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Online since: June 2012
Authors: Ke Gao Liu, Zhong Quan Ma, Nian Jing Ji
Crystal structure of CZTS compounds
One reported problem is about the structure of CZTS, some reported that its structure is kesterite (Cu2ZnSnS4) [18-20], while others insisted it is stannite (Cu2FeSnS4) [3,5,12].
The structure of kesterite and stannite are closely related.
So the research of its structure never stops.
The kesterite structure CZTS films is shown in Fig.1a.
Scragg, Preparation and photoelectrochemical characterization of Cu2ZnSnS4, Electro-chemistry Communications 10 (2008) 639–642
The structure of kesterite and stannite are closely related.
So the research of its structure never stops.
The kesterite structure CZTS films is shown in Fig.1a.
Scragg, Preparation and photoelectrochemical characterization of Cu2ZnSnS4, Electro-chemistry Communications 10 (2008) 639–642
Online since: December 2012
Authors: Yong Jie Chen, Xiu Juan Geng, Ying Xie, Lin Jiu Xiao, Wen Ze Li
PEGs have no influence on the structure of Gd0.6BaB9O16: Eu3+0.4, but the particle size is changed with different molecular weight of PEGs.
Sol-gel is one of soft chemistry synthesis methods [1-4], and good uniformity of component and lower reaction temperature are its advantages [2-4], however, particle agglomerate phenomenon always takes place by using this method.
All the crystalline structures of samples were characterized on a Bruker D8 with Cu Kα at 40 kV and 40mA.
Adding PEG and doping Eu3+ were not change the crystal structure of BaGdB9O16.
The structure of the phosphor was not influenced by PEG, but the emission intensity changed with adding PEG.
Sol-gel is one of soft chemistry synthesis methods [1-4], and good uniformity of component and lower reaction temperature are its advantages [2-4], however, particle agglomerate phenomenon always takes place by using this method.
All the crystalline structures of samples were characterized on a Bruker D8 with Cu Kα at 40 kV and 40mA.
Adding PEG and doping Eu3+ were not change the crystal structure of BaGdB9O16.
The structure of the phosphor was not influenced by PEG, but the emission intensity changed with adding PEG.
Online since: May 2004
Authors: Masato Kakihana, J. Frantti, Monica Popa
Structure of Gel-Derived and Quenched Glasses in the Al2O3-ZrO2SiO2
System
M.
Kakihana Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta 4259 Midori-ku, Yokohama 226-8503, Japan Keywords: Al2O3-ZrO2-SiO2 ternary system, sol-gel method, UV Raman spectroscopy Abstract.
The sol-gel process offers the possibility of making ultrahomogeneous structures at the molecular level and it has been widely used in the synthesis of glasses and ceramics.
Scherer: Sol-Gel Science: The physics and chemistry of Sol-gel processing, (Academic Press, San Diego, CA, 1990) [2] M.
Cooper, Better Ceramics Through Chemistry, (ed.
Kakihana Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta 4259 Midori-ku, Yokohama 226-8503, Japan Keywords: Al2O3-ZrO2-SiO2 ternary system, sol-gel method, UV Raman spectroscopy Abstract.
The sol-gel process offers the possibility of making ultrahomogeneous structures at the molecular level and it has been widely used in the synthesis of glasses and ceramics.
Scherer: Sol-Gel Science: The physics and chemistry of Sol-gel processing, (Academic Press, San Diego, CA, 1990) [2] M.
Cooper, Better Ceramics Through Chemistry, (ed.
Online since: January 2010
Authors: Hong Chi Zhao, Juan Li Guo, Ling Ling Gao, Ai Juan Sun
Synthesis and properties of linear chloroacetylated polystyrene
Hong-chi Zhaoa, Juan-li Guo, Ai-juan Sun and Ling-ling Gao
Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education; College of
Chemistry and Environmental Science, Hebei University, Baoding 071002, Hebei, P.
The structure of chloroacetyl group is similar to that of chloromethyl group.
Chloroacetylated polystyrene (PS) has the same conjugate structure with chloromethylated PS.
Sundberg: Advanced Organic Chemistry: Part A: Structure and Mechanisms (Springer, New York 2007) [9] T.
The structure of chloroacetyl group is similar to that of chloromethyl group.
Chloroacetylated polystyrene (PS) has the same conjugate structure with chloromethylated PS.
Sundberg: Advanced Organic Chemistry: Part A: Structure and Mechanisms (Springer, New York 2007) [9] T.
Online since: December 2012
Authors: Sujira Promnimit, U. Lamdu, Joydeep Dutta, Sunandan Baruah
With a hexagonal wurtzite structure, the ZnO crystal exhibits fractional polar characteristics with lattice parameters a = 0.3296 nm and c = 0.52065 nm.
The ZnO nanoparticles do not preferentially orient in a particular direction and as such the rods are found to grow in all possible directions following the c-axis of the wurtzite structure.
Siegbahn, Nanostructured ZnO electrodes for dye-sensitized solar cell applications, Journal of Photochemistry and Photobiology A: Chemistry. 148(1-3) (2002) 57-64
Dutta, Nanotechnology applications in pollution sensing and degradation in agriculture: a review, Environmental Chemistry Letters. (2009) 1-14
Garadkar, Photocatalytic degradation of methyl orange using ZnO nanorods, Toxicological and Environmental Chemistry. 93(4) (2011) 623-634
The ZnO nanoparticles do not preferentially orient in a particular direction and as such the rods are found to grow in all possible directions following the c-axis of the wurtzite structure.
