Copper oxide (CuO) was one of the potential p-type semiconductors and gains significant attention because of its excellent, optical, electrical, physical and magnetic properties. CuO with narrow band gap (1.2 eV) is widely used in various applications. CuO NPs have been shown to be good catalysts for Vol 40, 2020 1139 Tierärztliche Praxis

Objectives: The aim of this work is to fabricate and analyze the Aluminum Doped ZnO, Copper Oxide CuO and their heterojunction CuO/ZnO:Al using Spin Coating and Rf-Sputtering techniques.Methods: ZnO:Al was synthesized from a sol-gel precursor and deposited on Indium Tin Oxide-coated glass substrate ITO using spin coating. CuO thin films, on the other hand, …

The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.langmuir.7b02840.. SEM image of a single ZnO/CuO NT, photos of CuO, ZnO, and ZnO/CuO NTs electrodes, XPS and XRD spectra of ZnO NWs and CuO NWs, Kubelka–Munk analysis, CV curves of CuO, ZnO, and ZnO/CuO NTs in 1 mM Fe(CN) 6 3– …

In the present paper, a porous octahedral (ZnO/CuO) composite is synthesized from zinc/copper-based metal-organic framework-199, and its applications in visible-light-driven photocatalytic degradation of dyes are demonstrated. The precursors of Zn-BTC, Cu-BTC, and Zn/Cu-BTC (BTC: benzene-1,3,5-tricarboxylate) were synthesized using a microwave …

This study reports the synthesis of ZnO:CuO nanocomposite in an environmental manner using Aloe Barbadansis leaf extract as a capping agent. The chemical co- precipitation method was adopted for the size controlled preparation of the composite. The prepared samples of ZnO:CuO naocomposite was characterized using Energy Dispersive Spectroscopy ...

The current study is focused on fabrication of a ternary metal oxide nanocomposite (ZnO/CuO/Ag 2 O) as an efficient and superior photocatalyst by step-wise implanting of p-type CuO and Ag 2 O semiconductors onto an n-type semiconductor (ZnO) via a chemical method. The structural and textural characteristics of the manufactured samples …

Zn and ZnO NPs solubility is higher than that of bulks [ 87, 88 ]. Thus, nanosized particles are more toxic. This is also a possible reason to explain the toxicity of CuO NPs, which exceeded that of bulk CuO by about 40-fold. Similarly, CuO NPs were 45- …

The fabrication and properties of n-ZnO nanowires/p-CuO coaxial heterojunction (CH) with a photoresist (PR) blocking layer are reported. In our study, c-plane wurtzite ZnO nanowires were grown by aqueous chemical method, and monoclinic CuO (111) was then coated on the ZnO nanowires by electrochemical deposition to form CH. To improve the device …

The CuO/ZnO materials were prepared using ZIF-8 as a MOF precursor. 0.4 g of as-prepared ZIF-8 was dispersed into 60 ml of methanol and stirred for 10 min. Then, different amounts of Cu (C 2 H 3 O 2) 2 ·H 2 O were added and the solution was stirred for another 10 min, after which it was heated to 60 °C to remove methanol.

The FTIR spectrum of nano-ZnO–CuO alginate showed a combination of bands in the spectra of ZnO NP, CuO NP, and sodium alginate. The peak observed at 3323 cm –1 in the sodium alginate spectrum has shifted to 3261 cm –1 in nano-ZnO–CuO alginate. This peak broadening is a result of the intermolecular hydrogen bonding between ZnO NP and CuO ...

Download scientific diagram | XRD pattern of commercial nanoparticles of: (a) ZnO; (b) CuO. from publication: The influence of the crystalline nature of nano-metal oxides on their antibacterial ...

In this work, CuO, ZnO and CuO-ZnO nanoparticles were prepared by a novel sol-gel route under ultrasonic condition using triethanolamine as an emulsifying surfactant. Fine powders were obtained when the pH of the sols were increased to 13 using NaOH. Particle sizes of the produced oxide materials were in the range of 3-4 nm, 40-50 x 100-150 nm ...

CuO(JCPDS Card No. 45-0937) and ZnO (JCPDScard, No. 36-1451) except for a minor peak ascribed to a amount of ZnAl 2 O 4 at 600∘C, indicating that the sample consists of CuO, ZnO and ZnAl 2 O 4 ternary complexes[11]. With further increasing the calcination temperature, the peaks of ZnO start to decrease in intensity and more ZnAl 2 O 4 is formed.

The synthesis of the ZnO/CuO nanocomposite was carried out using the co-precipitation method. The synthesized samples were characterized via the XRD, FT-IR, FE-SEM, Raman, and BET techniques. The...

The photodeposition of Ag was performed in a similar way as that described for the CuO photodeposition. In this case, the ZnO/CuO films were immersed in a quartz cell containing 15 mL of aqueous solution of 0.6 mM AgNO 3 and 1% v/v CH 3 OH. Additionally, a filter was used to cut off the ultraviolet radiation (λ < 399 nm).

