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Online since: August 2017
Authors: Udom Tipparach, Somkuan Photharin
Anatase and rutile both are tetragonal structures, whereas brookite is orthorhombic structure.
Although anatase structure is not as common as rutile in nature, anatase form could be stabilized in nanostructure TiO2 structure.
The X-ray spectra of both pure TiO2 and Ag-loaded TiO2 nanotube arrays show anatase and titanium structures with a dominance of anatase structure.
The structures of Ag-loaded TiO2 nanotube arrays with different concentrations of silver are also similar.
Reller, Photoinduced reactivity of titanium dioxide, Progress in Solid State Chemistry, 32(1-2)(2004) 33–177
Online since: June 2012
Authors: Yu Jiang Wang, Hai Yan Lin, Yong Gang Wang, Wei Jun Zhang, Zhan Ying Zhang
The construction of organized nanoparticle-based structures by self-assembly or templating is an important goal of nanotectonics and it should be possible to develop a chemistry of organized matter based on emergent processes in which time- and scale-dependent coupling of interactive components generate self-assembly architectures with embedded structure [3].
In the present paper, the preparation of PbTiO3 self-assembly structures by the hydrothermal method are reported.
It is speculated that the introducing of K2CO3 as a mineralizer plays an important role in the formation of assembled structure of PbTiO3 crystals.
In the contrast experiment, when KOH was applied as mineralizer, cube-shaped crystals were obtained and the self-assembly structure could not be formed.
It is found that the introducing of K2CO3 plays a key role in the formation of PbTiO3 self-assembly structures.
Online since: January 2007
Authors: Yan Li, Xiao Li Zhang, Young Hwan Kim, Young Soo Kang
The crystalline structure is strongly affected by the thermal treatment of the Co nanoparticles.
The crystal structure of nanoparticles was characterized by X-ray diffraction pattern (XRD).
The annealing with deferent temperatures transforms the particle from poor crystalline structure to high crystalline structure.
The nanocrystallite structure was analyzed by X-ray diffraction (XRD) using a Philips X'Pert-MPD System with a Cu Kα radiation source (λ = 0.154056 nm).
We demonstrate that annealing with deferent temperatures transforms the particle from poor crystalline structure to high crystalline structure.
Online since: February 2012
Authors: Yi Min Wang, Xiao Chao Zhang, Yan Ping Wang, Dong Bo Guo, Jia Wang
Bead-structured titanium dioxide microspheres were successfully prepared by a facile one-step solvothermal method using diblock copolymers poly(ethylene oxide)-block-polystyene (PEO-b-PS) as the structure-directing agent.
In this paper, we introduced a facile acid-solvothermal method with PEO-b-PS as templates to fabricate complicated structure of TiO2 microspheres.
Results and Discussion Structure Characterization of Titania Hybrid Microspheres.
This involves adding TTIP to an isopropanol mixture containing the HCl and 0.3 wt% PEO-b-PS structure-directing agent to instigate the hydrolysis and condensation reactions.
Myers: Analytical Chemistry.
Online since: June 2015
Authors: Darko Makovec, Tatiana Plutenko, Oleg V'yunov, Dmytro Plutenko, Anatolii Belous
It was found that samples of (1-x)BaTiO3–xLi0.5Bi0.5TiO3 (0 ≤ x ≤0.6) solid solutions at room temperature exhibit perovskite structure.
Lin et al., Structure, electrical properties and temperature characteristics of Bi0.5Na0.5TiO3–Bi0.5K0.5TiO3–Bi0.5Li0.5TiO3 lead-free piezoelectric ceramics, Appl.
The aim of this work is synthesis of solid solutions (1-x)BaTiO3–xLi0.5Bi0.5TiO3 and study of the effect of lithium-bismuth titanate on their crystal structure, microstructure and electrical properties.
This fact can be explained by a reduction in the tetragonal distortion and formation of cubic structure.
The crystal structure and the unit cell parameters of (1-x)BaTiO3–xLi0.5Bi0.5TiO3 solid solutions were studied using fullprofile Rietveld analysis.
Online since: October 2016
Authors: Nils Krister Persson
Some characteristics of natural biofact materials and structures include pliability, softness, porosity, light weight, recyclability, and periodicity.
The rationale or this is the ever-present division[1] within ontology, environmental science, chemistry, medicine and material science between what is natural and what is synthetic.
