A Comparative Study of Nanostructures of CuO/Cu2O Fabricated via Potentiostatic and Galvanostatic Anodization

Abstract

A detailed comparative study on the synthesis process of coral-like CuO/Cu2O nanorods (NRs) and nanopolycrystals (NPCs) fabricated on Cu foil employing aqueous electrolyte via potentiostatic (POT) and galvanostatic (GAL) modes is discussed. The structural, morphological, thermal, compositional, and molecular vibration of the prepared CuO/Cu2O nanostructures was characterized by XRD, HRSEM, TG/DTA, FTIR, and EDX techniques. XRD analysis confirmed the crystalline phase of the formation of monoclinic CuO and cubic Cu2O nanostructures with well-defined morphology. The average particle size was found to be 21.52 nm and 26.59 nm for NRs (POT) and NPCs (GAL), respectively, and this result is corroborated from the HRSEM analysis. POT synthesized nanoparticle depicted a higher thermal stability up to 600°C implying that the potentiostatically grown coral-like NRs exhibit a good crystallinity and well-ordered morphology.

New Insights into Cu/Cu2O/CuO Nanocomposite Heterojunction Facilitating Photocatalytic Generation of Green Fuel and Detoxification of Organic Pollutants

“…The peak at 849 cm –1 was as a consequence of stretching modes of Cu–O in CuO while peaks at 623 and 770 cm –1 were due to stretching modes of Cu–O in the Cu 2 O phase. , The broadening of IR active mode of Cu 2 O at 623 cm –1 is indicative of mixed phases in synthesized crystals that were also validated by the XRD pattern . Also, the peaks between 1100 and 1500 cm –1 refer to the stretching mode of Cu–O in the Cu 2 O phase. , Moreover, the band at 1478 cm –1 depicts stretching vibration of CuO phase formed on the Cu particle surface . While, the presence of a peak at 1592 cm –1 refers to O–H bonds originated from absorbed water .…”

“…14 Also, the peaks between 1100 and 1500 cm −1 refer to the stretching mode of Cu−O in the Cu 2 O phase. 46,47 Moreover, the band at 1478 cm −1 depicts stretching vibration of CuO phase formed on the Cu particle surface. 47 While, the presence of a peak at 1592 cm −1 refers to O−H bonds originated from absorbed water.…”

New and Ultra‐Rapid Approach for Electrosynthesis of Highly Efficient Catalysts of Poly(para‐phenylenediamine) Supported Copper Oxide for Ethanol Oxidation in Alkaline Medium

“…It should be noted that the change observed in the size and the morphology of copper particles at Figure 4A and Figure 4B is primarily attributed to the preparation process [58,59] . Indeed, it has been demonstrated that the preparation mode of the catalyst affects greatly the morphology of the deposited copper oxide nanoparticles [60] …”

“…[58,59] Indeed, it has been demonstrated that the preparation mode of the catalyst affects greatly the morphology of the deposited copper oxide nanoparticles. [60] The Energy-dispersive X-ray (EDX) detector coupled to FEG-SEM. EDX spectrum depicted in Figure 4E (Cu(OH) 2 À Cu 2 O@PpPD at E cste) and Figure 4F (Cu(OH) 2 À Cu 2 O@PpPD at I cste), demonstrates the presence of N, O, C and Cu elements.…”

CuO/Cu/rGO nanocomposite anodic titania nanotubes for boosted non-enzymatic glucose biosensors

“…Similarly, several literature reports are congruent with the present results. 46–48 A (002) diffraction peak at 10.6° was observed for the GO nanosheets. Two diffraction peaks at 2 θ = 35.5° and 43.5° indicated (1̄11) CuO, and (111) Cu crystalline, respectively.…”