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Online since: April 2014
Authors: Zhi Gang Chen, Feng Chen, Cheng Bao Liu, Jun Chao Qian, Zheng Ying Wu
Preparation of Bionic Structure TiO2 Using Napkin as Template and Its Photocatalytic Performance
Feng Chen1, 2, a, Chengbao Liu1, 2, b, Junchao Qian1, 3, c,
Zhengying Wu1, 2, d and Zhigang Chen1, 2, 3, e*
1School of Chemistry, Biochemistry and materials engineering, Suzhou Univerisity of Science and Technology, Suzhou 215009, China
2Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou, 215009, China
3Jiangsu Key Laboratory for Photon Manufacturing, Jiangsu University, Zhenjiang 212013, China
aujschenfeng@163.com, blcb@mail.usts.edu.cn, cziyou1900@163.com, dzywu@mail.usts.edu.cn, eczg@ujs.edu.cn
Keywords: Titanium oxide, Biotemplate, Porous fiber, Photocatalytic.
The crystallinity, morphology, and structure of product are illuminated.
The randomly arranged fibrous structure of the samples is 1-10μm in diameter, with lengths ranging from 100 to 1000μm.
TEM image gives evidence of the structure and indicates that the product is composed of numerous small nanocrystals with diameter of about 5 to 8nm.
The simple templated method of similar bio-morphic structure composed of other oxide materials could be used in visible light photocatalytic reaction.
The crystallinity, morphology, and structure of product are illuminated.
The randomly arranged fibrous structure of the samples is 1-10μm in diameter, with lengths ranging from 100 to 1000μm.
TEM image gives evidence of the structure and indicates that the product is composed of numerous small nanocrystals with diameter of about 5 to 8nm.
The simple templated method of similar bio-morphic structure composed of other oxide materials could be used in visible light photocatalytic reaction.
Online since: March 2012
Authors: Jiang Lei Hu, Feng Juan Liu, Guo Jun Qiang, Yuan Rui Wang
Study on preparation of Mg(OH)2 as new flame-resisting materials from dolomite through the carbonization
Yuanrui Wang 1,2a,Fengjuan Liu 1,b,Guojun Qiang 1,c,Jianglei Hu1,d
1 College of Chemical Engineering, Changchun University Of Technology , Changchun, 130012, PR China
2 College of Chemistry, Jilin University, Changchun,130023, PR China
awyr@mail.ccut.edu.cn,bliufengjuan289@163.com,cqiangjayjun@163.com, dhujl863@163.com
Keywords: dolomite; magnesium hydroxide; carbonization; reactive condition
Abstract:The optimal conditions of prepared magnesium hydroxide using dolomite as raw material were systematically explored by carbonization.
The structure and composition of product were analyzed by Fourier transform infrared spectrometer, X ray diffraction and electron microscopy.
The structure and composition of product were analyzed and characterized by means of Fourier transform infrared spectrometer, X ray diffraction and electron microscopy.
Furthermore the structure of pure magnesium hydroxide is a hexagon.
The structure and composition of product were analyzed by Fourier transform infrared spectrometer, X ray diffraction and electron microscopy.
The structure and composition of product were analyzed and characterized by means of Fourier transform infrared spectrometer, X ray diffraction and electron microscopy.
Furthermore the structure of pure magnesium hydroxide is a hexagon.
Online since: November 2015
Authors: Siti Noraini Sulaiman, Musa Mohamed Zahidi, Alhan Farhanah Abd Rahim, I.H. Hamzah, N.M. Sah
Different pore diameter sizes of the PS structures were constructed.
PS is also a suitable dielectric material for multilayer [4] due to the characteristic of its large surface area within a small volume, controllable pore sizes, convenient surface chemistry, and the ability to modulate refractive index as a function of depth [5].
The process started with the input file written for the three structures, followed by simulating the structures and analyzing the results of the simulation.
Figure 3 shows the final structure after the electrodes were defined.
