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Online since: October 2007
Authors: Shuang Shii Lian, Ian Bo Chen, Chia Ying Li, Wei Ja Shong, Ruey Yi Lee
This inconsistency with the unexpected outcome could be explained by the FCC structure formed in those alloys , which could be illustrated in the phase fraction diagram of Fig.1, therefore the developed interconnector will mainly consider the Fe-Cr alloys as candidate materials.
The G5 alloy is mainly composed of BCC structure and small amount of carbide, which may be attribute to its small expansion coefficient due to the stable phase of BCC below 1000°C. 3.
Morgiel: Materials Chemistry and Physics 81(2003), 434-437 [2] T.
Morgiel: Materials Chemistry and Physics 81, p 434-437, 2003 [3] T.
Online since: June 2014
Authors: N. Chanthima, S. Tuscharoen, J. Kaewkhao
It is observed that the transition energy levels vary with the Er2O3 concentration and depend on covalency and the asymmetry of Er-O local structure among the host matrices.
[4] Wang, R., Yang, Z., Zhou, D., Song, Z., and Qiu, J., 2014, “Structure and luminescent property of Er3+-doped germanate glasses”, Journal of Non-Crystalline Solids, Vol. 383, pp. 200-204 [5] Gandhi, Y., Ramachandra Rao, M.
[8] Xu, S., Fang, D., Zhang, Z., and Jiang, Z., 2005,” Effect of OH− on upconversion luminescence of Er3+-doped oxyhalide tellurite glasses”, Journal of Solid State Chemistry, Vol. 178, pp.2159-2162
[12] Dimitrov, V., and Komatsu, T., 2002, "Classification of Simple Oxides: A Polarizability Approach", Journal of Solid State Chemistry, Vol. 163, pp.100-112
Online since: April 2009
Authors: Tatsuki Ohji, Yoshitake Masuda, Kazumi Kato, Xiu Lan Hu
High-resolution TEM image of nanowhisker is showed in Fig. 3, which shows that they have single-crystalline structure.
On the other hand, well-aligned and orientated ZnO nanowhiskers had high specific surface area due to the continuous open porous structure.
Ballman, The Journal of Physical Chemistry Vol. 64 (1960) p. 688
Que, The Journal of Physical Chemistry B Vol. 108 (2004) p. 3955.
Online since: November 2013
Authors: Xin Li Tong, Zhi Dong Wu, Xuan Luo, Yong Tao Yan, Yan Hua Wang
Synthesis of the Gold-Supported Chitosan-modified Nanomaterials and Effect of Preparation Conditions Xinli Tong*1,a, Zhidong Wu1,a, Xuan Luo*2,b, Yongtao Yan1,a, Yanhua Wang1,a 1Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, P.
In recent years, silica-chitosan hybrid materials have been synthesized in various structures such as hierarchical porous materials [9, 10], silica beads [11], and composite membrane [12].
On the other hand, the effect of chitosan to silica ratio on physical properties of hybrid aerogels and the relation between chitosan concentrations and structure of porous silica products were also studied [14, 15].
Metal nanoparticles are an important subject in modern researches of chemistry and material science owing its superior properties in the catalysis and biochemistry field [16-20].
Online since: July 2014
Authors: Lan Bing Xu, Zhao Di Liu, Yue Zhang, Qiong Yin Zhang
The difficulties of dyeing of flax fiber The inherent factors of the difficulties of dyeing of flax fiber are that the flax fibers have a high degree of crystallinity and a high degree of orientation, with more closely structure, the inclination is small, and non-fiber ingredient is high.
During the formation of the flax roving process to chemically degumming, strong oxidation of serious damage to this process the molecular structure of cellulose hydroxyl and aldehyde groups, thereby reducing the dye is covalently bound to the cellulose and the formation conditions.[4] The methods of improving the dyeing of flax fiber To solve the problem of poor dyeability of flax fiber, at home and abroad have been modified flax fiber research,to improve its dyeing properties.
