Synthesis, structural and optical properties of Cu …
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 …
рд-ийн zno cuo гэхэд бөөрөнцөгт үйл явц
рд-ийн zno cuo гэхэд бөөрөнцөгт үйл явц Surface Modification of ZnO Nanowires with CuO: A Tool 202145 It is a two-steps process, first is coating of ZnO …
CuO and ZnO co-anchored on g-C3
In this study, both CuO nanoparticles and ZnO nanorods were anchored on thermally-exfoliated g-C 3 N 4 nanosheets (denoted as CZ@T-GCN) via isoelectric point-mediated annealing process as a novel nano-photocatalyst towards degradation of amoxicillin (AMOX). The features of prepared materials were characterized using BET, …
Band structure tuning of ZnO/CuO composites for
There is a minor change in the XRD pattern of ZnO at low concentrations of CuO in C-1 (10% CuO). The peak of CuO in the XRD pattern of 10% CuO nanocomposites exists with very small intensity. When the concentration of CuO increased from 30% to 50%, the CuO peaks are visible at 2θ ≈ 29.35°, 38.75° and 48.55°.
ZnO/CuO photoelectrode with n-p heterogeneous structure …
The FESEM images of ZnO NR arrays, CuO film, ZnO/CuO composite are shown in Fig. 2 a–c, which were synthesized by the procedures as Scheme 1.The insets in Fig. 2 a–c are the cross-sectional view of the samples. Fig. 2 a, it can be seen that the ZnO NR arrays have a well defined hexagonal flat tops with an average diameter of 400–450 …
Cupric oxide (CuO)/zinc oxide (ZnO) heterojunction …
XRD pattern of CuO once CuO/ZnO heterojunction was formed exhibits peaks at 2θ = 35.46, 38.61, and 53.37°, which correspond to (0 0 2), (1 1 1), and (0 2 0) planes, …
The Toxic Effects and Mechanisms of CuO and ZnO …
The toxicities of CuO NPs, CuO bulk, and Cu are different, but the 30-min half maximal effective concentration (EC50) of ZnO NPs indicate that the toxic effects of ZnO NPs, bulk ZnO particles and Zn. The toxic effects of ZnO NPs on organisms were studied using different treatment routes. Because ZnO NPs are widely used in …
Green Synthesis of a CuO–ZnO Nanocomposite for Efficient
The peak at 405 nm showed no change in intensity over an hour. However, when ZnO and CuO–ZnO were added, the peak intensity at 405 nm drops, while a new peak at 300 nm emerges, confirming the 4-AP formation. CuO–ZnO NCs showed strong catalytic efficiency with reaction completion in less than 12 min (Figure Figure6 6 B,C). …
(PDF) Synthesis of 0D/3D CuO/ZnO …
The photocatalytic removal efficiency of phenol over the CuO/ZnO heterojunction is up to 78% under the irradiation of the light, which is ∼2 and ∼4 times higher than those of the pristine ZnO ...
Milling Effect on the Structural and Antibacterial Properties of ZnO …
In this work, ZnO and CuO nanocrystalline powders were prepared by method of high-energy ball milling. The milling process was performed at 450 rpm speed for 5, 10, 15, and 20 h periods of time. Structural and morphological properties of the powders were investigated by x-ray diffraction (XRD), scanning electron microscopy (SEM) and …
Synthesis, Modification, and Characterization of CuO/ZnO/ZrO
CuO/ZnO/Al 2 O 3 is a conventional composite catalyst which is widely used for methanol synthesis from syngas. Copper species are considered to be the most important active component for the hydrogenation of CO 2 to CH 3 OH. It is generally proposed that the coordination, chemisorption, and activation of carbon dioxide takes …
ZnO/CuO hybrid films synthesized by sequential …
The XRD pattern of ZnO/CuO(3) material is shown in Fig. 4c. It was seen that XRD patterns contain both of hexagonal wurtzite ZnO and monoclinic CuO …
One pot synthesis of ZnO-CuO nanocomposites for catalytic peroxidase
Fig. 2 shows the XRD patterns of as-synthesised ZnAl-(BDC) LDH, Cu-(BDC) MOF/ZnAl-LDH and ZnO-CuO nanocomposites. It can be seen from the curve (i) of Fig. 2 a that ZnAl-(BDC) LDH displays the characteristic XRD pattern typical of well-crystallized hydrotalcite-like material, showing sharp and symmetric (00 l) reflections.Representative …
CuO–ZnO nanocomposite films with efficient interfacial
CuO–ZnO nanocomposite films were synthesized through the oxidation of nanostructured Cu–Zn films deposited by vacuum deposition technique at a relatively high pressure of an inert gas. XRD patterns showed that the film samples were nanocomposites containing nanograins of CuO and ZnO and that the size of the CuO grains decreased …
Morphology Transition Engineering of ZnO Nanorods to
We have used this approach to prepare different metal oxides nanostructures like (ZnO, CuO, SnO, Fe 2 O 3, and Co 3 O 4) and we have examined their behaviors when react with polyoxometalates (POMs ...
