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Online since: September 2016
Authors: Hong Xia Liu, Hu Shan Ma, Ke Jian Li
Results and discussions Electronic structures of pristine (6,2) SiCNT The band structure and partial density of states (PDOS) near band gap of the (6,2) SiCNT are calculated first.
Electronic structures of antisite defects Antisite defects also have significant impacts on the structures and electronic properties of nanotube materials [22].
Fig.4 Band structures for a (6,2) SiCNT with a CSi (a) or SiC (b) defect.
Xie, An electronic-Structure study of single native defects in beta-SiC, J.
Cocoletzi, Influence of point defects on the structural and electronic properties of SiC nanotubes, Central European Journal of Chemistry 12 (2014), 53
Online since: July 2012
Authors: Chang Cheng Wang, Shi Yi Zhou, Jing Li, Zhi Song, Lin Li, Fang Mei Hou
Research Progress on Processing Technology of Tripe Lin Li1, 2, 3, a, Chang Cheng Wang4, b,*, Shi Yi Zhou1, 3, c, Jing Li3, d, Zhi Song3, e and Fang Mei Hou3, f 1 Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu University of Technology, Chengdu, China 2 Institute of Green Catalysis and Synthesis, College of Materials and Chemistry Chemical Engineering, Chengdu University of Technology, Chengdu, China 3 College of Materials and Chemistry Chemical Engineering, Chengdu University of Technology, Chengdu, China 4 College of Energy Resources, Chengdu University of Technology, Chengdu, China alilin@cdut.edu.cn, bwcc-126@163.com, cphylles@126.com, dli@cdut.cn, e230972227@qq.com, fxxthfm706@hotmail.com *Corresponding author: Changcheng Wang, male, born in 1979, associate professor, PhD on mineral survey and exploration in Chengdu University of Technology in 2006, mainly engaged in reservoir geochemistry and reservoir prediction works.
Table 2 The comparison of different trips' sensory evaluation status colour and lustre Structure of tissue smell palatability Fresh tripe medium medium high low Dehydrated tripe low low medium low Rehydrated tripe high high high high Rehydration is a process which makes the dehydration materials regain the fresh and alive state by absorbing water.
Protease can decompose the collagen and elastin in tripe; it can also break up the links between amino acids and damage the structure of protein.
Acknowledgements This work was financially supported by the Open Foundation of Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions (201107), Cultivating Program for Excellent Innovation Team of Chengdu University of Technology (200911) and Young Scientist Project of Chengdu University of Technology (201236).
Online since: June 2008
Authors: Rogerio Colaço, Elisabete R. Costa, António Correia Diogo
Control of the bitumen chemistry is most probably the key to control its microstructure and, by consequent, to control its final properties in a consistent mode.
The catana structures presented in bitumen S show ramifications and have higher L/D ratio than the ones from bitumen P.
Moreover, it is shown that reactive modifiers added to the bitumen change the existent microphase structure.
Modifications in the microphase structure were also found as a consequence of thermal ageing.
Petroleum Chemistry Division, American Chemical Society, San Diego, California (2001) p. 110-114 [4] J-F.
Online since: March 2006
Authors: Lorena L. Garza-Tovar, Leticia M. Torres-Martínez
Their structures were found to belong to the family M2TinO2n+1 [9, 10] based on rectangular tunnel framework.
Recent work on the system SrO-Li2O-TiO2 [11] reported both the presence of the phase SrLi2Ti6O14, and its structure which was solved by means of a single crystal X-ray diffraction.
The structure of this new titanate, SrLi2Ti6O14, is built by edge and corner sharing TiO6 octahedra forming layers parallel to the (100) plane.
López: Journal of Materials Chemistry Vol. 12 (2002), p.1 [7] Christian Dussarrat, R.
Rao (Ed.): Chemistry of Advenced Materials (Blackwell Scientific Publications, 1993)
Online since: September 2013
Authors: Jun Ming Guo, Bin Li, Hong Li Bai, Xian Yan Zhou, Can Can Peng, Zhi Fang Zhang, Ming Wu Xiang
Effect of β-cyclodextrin on electrochemical properties of LiMn2O4 synthesized by solid-state combustion synthesis Hongli Baia, Xianyan Zhou, Cancan Pengb, Bin Li, Zhifang Zhang, Mingwu Xiang, Junming Guoc* Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan 650500, P R China Email: abhl0873@163.com, b823601671@qq.com, cguojunming@tsinghua.org.cn (corresponding author) Keywords: Solid-state combustion synthesis; Spinel LiMn2O4; Lithium-ion battery; β-cyclodextrin; Electrochemical performance.
The effects of amount of β-cyclodextrin and calcination temperature on their structure and electrochemical properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), galvanostatic charge-discharge test and cyclic voltammetry (CV).
Currently, the cathode materials focus on layered structure LiCoO2, LiNiO2, LiMnO2 and spinel LiMn2O4.
To investigate the temperature effect, a mixture with 5 wt% β-cyclodextrin was selected and calcined at different temperature of 400, 500, 600 and 700°C for 1h. 2.2 Characterization The phase identification and structure of products were performed by the X-ray diffraction (D/max-TTRIII, Japan,).
