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Online since: July 2020
Authors: Fariati Fariati, Stephane Golhen, Wiwin Dwi Jayanti, Ade Rifaldi, Husni Wahyu Wijaya, I Wayan Dasna
Synthesis and Characterization of Complex from K4[Co(SCN)6], Zinc(II) Chloride and Quinoline as Electrode Material of K-Ion Battery ADE Rifaldi1, FARIATI1, HUSNI Wahyu Wijaya1,2, WIWIN Dwi Jayanti1, STEPHANE Golhen3, I Wayan Dasna1,2,a* 1Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jalan Semarang 5, Indonesia 65145 2Center of Advanced Materials for Renewable Energy (CAMRY), Universitas Negeri Malang, Jalan Semarang 5, Indonesia 65145 3Univ Rennes, CNRS, ISCR [(Institut des Sciences Chimiques de Rennes)] – UMR 6226, F-35000 Rennes, France a*idasna@um.ac.id Keywords: K-Ion Battery, Prussian Blue Like, cyclic voltammetry, electrode material.
Application of KIB as electrode instead of LiB is not only because potassium is economical but also because KIB contains a high concentration of potassium cations in its structure, which can easily change with other cations, resulting in a facile intercalation process.[1] PB has an empirical formula FeIII4[FeIICN)6]3 which has [FeII(CN)6]4- anion with octahedral geometry.
Employing of thiocyanate ion (SCN-) ligand is expected to give a larger cubic cavity in its formed structure.
;Gazo, “Structure and classification of thiocyanates and the mutual influence of their ligands,” Chem.
Online since: November 2016
Authors: C. Schäfer, Olaf Engler, Yasuhiro Aruga, Calin D. Marioara, Henk Jan Brinkman, Hisao Shishido, Masaya Kozuka
Aruga3,g 1 Hydro Aluminium Rolled Products, Research and Development Bonn, D-53014 Bonn, Germany 2 SINTEF Materials and Chemistry, Dept.
A Cs probe corrected high angle annular dark field scanning TEM (HAADF-STEM) JEOL ARM200F was also used for high-resolution imaging of precipitate structures.
Evidently, there is no significant difference in the crystal structure of the precipitates between the NA and PA materials.
In the PA material these clusters are larger in size, have higher volume and appear to be more structured.
Online since: September 2017
Authors: Muhamad Afiq Misman, A. Rashid Azura
Introduction Sago starch (SS) is the combination of two major carbohydrate polymers which are linear chain of amylose (molecular weight of 150 – 600 KDa) and branched structured of amylopectin (average of 17 – 26 glucosyl unit attached at the C6 of the pyranosyl group) [1].
Amylopectin has branching structure and higher molecular weight than amylose.
The presence of hydroxyl groups in amylopectin structure resulted in poor interfacial adhesion between filler and NR atex matrix thus contributed to the decreased in strength.
Utilization of starch to accelerate the growth of degrading microorganisms on the surface of natural rubber latex films, Journal of Chemistry and Chemical Engineering, 7, pp. 137-144
Online since: May 2015
Authors: Nikola Peřinka, Markéta Držková, Danijela V. Randjelović, Paolo Bondavalli, Patrycja Bober, Tomáš Syrový, Yvan Bonnassieaux, Jaroslav Stejskal, Milena Hajná
Fresnel 1, 91767 Palaiseau, France 4Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic 5LPICM, Ecole Polytechnique, CNRS, 91128 Palaiseau, France anikola.perinka@student.upce.cz, bmarketa.drzkova@upce.cz, cdanijela@nanosys.ihtm.bg.ac.rs, dpaolo.bondavalli@thalesgroup.com, em.hajna@imc.cas.cz, fbober@imc.cas.cz, gtomas.syrovy@upce.cz, hyvan.bonnassieux@polytechnique.edu, istejskal@imc.cas.cz Keywords: polyaniline, poly(N-vinylpyrrolidone), ink-jet printing, spray coating, sensor, atomic force microscopy Abstract.
For the spray-coated layer structure, significant thickness variation throughout the area was revealed, where individual droplets could be clearly observed.
This is in the contrast to the structure of ink-jet printed layers, where was no evidence of the discrete droplets.
This indicates a formation of waved structure with the periodicity higher than several micrometers.
Online since: August 2013
Authors: Mohsin M. Sies, Ahmed G. Dairobi, Aminuddin Saat, Ali Abuelnuor Abdeen Abuelnuor, Seyed Ehsan Hosseini, Mazlan Abdul Wahid, M. Kabashi Elbasheer, H.A. Mohammed, A.N. Darus
CFD calculations were performed using simple sub-models: k−ε for turbulence, one step Arrhenius approach for chemistry and a flux model for radiation [3, 18].