Siegbahn, Nanostructured ZnO electrodes for dye-sensitized solar cell applications, Journal of Photochemistry and Photobiology A: Chemistry. 148(1-3) (2002) 57-64
Dutta, Nanotechnology applications in pollution sensing and degradation in agriculture: a review, Environmental Chemistry Letters. (2009) 1-14
Garadkar, Photocatalytic degradation of methyl orange using ZnO nanorods, Toxicological and Environmental Chemistry. 93(4) (2011) 623-634
Online since: December 2015
Authors: Muhammad Usman, Muhammad Asghar Jamal, Majid Khan, Ammar Bin Yousaf, Muhammad Kaleem Khosa
When polydispersity is initiated, the fluid is stabilized because more efficient packing is achieved by distributing the different sized particles among the different sized spaces in the random structure.
The synthesized magnetite nanoparticles were characterized by powder X-ray diffraction (PXRD) and transmission electron microscopy (TEM) in order to verify the crystallographic structure and size of particles.
The theory of electrostriction originates from the Deby-Huckl theory of ion-solvent interactions and is a frequently encountered concept in solution chemistry and as well as in nanofluid chemistry.
Electrostricted water molecules around the hydrophilic group of base fluid (citric acid) return to their normal structure causing an increase in volume of nanofluid.
Grassian,“When Size Really Matters: Size-Dependent Properties and Surface Chemistry of Metal and Metal Oxide Nanoparticles in Gas and Liquid Phase Environments, Journal of Physical Chemistry C 112(2008), 18303-18313
The synthesized magnetite nanoparticles were characterized by powder X-ray diffraction (PXRD) and transmission electron microscopy (TEM) in order to verify the crystallographic structure and size of particles.
The theory of electrostriction originates from the Deby-Huckl theory of ion-solvent interactions and is a frequently encountered concept in solution chemistry and as well as in nanofluid chemistry.
Electrostricted water molecules around the hydrophilic group of base fluid (citric acid) return to their normal structure causing an increase in volume of nanofluid.
Grassian,“When Size Really Matters: Size-Dependent Properties and Surface Chemistry of Metal and Metal Oxide Nanoparticles in Gas and Liquid Phase Environments, Journal of Physical Chemistry C 112(2008), 18303-18313
Online since: December 2013
Authors: Ming Yi Deng, Jun Lin Su, Liang Chun Pu, Gang Xie
Oil-based drilling fluids itself have plugged effect for tiny cracks of hydrophilic shale, oil-based drilling fluids plug hydrophilic formation by physical chemistry.
With the arrival of the complex new shale test technology [20], which could successful customize shale drilling fluids is on the basis of dissecting and properly applying drilling fluids chemistries.
Water-based drilling fluids were customized with a reasonable, bottom-up approach that exact match with reservoir fluids chemistry.
Partially hydrolyzed polyacrylamide (PHPA) mud systems for Gulf of Mexico deepwater prospects[C]//SPE International Symposium on Oilfield Chemistry. 1993
[20] Mody,F.K. and Hale,A.H.: “A Borehole Stability Model To Couple the Mechanics and Chemistry of Drilling Fluid Shale Interaction,” JPT (Nov. 1993) 1093
With the arrival of the complex new shale test technology [20], which could successful customize shale drilling fluids is on the basis of dissecting and properly applying drilling fluids chemistries.
Water-based drilling fluids were customized with a reasonable, bottom-up approach that exact match with reservoir fluids chemistry.
Partially hydrolyzed polyacrylamide (PHPA) mud systems for Gulf of Mexico deepwater prospects[C]//SPE International Symposium on Oilfield Chemistry. 1993
[20] Mody,F.K. and Hale,A.H.: “A Borehole Stability Model To Couple the Mechanics and Chemistry of Drilling Fluid Shale Interaction,” JPT (Nov. 1993) 1093
Online since: July 2011
Authors: Ning Gan, Fu Tao Hu, Yuan Zao Wu, Yu Ting Cao
From the SEM figures, HRP - CEA Ab2 probe has the linear structure of one-dimensional "bead chain".
Analytical Chemistry,2010,82,2989 [10] Ruchika MalhotraVyomesh PatelJose Pedro VaquéJ.
Analytical Chemistry,2010,82,3118 [11] Rongjing Cui and Jun-Jie Zhu.
Analytical Chemistry,2002,74,3579 [21] Juan TangBiling SuDianping Tang and Guonan Chen.
Analytical Chemistry,2010,82,2989
Analytical Chemistry,2010,82,2989 [10] Ruchika MalhotraVyomesh PatelJose Pedro VaquéJ.
Analytical Chemistry,2010,82,3118 [11] Rongjing Cui and Jun-Jie Zhu.
Analytical Chemistry,2002,74,3579 [21] Juan TangBiling SuDianping Tang and Guonan Chen.
Analytical Chemistry,2010,82,2989
Online since: May 2020
Authors: I.E. Kuzmina, A.I. Fedorova
Introduction
Corrosion leads to large losses as a result of the destruction of pipelines, tanks, metal parts of machines, ship hulls, marine structures, etc.
Korovin General chemistry: Uch.
Pizzi, Tannins as a sustainable raw material for green chemistry: A review, Industrial Crops and Products. 126 (2018) 316-332
Polees, Analytical Chemistry [Text], 2nd ed., Pererab. and add, Moscow: Medicine, 1994, 303 p
Tsitovich, The course of analytical chemistry, SPb.: Lan, 2004, 196 p.
Korovin General chemistry: Uch.
Pizzi, Tannins as a sustainable raw material for green chemistry: A review, Industrial Crops and Products. 126 (2018) 316-332
Polees, Analytical Chemistry [Text], 2nd ed., Pererab. and add, Moscow: Medicine, 1994, 303 p
Tsitovich, The course of analytical chemistry, SPb.: Lan, 2004, 196 p.