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Online since: January 2010
Authors: Run Cang Sun, Jie Fang Zhu, Ming Guo Ma
China 3 Department of Materials Chemistry, The Ångström Laboratory, Uppsala University, Uppsala 75121, Sweden ∗Correspondence author: a mg_ma@bjfu.edu.cn, b email:jiefang.zhu@mkem.uu.se, cemail:rcsun3@bjfu.edu.cn Keywords: Hydrothermal, wollastonite, nanocomposites, luminescence Abstract Luminescent wollastonite-CePO4 nanocomposites have been successfully synthesized using Ca(NO3)2·4H2O, Na2SiO3·9H2O, and CePO4 by hydrothermal method at 200 oC for 24 h.
The reflection peaks of the sample consisted of CePO4 with a monoclinic structure (JCPDS 32-0199).
The corresponding SAED pattern indicated the polycrystalline structure of the CePO4 nanorod (the inset of Fig. 4c).
Online since: August 2012
Authors: Sang Jin Cho, Hoon Bea Kim, Dong Geun Jung, Jin Hyo Boo
Study on the characteristics of ThioPP thin films for low-κ applications Sang-Jin Cho1, a, Hoonbea Kim2,b, Donggeun Jung2,c and Jin-Hyo Boo1,d,* 1Department of Chemistry Sungkyunkwan University Suwon 440-746, Korea 2Department of Physics Sungkyunkwan University Suwon 440-746, Korea abluescreen@skku.edu, b firedgn@naver.com, c djung@skku.ac.kr, djhboo@skku.edu Keywords: Plasma polymer; Low-κ; Electric properties Abstract.
The κ values were determined from the measurement of the capacitance in the metal-insulator-silicon-metal (MISM) structure of Al/hybrid polymer thin film/Si/Al.
The capacitance was determined at 1MHz with the MISM structure by precision LCR meter (Hewlett-Packard, HP 4284B).
Online since: July 2011
Authors: Pei Chang Deng, Jie Zhen Hu, Xiang Wen Wang, Hai Bo Xu
Stable Ti/IrO2 Anode with Iridium-Titanium Oxide Interlayers for O2 Evolution Jiezhen Hu 1,a, Peichang Deng 1,b, Xiangwen Wang 1,c and Haibo Xu 2,d 1College of Ocean and Meteorology, Guangdong Ocean University, zhanjiang, guangdong, 524088, China 2College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266003, China ajiezhen0520@yahoo.cn, bdpc0520@yahoo.cn, cjinnianwy@163.com, dxuwangri@163.com Keywords: IrO2, Interlayer, TiN, TiO2, Stability, Ta2O5.
This structure could effectively block oxygen atom or molecule penetrating into the titanium substrate, and was in favor of a larger surface area as electrode material.
Judging from peak positions, they corresponded with the rutile structure, and no TiO2 is detected, indicating that TiO2 and IrO2 formed a binary solid solution in a rutile phase[8].
Online since: May 2011
Authors: Chun Hu Li, Jun Jie Bian, Xin Min, Shu Zhang
Supported Manganese Dioxide Catalyst for Seawater Flue Gas Desulfurization Application Junjie Bian a, Xin Min b,Shu Zhang c and Chunhu Li d Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education, Ocean University of China ajunjiebian@ouc.edu.cnmail, bminxin2009@163.com, conlytime219@yahoo.cn, dlichunhu@ouc.edu.cn Keywords: Manganese dioxide; Preparation; Seawater; Flue gas desulfurizatio.
Further attempts to analyze the supported MnOx structure were carried out by XPS.
The combination of an active specie (MnO2) and a hydrophilic support (ceramic) with a suitable open structure leads to a high SO2 removal efficiency for flue gas.
Online since: May 2012
Authors: Erik Janzén, Yaroslav Koshka, Franziska Christine Beyer, Bharat Krishnan, Siva Prasad Kotamraju, Olle Kordina, Anne Henry
Beyer2,c, Anne Henry2,d, Olle Kordina2,e, Erik Janzén2,f and Yaroslav Koshka1,g* 1Mississippi State University, Department of Electrical and Computer Engineering, Mississippi State, Mississippi 39762, United States 2Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden asivakotam@gmail.com, bbharat.kris@gmail.com, cfbeyer@ifm.liu.se, danhen@ifm.liu.se, eolkor@ifm.liu.se, ferija@ifm.liu.se, gykoshka@ece.msstate.edu, *corresponding author Keywords: epitaxial growth, chloro-carbon, deep levels, photoluminescence, DLTS, Schottky.
