Porous Texture of CuO Prepared from Copper Oxalate Precursor

Abstract

The porous texture of CuO obtained from CuC2O4 • 0.5H2O as a precursor, as well as the interconnection between the texture of the initial oxalate and that of the copper oxide obtained, has been studied by physisorption, XRD, XPS and SEM methods. The dimensions of the particle aggregates and the crystalline particles were altered as a consequence of the thermal decomposition of CuC2O4 • 0.5H2O to CuO, and this led to an increase of ca. 1.5-times in the specific surface of the CuO obtained relative to that of the initial substance. The comparatively non-uniform sizes of the intra-aggregate mesopores in CuC2O4 • 0.5H2O were transformed into considerably smaller intra-aggregate mesopores in CuO. A finite increase in the volume of the intra-crystallite pores in CuO was also observed, although this did not change the average size of the intra-crystallite pores in the oxide obtained nor the character of the pore-size distribution with respect to the starting material. In addition, as a result of the thermal decomposition of CuC2O4 • 0.5H2O, the mesoporosity of the prepared oxide also developed. However, the CuO component retained the textural type characteristic of the initial CuC2O4 • 0.5H2O.

Efficient electron-induced removal of oxalate ions and formation of copper nanoparticles from copper(II) oxalate precursor layers

“…The corresponding O 1s spectrum only shows a single peak at 532.5 eV. The peak positions of Cu 2p 3/2 and O 1s are in good agreement with literature data for CuC 2 O 4 ·0.5H 2 O [ 37 ].…”

Insights into the Synthesis Parameters Effects on the Structural, Morphological, and Magnetic Properties of Copper Oxide Nanoparticles

“…The water molecules' degree "n" seems to depend entirely on the precursor's nature as well as the fabrication procedures. For instance, simple precipitation methods using copper nitrate and oxalic acid or copper sulfate and potassium oxalate as starting materials lead to the formation of anhydrous CuC 2 O 4 and CuC 2 O 4 .0.5H 2 O, respectively [5,6]. Furthermore, Wenpei et al [7] employed hydrothermal and solvothermal methods that led to the successful synthesis of n = 0.14 and n = 0.53 compounds.…”

Structural investigations of (Mn, Dy) co-doped ZnO nanocrystals using X-ray absorption studies

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