Synthesis and characterization of CuO nanoparticles and TiO2/CuO nanocomposite and using them as photocatalysts

Ridha, Nuha Abdul-Saheb; Egzar, Hanaa Kadtem; Kamal, Noor Mustafa

doi:10.1063/5.0029408

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…Table 2 shows that A1 is the best one where degradation for the MB reaches 92.28%, at 7 h. A first order rate constant (k) value was determined from the plot of ln (At/Ao) vs. irradiation time (t) (Fig. 10) to study the effect of UV irradiation time on the degradation process and was found to be 0.2239 min-1 and R2 = 0.935, which refers to the fitted line's correlation coefficient [26]. Figure 11 indicates the bar graph of the degradation rate of MB dye for samples (A1-A3) with respect to irradiation time (1 and 7h).…”

Section: Photocatalytic Activity Of Zno Npsmentioning

confidence: 99%

Zinc oxide nanoparticles: green synthesis, characterization, photocatalysis, and antibacterial activity

et al. 2022

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The present work employs Ocimum Basilicum extract as a bio-reducing and a capping agent to synthesize zinc oxide nanoparticles (ZnO NPs) at different temperatures (30 o C, 6 0 o C, and 90 o C) in an efficient, simple, and environmentally friendly method (green synthesis), as well as their use in treating wastewater and antibacterial activity. The samples have a hexagonal structure confirmed by the X-ray Diffraction (XRD), and by using the Scherrer equation, the particle size was calculated. UV-Visible diffuse reflectance spectroscopy reveals the characteristic absorbance peak at 373 nm and gives the band gap nearly 3.23 eV for synthesized (ZnO NPs) due to the quantum confinement effect. Transmission electron microscopy (TEM) shows spherical-shaped particles. The products (ZnO-NPs) have a good effect on antibacterial activity against different types of bacteria. After 7 hours, the degradation rate of methylene blue (MB) dye by synthesized ZnO-NPs as a photocatalyst is 92.28 % from ZnO NPs synthesized at 30 oC.

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Section: Photocatalytic Activity Of Zno Npsmentioning

confidence: 99%

Zinc oxide nanoparticles: green synthesis, characterization, photocatalysis, and antibacterial activity

et al. 2022

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“…The CuO-ZrO 2 NCs exhibits interesting properties due to the synergy between its individual components. As the CuO NPs is a p-type semiconductor with a narrow band gap of 1.2 eV and are known for their high electrical conductivity and catalytic activity [13,14], while ZrO 2 NPs is an n-type semiconductor with wide band gap (5-7 eV) offer excellent chemical stability, thermal resistance, and oxygen storage capacity [15,16]. When combined at the nanoscale, CuO-ZrO 2 NCs can possess enhanced electrical conductivity, catalytic performance, thermal stability, and gas sensing properties [17].…”

Section: Introductionmentioning

confidence: 99%

Solvent free fabrication and thermal tuning of copper oxide-zirconium dioxide nanocomposite for enhanced photocatalytic efficacy

Zain,

Yasin,

Haq

et al. 2024

Mater. Res. Express

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Recently, several methods has been used for the synthesis of bimetal oxide nanocomposite, however, very few studies are available on the solvent free mechanochemical synthesis of nanomaterials. In this study, mortar and pestle assisted fabrication of copper oxide-zirconium dioxide nanocomposite (CuO-ZrO2 NC) was carried out and was calcined at 300, 600 and 900°C. The variation in crystallographic parameters was examined through X-ray diffraction (XRD) and the crystallite size was found to be gradually increased with increasing calcination temperature. The morphological changes with increasing calcination temperature were traced during scanning electron microscopy (SEM) analysis. The percentage elemental composition was verified through energy dispersive X-ray (EDX) spectroscopy whereas the functional group analysis was done through Fourier transform infrared (FTIR) spectroscopy, where the intensity of peaks assigned to hydroxyl moiety decreased with increasing calcination temperature. The CuO-ZrO2NCs were used as a photocatalysts for the degradation of the Fluorescein in the presence of solar light and highest photodegradation (77.27 %) was noticed for the CuO-ZrO2 NC calcined at 900 °C.

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Precipitation-assisted, low-temperature-annealed TiO2 and its nanocomposites-based photoanode for DSSCs

Dutta,

Nayak,

Nag

et al. 2024

J Mater Sci: Mater Electron

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Synthesis and characterization of CuO nanoparticles and TiO2/CuO nanocomposite and using them as photocatalysts

Cited by 6 publications

References 22 publications

Zinc oxide nanoparticles: green synthesis, characterization, photocatalysis, and antibacterial activity

Zinc oxide nanoparticles: green synthesis, characterization, photocatalysis, and antibacterial activity

Solvent free fabrication and thermal tuning of copper oxide-zirconium dioxide nanocomposite for enhanced photocatalytic efficacy

Precipitation-assisted, low-temperature-annealed TiO2 and its nanocomposites-based photoanode for DSSCs

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