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Online since: October 2018
Authors: Ni Wayan Pratiwi Triandani, I.M. Arcana
Arcana2,b
1Master Research Student on Department of Teaching Chemistry, Faculty of Mathematical and Science, Institut Teknologi Bandung, Indonesia
2Professor on Departement of Chemistry, Faculty of Mathematical and Science, Institut Teknologi Bandung, Indonesia
apratiwi.triandani@gmail.com
Keywords: Chitosan, Charboxymethyl Chitosan, Solid electrolyte membrane, Lithium battery
Abstract.
Cs can be found from many sources which mostly from the skeleton of fish or shell of crustaceous species that contain chitin as a former structure of chitosan [4], [5].
It had same biocompatibility but had higher ionic conductivity based on CMC's structure [7].
Carboxymethyl groups which bonded in chitosan structure could be indicated from FTIR spectra and amount of (DS) could be defined from 1H NMR spectrum.
Chitosan structure becomes more amorphous due to carboxymethyl groups which restrained each layer in some distance[10].
Cs can be found from many sources which mostly from the skeleton of fish or shell of crustaceous species that contain chitin as a former structure of chitosan [4], [5].
It had same biocompatibility but had higher ionic conductivity based on CMC's structure [7].
Carboxymethyl groups which bonded in chitosan structure could be indicated from FTIR spectra and amount of (DS) could be defined from 1H NMR spectrum.
Chitosan structure becomes more amorphous due to carboxymethyl groups which restrained each layer in some distance[10].
Online since: January 2017
Authors: Wei Feng Liu, Yan Zhang, Chun Yan Wu, Li Jian Zhang, Guo Shun Jiang, Chang Fei Zhu, Xin Jin
These quaternary semiconductors have tetrahedrally coordinated crystal structures (derived from zincblende) and electronic structure (s-p band gap) similar to the binary II-IV semiconductors ZnS.
The crystal structure characterization was conducted using X-ray diffractometer (XRD, D/Max-rA) with Cu-Kα radiation (l=1.5406 Å).
In this case, the volatiles decomposed from organic stuff will be removed from the films in the subsequent sulfurizing step, forming a non-compact structure.
Wei, Chemistry of Materials, 26 (2014) 3411-3417
Kim, The Journal of Physical Chemistry C, 119 (2015) 1706-1713.
The crystal structure characterization was conducted using X-ray diffractometer (XRD, D/Max-rA) with Cu-Kα radiation (l=1.5406 Å).
In this case, the volatiles decomposed from organic stuff will be removed from the films in the subsequent sulfurizing step, forming a non-compact structure.
Wei, Chemistry of Materials, 26 (2014) 3411-3417
Kim, The Journal of Physical Chemistry C, 119 (2015) 1706-1713.
Online since: February 2014
Authors: Ping Duan, Zhong He Shui, Guo Wei Chen
Introduction
Chloride induced corrosion was recognized as one of the major cause of degradation of reinforced concrete structures [1-2].
After it was recognized that chloride may induce steel corrosion in reinforced concrete structures, a considerable amount of papers has been published presenting chloride penetration and binding in reinforced concrete [6-8].
This study aims to catch chloride ion in cement paste and concrete and to fix them in intercalation layers, in order to improve chloride ion diffusion resistance by means of the properties of anion-exchange and structure re-construction of the intercalated layered materials.
LDHs fulfills structure reconstruction after mixing with NaCl solution.
Ohare, Intercalation chemistry of layered double hydroxides: recent developments and applications, J.
After it was recognized that chloride may induce steel corrosion in reinforced concrete structures, a considerable amount of papers has been published presenting chloride penetration and binding in reinforced concrete [6-8].
This study aims to catch chloride ion in cement paste and concrete and to fix them in intercalation layers, in order to improve chloride ion diffusion resistance by means of the properties of anion-exchange and structure re-construction of the intercalated layered materials.
LDHs fulfills structure reconstruction after mixing with NaCl solution.
Ohare, Intercalation chemistry of layered double hydroxides: recent developments and applications, J.
Online since: August 2022
Authors: Tanvi Nayak, Chandra Kumar Dixit, Erich Potrich, Larissa Souza Amaral, K. Kulathuraan, K. Pakiyaraj, Dipak S Patil
They are also employed in analytical chemistry and additives [1].
The chemical precipitation process was used to construct Cu2O/TiO2 nano hetero structures: 0.007 mol Cu(CH3COO)2H2O was dissolve in 100 ml of pure ethanol.
SEM analysis TiO2-Cu2O Figure 2 depicts the XRD patterns of the constructed TiO2-Cu2O hetero-structure.
The typical peak of cubic Cu2O cannot be visible in TiO2-Cu2O hetero-structure.
This is accompany by a comparable reduce in the intensity of the UV peak at 235 and 347 nm, which are attributed to the naphthalene and benzoic and structure, correspondingly.
The chemical precipitation process was used to construct Cu2O/TiO2 nano hetero structures: 0.007 mol Cu(CH3COO)2H2O was dissolve in 100 ml of pure ethanol.
SEM analysis TiO2-Cu2O Figure 2 depicts the XRD patterns of the constructed TiO2-Cu2O hetero-structure.
The typical peak of cubic Cu2O cannot be visible in TiO2-Cu2O hetero-structure.
This is accompany by a comparable reduce in the intensity of the UV peak at 235 and 347 nm, which are attributed to the naphthalene and benzoic and structure, correspondingly.
Online since: December 2011
Authors: Yu Fang Shen, Fei Long, Yi Wu, Zheng Guang Zou, Zhi Gang Xiao, Kai Liu
China
2School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, P.R.
(a) (b) Fig. 1 TiCx-Fe interfaces with carbon vacancy on the red box position Results and Discussion Structure.
