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International Journal of Nanoscience and Nanotechnology (IJNN)، جلد ۲۰، شماره ۳، صفحات ۱۹۷-۲۰۷
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عنوان انگلیسی Efficient Single-Step Biosynthesis of Copper Nanoparticles using Essential Oil Extracted from Curry Leaves (Murraya koenigii) for Supercapacitor Electrodes in Energy Storage Applications
چکیده انگلیسی مقاله     Nanobiotechnology is an innovative branch of modern science that has brought significantly changed in material research. The present highlights the use of essential oil collected from curry leaves (Murraya koenigii) as a simple, affordable, and efficient reducing agent for the fabrication of copper oxide (CuO) nanoparticles (NPs). These NPs were evaluated for their potential as electrodes in supercapacitors. During the synthesis, the solution changed from pale blue to green and finally to reddish-brown. This indicates the reduction of Cu²⁺ ions in copper sulfate to CuO NPs, which showed a characteristic UV-visible absorption peak at 292 nm. GCMS analysis reveals that compounds such as α-Terpinene, Linalool, Myrcene, Geranyl acetate, Elemol, and Allo-Ocimene in the essential oil played a role in NPs formation. The NPs were primarily spherical in shape with 24 nm average particle size. These particles exhibit a monoclinic crystal structure with 81.26% of elemental copper. Cyclic voltammetry results showed specific capacitances of 369, 324, 305, 265, and 210 F/g respectively at scan rates of 10, 20, 40, 60, and 100 mV/s. The maximum specific capacitance was noticed to be 369 F/g, with a retention capacity of 97.6% even after 6000 charge-discharge cycles demonstrating that these NPs have suitability for supercapacitor applications. These results suggest that biologically synthesized CuO NPs have great potential for utilization as energy storage devices, particularly as supercapacitor electrodes.
کلیدواژه‌های انگلیسی مقاله Green synthesis,essential oil,GCMS analysis,CuO NPs,supercapacitor applications
نویسندگان مقاله Byrapogu Purna Chandra Rao |
Department of Chemistry, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur - 522302, A.P., India

Uppu Naga Babu |
Department of Engineering Chemistry, S.R.K.R. Engineering College, Chinna Amiram, Bhimavaram - 534204, A.P., India

Bhagya Kumar Tatavarti |
Department of Chemistry, K.B.N. College (Autonomous), Kothapeta, Vijayawada - 520001, A.P., India

Kandula Rekha |
Department of Biotechnology, Dr.V.S Krishna Govt. Degree College, Visakhapatnam - 530022, A.P., India

Venkateswara Rao Anna |
Department of Chemistry, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur - 522302, A.P., India

نشانی اینترنتی https://www.ijnnonline.net/article_721800_4509f923a087cbfb81f6717951a00f93.pdf
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