Synthesis of ZnO and CuO nanoparticles via Sol gel method …
The XRD analysis revealed that all the synthesized particles have a crystalline nature with a particle size of 4.35 nm, 14.54 nm, 18.41 nm, and 20.50 nm of CuO NPs, ZnO NPs, 10% CuO/ZnO, and 20% ...
XRD pattern of CuO nanomaterials | Download Scientific …
The transmission electron microscope confirmed the average length and diameter of the fabricated CuO NW were ~ 450 nm ± 7 nm and 135 nm ± 5 nm, respectively. Moreover, selective area electron ...
آنالیز XRD | XRD چیست؟ | آشنایی بیشتر با طیف سنجی پراش اشعه ایکس
پراش اشعه ی پرتو ایکس یا همان طیف سنجی و آنالیز XRD چیست و چه کاربرد هایی دارد؟. XRD که مخفف X-ray powder diffraction می باشد کاربرد های زیادی در شناسایی ترکیبات موجود بر روی سطح دارد. در ادامه با ما همراه ...
Development of water-based CuO, TiO2 and ZnO nanofluids …
The present investigation elucidated the influence of nanoparticle volume fraction and temperature on the thermal conductivity and viscosity of water-based CuO, TiO2 and ZnO nanofluids. All the nanoparticles used in the present study were synthesised using the chemical co-precipitation method and their structural and morphological …
One-pot green synthesis of ZnO–CuO nanocomposite and
The diffractogram of green synthesised ZnO–CuO nanocomposite is depicted in figure 1. The XRD peaks are well-matched with the standard value of JCPDS (No. 3–888 and 5–661). From XRD pattern, it is confirmed that ZnO–CuO nanocomposite showed a well crystalline nature with no impurity peaks.
Hierarchical Sphere-Like ZnO–CuO Grown in a Controlled
A highly sensitive sensor for hydrogen sulfide based on a p–n junction between metal-oxide semiconductors is reported herein. Uniform ZnO–CuO hollow spheres were synthesized by a combination of chemical and physical methods. To deposit a uniform ZnO layer, the silicon substrate was tilted from 0° to 40° relative to the gas flow direction …
Synthesis of CuO/ZnO Nanocomposites and Their …
CuO/ZnO composites are synthesized using a simple mechanochemical combustion method. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and Fourier transform infrared (FTIR) are used to characterize the prepared oxides. X-ray diffraction reveals that the prepared CuO/ZnO …
ZnO/CuO/M (M = Ag, Au) Hierarchical Nanostructure by …
The proposed process enables to fabricate ZnO/CuO/Ag or ZnO/CuO/Au hierarchical nanostructure, having an enhanced electrical, optical, photoelectrochemical property. ... XRD spectra analysis of the ZnO/CuO hetero nanostructure, showing specific peaks of CuO and ZnO. Figure 1. (a) A schematic of the fabrication process for ZnO/CuO …
In situ XRD observation of CuO anode phase conversion in
In situ XRD observation of the CuO anode phase conversion. Figure 2 presents typical charge–discharge voltage curves for the first and second cycles of the CuO anode at 0.2 C in the voltage range of 0.01–3.00 V (vs. Li/Li +) and the cycling performance of the CuO sample.Here, the charge–discharge data in Fig. 2a, b are from two coin-type …