International Journal on Science and Technology

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Synthesis and Morphological Characterization of Copper Oxide (CuO) Nanostructures

Author(s) Akhilesh Prasad Singh
Country India
Abstract Copper oxide (CuO) nanostructures were synthesized using a sol-gel route based on a copper salt precursor and citric acid as a chelating agent, followed by gel drying and calcination. The resulting black CuO powder was examined by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) to evaluate its morphology across nanoscale and bulk scale. TEM micrographs revealed irregular, densely agglomerated nanostructures with scalloped, cauliflower-like edges and a fine-grained, porous internal texture, consistent with particle fusion occurring during thermal decomposition of the gel network. Complementary SEM revealed two distinct hierarchical surface architectures within the CuO powder: densely packed, near-spherical “cauliflower-like” agglomerates built from fine sub-particles, and larger flower-like (nanoflower) assemblies composed of thin, faceted nanoplates radiating from central nucleation points. Both SEM morphologies are consistent with the fused, porous nanostructure observed by TEM and indicate a hierarchically organized, high-surface-area powder. Together, the SEM and TEM results support the conclusion that the sol-gel method produces a highly agglomerated, hierarchically structured, porous CuO morphology well suited to surface-area-dependent applications such as catalysis and gas sensing, though XRD and BET analyses are still recommended for full crystallographic and surface-area confirmation.
Published In Volume 2, Issue 4, October-December 2011
Published On 2011-10-08
DOI https://doi.org/10.71097/IJSAT.v2.i4.11551
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Crossref DOI prefix of IJSAT is 10.71097/IJSAT

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