Effect of annealing temperature on structural, optical and photocatalytic properties of CuO nanoparticles
DOI:
https://doi.org/10.13171/mjc751911261230laAbstract
In this study, pure crystallographic CuO nanoparticles are successfully synthesized via the sol-gel method through the reduction of copper acetate in water as a solvent. The as-prepared nanoparticles are characterized by X-ray diffraction (XRD), UV-Vis spectrophotometer and transmission electron microscopy (TEM). In order to study the effect of annealing temperature on their morphological and optical behavior, the obtained nanoparticles are annealed at different temperatures, from 200°C to 800°C. XRD studies revealed that by increasing temperature, the full width at half maximum (FWHM) of peaks decreases indicating the enhancement of the grain size of the CuO nanoparticles. Our result also reveals that the optical band gap decreases with the increase of temperature, which can be fully reflected by its variation from 3.83 eV to 2.21 eV when nanoparticle’s size varied from 9.84 nm to 188.33 nm respectively, figured out in TEM analysis. In the studied annealed range temperature, the obtained Eg values remain widely higher than reported bulk values. The photocatalytic deactivation/degradation process significantly enhanced the activity of CuO-NPs under UV–visible light in the presence of MB dye, we compare then the photodegradation spectra of CuO-NPs annealed at 200°C, 400°C, 600°C and 800°C, obtained by UV-visible spectroscopy.References
- Serena A. Corr, Nanoscience: Metal oxide nanoparticles; ed. by P. O'Brien; RSC, UK, 2012, pp. 180-207.
- R. Katwal, H. Kaur, G. Sharma, M. Naushad, D. Pathania, Electrochemical synthesized copper oxide nanoparticles for enhanced photocatalytic and antimicrobial activity, J. Ind. Eng. Chem. 2015, 2566, 1-12.
- T. Ishihara, M.Higuchi, T.Takagi, M. Ito, H. Nishiguchi, T.Takita, Preparation of CuO thin films on porous BaTiO3 by self-assembled multilayer film formation and application as a CO2 sensor, J mater Chem., 1998, 8, 2037-2042.
- C. Xu, G. P. Rangaiah, X. S. Zhao, Photocatalytic Degradation of Methylene Blue by Titanium Dioxide: Experimental and Modeling Study, Ind. Eng. Chem. Res., 2014, 53, 14641−14649.
- W, El rouby, A. al-ghamdi, M. abdel-wahab, A. Jilani, Sunlight-enhanced catalytic degradation over Ag-CuO nanoparticles thin films prepared by DC/RF sputtering technique, Bull. Mater. Sci. 2018, 41:58, 1-11.
- A. Tadjarodi, O. Akhavan, K. Bijanzad, Photocatalytic activity of CuO nanoparticles incorporated in mesoporous structure prepared from bis (2-aminonicotinato) copper (II) microflakes, Transactions of nonferrous metals. Society of China, 2015, 25, 3634-3642.
- A. Zoolfakar, N. Abu Bazar, N. Khairir, Y. Husaini, M. Abu Talip, R. Abdul Rani, M. Rusop, Synthesis and Enhanced Photocatalytic Property of CuO Nanostructure via Dip Coating Method, IEEE. 2017, 978, 30-33.
- P. Chand, A. Gaur, A. Kumar, Study of CuO nanoparticles synthesized by solâ€gel method, AIP Conference Proceedings, 2011, 211, 1393.
- R. Hemanth, M. Sekar, B. Suresha, Effects of fibers and fillers on mechanical properties of thermoplastic composites, Indian Journal of Advances in Chemical Science, 2014, 2, 28-35.
- C.C. Vidyasagar, Y.A. Naik, T.G. Venkatesh, R. Viswanatha, Solid-State Synthesis and Effect of Temperature on Optical Properties of CuO Nanoparticles, Powder Technol. 2011, 214, 337-343.
- P. Mallick, S. Sahu, Structure, Microstructure and Optical Absorption Analysis of CuO Nanoparticles Synthesized by Sol-Gel Route, Nanosci & Nanotechnol. 2012, 2, 71-74.
- G. Varughese, V. Rini, S.P. Suraj, K.T. Usha, Characterisation and optical studies of copper oxide Nanostructures doped with lanthanum ions, ADV. MAT. SCI, 2014, 4 (42), 49-60.
- N. Zayyoun, B. Jaber, L. Laânab, E. Ntsoenzok, R. Bekkari, Effect of solvent on the morphological and optical properties of CuO nanoparticles prepared by simple sol-gel process, J. Mater. Environ. Sci., 2016, 7(5), 1791-1797.
- K. Borgohain, S. Mahamuni, Formation of single-phase CuO quantum particles, J. Mater. Res. 2002, 17, 1220-1223.
- L.C. Bourne, P.Y. Yu, A. Zettl, M.L. Cohen, High-pressure electrical conductivity measurements in the copper oxides, Phys. Rev. B., 1989, 40, 10973-10976.
- H. Bouyarmane, S. Saoiabi, I, El Hanbali1, M. El Karbane, A. Rami, S. Masse, A. Laghzizil, T. Coradin, Porous hydroxyapatite-TiO2 nanocomposites from natural phosphates and their decolorization properties, Eur. Phys. J. Special Topics, 2015, 224, 1863-1871.
- J. Z. Zhang, Optical properties and spectroscopy of nanomaterials; ed. by World Scientific Publishing Co. Pte. Ltd 2009, pp. 229-299.
Downloads
Published
Issue
Section
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).