12%We prepared various nanocrystalline ceramics by high-energy ball milling. The investigated systems are the oxide ceramics Li 2 O, LiNbO 3, LiBO 2, B 2 O 3, TiO 2 as monophase materials and the composite material Li 2 O : B 2 O 3. The average grain size was adjusted by variation of the milling time.

TiO2 photocatalysis is been widely studied for air and water purification applications; titanium dioxide is the most used semiconductor principally because its low cost, stability and chemical properties. However it only utilizes the UV portion of the solar spectrum as an energy source (less than 4% of the total sunlight energy). This behavior is due to its high band gap value of 3.2 eV.

2.1. Preparation of Nanosized Titania powder/ Ni-P/ Ni-P-TiO 2 Nanocomposite Coatings The nanosized titania powder was prepared by mechanical milling using high energy planetary ball mill at 250 rpm with ball to powder ratio 10:1. Micron-sized titania powder (the particle size:

Mixed TiO2–α-Fe2O3 powders with 10 at% of Fe were prepared by high-energy ball milling. The influence of the preparation method was studied by Möss spectroscopy, X-ray diffraction and ...

Characterization and high pollutant removal ability of buoyant (C, N)–TiO 2 /PTFE flakes prepared by high-energy ball-milling. RSC Adv. 2014, 4 (75), 40019. DOI: 10.1039/C4RA06496H. Po-Chin Chen, Min-Chiao Tsai, Min-Han Yang, Ting-Ting Chen, Huang-Chin Chen, I.-Chun Chang, Yi-Chun Chang, Yu-Liang Chen, I.-Nan Lin, Hsin-Tien Chiu, Chi …

This study evaluates the impact of industrially prepared TiO 2 nanoparticles on the biological system by using an in vitro model of colon cancer cell lines (HCT116). Industrial synthesis of titanium oxide nanoparticles was mimicked on the lab scale by the high-energy ball milling method by milling bulk titanium oxide particles for 5, 10, and 15 h in an ambient environment.

Iron-doped TiO 2 nanoparticles were prepared by ball milling of TiO 2 powders (nanometer size) in a high-energy Planetary Ball Mill PM 400/2 (RETSCH, Germany) in the presence of fine Fe powder. Milling was done at room temperature in a polytetra-fluoroethylene (PTFE) vial (volume about 35 cm3) using ten hardened steel balls with 10 mm of ...

TiO_2。. The nanocrystalline powders of Tb_4O_7-18wt%Ti O_2 were prepared by high energy ball milling. Systematical investigations were carried out on microstructure, particle and grain size, lattice distortion and morphology of the Tb_4O_7-18wt%Ti O_2 milled ...

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

Nitrogen and fluorine co-doped Ti-oxide, TiO1.9N0.05F0.15 (TiO2(N,F)), with the anatase structure is prepared by the pyro-ammonolysis of TiF3. For the first time it is shown that TiO2(N,F) and anatase-TiO2 are converted to nanosize-rutile structure by high energy ball milling (HEB). The polymorphs are characterised by X-ray diffraction, Rietveld refinement, …

The reaction was performed in high-energy ball mill using steel and corundum jars, respectively. The final products were obtained by annealing the milled powder in the temperature range of 300–700 1C and subsequently by washing out the water-soluble byproduct Na2SO4 xH2O.

tio2nanopowders and cu-doped tio2were prepared by high-energy ball milling and characterized by x-ray diffraction (xrd), uv–vis diffuse reflectance (uv–vis - drs) spectra, a scanning electron microscope (sem), an energy dispersive spectrum (eds) and an x-ray photoelectron spectrometer (xps) to study the effect of cu doping amount, milling time …

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. •

Low-energy ball milling process was operated by conventional horizontal ball milling process. For ball-milled conditions, several zirconia balls with diameter 1.47 and 5.36 mm were contained in the cylindrical plastic vial of height 7.7 cm and inner diameter 4.5 cm. Ethanol was used as disperser for blending two materials.The milling process continuously operated …

High-energy vibratory ball milling (Super-Misuni, Nissin Giken Co. Ltd.) was employed, with a rotational speed of 710 r.p.m., where the milling atmosphere was ambient. The powders and zirconia balls (ϕ10 mm) were charged in a stainless steel vial (ϕ100 mm), where the ball-to-powder weight ratio was 18 : 1 (18 g balls per 1 g powder) and the ...