10%This chapter introduces unique methodology of antibacterial activity evaluation of nanoparticles in both solution and thin films. Nanoparticles of ZnO, TiO 2, and CuO are synthesized via the sol-gel method.Antibacterial tests are carried out against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli bacteria using disk …

Through the EDX elemental mapping of a ZnO-CuO mesocrystal (Fig. 2a), it is shown that elements O, Zn, and Cu are uniformly distributed in the mesocrystal (Fig. 2b–d).The atomic ratio of Cu:Zn determined by the EDX spectrum is 1.4:1 (Fig. 2e), which is consistent with the result of ICP-OES analysis (1.46:1).N 2 adsorption analysis was performed to study the …

Download scientific diagram | XRD patterns of (a) pure ZnO, (b) ZnO/CuO (90:10), (c) ZnO/ CuO (80:20), and (d) ZnO/CuO (70:30) from publication: Sono-coprecipitation synthesis of ZnO/CuO ...

Binary solid solutions of ZnO-CuO [1, 2], CuO-NiO [3, 4], and ZnO-NiO [5, 6] and their heterogeneous mixtures [1, 7, 8] have been studied for several reasons. Due to limited miscibility of the components and their different electronic and structural features, the heterogeneous mixtures of the oxides exhibit interesting properties. CuO-ZnO ...

from publication: Synthesis of electrospun ZnO/CuO nanocomposite fibers and their dielectric and non-linear optic studies | ZnO, Nonlinear Optics and Dielectrics | ResearchGate, the professional ...

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 ...

CuO NPs were obtained by a two-step synthesis involving the photodeposition of copper onto ZnO NRs, followed by heat treatment at 500°C for 1 hour. Ag NPs were deposited photochemically onto CuO NPs.

The nanocomposites ZnO/CuO/Ext and ZnO/Ag/CuO/Ext showed distinct peaks at 630 cm −1 corresponding to CuO . Also, peaks of 890, 1020 and 1630 cm −1 can be connected with the stretching vibration of the C = O and C–O bonds of …

Босоо өнхрөх тээрэм Бөмбөлгийн тээрэмний ялгаа Босоо тээрэмдэх тоног төхөөрөмж ба үүрэг Босоо бөмбөг Тэмцээний тээрэм 8 5e The Portable Document Format (PDF) is a file format developed in the 1990s to present documents, including textterbaru ...

The development of visible-light-responsive catalysts with efficient recyclability is important for solar energy conversion applications. Here, we report a three-dimensional (3D) heterohierarchical device consisting of two-dimensional (2D) p-type narrow bandgap semiconductor CuO nanosheets and one-dimensional n-type wide bandgap semiconductor ZnO nanorods that was …

The ZnO NRs/CuO composite film exhibits significantly enlarge absorption range to visible-light and suppress the recombination rate of the photogenerated electron-hole pairs, which can be well ...

The zinc oxide (ZnO) is a popular n-type material hold absorption coefficient is ∼5 × 105 cm −1 with the energy bandgap is ∼3.34 eV [ 3, 4 ]. Both materials have high electrical conductivity and CuO is absorbs the photons of UV and visible violet regions of electromagnetic spectrum while ZnO absorbs UV light only.

The present invention relates to a kind of CuO/ZnO heterojunction structures and preparation method thereof being supported on nano fibrous membrane, which includes：S1, spinning material is provided, is configured to spinning solution, wherein spinning material includes that Kynoar and polypropylene are fine；S2, Salicylaldoxime and acetic anhydride zinc are …

Download scientific diagram | XRD patterns of CuO nanoparticles, ZnO/CuO nanocomposite synthesized using pulsed laser ablation in liquid, and standard XRD patterns of ZnO and CuO. from publication ...

The ZnO/CuO is one of the metal oxide composites. The combination of ZnO and CuO is the potential composite used to the catalyst and the anti-bacterial agent. The method used in this …

Ихэнх этанолыг дөрвөн үе шаттай процессоор боловсруулдаг: Этилийн спирт (ургамал, ургамал) нь хялбар боловсруулалт хийх үндэслэлтэй; Элсэн чихэр нь газрын гадаргаас татсан, цардуул эсвэл ...

Бөмбөлөгт тээрэм нь тэжээгч, гарц буулгадаг хэсэг, буцаж эргэх хэсэг, дамжуургын хэсэг (редуктор, жижиг дамжуургын араа, мотор, цахилгааны удирдлага) зэрэг гол хэсгүүдээс бүрдэнэ. Агаарт ...

ZnO and CuO proportion obtained from energy dispersive x-ray fluorescence. * Minimum purity declared by manufacturer . From this table it was found that both the ZnO and CuO showed 100.0 % purity. On the other hand, the CuO percentages were 0.9, 2.3 and 3.8 % respectively for the mixtures containing theoretically 1.0, 3.0, and 5.0 %.

YZ-GHX-100,。. 0.02 g CuO/ZnO 50 mL20 mg/L,,30 min； (300 W, ...

Vertically aligned ZnO nanowire-based tree-like structures with CuO branches were synthesized on the basis of a multistep seed-mediated hydrothermal approach. The nanotrees form a p-n junction at the branch/stem interface that facilitates charge separation upon illumination. Photoelectrochemical mea …

The synthesis of the ZnO/CuO nanocomposite was carried out using the co-precipitation method. The synthesized samples were characterized via the XRD, FT-IR, FE-SEM, Raman, and BET techniques. The...

Furthermore, polyaniline also enhances electron-hole stability. The CuO/ZnO hetero composite has a bandgap of 2.63 eV, while polyaniline has a bandgap of …