In turn fibers (in the general sense) are elongated material structures where the length >> diameter, such that a) the diameter > nanometers and b) flexibility / bending is of the order of at least% of the length before break.
Textiles are means for getting cheap, area covering, often light weight, structured (for example periodic) surfaces.
All this could also be obtained using a textile – as textiles are thin large area constructs that can be structured with pathways (warp and weft treads).
Online since: November 2013
Authors: Mona Goudarzi, Mohammad Ghorbani
Also, The morphology of the coatings was cracked structures and cracks in the coating with six layers were distributed uniformly.
It was revealed that the morphology of the coatings was cracked structures and cracks with very small dimensions in the range 300-900nm produced in the coatings.
Crouch, Preparation and surface characterization of Ti/SnO2-RuO2-IrO2 thin films as electrode material for the oxidation of phenol, Materials Chemistry and Physics, 92 (2005) 559-564
Online since: April 2012
Authors: Qi Xin Wan, Dong Mei Li, Zhi Hua Xiong
(Color online) Minimum energy structure of stoichiometric (TiO2)n clusters (n=1-4).
In their work, many initial structures were constructed to identify the true global minima.
We only globally optimized the structures based on these reports.
(Color online) Structure of TinO2n-1 clusters (n=1-4).
[8] M.S.Gordon, M.W.Schmidt, in: C.E.Dykstra, G.Frenking, K.S.Kim, G.E.Scuseria (Eds.), Theory and Applications of Computational Chemistry, Elsevier, 2005(Chapter 41)
Online since: July 2014
Authors: Larisa Stsnislavovna Grigoryeva, Pavel Pavlovich Oleinik, Viktor Isaevich Brodsky
Outstripping engineering preparation of construction sites Oleinik Pavel Pavlovich1, Grigorieva Larisa Stanislavovna2 and Brodsky Viktor Isaevich 3 1 Doctor of Technical Sciences, The Department of Technology and building organization of production, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation 2 Doctor of Chemical Sciences, The Department of Composite Materials Technology and Applied Chemistry, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation 3 PhD, The Department of Technology and building organization of production, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation pehel@yandex.ru Keywords: construction site, a combination of milestones, the intensity of work Abstract.
The basic scheme of intensive implementation preparatory work, the general form of the formulas for determining the structure and amount of preparatory work performed prior to the start of construction.
In this context, the main task of choosing effective solutions organization of the preparatory period is to determine:  structure and the amount of work necessary and sufficient for the timely opening of the front work on the construction of buildings and structures ; structure and the amount of work performed in accordance with the basic construction and installation works .
V Areas with transport routes (roads, railways) used in the construction process, and areas of communications, traceable under them VI Land with communications within storage sites, assembly and consolidation of structures and equipment VII Land with communications within the mounting zones construction of buildings and structures VIII Land for advancing the construction of buildings and structures, used for construction needs IX Land with utilities and foundations of buildings and structures combined with earthy grooves X Land with communications is mounting zones construction of buildings It is necessary to consider the following: - Work in groups I - VIII (denoted by the volume of these works ) is - are crucial for the opening of the front main construction and installation of the works and should be fully executed prior to the construction of the object ; - Work on group IX () must be carried out simultaneously with the device of foundations (underground parts) buildings and structures
Kharitonov, Underground buildings and structures on the industrial and civil values.
Online since: July 2018
Authors: MirSalim M. Asadov, Solmaz N. Mustafaeva, Ulviya A. Hasanova, Faiq M. Mamedov, Ozbak M. Aliev, Kazimir I. Yanushkevich, Sergey A. Nikitov, Esmira S. Kuli-Zade
Kuli-Zade1 1Institute of Catalysis and Inorganic Chemistry of the National Academy of Sciences of Azerbaijan.
FeS–In2S3 is characterized by the formation of FeIn2S4, which has a spinel structure.
Ueda, Structure and Physical Properties of 1D Magnetic Chalcogenide, Jamesonite (FePb4Sb6S14), Inorg.
Ueda, Crystal Structure and Physical Properties of Fe1.5Pb5.5In10S22, Inorg.
Kanatzidis, The Role of Solid State Chemistry in the Discovery of New Thermoelectric Materials, in Semiconductors and Semimetals, Ed., M.T.