Fabrication of Copper Oxide Nanoparticles by Sol-gel Route

Kayani, Zohra Nazir; Ali, Yasmin; Kiran, Faiza; Batool, Iffat; Butt, Mehak Z.; Umer, Maryam; Riaz, Saira; Naseem, Shahzad

doi:10.1016/j.matpr.2015.11.067

Cited by 10 publications

(2 citation statements)

References 11 publications

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“…In addition, the X‐ray diffraction (XRD) pattern was studied to verify the CuO pure phase. Figure 6 shows this identification achieved via XRD at a speed scan of 0.02 and 2θ range of 20°‐70°, which is consistent with the literature 32 in a single phase structure showing high stability at different ranges of temperatures.…”

Section: Cuo Synthesis and Characterizationsupporting

confidence: 87%

Increasing the freshwater productivity of a solar still loaded with CuO nanofluids using vibration motion and cover cooling techniques

et al. 2021

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The performance of a single-slope solar still system has been improved with the addition of copper oxide (CuO) nanopowder in water as nanofluid and thermoelectric glass cover cooling combination. The use of vibration further enhances the performance of distillate water as a result of the accelerated heat transfer. In this study, CuO nanofluids loaded the solar still system at volume concentrations of 0.5%, 1%, and 1.5%. The design, fabrication, and testing of the single still were conducted under the local weather conditions of Alexandria, which is located in the northwest of Egypt. The proposed solar still had a base area of 1 m 2 and fitted with four coiled springs, a DC motor, and a photovoltaic (PV) solar panel. The vibration generator was a three-phased, with a 1-HP power motor (220 V, 50 Hz, and 1380 rpm maximum speed) fixed to a compact disk with a small punch for adding masses to generate the un-mass balance forces. The power source for the DC motor was a 250-W PV. The daily output of fresh water during the experimental period was empirically measured under the same climate conditions, and the results were compared with those of a conventional solar still. The daily rates of freshwater productivity were investigated in two cases: (a) under vibration without cover cooling and (b) under vibration with cover cooling at the three given nanofluid volume concentrations. Based on the results, the highest daily freshwater productivity attained with the vibration and cover cooling (at the 1.5% nanofluid volume concentration) 7.

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Section: Cuo Synthesis and Characterizationsupporting

confidence: 87%

Increasing the freshwater productivity of a solar still loaded with CuO nanofluids using vibration motion and cover cooling techniques

et al. 2021

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“…Same precursor has been used in previous research [3,5,7,8,[10][11][12][13][14]. On the other hand, copper nitrate was used by Kayani et al [15] and copper chloride was also used in a number of research [16][17][18].…”

Section: Methodsmentioning

confidence: 99%

pH value variation for effective solar energy harnessing of copper oxide based sol-gel prepared coatings

Khaled

El‐Mahallawy

Shoeib

et al. 2019

Surf. Topogr.: Metrol. Prop.

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Selectivity (maximum absorptivity/minimum emissivity) of a thin film has become the decisive parameter associated with the success of solar energy capturing coat. Accordingly, the issue of developing effectively solar energy absorbing coat is of great interest in research. This research studies the effect of changing the pH value of copper oxide based coats and monitors its effect on optical properties. Increasing the surfactant percentage has resulted in more enhanced coats. prepared coats with pH=5.5 have selectivity of α/ε=96.3/65 for 5 wt% surfactant and α/ε=97/56.6 for 20 wt% surfactant. Moreover, optical bandgap was calculated to vary between 1.29 and 1.86 eV for different pH values. Through this work, optical properties, bandgap, coat thickness, surface topography, and existing phases are all investigated in details.

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