr. D. Premachandra Sagar Centre for Advanced Materials, DSCE, Bengaluru 560078, India;1. UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology, College of Graduate Studies, University of South Africa, Muckleneuk Ridge, PO Box 392, Pretoria, South Africa;2. Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1 Old Faure road, Somerset West 7129, PO Box 722, Somerset West, Western Cape, South Africa;3. Nelson Mandela African Institute for Science & Technology, Arusha, Tanzania;1. Department of Studies and Research in Chemistry, Tumkur University, Tumkur 572103, Karnataka, India;2. Prof. C.N.R. Rao Centre for Advanced Materials, Tumkur University, Tumkur 572103, Karnataka, India;3. Chattisgarh Swami Vivekanand Technical University, Bhilai, Chattisgarh, India;4. Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumkur, 572103, Karnataka, India;1. Department of Studies and Research in Chemistry, Tumkur University, Tumakuru 572103, Karnataka, India;2. Department of Studies and Research in Biochemistry, Tumkur University, Tumakuru 572103, Karnataka, India;3. Department of Studies and Research in Environmental Science, Tumkur University, Tumakuru 572103, Karnataka, India;4. Prof. C. N. R. Rao Centre for Advanced Materials, Tumkur University, Tumakuru 572103, Karnataka, India;5. Dayananda Sagar University, Shavige Malleshwara Hills, Kumaraswamy Layout, Bengaluru 560078, Karnataka, India;1. Department of Chemical Engineering, R.V. College of Engineering, Bangalore- 560059, India;2. Department of Chemistry, R.V. College of Engineering, Bangalore- 560059, India;3. Department of Biotechnology, M.S. Ramaiah Institute of Technology, Bangalore- 560054, India;1. Jayaraj Annapackiam College for Women, Periyakulam, Tamilnadu;2. Thiravium college of Arts and Science, Periyakulam |
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| Abstract: | The formation of unique morphologies of zinc oxide (ZnO) super structured frameworks were reported via a simple and eco-friendly route employing Vitis labruska fruit Black Grape Skin (BGS) extract as a fuel. XRD, FTIR, UV–vis, PL, SEM and TEM studies are performed to analyse the formation and characterization of ZnO. XRD confirmed the crystalline nature of the material with hexagonal Wurtzite structure having average crystallite size of ~50 nm. FTIR spectrum shows a band at 532 cm−1 due to the vibrational mode of Zn-O bending. The band gap of the ZnO was found to be 3.26 eV. SEM images confirm the formation of different morphologies like Mysore pak (a popular Indian dessert), canine teeth, hollow pyramids and gems were obtained by varying the weight of BGS. These superstructures were obtained due to the interaction of Zn2+ with BGS extract. TEM images clearly shows lattice spacing of 0.29 nm corresponding to the (002) plane of ZnO. Photoluminescence (PL) spectrum shows strong yellow light emission upon excitation at 320 nm due to the Zn-O defects. Synthesized ZnO nanoparticles (Nps) exhibited good photocatalytic activity for the degradation of Methylene blue (MB) dye. The photocatalytic activity was due to the production of OH˙ radicals during photo irradiation on ZnO Nps. ZnO Nps also exhibited superior antibacterial activity against Staphylococcus aureus and Escherichia coli bacteria. Further, ZnO Nps were also used in the development of novel electrochemical sensing platform towards the electrochemical detection of hydrazine as a model system at very low concentrations having a detection limit of 0.3 µM. |
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| Keywords: | A Semiconductors B Chemical synthesis C Catalysis D Luminescence |
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