p-n junction photocatalyst Cu2O/TiO2 was prepared by ball milling through doping Cu2O into TiO2 and using H2O solution as disperser. The p-n junction photocatalyst Cu2O/TiO2 was characterized by UV-Vis diffuse reflection spectrum, Scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).
In this work, TiO2 powders were prepared by high energy vibrating ball milling. X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Photon cross correlation spectroscopy (PCCS with Nanophox) were used to determine the crystallite size of anatase TiO2. Depending on the grinding conditions (short grinding time, ball diameter, stainless steel ball and grinding powder …
High-energy ball-milling of Al2O3-13wt%TiO2 and Al2O3-44wt%TiO2 powders have been studied and more precisely the effect of the addition of a …
DOI: 10.1016/j.crgsc.2021.100236 Corpus ID: 244915748. Ball milling – A green and sustainable technique for the preparation of titanium based materials from ilmenite @article{Thambiliyagodage2021BallM, title={Ball milling – A green and sustainable technique for the preparation of titanium based materials from ilmenite}, author={Charitha Thambiliyagodage …
In this paper, Cu-doped TiO2 powder was prepared by sol–gel method and the influence of 1 h intermediate ball milling before calcination on different properties was investigated. The powders were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), differential thermal analysis (DTA), diffuse reflectance spectroscopy (DRS), …
into smaller sizes after 1 hr ball milling (Figure1(b)). However, they became severely agglomerated after ball milling for 3 hrs as can be seen in Figure 1(c). The size Figure 1 SEM images for planetary-milled TiO2(B) powders with 300 rpm and various milling times. (a) as-prepared TiO 2(B), (b) 1 hr ball-milled TiO 2(B), and (c) 3 hrs ball ...
Titanium Aluminide based composites with Al2O3 reinforcement can be produced via reaction of Al with TiO2. These composites are considered as low price materials for high temperature applications. In this research, the effect of ball milling on 3TiO2/7Al system was investigated. On the basis of obtained results, ball milling for 0 to 60 h does not lead to reduction of TiO2 by …
In this work, TiO2 nanoparticles were successfully synthesized with narrow size distribution via a wet ball milling sol-gel method. The effect of calcination temperature on photocatalytic activity was observed from particle size, crystallite size, and phase transition of TiO2 nanoparticles. Increasing calcination temperature increased particle size, crystallite size, and the crystallinity …
In this work, Ball Milling is investigated as a viable synthesis method for highly crystalline TiO 2 -ZnO composites. The composites were verified using various standard techniques. XRD measurements confirmed the presence of hexagonal wurtzite ZnO and tetragonal TiO 2 nano particles.
The effects of Y 3+ mole fraction, ball-to-powder weight ratio, milling time and milling rate on the photocatalytic activities were evaluated by the degradation of methylene blue () under UV light. Then Y 3+ /TiO 2 photocatalysts prepared at the optimized ball milling conditions were applied to treat shrimp wastewater under UV and visible light.
In this research work, TiO2 nanoparticles were doped with iron powder in a planetary ball-milling system using stainless steel balls.
Nitrogen and carbon co-doped TiO2 particles with a brilliant yellow-orange color were produced mechanochemically by high-energy ball milling as one-pot synthesis. This facile synthesis required ...
The influence of hierarchical TiO2 inclusions on electrical and thermal transport properties has been investigated in the Ba-filled skutterudite compound Ba0.3Co4Sb12 synthesized by ball milling followed by hot pressing. The hierarchical TiO2, with the morphology of nanocrystallite aggregates, was prepared u
The ball milling process promotes phase transition of TiO2 from anatase to rutile and yields ternary heterojunction of the type TiO2(A)/TiO2(R)/ZnO and TiO2(A)/TiO2(R)/SnO2 (A …
A rational design of TiO 2 catalyst supports by high-energy ball milling is presented. • Mixtures of titania phases were obtained due to polymorphic transformation. • Milling process increases oxygen vacancies, reducibility and oxygen mobility. • Unusual TiO 2 (II) phase remains stable even under extreme conditions. •
Abstract CdS/TiO2 composite photocatalysts were made by the method of secondary ball milling at different ball milling speeds, milling time, and material ratios. After the secondary ball milling process, parts of the samples were calcined at high temperatures. X-ray diffraction (XRD) and UV-Vis diffuse reflectance spectroscopy (DRS) were used to observe the powder particle size, …
High-energy ball-milling initiates a solid state reaction in an equimolar mixture of TiO2 and ZrO2. The first stage of ball-milling induced the transformation of anatase TiO2 to high-pressure phase TiO2 (II), isostructural with ZrTiO4. The formation of solid-solutions monoclinic ZrO2/TiO2 and TiO2 (II)/ZrO2 was observed in intermediate stage.
