Characterization of calcined kaolin/TiO2 composite particle material prepared by mechano-chemical method

Sericite-TiO2 composite particle material was prepared via mechano-chemical method. SEMEDS and XPS ananlysis indicates that the surface of the sericite were coated by the TiO2 layers and the Ti4+ cations were anchored by formation of SiOTi bonds. Otherwise, the TiO2-coated sericite powders have higher light scattering indexes and other more outstanding properties than the naked sericite powders. Especially, the whiteness, adsorbed value, and hiding power indexes of the rutile TiO2-coated sericite powders were higher than those of the anatase TiO2-coated sericite powders. Hence, rutile TiO2-coated sericite powders can be substitute for the titanium dioxide pigment.

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CHARACTERIZATION OF TALC/TiO2 COMPOSITE PARTICLE MATERIAL PREPARED BY MECHANO-CHEMICAL METHOD

Surface Review and Letters ◽

10.1142/s0218625x2050047x ◽

2020 ◽

pp. 2050047

Author(s):

YU LIANG ◽

WEIHUA AO ◽

HAO DING ◽

KAI SHEN

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Photoelectron Spectroscopy ◽

Chemical Method ◽

Composite Particle ◽

Composite Particles ◽

X Ray Diffraction ◽

X Ray ◽

Scanning Electron

Talc/TiO2 composite particle was prepared with TiO2 coating on the surfaces of the talc particles by mechano-chemical method. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to investigate the microstructures and morphologies of the composite particles. The mechanism of the mechano-chemical reaction was researched by infrared spectra (IR) and X-ray photoelectron spectroscopy (XPS). The prepared talc/TiO2 composite particle has similar pigment properties compared with TiO2, with its hiding power 10.45[Formula: see text]g/cm3 and whiteness 97.49%. The results show that TiO2 coated evenly on the surfaces of the talc particles by Si–O–Ti and Mg–O–Ti bonds through surface dehydroxylation reaction.

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CHARACTERIZATION OF BRUCITE/TiO2 COMPOSITE PARTICLE MATERIAL PREPARED BY MECHANO-CHEMICAL METHOD

Surface Review and Letters ◽

10.1142/s0218625x18500853 ◽

2018 ◽

Vol 25 (04) ◽

pp. 1850085 ◽

Cited By ~ 6

Author(s):

YU LIANG ◽

HAO DING ◽

QIANG XUE

Keyword(s):

Titanium Dioxide ◽

Electron Microscope ◽

Reaction Mechanism ◽

Chemical Method ◽

Composite Particle ◽

Composite Particles ◽

X Ray Diffraction ◽

X Ray ◽

Scanning Electron

Brucite/TiO2 composite particle was prepared with Titanium dioxide (TiO2), coating on brucite particles’ surfaces by mechano-chemical method. X-ray diffraction (XRD), scanning electron microscope (SEM) and infrared spectra were used to investigate the microstructures, morphologies of the composite and the reaction mechanism. The results show that the ground extent of brucite as well as the mixed particles of brucite and TiO2 should keep at a suitable state. The hiding power and whiteness of the composite particles are 17.24[Formula: see text]g/m2 and 96.88%, respectively, presenting its similarity to TiO2 in pigment properties. TiO2 coats evenly on the surfaces of brucite through surface dehydroxylation reaction during mechano-chemical method.

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Structural Characterization of Two Novel Oxidative Derivatives of Cyclosporine Generated By a Chemical Method

Clinical Biochemistry ◽

10.1016/s0009-9120(98)00014-9 ◽

1998 ◽

Vol 31 (3) ◽

pp. 173-180 ◽

Cited By ~ 3

Author(s):

WingT Liu ◽

Kirk Marat ◽

Ying Ren ◽

RonaldT Eng ◽

PuiY Wong

Keyword(s):

Structural Characterization ◽

Chemical Method ◽

Derivatives Of

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Manufacture of the Glass Nanopore Based on Laser Heating and Experimental Research

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.851.244 ◽

2016 ◽

Vol 851 ◽

pp. 244-248

Author(s):

Ya Fei Zhang ◽

Zhi Yuan Yao ◽

Bi Cheng Wu

Keyword(s):

Laser Heating ◽

Chemical Method ◽

Physical Method ◽

Experimental Basis ◽

Generation System ◽

Glass Capillary ◽

Linear Ultrasonic Motor ◽

Capillary Tension ◽

Through Hole

The glass nanopore produced by the physical method has better physical characteristics, higher strength, stronger stability, longer life and other significant features compared with the chemical method. The purpose of this paper is to study DNA sequencing (973 project) to provide experimental basis for preparation of glass capillary 5nm 3D nanochannel In this paper, we design a set of glass capillary tension system which is controlled by laser heating and linear ultrasonic motor and produced successfully the device for the preparation of nanopore below 50 nm. In addition, the use of micro droplet generation system has carried out preliminary characterization of nanopore drawn devices. Seen from the characterization, the nanopore device fabricated can indeed produce a through-hole.