Hasegawa, Effect of air preheat temperature and oxygen concentration on flame structure and emission, Journal of Energy Resources Technology-Transactions of the Asme, vol. 121, pp. 209-216, Sep 1999
Smoot, Comparison of measurements and predictions of flame structure and thermal NOx, in a swirling, natural gas diffusion flame, Combustion Science and Technology, vol. 93, pp. 193-210, 1993
Mohamed, Hmaeid Bentîcha and Sassi Mohamed., Numerical Modeling of the Effects of Fuel Dilution and Strain Rate on Reaction Zone Structure and NOX Formation in Flameless Combustion, Combustion Science and Technology, vol. 181, pp. 1078-1091, 2009
Online since: February 2022
Authors: A.S. Kuz'mina, Mikhail P. Kuz'min, V.S. Volosatova
The principal possibilities of controlling the superconducting properties of such structures by means of a magnetic field have already been predicted and partially confirmed: spin-dependent superconductivity, spin-valve effect, superconductivity localized at domain boundaries, increased pinning of vortices due to the interaction with the domain structure, as well as current phase control (p-contacts) - are among the expected effects.
[9] S.Dadras, S.Dehghani, M.Davoudiniya, S.Falahati, Improving superconducting properties of YBCO high temperature superconductor by Graphene Oxide doping, Materials Chemistry and Physics. 193 (2017) 496-500
Palachev, The connection between the effects of conductivity and the superconductivity of YBCO with the features of the crystal structure, Bulletin of the Dagestan State University. 35(3) (2020) 96-102
Online since: March 2012
Authors: Arjaree Pradittham, Titima Sramanee, Sarinthip Thanakkasaranee, Supapen Trejitwattanaku, Chiravoot Pechyen, Duangduen Atong
Thus, FTIR spectra of the LLDPE, LLDPE/silica, LLDPE/silica/1%TEVS, LLDPE/silica/3%TEVS and LLDPE/silica/5%TEVS samples as representative examples to identify structures of the compatibilizers are given in Fig. 1 in the wavenumber range of 400–4000 cm-1.
The large side groups of triethoxyvinylsilane affect the structure of LLDPE crystal units, contributing to a lower oxygen barrier with the presence of triethoxyvinylsilane. [1] The decrease in WVP of polymer/silica composite films is mainly attributed to the tortuous path for water vapor diffusion due to the impermeable silica particles distributed in the polymer matrix with increasing the effective diffusion path length.
The large side groups of triethoxyvinylsilane affect the structure of LLDPE crystal units, contributing to a lower oxygen barrier with the presence of triethoxyvinylsilane. [4] (a) (b) Fig. 4 Barrier properties of LLDPE/modified silica nanoparticles : (a) OP and (b) WVP.
Brostow: CHEMISTRY & CHEMICAL TECHNOLOGY Vol. 2 (2008), p.27-32
Online since: September 2007
Authors: Zhi Yong He, Xiao Ping Liu, Chao Li Guo, Dong Dong Chen, Zhong Xu, Wen Huai Tian
Influence of Temperature on Characteristics of TiAl Plasma Surface Niobiumizing Xiaoping LIU 1, 2, a , Wenhuai TIAN 1, b , Chaoli GUO2, c , Dongdong CHEN 1, d, Zhiyong HE2, e and Zhong XU 2, f 1 Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China 2 Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, China a liuxiaoping@tyut.edu.cn Keywords: TiAl based alloy; Plasma alloying; Temperature; Sheath potential.
Since the stable structure of TiAl based alloys would inhibit the alloying process, a sputtering treatment of the sample is used to produce the defect lattices or structure on the surface prior to the niobium alloying process.
A niobium deficient layer (D) is contiguous to the matrix and few γ-α2 lamellar structure remains in the layer.
Online since: March 2007
Authors: Zhi Yong Jia, Yi Wen Tang, Zhi Gang Chen, Li Sha Zhang, Xin Zhang
To further investigate the structure of this sample, we have studied the cross section of such ZnO film obtained by SEM at two different magnifications as shown in Fig.2.
The low resolution image applied in Fig.2a confirms the presence of a three-layer structure, the lowest being the glass support followed by the fluorine-doped SnO2 layer and the 1.5-µm-thick ZnO film.
The pattern associated with ZnO film is quite similar to those of bulk ZnO and reveals a hexagonal wurtzite structure (a =0.3248 nm and c=0.5206 nm) in agreement with the data obtained from JCPD files No.79-0206.
Photobio A: Chemistry, 148(2002)57-64
Online since: February 2011
Authors: Nian Fen Wu, Song Jiang Ma, Fang Wen Li, Hai Wu Jia, Juan Yang, Jing Xiao, Mei Ling Fu
Preparation and Characterization of Organic Modified Sepiolite Sorbent by Microwave Radiation Songjiang Ma1,a, Nianfen Wu1,b, Fangwen Li1,c, Juan Yang1, Meiling Fu1, Haiwu Jia1 and Jing Xiao1 1School of Chemistry and chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, P.R.China a masongjiang@gmail.com, b fenfen_0405@126.com, c lifangweng1@126.com Keywords: Sepiolite, Microwave radiation, Organic modified, Characterization.
It was seen from Fig.3 that the FTIRs of crude sepiolite and modified sepiolite were almost the same, which indicated that the basic structure of sepiolite didn’t change after being modified.
The XRD of modified sepiolite didn’t have any new diffraction peaks, which indicated none change in crystalline basic structure between crude sepiolite and modified sepiolite.
That maybe because CTAB was adsorbed on the surface of sepiolite only by ion exchange, so the internal structure of sepiolite didn’t change at this temperature.