In the current study, we have explored the consequences of synthesis conditions on optical, morphological, and photoluminescence characteristics of hybridized ZnO nanocomposites. The photodegradation kinetics of Triclopyr, a pesticide, using hydrothermally synthesized ZnO/CuO materials at various synthesis conditions were …

The FTIR spectra of the different solvents assisted ZnO/CuO samples are shown in Fig. 2.In Fig. 2 the broad absorption bands observed at~3418 and ~1635 cm −1 correspond to the O–H stretching and the bending vibrations of H 2 O. The broad peak observed in the range 460–560 cm −1 is the combination of Cu–O and Zn–O vibrations, …

We synthesized ZnO, CuO, Cu doped ZnO with 1, 2 and 3 wt %, and for Cu additions at 6, 8, 10, 15, 30 and 50 wt% this resulted in ZnO–CuO composites with different morphologies. X-ray diffraction (XRD) showed hexagonal and monoclinic crystalline phases for pure ZnO and CuO, respectively. Electron microscope images showed two …

The ZnO/CuO solar cells with 10% cobalt doped ZnO and 20 nm thick MoO 3 buffer layer achieved the best power conversion efficiency of 2.11%. Our results demonstrate the crucial role of the band alignment on the performance of the ZnO/CuO heterojunction solar cells and could pave the way for further progress on improving conversion efficiency in ...

Fig. 1 shows the morphology images of pure ZnO and CuO/ZnO composites. It can be clearly seen from Fig. 1 (a) that the ZnO particles grown by thermal evaporation exhibit a tetrapod-shaped whisker morphology. After CuO and ZnO with different ratios are mixed together and ground, the tetrapod-shaped whiskers no longer exist; instead, …

The synthesis of optoelectrically enhanced nanomaterials should be continuously improved by employing time- and energy-saving techniques. The porous …

2.1 Synthesis of ZnO/CuO nanocomposites (ZnO 1-x-CuO x) nanocomposites were synthesized using a simple hydrothermal method.Here x = 0, 2.5, 5, and 10 wt%.To prepare nanoparticles of ZnO and CuO, firstly, 5 g of zinc acetate dihydrate (Zn(CH 3 CHOO)2. 2H 2 O) was dissolved into 50 mL of ethanol under continuous …

The catalyst ZnO nanorods and ZnO/CuO nanocomposites of different weight ratios were prepared by new thermal decomposition method, which is simple and cost effective. The prepared catalysts were characterized by different techniques such as X-ray diffraction, transmission electron microscopy, field emission scanning electron …

1D CuO/ZnO nanocomposites were grown on Si(100) substrates by means of an original two-step synthetic strategy. ZnO nanorod (NR) arrays were initially deposited by plasma enhanced-chemical vapor deposition (PE-CVD) from an Ar–O 2 atmosphere. Subsequently, tailored amounts of CuO were dispersed over zinc oxide matrices by radio frequency …

However, although the initial quantity is the same both in the mixed ZnO/CuO and ZnO–CuO HNCs samples, the atom ratio of Cu/Zn is 2.1 times higher in ZnO–CuO HNCs sample than that in mixed ZnO ...

oxide-zinc oxide (C uO-ZnO) has attracted more research. due to their excellent tunable catal ytic, electrical, optical, and magnetic properties and environment -friendly nature. Coupling of one ...

This study proposes a facile cost-effective precipitation method to synthesis three-dimensional CuO/ZnO nanocubes structure to fabricate a cost-effective energy storage device. X-ray diffraction reveals that the synthesized CuO and ZnO has monoclinic and hexagonal structure without impurity. Composition and functional group are confirmed by …

on ZnO, CuO and Ag, despite the fact that the wet chemistry consume and discharge di˜erent chemicals with potentially adverse e˜ects on the environment, many studies 41–47 were carried on ...

The synthesis of optoelectrically enhanced nanomaterials should be continuously improved by employing time- and energy-saving techniques. The porous zinc oxide (ZnO) and copper-doped ZnO …

Менежментийн үйл явц ба менежерийн ажил, байгууллага, менежер, менежментийн үүрэг, удирдлагын зарчим, менежерийн түвшин, менежерийн ур чад - Download as a PDF or …

ZnO/CuO nano-composites were synthesized via low temperature hydrothermal technique using metal nitrates as raw materials. First of all, metal nitrates were dissolved in water with different molar ratio (Zn/Cu = 2:1, 4:1, 6:1, 8:1, 10:1) and then stirred on magnetic stirrer for two hours with drop wise addition of 1 M NaOH to attain …

CuO–ZnO nanocomposites (NCs) were synthesized using an aqueous extract of Verbascum sinaiticum Benth. (GH) plant. X-ray diffraction (XRD), …

