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Online since: November 2013
Authors: Jun Du, Qi Wu, Jiao Liu, Hua Qiang Fu, Bu Hui Li
TiSi2 has a face-centered orthorhombic structure and a resistivity as low as 16-20µΩ∙cm [6].
While bottom-up [15] means to self-assemble nano material and structure, which requires controlling the structure, composition, size, and position of atoms in the growth process of the material.
The biggest problem of the "top-down" method is the imperfection of the surface structure.
Concerning the different driving force (external or internal) involving the process of constructing the nanometer structure system, assembly nano structure system can be roughly divided into two types: (1) artificial nano structure assembly system, (2) nano structure self-assembly system [15].
Progress in Chemistry, 8 (1996) 231-239.
Online since: February 2012
Authors: Huai Xiang Li, Qing Qing Wei, Yan Yan Liu, Kang Wu
Cholesterol detection by self-assembled dodecyl thiol layers extracted cholesterol on the Ce-Sb codoped SnO2 film electrodes Huai-Xiang Li1,a,*, Qing-Qing Wei1,b, Yan-Yan Liu1,c, Kang Wu2,d 1College of Chemistry, Chemical Engineering and Materials Science, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P.R.
X-ray diffraction (XRD) and scanning electron microscopy (SEM) have been used to analyze the structure and morphology of the samples.
Its electrical properties depend critically on its stoichiometry, on the nature and amount of dopants and on its micro-structure[5].
Tin oxide has the tetragonal rutile structure [32] none the less for Ce-Sb codoping.
Online since: May 2021
Authors: Mansurjon Juraev, Xiao Ya Zhou, Xiao Tao Ma, Cheng Fang, Ye Qian Ge, Qiu Feng Ye, Feng Ye
Synthesis of Lanthanum Orotate and its Application as PVC Thermal Stabilizer Mansurjon Juraev1,a, Xiaoya Zhou1,b, Xiaotao Ma1,c, Cheng Fang1,d, Yeqian Ge1,e, Qiufeng Ye1,f,*, Feng Ye1,2,3,g,* 1College of Textile and Garment, Shaoxing University, Shaoxing, Zhejiang 312000, China 2Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing, Zhejiang 312000, China 3Department of Chemistry, Zhejiang University, Hangzhou 310058, China amansurjon_juraev93@mail.ru, bzhouxiaoya@nimte.ac.cn, cmaxiaotao@nimte.ac.cn, dfangcheng@nimte.ac.cn, egeyeqian@nimte.ac.cn, fyeqiufeng@nimte.ac.cn, gyefeng@nimte.ac.cn Keywords: Poly (vinyl chloride); Lanthanum; LaOr; Thermal stabilizer; synergetic effect.
The structure of basic lanthanum orotate (LaOr) were characterized by elemental analysis and infrared spectroscopy.
Structure characterization and performance testing.
This can be attributed to the HCl generated by PVC during decomposition was absorbed by the Or structure of LaOr and slowed down the chain decomposition.
Online since: March 2012
Authors: Yi Ping Zhu, Duo Ping Liang, Hai Yan Liu
This paper discusses the structure design, light conversion agents, vehicles, colorants and the selection of other functional additives of light conversion advanced invisible falsification- resistant ink, the preparation of the light conversion falsification-resistant ink and rare earth metal europium complex, and analyzes rare earth metal europium complex, Eu(C5H7O2)3C12H8N2, through infrared spectrometer, element analyzer and fluorescence spectrometer.
The bending vibration frequency of C-H atom in phenanthroline decreases from 855cm-1 and 740cm-1 to 851cm-1 and 728 cm-1 after the coordination, a small shift, which shows that the basic structure of phenanthroline does not change.
This paper discusses the structure design, light conversion agents, vehicles and the selection of other functional additives of ultraviolet-light-to-infrared-light advanced invisible falsification-resis- tant ink, introduces Eu(C5H7O2)3C12H8N2 and identifies the composition of rare earth complex through PE-240C element analyzer, LS-55 fluorescence spectrometer and infrared spectrometer.
Chemistry. 10 (2008) ,in Chinese
Online since: March 2019
Authors: Nor Asikin Rosli, Siti Fatma Abd Karim, Rabiatul Adawiyah Abdol Aziz
Hexagonal wurtzite structure of ZnO nanoparticles obtained from the XRD analysis with range of crystalline size between 16 to 23 nm and the smallest crystallite size was the smallest at pH 12.
These specific peaks belong to the hexagonal wurtzite structures of ZnO NPs [18, 32], which are also consistent with standard ICSD 31052 (PDF 01-075-1526).
ZnO NPs crystallite structure at pH 8 until pH 12 have equal hexagonal wurtzite structure.
XRD analysis of ZnO NPs were observed as the hexagonal wurtzite structures.
