Comparing the lattice parameters from Tables 1 and 2, it seems that the substitution of Cu in ZnO occurs during ball milling itself. The mechanical and thermal energy produced during ball milling is sufficient for this process to occur over the 10 h duration of milling. The calcination step helps in relaxing the stress developed during ball ...
In this work, we present fabrication and characterization of zinc oxide (ZnO) nanoparticles with crystallite sizes from 26 nm to 22 nm. Commercial ZnO powders were subjected to milling in …
Here, ZnO powder (99.999 % pure) is milled for 40 hours in 250 ml stainless steel jar using 10 balls. Powder X-ray diffraction (XRD) is performed by a Regaku X-ray diffractometer Ultima IV …
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.
Five oxides (NiO, MgO, CoO, CuO, and ZnO) were weighed in equimolar ratios and placed in an agate ball milling jar with agate balls at a ball-to-powder ratio of 10:1. The pristine materials were ball milled using a planetary ball mill machine (QM-3SP2, Nanjing University Instrument Plant) at a rotational speed of 200 rpm for 5 h.
ball-milling technique. There are some major differences between conventional ball milling and the high-energy ball milling. The impact energy of HEBM is typically 1000 times higher than the conventional ball milling energy. The main jobs of the conventional ball milling is the particle fracturing and size reductions, which correspond only to the
Nanoparticles were obtained by the high-energy ball milling method using commercial polycrystalline ZnO powder with 99.9% purity provided by Nanomateriales SA de …
The p–n junction photocatalyst, p-CuO/n-ZnO, was prepared via ball milling of ZnO and CuO nanoparticles in water. The structural, optical, and surface properties of the p–n junction ...
The CuO nanoparticles doped with 0, 1 and 3 wt% Zinc oxide have been prepared by ball milling process for 24 hrs followed by heat treatment for 4 hrs at 500 °C.
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 …
In the Rochow-Müller reaction, CuO/ZrO 2 co-promoted by ZnO, Sn, and CuP is prepared by a simple dry ball-milling method. The Co-promoter significantly facilitates the …
Synthesis of ZnO and CuO nanoparticles via Sol gel method and Its Characterization by using XRD and FT-IR Analysis ... XRD result shows the particle size of CuO at highest peak 29.4014 ⁰ was 61. ...
Doping ZnO nanoparticles with Fe 3+ via high energy planetary ball milling process. ... Based on the XRD standard card of ZnO (JCPDS No. 36–1451), it matches well. Using the Debye-Scherrer equation [44], the average grain size of nanoparticles synthesized at 400 and 800 °C was calculated to be 17.4 nm and 36.1 nm, respectively. It can be ...
As can be seen in Fig. 2, after 2 h of ball-milling, no new peaks were seen in the XRD pattern i.e. no detectable chemical reaction has occurred. But after 3 h of ball-milling, the peaks corresponding to the starting materials have disappeared and new peaks corresponding to α-brass and α-Al 2 O 3 can be seen. This fact indicates that the reaction occurs as an SHS …
This research is focus on the synthesis ZnO nanoparticles (ZnO NPs) with the difference calcined temperatures by Ball-milling technique that was characterized by …
The p-n junction photocatalyst, p-CuO/n-ZnO, was prepared via ball milling of ZnO and CuO nanoparticles in water. The structural, optical, and surface properties of the p-n junction photocatalyst p-CuO/n-ZnO were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-Vis spectroscopy, and Zeta potential analyzer.
In this work, high energy ball milling (HEBM) technique has been employed to successfully synthesize a series of Cu-doped ZnO nanoceramics (Zn 1-x Cu x O) with Cu concentration x = …
Nanoparticles of zinc oxide (ZnO) are increasingly recognized for their utility in biological applications. In this study, the high-energy ball milling (HEBM) technique was used to produce ...
[Show full abstract] high-energy ball milling process after milling for 30h. Significant crystallization of SrAl2O4 from the amorphous state milled for 30h is observed after annealing at 900 ...
Semantic Scholar extracted view of "Nanocrystalline/nanoparticle ZnO synthesized by high energy ball milling process" by S. Amirkhanlou et al.
