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Online since: August 2015
Authors: Hussin Kamarudin, Mohd Mustafa Al Bakri Abdullah, Nur Ain Jaya, Romisuhani Ahmad, Andrei Victor Sandu, Mohammed Binhussain, Mohd Izzat Ahmad
Introduction
Geopolymers are synthesizes by the polycondensation of silica-aluminate structure.
Meanwhile, sample heated at 900 °C has the lowest densification causing it to have more porous structure.
Davidovits in: Geopolymer Chemistry and Application, 2nd Edition.
Meanwhile, sample heated at 900 °C has the lowest densification causing it to have more porous structure.
Davidovits in: Geopolymer Chemistry and Application, 2nd Edition.
Online since: March 2012
Authors: Xiao Yan Liu, Li Yun Zheng, Fei Gao, Mei Xia Li, Rui Jiao Jiang
Instruction
TiO2 is the most potential photocatalyst because of its stable chemistry properties, non - toxic and low cost [1,2,3].
The structure properties were tested by a SIEMENS D-500 X-ray diffractometer with a CuK wavelength of 0.154 18 nm.
It indicates that only one (101) orientation peak around 27° belonging to anatase phase was observed in all the samples, which implies that Ni-doping can not change the structure of TiO2.
The structure properties were tested by a SIEMENS D-500 X-ray diffractometer with a CuK wavelength of 0.154 18 nm.
It indicates that only one (101) orientation peak around 27° belonging to anatase phase was observed in all the samples, which implies that Ni-doping can not change the structure of TiO2.
Online since: October 2011
Authors: Mohd Ambar Yarmo, Asim Nilofar, Khadijeh Beigom Ghoreishi
The phase structures of the catalysts were determined by X-Ray Diffraction (XRD) patterns using Bruker AXS D8 Advance X-ray Powder Diffractometer with Cu Ka (l= 0.15406 nm) at angle 2q = 20 - 80.
This indicated that the intercalation of aniline has caused the V2O5 lattice structure to collapse and the intercalated product is relatively poorly crystalline ascribed to the limited short-range order in accordance with Wu’s result [7].
References [1] Ullmam’s Encyclopedia of Industrial Chemistry, Release, 7th Edition, Wiley-VCH, Weinheim 2010 [2] M.C.
This indicated that the intercalation of aniline has caused the V2O5 lattice structure to collapse and the intercalated product is relatively poorly crystalline ascribed to the limited short-range order in accordance with Wu’s result [7].
References [1] Ullmam’s Encyclopedia of Industrial Chemistry, Release, 7th Edition, Wiley-VCH, Weinheim 2010 [2] M.C.
Online since: February 2012
Authors: Min Su, Sheng Chen, Qing Kang Zheng, Jian Wu Lan
Hexachlorocyclotriphosphazene (HCCP) (from Boyuan Chemistry Co, Ltd., Ningbo), toluene (AR grade), potassium hydroxide (AR grade), aniline (from Kelong Chemical Reagent Co., Chengdu) and triethylamine (from Kelong Chemical Reagent Co., Chengdu) were used as received.
Structure of HPACP was characterized by common spectroscopic methods.
Comparing the molecular structures of HPACP and PET, it is concluded that in the HPACP/PET system there were hydrogen bonds between amido of HPACP and carbonyl group of PET.
Structure of HPACP was characterized by common spectroscopic methods.
Comparing the molecular structures of HPACP and PET, it is concluded that in the HPACP/PET system there were hydrogen bonds between amido of HPACP and carbonyl group of PET.
Online since: February 2007
Authors: Ji Zhou, Shi Kao Shi, Jun Min Li, Rui Long Zong, Ji Ye Wang
Characteristics of Sr2CeO4 Powder Phosphor Prepared by
Combustion Route
Shikao Shi1,2, Jiye Wang
2, Junmin Li2, Ruilong Zong
1 and Ji Zhou
1*
1
State Key Lab of New Ceramics and Fine Process, Department of Materials Science & Engineering,
Tsinghua University, Beijing 100084, China
2
College of Chemistry, Hebei Normal University, Shijiazhuang 050091, China
Keywords: Combustion synthesis, Sr2CeO4, Phosphor, Luminescence
Abstract.
The crystal structure of Sr2CeO4 is orthorhombic with one-dimensional chains of edge-sharing CeO6 octahedra.
