Green Synthesis and Characterization of CuO Nanostructures Using Curcuma longa Extract: Optimization of Precursor Concentration

Abbas Hussein Rostam

doi:10.21271/ZJPAS.37.4.4

Authors

Abbas Hussein Rostam Department of General Science, Collage of Basic Education, Salahaddin University-Erbil, Kurdistan Region, Iraq

DOI:

https://doi.org/10.21271/ZJPAS.37.4.4

Keywords:

Green Synthesis, CuO NPs, Curcuma Longa, Nanoparticles Green Synthesis.

Abstract

CuO nanoparticles were synthesized via a green route using Curcuma longa extract as both reducing and capping agents. The influence of precursor concentration (0.025–0.1 M) on the morphology, size distribution, and structural quality of the nanostructures was systematically investigated. Characterization by SEM, XRD, FTIR, UV–Vis spectroscopy, and EDX identified an optimal sheet‑like morphology at 0.05 M (sample S2), with an average thickness of 18 nm, minimal aggregation, and high homogeneity. FTIR spectra confirmed characteristic Cu–O stretching vibrations, and XRD patterns revealed a phase‑pure monoclinic CuO crystal structure. UV–Vis analysis showed a distinct absorption peak at 376 nm corresponding to the optical band gap, while EDX confirmed elemental purity. These results demonstrate that Curcuma longa–mediated synthesis offers an eco‑friendly, scalable approach for producing CuO nanostructures suitable for catalysis, sensing, and environmental remediation applications.

References

AL-FA'OURI, A. M., ABU-KHARMA, M. H., AWWAD, A. M. & ABUGAZLEH, M. K. 2023. Investigation of optical and structural properties of copper oxide nanoparticles synthesized via green method using Bougainvillea leaves extract. Nano-Structures & Nano-Objects, 36, 101051.

ALHAMDI, H. W., MAJANI, S. S., DILLIRAJ, S., SEAL, A., NAGESH, N., SHIVAMALLU, C. & KOLLUR, S. P. 2024. Exploring the anticancer potency and photocatalytic efficiency of bio-derived CuO nanoparticles using Moringa oleifera leaf extract. Results in Chemistry, 7, 101430.

BHUVANESHWARI, V., VAIDEHI, D. AND LOGPRIYA, S., 2018. Green synthe

sis of copper oxide nanoparticles for biological applications. Microbiol Curr Res, 2, 9-10.

ENGKU RAZALI, E. N. Z. & OTHMAN, S. A. 2023. Characterization of Synthesized Copper Nanoparticles from Curcuma Longa: A Preliminary Review. Journal of Research in Nanoscience and Nanotechnology, 9, 42-53.

FAISAL, S., AL-RADADI, N. S., JAN, H., ABDULLAH, SHAH, S. A., SHAH, S., RIZWAN, M., AFSHEEN, Z., HUSSAIN, Z. & UDDIN, M. N. 2021a. Curcuma longa mediated synthesis of copper oxide, nickel oxide and Cu-Ni bimetallic hybrid nanoparticles: characterization and evaluation for antimicrobial, anti-parasitic and cytotoxic potentials. Coatings, 11, 849.

FAISAL, S., AL-RADADI, N. S., JAN, H., ABDULLAH, SHAH, S. A., SHAH, S., RIZWAN, M., AFSHEEN, Z., HUSSAIN, Z., UDDIN, M. N., IDREES, M. & BIBI, N. 2021. Curcuma longa Mediated Synthesis of Copper Oxide, Nickel Oxide and Cu-Ni Bimetallic Hybrid Nanoparticles: Characterization and Evaluation for Antimicrobial, Anti-Parasitic and Cytotoxic Potentials. Coatings , 11, 849.

FUKU, X., THOVHOGI, N. AND MAAZA, M., . Photocatalytic effect of green synthesised CuO nanoparticles on selected environmental pollutants and pathogens. . AIP conference proceedings 2018. AIP Publishing.

GANGAL, A., K., S. N., MANISHA, D., K., S. R., DHEERAJ, B., SINGH, R. V., H., L., SHAVKATZON, A. & AND KUMAR, D. 2025. Green nanotechnology: nanoparticle synthesis using Curcuma amada, Curcuma caesia, Curcuma longa, and Curcuma zedoaria. Green Chemistry Letters and Reviews, 18, 2449122.

GOTA, T., PRAGYA KULKARNI 2024. Bacterial mediated synthesis and characterization of copper oxide nanoparticles and their antimicrobial and dye remediation applications. Spectrum of Emerging Sciences, 11, 4.