When β-cyclodextrin was added by 5 wt%, 10 wt% and 20 wt%, the enhanced diffraction peaks were identified as a single phase of cubic spinel LiMn2O4 structure with the space group Fd3m and no notable variation of secondary phase or impurities for the samples were observed.
Online since: February 2013
Authors: Bo Meng, Peng Tian, Hong Bo Zhang, Tian Ling Qin, Zhao Zhao Zhang, Yang Yang Song
The Synthesis and Characterization of N-butyl Pyridine Tetrafluoroborate Peng Tian1,a*, Bo Meng1,a, Hongbo Zhang2,b, Tianling Qin2,b, Yangyang Song1,a and Zhaozhao Zhang1,a 1College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China 2Laboratory Centre, Shenyang Normal University, Shenyang 110034, China aemail: tianpenglnu@sina.com, bemail: zhanghongbo2010@126.com *: email: tianpenglnu@sina.com Keywords: BPC-BF4; room temperature ionic liquids; UV–spectrum Abstract: The halogenated hydrocarbon and pyridine are used in the synthesis of room temperature ionic liquid intermediates chlorinated N-butyl pyridine BPC, and the nuclear magnetic resonance instrument and the intermediate infrared spectrometer are used in chemical structure characterization, so it is determined that the synthesis is the room temperature ionic intermediates BPC.
We use infrared spectrometer for the structure characterization, it is proved that we have gotten BP-BF4 room temperature ionic liquids.
As part of our on going program to characterize ionic liquids, we determined the level of impurities present in ionic liquids and show how these affect their physical properties[11], the ionic liquids can be in a wide temperature range in liquid form existence, high thermal stability[12], The structure and dynamics of ionic liquids have been extensively investigated[13].
We use infrared spectrometer for the structure characterization, it is proved that we have gotten BP-BF4 room temperature ionic liquids.
Green Chemistry, Vol, 9 (2007) 549
Online since: March 2022
International conference on “Material Science and Nanotechnology” is organized to bring together all technologists, scientists, professors, research scholars, and students to promote interaction to review new challenges and latest developments in the fields of physics, chemistry, materials science, and nanotechnology.
Materials science covers the study of the properties of solid materials and how a material’s composition and structure govern those properties.
Online since: January 2013
Authors: Lu Lu, Meng Zhang, Lei Li, Shi Jun Wei
A B Fig.1 SEM images of blank (A) and drug loaded (B) PLA microspheres D C B A F E Fig.2 Digital camera images of macroscopic multi-membrane hydrogels (A-D) and SEM images of freeze dried multi-membrane structure hydrogel (E, F).
The onion-like structure is based on the crosslinking reaction between sodium alginate and the divalent cations (Ca2+).
Fig.4 Release curve of model drugs from multi-membrane and bulk hydrogels in physiological saline Summary The drug release in the multi-membrane hydrogels system is well controlled due to its structure.
Ichikawab, European Journal of Pharmaceutics and Biopharmaceutics, 20,(2000),p.27; [3].Guo J in tang, L.i.X., L iL ing, Chemistry Bulletboard,(2004),p.198; [4].Despang, F., et al., Materialwissenschaft und Werkstofftechnik, 761-767,(2005),p.36; [5].Lin, H.R. and Y.J.
Banerjee, Chemistry Review,4453-74,(2011),p.111; [7].Bae, S.E., et al., J Control Release,37-43,(2009),p.113; [8].Simó, C., A.
Online since: July 2013
Authors: Xiao Pin Ma, Yan Yan Huang, Zhi Hong Jing, Qian Li, Fen Li
Synthesis and Gas Sensing Properties of Palladium Doped Titanium Dioxide Nanoparticles Fen Li, Qian Li, Xiaopin Ma, Yanyan Huang and Zhihong Jing* College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P.
The positions of all the sharp peaks can be indexed to the anatase TiO2 structure (JCPDS card No. 21-1272) and correspond to (101), (004), (200), (211) and (204).
At the same time, the observed new peaks at 2θ = 40.1 and 46.6o can be indexed to the (111) and (200) planes of the cubic structure of Pd (JCPDS card No. 65-2867).
Structure and morphological analysis Figure 3 (a) shows a SEM image of the pure TiO2 nanoparticles.
Acknowledgements The work was financially supported by the National Nature Science Foundation of China (No. 21271115), Shandong Natural Science Foundation (ZR2010BM010), and the foundation of Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education (201002).
Online since: September 2015
Authors: J. Mary Gladis, C. Reshma
Synthesis and Characterisation of Ternary Nanocomposites as Cathode Material for Lithium-Sulphur Batteries Reshma C1,a and J Mary Gladis1,b* 1Department of Chemistry, Indian Institute of Space Science and Technology Valiamala,Thiruvananthapuram 695547, India.
The electrochemical characteristics based on intercalation chemistry limit the fabrication of high energy density batteries.
In this report, we intend to discuss the preparation and characterization of novel ternary nanocomposite composed of MWCNT sulphur and polyindole (MWNT/S/Pin) with a core–shell nano-tubular structure.
SEM microstructure (Fig.3) shows uniform tubular structure of MWCNT.
Huang, Dual core– shell structured sulphur cathode composite synthesized by a one-pot route for lithium sulphur batteries, J.