آخرین محصولات
Nanocrystalline/nanoparticle ZnO synthesized by high energy ball …
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.
Processing of Cu–Al2O3 metal matrix nanocomposite
Fig. 1 shows XRD patterns of the powders produced after different stages of milling the Cu–Al powder mixture with a composition of 14at.%Al. After ball milling for 1 h, both Al and Cu peaks are present in the XRD pattern, as shown in Fig. 1 (a). The position of Al and Cu peaks remain the same as those of pure Al and Cu phases, and no new peaks were observed.
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Structure and catalytic behaviour of CuO–CeO2 prepared by …
In addition, Castricum et al. report that the milling process of mixed Cu, Cu 2 O or CuO and ZnO in synthetic air results in oxidation of Cu precursors, while, under vacuum, it results in reduction. They also report that the mechanochemical reactions are promoted by mechanical milling in the presence of ZnO .
Nanocrystalline/nanoparticle ZnO synthesized by high energy ball …
Semantic Scholar extracted view of "Nanocrystalline/nanoparticle ZnO synthesized by high energy ball milling process" by S. Amirkhanlou et al.
ZnO/biochar nanocomposites via solvent free ball milling …
The SEM images of BB and BZ-25% show that the micromorphology of both biochars is inhomogeneous porous structure with roughened surface (Fig. 1 a-b).ZnO nanoparticles, appeared as white ultrafine particulates, are uniformly scattered on BZ-25% after ball milling (Fig. 1 b).The amount of the ZnO nanoparticles on the BZ-0%, BZ-25%, BZ-50% …
CuO/ZrO2 co-promoted by ZnO, Sn, and CuP shows high …
The trend of specific activities is similar to that observed for M2 selectivity. As seen clearly, CuO/ZrO 2, CuO-ZnO/ZrO 2, CuO-ZnO-CuP/ZrO 2, and CuO-ZnO-Sn-CuP/ZrO 2 catalysts show increased activity, reaching the maximum at 8 h, while the maximized activity of CuO-ZnO-Sn/ZrO 2 catalyst is achieved at 16 h. It implies that the Sn species may ...
Reduction-oxidation of V2O5-WO3 nanostructured by ball milling …
Generally, MM process lowers the reaction temperatures. The (V,W,Ti)CN ceramic powder was synthesized using a ball milling process followed by nitridation at 700 °C which was selected based on the thermal analysis results [17]. It was evident that nitridation retards the crystalline growth during annealing.
Investigation of structural, morphological and NTCR …
Up to 3 at% of Cu could be doped in ZnO via ball milling, beyond which Cu precipitates as CuO during calcination. The ac conductivity values decrease by Cu doping in …
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.
A simple ball milling method for the preparation of p-CuO/n-ZnO …
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.
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 transmission …
The role of Mg content in regulating microstructures and …
The Al powders and x wt.% Mg (x = 1, 3, 5 and 7) powders were initially ball-milled using a planetary ball mill machine with a rotation speed of 500 rpm for 8 h in a stainless-steel jar filled with high-purity argon atmosphere, Afterwards, the 7 wt% ZnO powders were added into the stainless-steel jar in the glove box filled with argon gas to ...
Synthesis of Zno Nanoparticles Using Ball Milling Method
From the XRD pattern, it is suggested that these nanoparticles are crystalline in nature. The UV visible spectrum shows a broad peak at 380 nm, which is a characteristic of ZnO. KEYWORDS: Synthesis of ZnO nanoparticles; Ball milling method
Degradation characteristics of dioxin in the fly ash by …
Presently the study for the process of firstly washing to recover useful metals in fly ash and then degrade dioxin by ball-milling was less, the mechanism of ball-milling was not yet clear, mechanochemical dehalogenation processes mostly was limited in the stage of theory or experiment [20]. Moreover, stainless steel balls rusted easily because ...
Enhanced photocatalytic performance of Cu2O nano …
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), …
(PDF) Structural, optical and dielectric study of Cu doped ZnO
Abstract: Cu doped ZnO nanoparticles abbreviated as Zn1–xCuxO (x = 0, 0.01 and 0.03) were synthesised by high energy ball milling (HEBM) technique.
Influence of Ball Milling Parameters on the Densification Process …
ZnGa2O4 transparent ceramics were prepared in this work using commercial ZnO and Ga2O3 powders through a solid-state reaction and pressureless presintering comb. ... Copy DOI. Influence of Ball Milling Parameters on the Densification Process of Znga2o4 Transparent Ceramics. 10 Pages Posted: 5 Mar 2024. See all articles by Yupei Xing
Synthesis of TiO2 nanoparticles by a combined sol–gel ball milling
TiO 2 nanoparticles were synthesized by a sol–gel method and the effect of ball milling of dried gel on the particle size has been investigated. The results show that the ball milling has a crucial role in preparation of nanosized TiO 2 powder. Also thermal treatment at different temperatures can control the size of prepared nanoparticles.The photocatalytic …
Ball milling synthesis of CuO pure and V2O5 doped …
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.
Nanocrystalline/nanoparticle ZnO synthesized by high energy ball
High energy ball milling process could be an alternative for preparing nanosized powders [9], [10]. This study aims to investigate the feasibility of producing simultaneous nanocrystalline and nanoparticles ZnO powder particles using high energy ball milling process.
Zn-based MOFs materials fabricated by mechanochemical ball milling …
Next, the paste powder was taken to the ball mill and placed in a zinc cup, the zinc mill balls with a diameter of 1 mm were placed in the cup. The cups were sealed and placed into a lab made ball-mill. The milling cycles were performed, consisting of a 4 stage in 30 min run, followed by a 10 min pause before the next run.
Milling Effect on the Structural and Antibacterial Properties …
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, …
Methanol synthesis over Cu/ZnO catalysts prepared by …
Cu/ZnO catalysts (with a Cu/Zn atomic ratio of 30/70) have been prepared by high intensity mechanical mixing of copper ... It should be noted that the process of ball milling is sensitive to the intensity of the milling action, which in turn is influenced by experimental
Sci-Hub | Synthesis of ZnO nanoparticles by Ball-milling process …
Wirunchit, S., Gansa, P., & Koetniyom, W. (2021). Synthesis of ZnO nanoparticles by Ball-milling process for biological applications. Materials Today: Proceedings ...
Large-scale production of ZnO nanoparticles by high energy …
Nanoparticles were obtained by the high-energy ball milling method using commercial polycrystalline ZnO powder with 99.9% purity provided by Nanomateriales SA de …
Effect of Ball Milling on Formation of ZnAl2O4 by Reduction Reaction of
[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 ...
Synthesis of ZnO nanoparticles using Ball milling method
Zinc oxide nanoparticles are fabricated using Ball milling method. For the synthesis of these nanoparticles, 99.9% pure zinc oxide powder is milled for 40 hours.
Methanol synthesis over Cu/ZnO catalysts prepared by …
In this paper we investigated the influence of the gas phase and milling time on the activity of mechanically mixed Cu^ZnO catalysts in the methanol synthesis reac-tion from a H2/CO/CO2 …
Rapid preparation of AlFeO3/ZnO bulk heterojunctions …
ZnO is known to be an n-type material [11].AlFeO 3 has been previously reported as a p-type material [12].Hence, an AlFeO 3 /ZnO heterojunction is a p-n heterojunction whose depletion region can be used for effective separation of photogenerated charge carriers. ZnO is a well-known photocatalyst and the mobility of electrons in ZnO nanomaterials is higher than …
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