References [1] GAO Shuzhen, ZHAO Amu: Research flax fiber dyeing properties [J], Journal of Qiqihar University, Vol.17 , No.1 , Mar.2001.In Chinese [2] WU Hongling, XU Shunji, JIANG Shaojun: Research on dyeing properties of alkali modified flax fibers [J], Progress in Textile Technology, No. 2 , 2007.In Chinese [3] GUO Yalin, ZHAO Ming, HUANG Gu, etc: Affect the structural properties of flax fiber dyeing performance [J], Journal of Dalian Institute of Light Industry, Vol. 20, No. 1, Mar. 2001.In Chinese [4] SHI Jiaqiang, DONG Qinxia: Application flax fiber dyeing Difficulties and rare in flax roving dyeing [J], Textile Auxiliaries, Vol.14, No .2, Apr.1997.In Chinese [5] JIANG Xiankai, SUN Hongyan, LIN Long,etc: Urea improved dyeing properties of flax fiber pad[J], Journal of Natural Science of Hei Longjiang University, Vol.22, No.11, February.2005.In Chinese [6] SUN Hongyan, JIANG Xiankai, DAI Xuduo,etc: Improvement of flax fiber pad dyeing properties [J], Chemistry and Bonding, Vol
. 27, No. 3, 2005.In Chinese [7] JIN Zheng, JIANG Xiankai, SUN Hongyan, etc: Expanders for flax fiber pad dyeing performance improvements [J], Journal of Natural Science of Hei Longjiang University, Vo l.25, No.1.In Chinese February.2008 [8] CUI Guixin: Study on the application of ultrasound in dyeing of linen fabric [J], Textile Auxiliaries, Vol. 29 , No.12 , Dec.2012.In Chinese [9] DONG Qinxia, WEN Yuhua, MENG Fanjie: Application of Rare Earth in flax dyeing [J], Textile Auxiliaries,Vol.9, No.4, Dec.1992.In Chinese [10] WEI Zengzhong: On the application of rare earth chloride in flax dyeing [J], Heilongjiang Textile, Aug. 1997.In Chinese [11] WANG Lijuan, FENG Hao, LI Jian: Sodium copper chlorophyll flax fiber dyeing performance study [J], Chemistry and Industry of Forest Products, Vol. 27 Supplement, Oct. 2007.In Chinese
Online since: September 2021
Authors: Galina M. Danilova-Volkovskaya, Amina Vindizheva, Zaira Kharaeva, Seda Khashirova
The resulting polymer has the structure: where n = 515-525.
Based on PEEK composites, reinforced PEEK composite fibers were created for plates that fasten bone fragments together, and PEEK-hydroxyapatite composites were created as a similar substitute for bone tissue with a supporting function, as well as for supporting structures in bone tissue engineering.
Advances in chemistry and chemical technology. 31 (2017) 11-13
Arabian Journal of Chemistry. 14 (2021). 1-19
Online since: June 2014
Authors: Miriam A. Martins Alho, Ana María Herrera-Gonzalez, Jesús García-Serrano, Paola Belem Bocardo-Tovar, María Isabel Montalvo-Sierra
Heterocycles are useful in the coordination chemistry and design of supramolecular systems, where they are used as bi-, tri- and multidentate ligands [1].
The signal that appeared at 150.7 ppm was assigned to the quaternary aromatic carbon bonded to oxygen, at 126.9 ppm was assigned to the quaternary aromatic carbon bonded to the tetrazole, the signals at 121.6 and 128.6 ppm were assigned to the other two types of aromatic carbons of the structure, and the signal at 161.3 ppm is a characteristic signal of carbon of the tetrazole ring [6]. 3.2 Characterization of the hexakis[4-(2-amino-1,3,4-thiadiazol-5-yl)phenoxy] cyclotriphosphazene (V).