There are four structures shown with figure 4(a) showing the structure of bulk Si doped with 1×1014 cm-3 Phosphorous.
PS is also a suitable dielectric material for multilayer [4] due to the characteristic of its large surface area within a small volume, controllable pore sizes, convenient surface chemistry, and the ability to modulate refractive index as a function of depth [5].
The process started with the input file written for the three structures, followed by simulating the structures and analyzing the results of the simulation.
Figure 3 shows the final structure after the electrodes were defined.
There are four structures shown with figure 4(a) showing the structure of bulk Si doped with 1×1014 cm-3 Phosphorous.
Online since: January 2018
Authors: Nick de Cristofaro, Sada Sahu, Jason Bryant, Vincent Meyer
With the implementation of energy-efficient production technologies, the use of alternative fuels, the development of new, low-lime cement chemistries, and the reduction of clinker factor in cement through addition of supplementary cementitious materials, the cement industry has tried to attain the IEA objective.
The outer product forms early in the curing process, is highly porous, and precipitates in the open spaces within the concrete structure.
The unique ability of CSC to avoid hydration and cure via a reaction with gaseous CO2 opens the possibility for the permanent sequestration of CO2 in cured concrete structure.
References [1] Barcelo, L. et al: Cement and Carbon Emission, Materials and Structures 47 (2013) 6, pp. 1055-1065, 1871-6873 [2] Riman R.E. & Atakan V.: Systems and methods for carbon capture and sequestration and compositions derived therefrom.
[4] Madlool, N.A. et al : A critical review on energy use and savings in the cement industries, Renewable and Sustainable Energy Reviews 15 (2011) 4, pp. 2042-2060, ISSN 1364-0321 [5] Taylor H.F.W.: Cement Chemistry, 2nd Edition, Thomas Telford, ISBN 978-0727725929, (1997) [6] Environmental Protection Agency, Washington, DC : AP42 - Compilation of air pollutant emission factors, Vol. 1; Stationary point and area sources (2005).
The outer product forms early in the curing process, is highly porous, and precipitates in the open spaces within the concrete structure.
The unique ability of CSC to avoid hydration and cure via a reaction with gaseous CO2 opens the possibility for the permanent sequestration of CO2 in cured concrete structure.
References [1] Barcelo, L. et al: Cement and Carbon Emission, Materials and Structures 47 (2013) 6, pp. 1055-1065, 1871-6873 [2] Riman R.E. & Atakan V.: Systems and methods for carbon capture and sequestration and compositions derived therefrom.
[4] Madlool, N.A. et al : A critical review on energy use and savings in the cement industries, Renewable and Sustainable Energy Reviews 15 (2011) 4, pp. 2042-2060, ISSN 1364-0321 [5] Taylor H.F.W.: Cement Chemistry, 2nd Edition, Thomas Telford, ISBN 978-0727725929, (1997) [6] Environmental Protection Agency, Washington, DC : AP42 - Compilation of air pollutant emission factors, Vol. 1; Stationary point and area sources (2005).
Online since: May 2020
Authors: V.V. Bazheryanu, E.P. Zharikova, I.V. Zaychenko
Testing Equipment and Technology for Local Repair
Special portable equipment is needed for local repair of large-sized parts from PCM and glued metal structures as part of the product.
Layout schemes are selected typical for monolithic and cellular structures based on KMKC and KMKY adhesive prepregs manufactured at the enterprise [12,13].
Vorobey, Technology of rocket and aerospace structures from composite materials, Moscow: MSTU, 1998
Kulik, Crack resistance of cured polymer compositions, Moscow: Chemistry, 1991
Trostyanskiy, Plastics for structural purposes (thermosets), Moscow: Chemistry, 1974
Layout schemes are selected typical for monolithic and cellular structures based on KMKC and KMKY adhesive prepregs manufactured at the enterprise [12,13].