Nano Y 2 O 3, TiO 2, ZrO 2 dispersed W-Ni-Nb-Mo alloys are synthesized by mechanical alloying with varied ball to powder ratio. • Minimum crystallite size, maximum lattice strain is achieved in 20 h milled W-Ni-Nb-Mo-Y 2 O 3 alloy with 10:1 BPR. •
The ball milling used to prepare composites with TiO 2 and MWCNT was a Retsch MM200 equipped with zirconium oxide balls and grinding jars [32]. The concentration of TiO 2 in the composite was always the same (90% wt.). The selected composition was based on the results of previous research [33].
The different size of TiO 2 powders were obtained by controlling the time of ball milling. It is expected that this work may be useful in the applications of TiO 2 filled PTFE composites in practice. 2. Experimental. 2.1. Materials. The raw materials used were rutile TiO 2 powder and PTFE aqueous dispersion (TE-3865C, Dupont, USA ...
In this study, a Ni–TiC composite was synthesized by the carbothermic reduction of activated NiO/TiO2/C powder mixture. The effect of 0-, 2-, 5-, and 10-h ball milling of the sample on the reduction process was investigated. Results of XRD pattern from milled samples showed that no reaction occurred between NiO, TiO2, and carbon due to milling. FESEM …
titanium dioxide ball mill grinding mill stirred ball Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Withdrawn Application number EP16000192.1A Other languages German (de ...
After the ball milling process of the TiO 2-C, the isotherms of the TiO 2-C300 and TiO 2-C500 samples remain almost unchanged, and also the pore size distribution curve showed only a small decrease in the pore region between 10 and 40 nm, causing a pore volume decreasing from 0.28 to 0.26 cm 3 g −1, as shown in Figs. 8a, 9a, and Table 2.
CaAl2O4:(Eu, Nd)/TiO2-xNy composite luminescent photocatalyst was successfully synthesized by a simple planetary ball milling process. Improvement of photocatalytic deNOx ability of TiO2-xNy, together with the persistent photocatalytic activity for the decomposition of NO after turning off the light were realized, by coupling TiO2-xNy with long afterglow phosphor, CaAl2O4:(Eu, …
In this paper, we used a facile ball milling, microwave radiation and heating treatment method to achieve the surface modification of TiO2 with low g …
TiO2-coated boron particles were prepared by a wet ball milling method, with the particle size distribution and average particle size being easily controlled by varying the milling operation time. Based on the results from X-ray photoelectron spectroscopy, transmission electron microscopy, energy dispersive X-ray analysis, and Fourier transform infrared …
In order to facilitate TiO2(B)/C composites fabrication, the synthesized TiO2(B) particles were crushed into smaller sizes by ball milling. Ball mill treated TiO2(B) particles of less than 1.0 μm with a fraction of anatase phase, compared to as-synthesized ...
In this work, we aim to reduce the crystal size of anatasetype TiO 2 powder - using a high-energy ball mill for the study of heat storage materials. 2. Experimental 1) Milling process: High purity (99.8%) anatase type TiO 2 (IV) powder was used in the present study. The 10 g powder sample was placed in a dry
TiO2 anatase plays a central role in energy and environmental research. A major bottleneck toward developing artificial photosynthesis with TiO2 is that it only absorbs ultraviolet light, owing to its large bandgap of 3.2 eV. If one could reduce the bandgap of anatase to the visible region, TiO2-based photocatalysis could become a competitive clean energy source. Here, using …
C3N4/TiO2 hybrid photocatalysts with highly enhanced photocatalytic performance were prepared by a facile ball milling method. A layered structure of g-C3N4 was formed on the surface of TiO2. The mechanochemical process can promote the dispersion of C3N4 on the surface of TiO2 particles, to form a s …
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