Some of the test structures were found to be free from TDs, while the others clearly had one or more TDs inside the Schottky contact area.
While testing of such not-terminated structures cannot be used as a conclusive evidence, this result serves as a preliminary indication that the drift regions grown at 1300°C contain rather low concentrations of lattice defect that are usually responsible for the degradation of the reverse characteristics.
Online since: May 2006
Authors: William Bonfield, Nelesh Patel, Serena Best, Mamoru Aizawa, Alexandra E. Porter
Best2,d and William Bonfield 2,e 1 Department of Industrial Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Japan, 214-8571 2 The Cambridge Centre for Medical Materials, Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, UK a mamorua@isc.meiji.ac.jp, bez8046@yahoo.co.uk, caep30@cam.ac.uk, d smb51@cam.ac.uk, ewb210@cam.ac.uk Keywords: Hydroxyapatite, Apatite fibre, Silicon-containing apatite, Homogeneous precipitation method Abstract.
The present absorptions indicate that the CO32 group has substituted for both PO43 and OH groups in the HAp structure.
The SAED patterns at points of A, B and C showed clear spots corresponding to an apatite structure with high crystallinity.
Online since: July 2011
Authors: Chao Deng, Jin Zhang, Fa Qi Yu, Na Sun, Mei Shan Pei
The Effect of Super-absorbent Polymer as a Self-curing Admixture on the Performance of Mortars Faqi Yu1, Na Sun1, Chao Deng1, Jin Zhang1, Meishan Pei1,a School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China a peims2000@126.com Keywords: Super-absorbent polymer; mortars; self-curing; mechanical properties Abstract.
Early-age cracks could severely affect the durability of a concrete structure.
During hardening, cement-based materials would form a dense structure, in that case, the water was so difficult to enter that could not improve the internal humidity and inhibit the contraction, so traditional methods were not suitable for high performance concrete curing.
Online since: May 2011
Authors: Quan Xiao Liu, Wen Cai Xu, Jin Li Li, Yu Bin Lv
Table2 Effect of reaction temperature on performance of silica temperature (℃) names of index 60 65 70 75 BET specific surface area (m2/g) 334 336 292 215 CTAB specific surface area (m2/g) 168 143 129 113 DBP absorption value (cm3/g) 2.78 2.86 2.85 2.82 From Table2, it can be found that as the temperature rise, BET and CTAB specific surface area decreased, DBP absorption value has changed little. 3.3 Effect of pH value The pH value directly affects the polymerization mechanism of silicic acid and results in the different structure and properties of polysilicic acid.
Maybe this is because that it undermined the micro-pore structure to smash silica, the pile up density decreased significantly after been smashed.
Journal of Inorganic Chemistry.
Online since: October 2011
Authors: Mamoru Aizawa, Michiyo Honda, Toshiisa Konishi, Minori Mizumoto, Y. Nakashima
Aizawa1,2,a 1 Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan 2 Kanagawa Academy of Science and Technology (KAST), 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa, 213-0012, Japan amamorua@isc.meiji.ac.jp, bap-honda@newkast.or.jp, cap-konishi@newkast.or.jp, dap-mizumoto@newkast.or.jp Keywords: Hydroxyapatite, Silicon-substituted hydroxyapatite, Inositol phosphate, Cement.
In recent investigations, the bioactivity of the HAp has been shown to be enhanced by the substitution of suitable ions into its crystal structure/lattice.
Structural parameters of Si-HAP The effect of the Si substitution of the crystal structure of HAp was refined by PDXL software.
Online since: May 2014
Authors: Na Na Zhang, Wei Gu, Fang Qin Xu, Xiao Fang Yang
E-ink is a liquid material, it composed by millions of microcapsules, each microcapsule contains a black and white particle, respectively with positive charge and negative charge, E-paper is comprehensive application of chemistry, physics and electronics.
CLCD technology mainly used in color E-paper, this is an unconventional display technology, its material structure similar to cholesteric molecules.
Electrowetting display include conductive liquid, hydrophobic oily medium, a hydrophobic insulating layer and transparent electrode, its pixel conversion very quickly, ideal for displaying animated requirements, also have characteristics of simple structure, easy to prepare, power, and flexible display, its brightness and contrast far more than other existing E- paper display technology.