Vorobey, Technology of rocket and aerospace structures from composite materials, Moscow: MSTU, 1998
Kulik, Crack resistance of cured polymer compositions, Moscow: Chemistry, 1991
Trostyanskiy, Plastics for structural purposes (thermosets), Moscow: Chemistry, 1974
Online since: March 2022
Authors: Siti Maizatul Ameera Azhar, Nurlin Abu Samah, Gaanty Pragas Maniam
The 3D molecular structure of the components of MIP was designed as shown in figure 2 below while figure 3 shows the oleic acid-allylthiourea complex in 3D structure.
The components of MIP in 3D structures.
The predicted complex in 3D structure.
The Chemistry of Sulphonic Acids, Esters and Their Derivatives, 323–350. https://doi.org/10.1002/0470034394.ch9
Food Chemistry, 102(4), 1407–1414. https://doi.org/10.1016/j.foodchem.2006.05.051
The components of MIP in 3D structures.
The predicted complex in 3D structure.
The Chemistry of Sulphonic Acids, Esters and Their Derivatives, 323–350. https://doi.org/10.1002/0470034394.ch9
Food Chemistry, 102(4), 1407–1414. https://doi.org/10.1016/j.foodchem.2006.05.051
Online since: May 2012
Authors: Jun Guan, De Min He, Fan Hu Zeng, Qiu Min Zhang
The FTIR is used widely on the research of coal structure.
Rubiera [15] found that compared with WLG-RAW coal the structure of WLG-WASHED coal has changed.
Beijing coal chemistry institute
[13] H.D.Franklin,W.A.Peters,J.B.Howard,Eeffet of mineral matter on the rapid Pyrolysis and Hydropyrolysis of a bituminous coal,Preprints-Division of Petroleum Chemistry,American Chemical Soeiety,1981,26(4):1079
Coal structure and reactivity changes induced by chemical demineralization.
Rubiera [15] found that compared with WLG-RAW coal the structure of WLG-WASHED coal has changed.
Beijing coal chemistry institute
[13] H.D.Franklin,W.A.Peters,J.B.Howard,Eeffet of mineral matter on the rapid Pyrolysis and Hydropyrolysis of a bituminous coal,Preprints-Division of Petroleum Chemistry,American Chemical Soeiety,1981,26(4):1079
Coal structure and reactivity changes induced by chemical demineralization.
Online since: April 2016
Authors: Bing Hua Yao, Qin Ku Zhang
Fig. 3 UV-vis diffuse reflectance spectrum and band gap (Eg) of Ba3In2(OH)12
It is well known that the UV-vis absorption edge is relevant to the energy band of semiconductor catalyst, depending on their electronic structure feature.
After approximately 3 h of irradiation, the absorption peaks located at 554 nm and 250 270 nm disappeared and the pink color of RhB solution faded, suggesting that the chromophore and benzene ring structure of RhB were completely broken down[11].
Reaction temperature, reaction time, NaOH concentration and Ba/In molar ratio influenced the crystalline structure of catalyst.
The chromophore and benzene ring structure of RhB were completely broken down by the catalyst of Ba3In2(OH)12.
[10] П.И.ΦΕДΟΡΟВ and Ρ.Χ.АКЧУΡИН: Indium Chemistry Handbook (Beijing: Peking university press, 2005), p.29
After approximately 3 h of irradiation, the absorption peaks located at 554 nm and 250 270 nm disappeared and the pink color of RhB solution faded, suggesting that the chromophore and benzene ring structure of RhB were completely broken down[11].
Reaction temperature, reaction time, NaOH concentration and Ba/In molar ratio influenced the crystalline structure of catalyst.
The chromophore and benzene ring structure of RhB were completely broken down by the catalyst of Ba3In2(OH)12.
[10] П.И.ΦΕДΟΡΟВ and Ρ.Χ.АКЧУΡИН: Indium Chemistry Handbook (Beijing: Peking university press, 2005), p.29
Online since: November 2013
Authors: Zobedeh Momeni Larimi, Ahmad Amirabadizadeh
In the first step, a foamy structure was produced by combustion synthesis using yttrium nitrate and glycine.