ZnO-CuO/rGO nanocomposite, ZnO, and CuO nanoparticles had Rct values of 5.8, 7.9, 12, Ω and Rs values of 27.8, 65, and 53.3 Ω, respectively. The composite electrode materials have low Rs (27.8) and Rct (5.8) values, indicating that the ZnO.CuO nanoparticles are in close contact with the highly conductive rGO. The slope of the …

Then, four ZnO/CuO composites were obtained, referred as TL-ZC-350, TL-ZC-400, TL-ZC-450 and TL-ZC-500 within the study. The synthetic process is illustrated in Fig. 1. Pure ZnO and CuO were prepared under the similar routes (S1 of the Supplementary Information). For comparison, ZnO/CuO (CP-ZC) was also prepared …

The FESEM images at higher magnification of the CuO nanowires (Fig. 3b inset) and CuO–ZnO core–shell nanowire arrays (Fig. 3d inset,f inset) exhibit an average diameter of about 50 nm for the ...

ZnO has been used as a dominant candidate for solar cell, gas sensing and piezoelectric applications. Addition of CuO can enhance the solar absorption capacity of ZnO nanostructures. In the present work, nanocomposites of CuO–ZnO have been synthesized from copper sulphate and zinc acetate by sol gel. The annealing …

Arsenic (III) exposure, often from contaminated water, can have severe health repercussions. Chronic exposure to this toxic compound is linked to increased risks of various health issues. Various technologies exist for arsenic (III) removal from contaminated water sources. This work synthesized ZnO-CuO nanocomposites through …

Polyethyleneglycol-coated biocompatible CuO–ZnO nanocomposites were fabricated hydrothermally varying Zn:Cu ratios as 1:1, 2:1, and 1:2, and their antibacterial activity was determined through ...

Abstract. The synthesis of CuO-ZnO composites and their application as anti-bacterial have been conducted. Nanocomposite CuO-ZnO was synthesized using sol-gel method. The nanocomposite products were characterized by XRD, DR-UV, SAA, FTIR, SEM-EDX. The results of the XRD analysis showed that the CuO-ZnO composite has a …

The CuO-ZnO in NaOH electrolyte exhibits a high specific capacitance of 313 F/g at 2 A/g current density. The GCD curve for the best electrode material CuO …

The vertical alignment of ZnO nanorods as well as its surface modification by CuO nanoparticles increased the effective surface area of the device and the formation of p-CuO/n-ZnO junction at the interface are the reasons for the improved performance at room temperature. In addition to ethanol, the fabricated device has the capability to detect ...

Fabrication of heterojunction semiconductors for the photodegradation of toxic organic dyes under sunlight exposure has earned significant recognition from researchers nowadays. On that account, we have synthesized and explored a comparative photodegradation study of ZnO/CuO nanocomposite with ZnO and CuO nanoparticles. …

The catalytic conversion of CO 2 into value-added fuels is a promising strategy for mitigating energy crisis. Cu/ZnO is extensively used for CO 2 hydrogenation to methanol (CH 3 OH) but still generally suffers …

This work describes the fabrication of CuO-ZnO (CZO) and CuO-ZnO/g-C3N4 (CZO/GCN) nanocomposite via an expeditious and cost-effective co-precipitation approach. The prepared nanomaterials have been characterized with XPS, TEM, elemental mapping, SEM with EDX, XRD, and FT-IR. Morphological analysis proves that the synthesized …

We present the successful synthesis of a biogenic ZnO/CuO/Fe2O3 nanocomposite using an aqueous leaf extract of Ocimum Basilicum L. The confirmation of biosynthesis was achieved through UV–Visible spectrophotometry (UV–Vis), which provided evidence of ZnO/CuO/Fe2O3 NC formation. Scanning Electron Microscopy further …

ZnO–CuO core–branch hybrid nanoparticles, synthesized by copper oxide growth and controlled oxidation on ZnO nanospheres, exhibited remarkable enhancement of catalytic activity and stability for ultrasound-assisted [3+2] azide–alkyne cycloaddition reactions, due to their high surface area and active facets o

ZnO-CuO core-branch hybrid nanoparticles, synthesized by copper oxide growth and controlled oxidation on ZnO nanospheres, exhibited remarkable enhancement of catalytic activity and stability for ultrasound-assisted [3+2] azide-alkyne cycloaddition reactions, due to their high surface area and active …

Figure 6 shows the image of water droplet (3 μl) on CuO/ZnO nanocomposite where an average value of 59.6° was measured. The obtained contact …

Fig. 2 shows the FESEM images of pure ZnO and ZnO/CuO composites prepared under a various concentration of copper acetate solution. Hexagonal nanorods (ZC0) are randomly oriented to form a flower-like morphology as shown in Fig. 2 (a). After the incorporation of CuO (1–10%) into ZnO, the CuO nanoparticles are decorated on …