Before we do the calculations of the interfaces, we must fix the structure features of bulk Fe, TiC and the Fe, TiC surfaces.
The main structure features of the relaxed TiCx-Fe interfaces (Fig.1) are listed in Table 1, which gives coordination numbers and nearest-neighbor distances for atoms at or near the relaxed interface.
Dressler, Advanced Series in Physical Chemistry, Vol. 11, series edited by C.
(a) (b) Fig. 1 TiCx-Fe interfaces with carbon vacancy on the red box position Results and Discussion Structure.
Before we do the calculations of the interfaces, we must fix the structure features of bulk Fe, TiC and the Fe, TiC surfaces.
The main structure features of the relaxed TiCx-Fe interfaces (Fig.1) are listed in Table 1, which gives coordination numbers and nearest-neighbor distances for atoms at or near the relaxed interface.
Dressler, Advanced Series in Physical Chemistry, Vol. 11, series edited by C.
Online since: August 2011
Authors: Zhi Xiang Ji
Introduction
During the past two decades, coordination polymer materials have emerged as an exciting area of supramolecular chemistry because of the potentially interesting properties [1].
The structure was solved by direct methods and refined by full-matrix least-squares techniques on F2.
The structure was solved by direct methods [5] using SHELXL-97 and expanded using Fourier techniques.
The molecule structure of Ni (II) coordination polymer material is shown in Fig.1.
Fig. 2 shows the one-dimensional chain structure by the interaction of pyridine.
The structure was solved by direct methods and refined by full-matrix least-squares techniques on F2.
The structure was solved by direct methods [5] using SHELXL-97 and expanded using Fourier techniques.
The molecule structure of Ni (II) coordination polymer material is shown in Fig.1.
Fig. 2 shows the one-dimensional chain structure by the interaction of pyridine.
Online since: April 2018
Authors: Dewi Suriyani Che Halin, Norsuria Mahmed, Mohd Arif Anuar Mohd Salleh, Kamrosni Abdul Razak, A.N. Mohd Sakeri
When the solution of sol was added with Ag content, it shows the porous structure with flaky-crack films.
With the increasing of the Ag content from 0.5g to 1.0g, the structure is more porous and it is good for the photocatalytic activity.
The crystalline structure was characterized by an X-ray diffractometer (XRD) in 2θ range from 20° to 80°.
Kaneko: Journal of Physical Chemistry B Vol. 103 (1999), p. 1119 [26] V.
Kamat: Journal of Physical Chemistry B Vol. 105 (2001), p. 11439 [27] X.
With the increasing of the Ag content from 0.5g to 1.0g, the structure is more porous and it is good for the photocatalytic activity.
The crystalline structure was characterized by an X-ray diffractometer (XRD) in 2θ range from 20° to 80°.
Kaneko: Journal of Physical Chemistry B Vol. 103 (1999), p. 1119 [26] V.
Kamat: Journal of Physical Chemistry B Vol. 105 (2001), p. 11439 [27] X.
Online since: February 2011
Authors: Peter Häussler, Martin Stiehler
Global resonances of the type considered have clearly to be distinguished from local resonances between individual ions (described by quantum chemistry) forming local order.
The momentum transfer to the static structure is normalized by 2kF.
Discussion Structure formation occurs when there is a release of energy and entropy from the structure-forming system.
Structure formation from a cloud of atoms.
In addition, structure formation needs the forming of particular distances and angles.
The momentum transfer to the static structure is normalized by 2kF.
Discussion Structure formation occurs when there is a release of energy and entropy from the structure-forming system.
Structure formation from a cloud of atoms.
In addition, structure formation needs the forming of particular distances and angles.
Online since: May 2020
Authors: I.V. Zaychenko, S.A. Gordin, V.V. Bazheryanu
Similar to parts of a monolithic structure, for parts of a three-layer structure, the molding mode in terms of holding at a temperature of (180 + 5) °C was reduced from 5 to 3 hours.
Kulik, Crack resistance of cured polymer compositions, Moscow: Chemistry, 1991
Baker, Composite Materials for Aircraft Structures.
Composite Materials for Aircraft Structures, AIAA, Virginia, 2004
Trostyanskiy, Plastics for structural purposes (thermosets), Moscow: Chemistry, 1974
Kulik, Crack resistance of cured polymer compositions, Moscow: Chemistry, 1991
Baker, Composite Materials for Aircraft Structures.
Composite Materials for Aircraft Structures, AIAA, Virginia, 2004
Trostyanskiy, Plastics for structural purposes (thermosets), Moscow: Chemistry, 1974
Online since: May 2011
Authors: Li Hua Gan, Ming Xian Liu, Jun Hu, Hong Lai Liu, Long Wu Chen
Carbon Microspheres Prepared by High Internal Phase Emulsion Polymerization
Mingxian Liu1, Lihua Gan2, Jun Hu1, Honglai Liu1 and Longwu Chen2
1State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P.
China; 2Department of Chemistry, Tongji University, Shanghai 200092, P.
Wu et al. prepared polymer microspheres with nonporous skin and open cellular structure by supercritical CO2 foaming via a pressure quench method [3].
For instance, Bismarck et al. prepared polymer foams with an open porous structure by using HIPE as a template [9].
The polymerization of R/F in the HIPE become rapid as a result of abundant catalyst, leading to partly structure destroy of the HIPE.
China; 2Department of Chemistry, Tongji University, Shanghai 200092, P.
Wu et al. prepared polymer microspheres with nonporous skin and open cellular structure by supercritical CO2 foaming via a pressure quench method [3].
For instance, Bismarck et al. prepared polymer foams with an open porous structure by using HIPE as a template [9].
The polymerization of R/F in the HIPE become rapid as a result of abundant catalyst, leading to partly structure destroy of the HIPE.