Hydrothermal Synthesis of Copper (II) Oxide Microparticle

Abstract:

CuO microparticle was syntheszied by hydrothermal method. The starting precursors were used as copper (II) nitrate trihydrate (Cu (NO₃)₂·3H₂O), nitric acid (HNO₃) and sodium hydroxide (NaOH). The final pH value of the mixed solution was used 2M NaOH to adjust the pH was 8 and treated at 100-200 oC for 4-6 h in a hydrothermal vessel. The black fine powder was obtained after dried at 100 oC for 5 h. The phase and structure of CuO microparticle were characterized by X-ray diffraction (XRD). A single phase monoclinic structure synthezied by hydrothermal method at 200 oC for 4 and 6 h was obtained without calcination steps. The morphology CuO microparticle was investigated by scanning electron microscopy (SEM). It was likely grain in shape and the particle size in range of 2.94-4.06 μm. The element composition of CuO microparticle was indicated by energy dispersive X-ray spectrometry (EDX). The chemical compositions showed the characteristic X-ray energy of copper (Kα = 0.98 keV) and oxygen (Kα = 0.53 keV), respectively. The functional group of CuO microparticle was indentified by Fourier transform spectrophotometry (FTIR). The wavenumber at 690, 514 and 437 cm^-1 was corresponded to vibration of Cu-O stretching.

• Periodical: Key Engineering Materials (Volume 861)
• Pages: 337-343
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.861.337
• Online since: September 2020
• Authors: Pusit Pookmanee*, Piyarat Somsri, Sukon Phanichphant, Chanchana Thanachayanont
• Keywords: Copper (II) Oxide, EDX, FTIR, Hydrothermal Method, SED, X-Ray Diffraction

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