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Characterization of ferrite nanoparticles for preparation of biocomposites

Beilstein Journal of Nanotechnology ◽

10.3762/bjnano.8.127 ◽

2017 ◽

Vol 8 ◽

pp. 1257-1265 ◽

Cited By ~ 7

Author(s):

Urszula Klekotka ◽

Magdalena Rogowska ◽

Dariusz Satuła ◽

Beata Kalska-Szostko

Keyword(s):

Chemical Method ◽

Ferrite Nanoparticles ◽

Chemical Activity ◽

Nominal Composition ◽

X Ray Diffraction ◽

Wet Chemical Method ◽

X Ray ◽

Transmission Electron ◽

Wet Chemical

Ferrite nanoparticles with nominal composition Me0.5Fe2.5O4 (Me = Co, Fe, Ni or Mn) have been successfully prepared by the wet chemical method. The obtained particles have a mean diameter of 11–16 ± 2 nm and were modified to improve their magnetic properties and chemical activity. The surface of the pristine nanoparticles was functionalized afterwards with –COOH and –NH2 groups to obtain a bioactive layer. To achieve our goal, two different modification approaches were realized. In the first one, glutaraldehyde was attached to the nanoparticles as a linker. In the second one, direct bonding of such nanoparticles with a bioparticle was studied. In subsequent steps, the nanoparticles were immobilized with enzymes such as albumin, glucose oxidase, lipase and trypsin as a test bioparticles. The characterization of the nanoparticles was acheived by transmission electron microscopy, X-ray diffraction, energy dispersive X-ray and Mössbauer spectroscopy. The effect of the obtained biocomposites was monitored by Fourier transform infrared spectroscopy. The obtained results show that in some cases the use of glutaraldehyde was crucial (albumin).

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Synthesis and Characterization of Mesoporous NaX Zeolite from Kaolin Loading of Soursop Leaves Extract (Annona muricata Linn.)

ALCHEMY ◽

10.18860/al.v5i3.4621 ◽

2018 ◽

Vol 5 (3) ◽

pp. 100

Author(s):

Ilmin Nasifah ◽

Susi Nurul Khalifah ◽

Elok Kamilah Hayati

Keyword(s):

Hydrothermal Method ◽

Ethanol Extract ◽

Nitrogen Adsorption ◽

Synthesis And Characterization ◽

Annona Muricata ◽

Nax Zeolite ◽

Loading Process ◽

Uniform Particles ◽

Calcined Kaolin

Mesoporous NaX zeolite has been synthesized from calcined kaolin with the addition of 5M NaOH and CTABr surfactant as mesoporous template by hydrothermal method. The result of synthesis was used as anticancer loading agent of ethanol extract soursop leaves. Characteristics of zeolite were studied by XRD, IR spestroscopy, Nitrogen Adsorption and SEManalysis. The mesoporous NaX zeolite has been formed with mixing of A, Y, kaolinite and quartz phases. The surface of zeolite particles has changed from amorphous to regular and uniform particles. The pores of NaX zeolite belongs to mesoporous type with size 6.13 nm. Loading process of soursop leaves extract on zeolite decreased intensity and crystallinity of zeolite peaks. The new absorption in soursop leaves extract loaded on zeolite spectra was detected at 2928.174 cm-1. The surface of zeolite seen to be compact and irregular.

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Analysis of the properties of a Cu-Al2-O3 sintered system based on ultra fine and nanocomposite powders

Science of Sintering ◽

10.2298/sos0702145a ◽

2007 ◽

Vol 39 (2) ◽

pp. 145-152 ◽

Cited By ~ 8

Author(s):

Z. Andjic ◽

M. Korac ◽

Z. Kamberovic ◽

A. Vujovic ◽

M. Tasic

Keyword(s):

Mechanical Properties ◽

Chemical Method ◽

Elevated Temperatures ◽

Hydrogen Atmosphere ◽

Scanning Electronic Microscopy ◽

Electronic Microscopy ◽

Composite Powders ◽

Nanocomposite Powders ◽

Final Composition

In this paper synthesis of a composite based on Cu-Al2O3 by a thermo-chemical method is shown along with a comparative analysis of the properties of the obtained nanocomposite sintered samples, which are characterized by a good combination of electric-mechanical properties, suitable for work at elevated temperatures. Ultra fine and nanocrystal powder Cu-Al2O3 is obtained by a chemical method, starting from water solutions of nitrates up to achieving the requested composition with 3 and 5% of Al2O3. Synthesis of composite powders has been developed through several stages: drying by spraying, oxidation of the obtained powder of precursor and then reduction by hydrogen until the final composition of nanocomposite powder is achieved. After characterization of the obtained powders, which comprised examination by the Scanning Electronic Microscopy (SEM) method and X-ray-structure analysis (RDA), the powders were compacted with compacting pressure of 500 MPa. Sintering of the obtained samples was performed in the hydrogen atmosphere in isothermal conditions at temperatures of 800 and 900oC for 30, 60, 90 and 120 minutes. Characterization of the obtained Cu-Al2O3 of the nanocomposite sintered system comprised examination of microstructure by the Scanning Electronic Microscopy (SEM), as well as examining of electric mechanical properties. The obtained results show a homogenous distribution of dispersoides in the structure, as well as good mechanical and electric properties. .

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