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Online since: October 2012
Authors: Yan Zhao, Xiao Min Hu, Wei Li, Bin Hui Jiang
The NaCl concentration of solution was monitored and tested by a conductivity meter(DDS-307).The morphology and physical structure of AC coating electrodes were observed by SEM(SSX-550).The The electrochemical behavior of AC coating electrode was analysed by cyclic voltammetry(CV) using an electrochemical workstation(CHI660D).In a three-electrode system,The AC coating electrode,platinum electrode and saturated calomel electrode(SCE) were used as the working,counter and referred electrode,respectively.Cyclic voltammetry was measured in the 0.1mol/L NaCl electrolyte,at a scanning rate of 10mV/s with a potential range of-1.2 to 1.2V at ambient temperature.
The morphology and physical structure of AC coating electrodes were characterized by SEM as depicted in Fig.2.It could be shown that the electrodes were irregular grid-like porous materials,and both ACP and PVDF binder were bound together from the Fig.2.Actually,the materials of the coating electrodes prepared did not drop even when the electrode surface was rubbed by hand.It seemed that the electrodes had enough mechanical strength and thermal stability to implement the electrosorption experiments.
Journal of Industrial and Engineering Chemistry. 16 (2010) 401-405
Online since: September 2012
Authors: Jian Fei Xia, Zong Hua Wang, Li Shun Bi, Fei Fei Zhang, Yan Zhi Xia, Yan Hui Li
These refreshing systems with high surface area, outstanding conductivity, and other excellent properties from its special structure, have made a large impact in the fields of nanoelectronics [3], sensors [4], drug delivery [5], and so on.
Fig.1a displays the crinkled paper-like two-dimensional structure of GO nanosheets.
Acknowledgements This work was financially supported by the National Natural Science Fundation of China (authorization number: 20975056 and 81102411); Shandong (ZR2011BZ004 and ZR2011BQ005); JSPS and NSFC under the Japan-China Scientific Cooperation Program (21111140014); State Key Laboratory of Analytical Chemistry for Life Science (SKLACLS1110) and The Taishan Scholar Program of Shandong Province (TS20070711), China; and the National Key Basic Research Development Program of China (973 special preliminary study plan) (Grant no.: 2012CB722705).
Online since: January 2014
Authors: Xiao Yu Peng, Kelin Huang, Fu Xian Ruan, Zhi Peng He, Hong Lang Song, Jing Hu, Hui Qun Yu, Dan Kui Liao, Guo Song Sun, Shi Yong Huang, Zhi Ming Wei
Isoprene, dichloroacetic acid and the standard product of prenyl alcohol produced by Aladdin chemistry Co.Ltd; Dichloroacetate sodium obtained from Shanghai Jissbon Co.Ltd; All other chemical reagents were analytical grade and used directly without further purification; Gas chromatograph(Agilent 6820) produced by Agilent Co.Ltd; Infrared spectrometer(NICOLET 380) produced by Thermo Electron Scientific Instruments Corporation; Hot type magnetic heating stirrer(DF-101S) produced by Jintan medical instrument factory.
The isoprene has a double bond structure and its chemical property is very active, more prone to intermolecular or intramolecular cycloaddition reaction, generated polymers or ring structure material, the reaction must be carried out under acidic condition, and the pH requirements are more demanding.
Online since: February 2014
Authors: Risdiana Risdiana, Lusi Safriani, Rahmat Hidayat, Annisa Aprilia, I. Kawasaki, A. Bahtiar, Rustam E. Siregar, Tobat P.I. Saragi, Isao Watanabe
Raya Bandung-Sumedang km.21 Jatinangor Sumedang, Indonesia 2Physics of Magnetism and Photonics Research Division, Faculty of Mathematics and Natural Science, Bandung Institute of Technology, Ganesha 10 Bandung, Indonesia 3Macromolecular Chemistry and Molecular Materials (mmCmm), Department of Mathematics and Science, Centre for Interdisciplinary Nanostructure Science and Technology (CINSaT), Universtity of Kassel, Heinrich-Plett-Strasse 40, D 34132 Kassel, Germany 4Advanced Meson Science Laboratory, Nishina Center for Accelerator-Based Science, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan alusi.safriani@phys.unpad.ac.id (corresponding author) Keywords: Charge carrier dynamics, P3HT:nanoparticle ZnO, LF-μSR, intra-chain diffusion, inter-chain diffusion Abstract.
