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Materials 2019, 12(5), 804;

Easy, Quick, and Reproducible Sonochemical Synthesis of CuO Nanoparticles

Advanced Mining Technology Center (AMTC), Universidad de Chile, Av. Tupper 2007, Santiago 8370451, Chile
Department of Materials Chemistry, Faculty of Chemistry and Biology, Universidad de Santiago de Chile, Av. Libertador Bernardo O’Higgins 3363, Estación Central, Santiago 9170124, Chile
Department of Chemical Engineering and Biotechnology, Faculty of Physical and Mathematical Sciences, Universidad de Chile, Beauchef 851, Santiago 8370456, Chile
Programa Institucional de Fomento a la I+D+i, Universidad Tecnológica Metropolitana. Ignacio Valdivieso 2409, San Joaquín, Santiago 8940577, Chile
Authors to whom correspondence should be addressed.
Received: 22 January 2019 / Revised: 25 February 2019 / Accepted: 5 March 2019 / Published: 8 March 2019
(This article belongs to the Special Issue Fabrication of 1D and 2D Nanomaterials)
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Copper oxide nanoparticles (CuO NPs) were synthesized in air by reducing copper (II) sulfate pentahydrate salt (CuSO4·5H2O) in the presence of sodium borohydride. The reaction was stabilized with Hexadecyltrimethylammonium bromide (CTAB) in a basic medium and using ultrasound waves. Different molar ratios of CTAB:Cu2+ and NaBH4:Cu2+ were explored, to optimize the synthesis conditions, and to study the stability, size, and Zeta potential of the colloidal suspension. Optimum conditions to generate spherical, stable, and monodispersed nanoparticles with hydrodynamic diameters of 36 ± 1.3 nm were obtained, using 16 mM CTAB and 2 M NaBH4 (molar ratios Cu2+:CTAB:NaBH4 of 1:6:10). X-ray diffraction (XRD) was implemented, and a monoclinic CuO crystal system was formed. This demonstrated a monoclinic crystal system corresponding to CuO. The diffraction peaks were identified and confirmed according to their selected area electron diffraction (SAED) patterns. View Full-Text
Keywords: copper; nanoparticles; particles; synthesis; sonochemical; nanosized; X-ray techniques copper; nanoparticles; particles; synthesis; sonochemical; nanosized; X-ray techniques

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Silva, N.; Ramírez, S.; Díaz, I.; Garcia, A.; Hassan, N. Easy, Quick, and Reproducible Sonochemical Synthesis of CuO Nanoparticles. Materials 2019, 12, 804.

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