After ball milling, compared to pure ZnO (x = 0) (Fig. 1(a)), the XRD patterns of the Cu doped samples (Fig. 1(a) x = 0.01–0.04) show lower peak intensity and broader peak-width (full width at half maximum, FWHM) that increases with increase in the
The study reported that the particle size of 175 to 250 µm (2 h), 100 to 400 µm (4 h), and 75-100 µm (6 h) with a ball-to-powder weight ratio of 10:1 at a milling speed of 350 rpm.
Fig. 1 b shows the XRD patterns of the ZrO 2 sample and all the catalysts. ... revealing that ZrO 2 was covered by CuO after the ball milling process making more Cu active sites exposed. 3.1.4. ... For the CuO-ZnO/ZrO 2 catalyst, since ZnO and ZrO 2 are not reducible below 300 °C individually ...
In this paper, a ball milled Cu 2 O-ZnO nano-photocatalyst with good photocatalytic performance in visible light range was prepared. Effect of ZnO presence and ball milling of Cu 2 O on the structure, microstructure, optical properties and photocatalytic performance were studied. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), …
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 transmission …
A new approach termed soft sol–gel combustion synthesis (SSCS) is introduced. • Combustion of Cu(II)–melamine in O 2-lean condition yields mixed valent composition.. Melamine is repurposed as a fuel, via g-C 3 N 4, forms red-hot coke in the SSCS. Composites comprising ZnO, CuO, Cu 2 O, Cu, and g-C 3 N 4 in a single-step is achieved.. Such composites are …
Figure 3 indicate the whole process of synthesis of ZnO and CuO nanoparticles by sol-gel process. Page 4/13 3.3 Characterization of ZnO and CuO Nanoparticles: The characterization of synthesized nanoparticles was done by following analytical techniques, such as Fourier Transform Infrared Spectroscopy (FTIR), Xray Diffraction (XRD).
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, …
Both ZnO-CuO and ZnO-CuO-Ag nanocomposites exhibited a Z-scheme mechanism for charge transfer proposed based on the radical scavenging experiments. Superoxide radicals were the main active species ...
Download scientific diagram | (a) XRD patterns of unmilled ZnO, ZnO milled for 5 h, and ZnO/layered carbon nanocomposites milled for 5 h with varied amount of carbon. (b) Variation of average ...
In this work, we propose the synthesis of ZnO nanostructures through the thermal oxidation of ball-milled powders with the introduction of Mg and Sn doping species at the preliminary step of milling. We investigate the …
2.2. Characterization. The phase structure and microstructure of the synthesized ZnO–CuO nanocomposite coating were characterized by XRD analysis (Philips with Cu K α radiation, λ = 1.54 Å) and FESEM (MIRA3 TESCAN) equipped with energy-dispersive X-ray spectroscopy (EDX; JEOL, Centurio), respectively. The microstructure of the ZCt30 sample …
Sapkota and S. R. Mishra [19] utilized a ball milling process to fabricate CuO/ZnO nanocomposites. Additionally, Mn-Ni powders were synthesized through a ball milling process by Mbarek et al. [20
1. Introduction. Many materials used in outdoor are deteriorated by moisture, fungi, bacteria, weathering, and ultraviolet radiation [1].The use of UV stabilizers, surface treatments, or coatings have been developed to mitigate these effects [2].ZnO is a well-known semiconductor oxide (SO), with n-type character and wide bandgap (~3.3 eV), low cost, and …
Fig. 1 represents XRD patterns of ZnO powder particles before and after milling in different milling times. All Bragg peaks of XRD patterns show only ZnO reflections, indicating that there is no phase transformation during the milling. ... As a result of ball milling process, ZnO powder particles readily achieved a nanocrystalline structure ...
In summary, ZnO nanopowders were prepared by high energy ball milling process. ZnO particle size was reduced from 500 nm to 250 nm after milling process at 500 rpm in 10 min due to mechanical force with ball and material mechanism. XRD patterns of ZnO nanoparticles exhibit single phase of ZnO hexagonal structure without any impurities.