Photocatalytic enhancement of hybrid C3N4/TiO2 prepared ...
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 …
Perovskite gas sensor : prepared by High Energy Ball Milling
In order to compare the ball milling (BM) method with other synthesis methods, the same formulation was also obtained using sol-gel (SG) and solid-state reaction (SSR) methods. The effect of crystallite size on CO sensing performance of synthesized LaCoO3 was studied.
TiO2/CuPc hybrid nanocomposites prepared by low …
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 …
Photocatalytic enhancement of hybrid C3N4/TiO2 prepared ...
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 …
SnSb/TiO2/C nanocomposite fabricated by high energy ball ...
Compared with the SnSb/TiO 2 composite or C-coated SnSb alloy, such a C-coated SnSb/TiO 2 nanocomposite (SnSb/TiO 2 /C) shows a higher reversible capacity of 630 mA h g −1 and better capacity retention (80% over 200 cycles). Our work suggests that the mechanochemical reduction by high energy ball milling can be a powerful method to fabricate ...
(PDF) Deformation-induced reactions of ZnO and TiO 2
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 …
Frequency and temperature dependent electrical ...
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 ...
(Ti,W)C–Ni cermet prepared by high-energy ball milling …
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 …
X-ray diffraction and Möss spectroscopy of high ...
α Fe 2 O 3 /TiO 2 Composite powders have been prepared by high energy ball-milling for different times. The composites were studied using Möss Spectroscopy (MS) and X-ray diffraction (XRD). The patterns of XRD show broadening in the diffraction peaks, indicating a decrease in the particle size of the composites with milling time.
Hydroxyapatite iron oxide nanocomposite prepared by high ...
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
Photocatalytic Activity Enhancement of Anatase TiO2 by ...
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.
Influence of nickel doping on the structural, optical and ...
12%In the present work, Ni-doped TiO2 samples have been successfully prepared by high energy ball milling at different milling time. The structural, optical and magnetic properties of the samples prepared at varying time intervals were studied using X-ray diffractometer (XRD), Scanning electron microscope (SEM), Fourier transform …
Modified Titanium Dioxide for Photocatalytic Applications ...
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 ...
Mechanochemical preparation of nanocrystalline TiO2 ...
Nanocrystalline TiO2 powders were prepared by high-energy ball-milling using a zirconia vial and balls. The phase changes in the samples were monitored by Raman and X-ray powder diffraction (XRD). The milling of the starting TiO2 powder (anatase + rutile traces) induced the phase transitions to a high-presure TiO2 polymorph and rutile, and this mechanochemical …
Synthesis of visible-light reactive TiO2-xNy photocatalyst ...
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.
tio2 nanoparticle synthesis by ball milled
A ball mill is a type of grinder prepared the TiO2 nanoparticles using ball high energy ball milling in nanotechnology Microsized TiO2 activated by high energy ball Advances in Engineering Advances in Engineering features breaking research judged by AEs advisory team to be of key importance in the Engineering field.
Highly Visible Light Responsive, Narrow Band gap TiO2 ...
The prepared RP-TiO 2 was used for the characterization and ... Figure 1 presents the proposed mechanism of phosphorus doping and its interactions in TiO 2 during high energy ball milling ...
(PDF) Anatase TiO2 nanocrystals prepared by ...
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.
Hybrid CuxO−TiO2 Nanopowders Prepared by Ball Milling for ...
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.
Mechano-synthesized orange TiO2 shows significant ...
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 ...
Tailoring materials by high-energy ball milling: TiO2 ...
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. •
Synthesis, structure and sinterability of 6061 AA100−x–x ...
They have conducted high-energy ball milling under inert gas or dry air atmosphere. Use of TiO 2 as reinforcement in aluminium alloys has received a meager concentration although it possesses high hardness and modulus with superior corrosion resistance and wear resistance.
Evolution of Structural and Optical Properties in TiO2 ...
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 …
Study of Fe-doped rutile TiO2 alloys obtained by ...
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 ...
Fe-doped TiO 2 prepared by mechanical alloying - NASA/ADS
The milling conditions investigated were ball to powder weight ratio, milling time, rotation velocity of supporting disc, and the type of starting reactive iron and its concentration. X-ray diffraction shows that high energy mechanical milling of undoped anatase TiO 2 induce the anatase to rutile phase transformation via high pressure ...
Preparation by High-Energy Milling, Characterization, 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 …
"Effects of Zn Doping and High Energy Ball Milling on the ...
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.
Effect of intermediate ball milling on the synthesis of Cu ...
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), …
Novel Preparation of Fe Doped TiO2 Nanoparticles and Their ...
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 …
Nanocrystalline Oxide Ceramics Prepared by High-Energy ...
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.
(N,F)-Co-doped TiO2: synthesis, anatase–rutile conversion ...
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, …
Mechanical Preparation of TiO2 Nanoparticles and their ...
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:
Synthesis of iron-doped TiO nanoparticles by ball-milling ...
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 ...
Photocatalytic antibacterial properties of copper doped ...
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 …
Structural characterization and ferromagnetic behavior of ...
Abstract. Fe-doped TiO 2 powder was prepared by high-energy ball milling, using TiO 2 Degussa P-25 and α-Fe powders as the starting materials. The structure and magnetic properties of the Fe-doped TiO 2 powder were studied by X-ray diffraction, 57 Fe Moss spectroscopy and vibrating sample magnetometer. The Reitveld refinement of XRD revealed that ball …
Deformation-induced reactions of ZnO and TiO2 | SpringerLink
Reactions of ZnO and TiO2 (anatase and rutile) in different mole ratios induced by high-energy ball milling were studied by X-ray diffraction. It was found that three main reactions could involve during high-energy ball milling: (1) (4 − X)ZnO + (2 + Y) TiO2 (anatase or rutile) → Zn4−X Ti2+Y O8; (2) ZnO + TiO2 (rutile) → ZnTiO3, and (3) TiO2 (anatase) → TiO2 (II) → TiO2 …