The charge carrier mobility was found to change from one-dimensional model (dominated by mobility along (intra) to the polymer chain) to a three-dimensional one (dominated by mobility perpendicular (inter) to the polymer chain), which is strongly depending on their molecular structure and temperature [2,3].
However, the clearly explanation about the effect of ZnO to the charge carrier mobility in P3AT due to their molecular structure and temperature dependence are not well understood yet.
Online since: April 2014
Authors: Hasan I. Dawood, Kahtan S. Mohammed, Mumtaz Y. Rajab, Nurafifah R. Ismail
The microstructure of the base metals in Fig. 5(a) and (b), showed the elongated grain structure reflecting the original cold rolling process on the as received base metal.
In general the WZ has a dendritic structure due to the fast heating of the base metal melt [9].
Messler, Principles of welding: processes, physics, chemistry and metallurgy.
Online since: June 2014
Authors: Kitipun Boonin, Warawut Sa-Ardsin, J. Kaewkhao, Patarawagee Yasaka
The decrease of density indicates that the non-bridging oxygen increases up to 0.10 mol% of Sm2O3, while the increase of density shows the increase in oxygen packing density and hence the structure becomes more compact [7].
Shekhovtsov et al., Structure and growth of pure and Ce3+-doped Li6Gd(BO3)3 single crystals, Crystal Growth 242 (2002) 167–171
Eraiah, et al., Optical properties of samarium doped zinc-phosphate glasses, Journal of Physics and Chemistry of Solids 68 (2007) 581–585 [8] V.
Online since: February 2013
Authors: Syazana Ahmad Zubir, Ahmad Sahrim, Suzana Ali Ernie
It is believed that the presence of large number of surface functionality due to the hyperbranched structure of palm oil polyol could help in mixing process and enhance the interactions between precursors [1].
It suggests that the presence of clay hindered the chains mobility and thus interrupt their ability to pack into crystalline structure.
Cho, Effect of functionalized carbon nanotubes on molecular interaction and properties of polyurethane composite, Macromolecular Chemistry Physics, 207 (2006) 1773-1780
Online since: January 2016
Authors: Jitlada Chumee, Sarisa Pinkham
Preparation of spherical rice husk zeolite NaY granules for adsorption of Cu2+ Jitlada Chumee1,a* and Sarisa Pinkham2,b 1Department of Chemistry, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand 2Department of Informatics Mathematics, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand ajitlada.ch@ssru.ac.th, ajitladachumee@yahoo.com, bSerisa.pi@ssru.ac.th Keywords: Rice husk zeolite NaY; Alginate; Granulation; Bentonite; Adsorption Abstract Spherical rice husk zeolite NaY granules (RH-NaYg) were prepared by cross-linking of alginate biopolymer and using bentonite as a binder to obtain a uniform shape.
Because of the faujasite crystalline aluminosilicates structure (FAU) with that Si/Al ratio equal 2.5 and microporous property with a high surface area.
The adsorption capacity has decreased with surface area and the amount of bentonite that contain in RH-NaYg as the binder due to the Cu2+ possibly adsorbed on Lewis acid site that have the negative charges on zeolite structure [2,3].
Online since: February 2012
Authors: Li Luo, Kai Long Hu, Ai Xiang Zeng
Due to the unique hollow structure and physical mechanics properties, Ni, Cu, Ag and other metals are often coated on fly ash cenospheres to produce lightweight metal matrix composites, which are useful in manufacturing conductive polymer for EMI-shielding and microwave absorbing materials[1-4].
The structure analysis of Ni-P-coated fly ash cenosphere particle surface was carried out (within 2-h range of 10–80°) using Rigaku X-ray Diffractometer (XRD) utilizing CuKa X-radiation of wavelength 1.54A°.
The variation in the surface chemistry on fly-ash cenosphere particles during the electroless Ni-P coating process was studied with the help of KRATOS XSAM-800 (XPS) spectrometer using MgKα X-radiation (1252.6eV) at a power of 350W.
Online since: March 2016
Authors: Vedamanickam Sampath, Vladimir G. Shavrov, Victor V. Koledov, Dmitriy S. Kuchin, Peter Lega, Alexey M. Zhikharev
Nanofabrication has as its primary objective the production of nanoscale structures that can give rise to a new generation of frontier components, devices, nanotools.
Cagliani et al. [8] fabricated the smallest microgripper to date showing repeatable, 3D nanomanipulation of sub-100 nm structures.
Manipulation of gold nanoparticles: influence of surface chemistry, temperature, and environment (vacuum versus ambient atmosphere).