GRIGORE, M. E., BISCU, E.R., HOLBAN, A.M., GESTAL, M.C. AND GRUMEZESCU, A.M., 2016. Methods of synthesis, properties and biomedical applications of CuO nanoparticles. Pharmaceuticals, 9, 75.

JAYARAMBABU, N., AKSHAYKRANTH, A., RAO, T.V., RAO, K.V. AND KUMAR, R.R., 2020. Green synthesis of Cu nanoparticles using Curcuma longa extract and their application in antimicrobial activity. Materials Letters, 259, 126813.

JAYASIMHA, H. N., CHANDRAPPA, K.G., SANAULLA, P.F. AND DILEEPKUMAR, V.G., 2024. Green synthesis of CuO nanoparticles: A promising material for photocatalysis and electrochemical sensor. Sensors International, 5, 100254.

JEEVANANDAM, J., KIEW, S.F., BOAKYE-ANSAH, S., LAU, S.Y., BARHOUM, A., DANQUAH, M.K. AND RODRIGUES, J., 2022. Green approaches for the synthesis of metal and metal oxide nanoparticles using microbial and plant extracts. Nanoscale, 14, 2534-2571.

JILLANI, S., JELANI, M., HASSAN, N. U., AHMAD, S. & HAFEEZ, M. 2018. Synthesis, characterization and biological studies of copper oxide nanostructures. Materials Research Express, 5, 045006.

MALVIYA, N., CARPENTER, G., OSWAL, N. & GUPTA, N. 2015. Synthesis and characterization of CuO nano particles using precipitation method. AIP Conference Proceedings, 1665, 050038.

MATHANMOHUN, M., SAGADEVAN, S., RAHMAN, M.Z., LETT, J.A., FATIMAH, I., MOHARANA, S., GARG, S. AND AL-ANBER, M.A., 2024. Unveiling sustainable, greener synthesis strategies and multifaceted applications of copper oxide nanoparticles. Journal of Molecular Structure, 1305, 137788.

MISHRA, S. R. A. A., M., 2022. CuO and CuO-based nanocomposites: Synthesis and applications in environment and energy. Sustainable Materials and Technologies, 33, e00463.

MURUGESAN, S., MUTHAIAH, D., MUTHUSAMY, Y., GANESAN, S. & MOHAMED MYDEEN, A. K. 2023. Green synthesis of Copper Nanoparticles using Curcuma longa (L.) and Azadirachta indica (L.) and their Antibacterial Activity. Journal of Medicinal plants and By-Products, 12, 449-458.

OKOYE, P. C., AZI, S. O., QAHTAN, T. F., OWOLABI, T. O. & SALEH, T. A. 2023. Synthesis, properties, and applications of doped and undoped CuO and Cu2O nanomaterials. . Materials Today Chemistry, 30, 101513.

PATRA, D. A. E. K., R., 2021. Curcumin as a novel reducing and stabilizing agent for the green synthesis of metallic nanoparticles. Green Chemistry Letters and Reviews, 14, 474-487.

PRASAD, A. S. 2019. Green synthesis and spectral analysis of surface encapsulated copper (II) oxide nanostructures. Materials Science-Poland, 37, 503-509.

S NAZ, A. G., M ZIA, R JAVED 2023. Synthesis, biomedical applications, and toxicity of CuO nanoparticles Applied Microbiology and Biotechnology 107, 1039-1061.

SHUKLA, H. 2022. Antibacterial and morphological studies of plant-mediated synthesized CuO nanoparticles using Azadirachta indica (neem) leaf extract. International Journal of Nano Dimension, 13, 197-204.

SINGH, H., DESIMONE, M.F., PANDYA, S., JASANI, S., GEORGE, N., ADNAN, M., ALDARHAMI, A., BAZAID, A.S. AND ALDERHAMI, S.A., 2023. Revisiting the green synthesis of nanoparticles: uncovering influences of plant extracts as reducing agents for enhanced synthesis efficiency and its biomedical applications. International journal of nanomedicine, 18, 4727-4750.

VENKATAS, J., DANIELS, A. & SINGH, M. 2022. The potential of curcumin-capped nanoparticle synthesis in cancer therapy: a green synthesis approach. Nanomaterials, 12, 3201.

ZHANG, J. & XU, J. 2024. Fabrication of porous copper oxide nanostructure on nickel foam electrode by a co-precipitation method for non-enzymatic glucose detection. Microchemical Journal, 203, 110864.

ZHIAN, H., KHOJASTEH, H., NIKMARAM, S. & AZIMI, C. 2024. Eco-friendly hydrothermal synthesis of CuO nanoparticles using natural materials as reducing and capping agents. Iranian Journal of Chemistry and Chemical Engineering, 43, 946-955.