Steed, Encyclopedia of Supramolecular Chemistry (Marcel Dekker New York, 2004)
Thiosemicarbazone metal complexes: From structure and activity; The Open Crystallography Journal, 3, Italia (2010) p. 16-28
Online since: July 2011
Authors: Ying Jie Zhang, Jun Ming Guo, Yan Xia, Mei Huang
Effect of Temperature on Spinel LiMn2O4 by Molten-salt Flameless Combustion Synthesis Mei Huang1,2,a, Yan Xia1,2, Junming Guo 1,2,b, Yingjie Zhang 1,2,c 1Key Laboratory of Ethnic Medicine Resource Chemistry, State Ethnic Affairs Commission & Ministry of Education,Yunnan University of Nationalities, Kunming, China 650500 2School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, China 650500 amia1119@126.com, bguojunming@tsinghua.org.cn (corresponding author), cyingjie@kmust.edu.cn (corresponding author) Keywords: molten-salt flameless combustion synthesis; spinel LiMn2O4; Li-ion battery; cathode materials Abstract: Effect of calcination temperature on spinel LiMn2O4 by molten-salt flameless combustion synthesis using the lithium acetate (lithium nitrate), manganese acetate (manganese nitrate) as raw materials was studied.
Electrochemical properties of electrode materials can be determined by their structure integrity, particle size and dispersibility, morphology, density, etc.
Han, et al, Synthesis and crystal structure of LiMn2O4 cathode material for Li-ion battery, Chin.
Online since: October 2011
Authors: Hong Chi Zhao, Li Bin Bai, Xin Ying Qin, Hai Song Zhang, Xin Wu Ba
Synthesis of Polystyrene-g-starch Copolymer initiated by Potassium Diperiodatonickelate(IV) Libin Bai1,a, Xinying Qin1,b, Haisong Zhang1,c, Hongchi Zhao1,d Xinwu Ba1e* 1.College of Chemistry and Environmental Science, Hebei University,Baoding, 071002, P.R.
At the same time, the structure of graft copolymers was characterized by SEM, IR.
This can be ascribed to the destroyable starch’s crystal structure, caused by gelatinization reaction.
[5] H.De Bruyn, E.Sprong, M.Gaborieau, G..David, J.A.Roper, R.G..Gilbert: Journal Polymer Science Part A: Polymer Chemistry, 44 (2006), p. 5832
Online since: October 2014
Authors: Dan Hua Zhu, Jing Kun Xu, Bao Yang Lu, Dong Lan Huang, Xiu Mei Ma, Wei Qiang Zhou, Feng Xing Jiang
Porous Poly (5-cyanoindole) Electrode with High Capacitance Weiqiang Zhou 1, a, Donglan Huang 2,b, Xiumei Ma1,c, Jingkun Xu 1,d,*, Fengxing Jiang 1,e, Baoyang Lu 1,f and Danhua Zhu 1,g 1 Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China; 2 SAE Material Science Laboratory, SAE Technologies Development CO., Ltd., Dongguan 523087, PR China azhouweiqiang911@126.com, bdl_huang@sae.com.hk, c1294742113@qq.com, dxujingkun@tsinghua.org.cn, ejiangfx82@163.com, flby1258@163.com, g79118056@qq.com Keywords: supercapacitors, conducting polymers, poly(5-cyanoindole), electrodeposition, specific capacitance Abstract.
This morphological structure showed following advantages as supercapacitors electrode: (1) The micro-sized pores help de-polarisation of the ion concentration and hence a high speed of charge-discharge, and the nano-sized pores result in a high interfacial area and therefore a high specific capacitance. (2) The porous PCIn with large surface area creates efficient diffusion paths for electrolyte ions, which would significantly accelerate intercalation of ions and enhance utilization rate of electrode materials.
Besides the large surface area and porous structures, the high specific capacitance and stability are very crucial factors for the practical application of supercapacitors electrode.
Acknowledgements This work was supported by the National Natural Science Foundation of China (Grant Nos. 51073074), and the postdoctoral-research project of Jiangxi key laboratory of organic chemistry (3000035608).