The crystal structure, particle morphology and photoluminescence (PL) spectrum of the as-prepared powder phosphor were characterized with X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS), scanning electron microscopy (SEM) and PL spectroscopy.
The crystal structure of Sr2CeO4 is orthorhombic with one-dimensional chains of edge-sharing CeO6 octahedra.
The crystal structure, particle morphology and photoluminescence (PL) spectrum of the as-prepared powder phosphor were characterized with X-ray diffraction (XRD), X-ray photoelectron spectrum (XPS), scanning electron microscopy (SEM) and PL spectroscopy.
Online since: August 2009
Authors: Ming Yang, Kai Cheng Zhang, Xiao Yang, Jing Ma
Synthesis and characterizations of cubic assembly composed of
platinum nanoparticles
Ming Yang1,a
*, Xiao Yang2,b, Jing Ma
1,c
, Kai Cheng Zhang1,d
1
School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, ChangQing
Garden, Hankou, Wuhan, 430023, P.
Fig. 3a was shown the cubic structure of Pt with average dimensions ca 350-450 nm.
The SEM image exhibits a clear assembly composed of platinum nanoparticles structure on the cubic surface.
Fig. 3a was shown the cubic structure of Pt with average dimensions ca 350-450 nm.
The SEM image exhibits a clear assembly composed of platinum nanoparticles structure on the cubic surface.
Online since: January 2007
Authors: Chang Kyu Rhee, Min Ku Lee, S.H. Woo
Viscosity and dielectric constants of the solvent media (20
oC)
Suspending media Molecular form Viscosity, η(mPa·s) Dielectric constant, ε η / ε
Water H2O 1 80.37 0.0124
Methyl alcohol CH3OH 0.55 33.64 0.0163
Ethyl alcohol C2H5OH 1.195 25.07 0.0477
Isopropyl alcohol C3H7OH 2.86 18.325℃ 0.15625℃
Results and discussion
The HPPLTed TiO2 particles had a purely rutile structure, as shown in the XRD pattern of Fig. 1
(a), and they were nearly all mono-dispersed.
Conclusion The sedimentation properties of HPPLTed TiO2 particles with a unique nano-structure consisting of a number of ultrafine aciculae have been studied with respect to various organic solvents.
Shaw: Introduction to Colloid and Surface Chemistry, Butterworth, London, p. 157, (1997).
Conclusion The sedimentation properties of HPPLTed TiO2 particles with a unique nano-structure consisting of a number of ultrafine aciculae have been studied with respect to various organic solvents.
Shaw: Introduction to Colloid and Surface Chemistry, Butterworth, London, p. 157, (1997).
Online since: March 2007
Authors: Yi Hua Cui, Stephen Lee, Bahman Noruziaan, Moe M.S. Cheung, Jie Tao
It is well known that the structure of wood fiber is very complicated, whether alkaline or silane solution does not have any effect the inside structure of wood fiber.
Bakraji, N.Salman: Radiation Physics and Chemistry. 66 (2003), p. 49
Bakraji, N.Salman: Radiation Physics and Chemistry. 66 (2003), p. 49
Online since: November 2013
Authors: Hamid Omidvar, Reza Pooladi, Hojatolah Rezaei
Distribution of thermal gradient in three samples (°C)
Summary and concluding remarks
In this research, we produced a highly adhesive aluminum oxide nano porous structure on the surface of the tool, using electrochemical method and anodizing process.
This structure acts as a reinforced texture for the aluminum titanium nitride which was coated on the tool, using PVD method.
Johansson, Template–Based fabrication of Nanostructured Materials, Department of Materials Chemistry, Box 538, Uppsala University, SE-75121 Upsala, Sweden
This structure acts as a reinforced texture for the aluminum titanium nitride which was coated on the tool, using PVD method.
Johansson, Template–Based fabrication of Nanostructured Materials, Department of Materials Chemistry, Box 538, Uppsala University, SE-75121 Upsala, Sweden
Online since: May 2015
Authors: Ion Riza, Marius Constantin Popescu
The latter is studied by several branches of science, such as special mathematics, chemistry, physics, electrochemistry and so on [1].
Corrosion influences the resistance structures of structures like multi-level buildings, bridges, hydro technical dams retaining millions of square meters of water, and so on.
Corrosion influences the resistance structures of structures like multi-level buildings, bridges, hydro technical dams retaining millions of square meters of water, and so on.