In the first step, a foamy structure was produced by combustion synthesis using yttrium nitrate and glycine.
A. oamy Structure Synthesis Yttrium nitrate (Y(NO3)3, 3.5 N solution) and glycine (C2H5O2N) were used as the oxidizer, the fuel, respectively.
Fig.2: X-ray diffractograms of the powder: (a) after combustion synthesis and sulfate addition (b) after calcination Table1: The XRD Parameters and crystalline size in different grystallography orientations D “Scherrer,s formula”nm d(obs) Ǻ FWHM Intensity (cps) 2θ Deg hkl Before Calcination 7 3.0703 1.174 1231 29.078 222 8 1.87477 1.117 503 48.381 440 7 1.60195 1.228 350 57.449 622 After Calcination 25 4.32401 0.321 958 20.525 211 25 3.05872 0.325 7533 29.17 222 25 2.64923 0.327 1787 33.807 400 24 1.87371 0.358 2704 48.548 440 24 1.59815 0.377 1691 57.631 622 The presence of impurity in lattice structure changes lattice energy and causes the excess strain.
Satpute, “Synthesis of thermal spray grade yttrium oxide powder and its application for plasma spray deposition,” Materials Chemistry and Physics, 106,(2007) 416-421
In the first step, a foamy structure was produced by combustion synthesis using yttrium nitrate and glycine.
A. oamy Structure Synthesis Yttrium nitrate (Y(NO3)3, 3.5 N solution) and glycine (C2H5O2N) were used as the oxidizer, the fuel, respectively.
Fig.2: X-ray diffractograms of the powder: (a) after combustion synthesis and sulfate addition (b) after calcination Table1: The XRD Parameters and crystalline size in different grystallography orientations D “Scherrer,s formula”nm d(obs) Ǻ FWHM Intensity (cps) 2θ Deg hkl Before Calcination 7 3.0703 1.174 1231 29.078 222 8 1.87477 1.117 503 48.381 440 7 1.60195 1.228 350 57.449 622 After Calcination 25 4.32401 0.321 958 20.525 211 25 3.05872 0.325 7533 29.17 222 25 2.64923 0.327 1787 33.807 400 24 1.87371 0.358 2704 48.548 440 24 1.59815 0.377 1691 57.631 622 The presence of impurity in lattice structure changes lattice energy and causes the excess strain.
Satpute, “Synthesis of thermal spray grade yttrium oxide powder and its application for plasma spray deposition,” Materials Chemistry and Physics, 106,(2007) 416-421
Online since: December 2013
Authors: Zobedeh Momeni Larimi, A. Amirabadizadeh
In the first step, a foamy structure was produced by combustion synthesis using yttrium nitrate and glycine.
In the first step, a foamy structure was produced by combustion synthesis using yttrium nitrate and glycine.
A. oamy Structure Synthesis Yttrium nitrate (Y(NO3)3, 3.5 N solution) and glycine (C2H5O2N) were used as the oxidizer, the fuel, respectively.
Fig.2: X-ray diffractograms of the powder: (a) after combustion synthesis and sulfate addition (b) after calcination The presence of impurity in lattice structure changes lattice energy and causes the excess strain.
Satpute, “Synthesis of thermal spray grade yttrium oxide powder and its application for plasma spray deposition,” Materials Chemistry and Physics, 106,(2007) 416-421
In the first step, a foamy structure was produced by combustion synthesis using yttrium nitrate and glycine.
A. oamy Structure Synthesis Yttrium nitrate (Y(NO3)3, 3.5 N solution) and glycine (C2H5O2N) were used as the oxidizer, the fuel, respectively.
Fig.2: X-ray diffractograms of the powder: (a) after combustion synthesis and sulfate addition (b) after calcination The presence of impurity in lattice structure changes lattice energy and causes the excess strain.
Satpute, “Synthesis of thermal spray grade yttrium oxide powder and its application for plasma spray deposition,” Materials Chemistry and Physics, 106,(2007) 416-421