C 3 N 4 /TiO 2 hybrid photocatalysts with highly enhanced photocatalytic performance were prepared by a facile ball milling method. A layered structure of g-C 3 N 4 was formed on the surface of TiO 2.The mechanochemical process can promote the dispersion of C 3 N 4 on the surface of TiO 2 particles, to form a single layer hybrid structure and a multi-layer core–shell …

Hydroxyapatite/iron oxide nanocomposite prepared by high energy ball milling Milica Vuciniˇ ´c Vasi c´1,∗, Bratislav Antic´2, Marko Boškovic´2, Aleksandar Anti´c1, Jovan Blanuša2 1Faculty of Technical Sciences, University of Novi Sad, Trg D. Obradovica 6, 21000 Novi Sad, Serbia

A series of TiO 2 powder in anatase form was ball milled at a speed of 300 rpm at room temperature and ambient pressure with ball-to-powder weight ratio 10:1 for different milling time. Evolution of the structure and microstructure of the powder with milling time was studied by X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Photoluminescence …

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), …

A single-phase (Ti,W)C solid solution was prepared by high-energy ball milling of TiO 2 –Ti–WO 3 –C powder mixtures with various TiO 2 /Ti ratios and subsequent carbothermal reduction. Thermodynamic calculations suggest that the reaction pathways would follow the sequences WO 3 →WC, TiO 2 →Ti 2 O 3, Ti(CO)→TiC, Ti 2 O 3 →TiC, and …

Nanocrystalline Mg2Ni powders produced by high energy ball milling (HEBM) were subjected to further severe plastic deformation by cold rolling (CR) or equal-channel angular pressing (ECAP). The microstructure of the alloys have been analysed by the Convolutional whole profile fitting method of the X-ray line profiles. The hydrogenation behavior has been studied by absorption …

Abstract. We employed high-energy ball-milling technique to fabricate TiO/ heterogeneous nanostructures. XRD proved the existence of TiO/ heterogeneous structures. SEM and HRTEM investigation evidenced that the mean particle size and mean grain size of the as-prepared samples are 23 nm and 13 nm, respectively.

N2 - Yellowish TiO2-xNy was prepared by a novel mechanochemical nitrogen-doping method. The samples were prepared by a high-energy ball milling of P25 titania with different nitrogen sources such as hexamethylenetetramine, urea or ammonium carbonate, followed by calcination in air at 400 °C.

Iron doped TiO 2 nanoparticles were prepared by ball milling of TiO 2 powders (TiO 2 P25) in a high-energy ball mill in the presence of fine FeCl 3 powder using Al 2 O 3 balls. The slurry was prepared by mixing TiO 2 powder and iron chloride in DI water in …

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 …

Cubic Zn4−X Ti2+Y O8 nanocrystals with an average crystal size of about 15 nm can be prepared by high-energy ball milling, which could be an attractive process to …

CaTiO3 ceramic powders were prepared by high-energy ball milling technique. In this technique, CaO (99.9%) and TiO2 (99.95%) were used as starting materials. Stoichiometric amounts of these materials were weighed. The high-energy ball milling of these weighed powders was done in Retsch High Energy ball mill. Initially, the weighed powders were ...

Doping of TiO 2 nanoparticles with Li, Na, Mg, Fe and Co by high energy ball milling with the metal nitrates was found to widen the TiO 2 visible light response range. In the Na-doped sample, Ti existed as both Ti 4+ and Ti 3+ and the conversion between Ti 4+ and Ti 3+ was found to prevent the recombination of electrons and (e − ) and holes ...

Hybrid CuxO−TiO2 Nanopowders Prepared by Ball Milling for Solar Energy Conversion and Visible-Light-Induced Wastewater Treatment American Chemical Society, 2019 P. Basnet, Ph.D.

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 ...