Venckatesh, “Biosynthesis and characterization of phyto mediated zinc oxide nanoparticles: A green chemistry approach,” Mater.
Online since: June 2015
Authors: Rusmidah Ali, Wan Azelee Wan Abu Bakar, Susilawati Toemen
Effect of Strontium on the Catalytic Activity and Physicochemical Properties of Ru/Mn Catalysts for CO2 Methanation Reaction Susilawati Toemena, Rusmidah Alib and Wan Azelee Wan Abu Bakarc Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia aemail: susilawatitoe@yahoo.com, bemail: rusmidah@kimia.fs.utm.my*, cemail: wazelee@kimia.fs.utm.my Keywords: methanation, carbon dioxide, strontia, flue gases, coal burning power plant Abstract.
The Sr addition did not modify the crystalline structure of the catalyst but gave higher surface area, smaller particle size and high metal dispersion as well as increased the degree of reduction and CO chemisorption.
The structure of the catalyst was characterized by X-ray diffraction (XRD) using Cu Kα radiation (λ=1.54060 Å) and the data was collected from 2θ of 20o to 80o.
It can be seen that the addition of strontia caused the phase structure of the Ru/Mn-65/Al2O3 catalyst transformed from crystalline state to amorphous state.
Fig. 6 Catalytic performance of CO2 conversion from methanation reaction over Ru/Mn/Sr/Al2O3 catalyst calcined at 1000oC for 5 hours with various strontia loading Conclusion The modification of the Ru/Mn-65/Al2O3 catalyst by adding the strontia as a based could change the structure of the catalyst.
Online since: April 2011
Authors: Y. Fukuda, K.Z. Liu, Masaru Shimomura
Surface electronic structures of n-GaP(001) and p-InP(001) with and without sulfur treatment have been studied by X-ray photoelectron spectroscopy (XPS), synchrotron radiation photoemission spectroscopy (SRPES), and inverse photoemission spectroscopy (IPES).
Introduction III-V compound semiconductor surfaces are reconstructed into various structures depending upon surface compositions of III and V group atoms [1].
Since it was found that passivation of III-V semiconductor surfaces with sulfur tremendously improved surface electronic properties [2], surface chemistry, surface electronic states, and surface structures of sulfur-treated III-V semiconductors have been widely studied.
Cleanness and structures of the sample surfaces were monitored by Auger electron spectroscopy (AES) and low-energy electron diffraction (LEED), respectively.
Online since: June 2021
Authors: Suntree Sangjan, Wadchara Thongsamer
The chemical structure of hydrogel composite beads were characterized via Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD).
Talc has layer structure consisting of a magnesium hydroxide layer sandwiched between two silica layers which surfaces of the layers contain oxygen atoms, giving rise to hydrophobic characteristics believed to be the reason for its slow water-insoluble behavior.
The structure of SA and ST materials were characterized by FT-IR and XRD.
Results and Discussions Structure characteristics of fertilizer hydrogel beads.
Philip Robertsonz: Climate Change and Agriculture Fact Sheet Series—MSU Extension Bulletin Vol. 3152 (2014), p. 1 [2] Josemar Gonçalves de Oliveira Filho, Juliana Moraes Rodrigues, Anna Carolina Fernandes Valadares, Adrielle Borges de Almeida, Thayanara Mayara de Lima, Katiuchia Pereira Takeuchi, Cássia Cristina Fernandes Alves, Heloisa Alves de Figueiredo Sousa, Edilsa Rosa da Silva, Fábio Henrique Dyszy, Mariana Buranelo Egea: Food Hydrocolloids Vol. 92 (2019), p. 267 [3] Jing Wang, Qingfeng Yang, Liang Zhang, Manshun Liu, Na Hu, Wentao Zhang, Wenxin Zhu, Rong Wang, Yourui Suo, Jianlong Wang: Food Chemistry Vol. 257 (2018), p. 155 [4] Abdelkrim Soumia, Mokhtar Adel, Sardi Amina, Boukoussa Bouhadjar, Djelad Amal, Zaoui Farouk, Bengueddach Abdelkader and Sassi Mohamed: International Journal of Biological Macromolecules Vol. 145 (2020), p. 466 [5] A.
Online since: October 2018
Authors: Yong Tao Zhang, Xiao Li Hu
The crystal structure of LiCoO2 is α-NaFeO2, which is a distorted rock-salt structure where the cations order in alternating (111) plane [10].
LiNiO2 is known as a high capacity cathode material (>200mAhg-1) and also forms the α-NaFeO2 structure [13].
Yao, Changes in electronic structure by Li ion deintercalation in LiNiO2 from nickel L-edge and O K-edge XANES, J.
Goodenough, Effect of Structure on the Fe3+/Fe2+ Redox Couple in Iron Phosphates, J.
Yu, The defect chemistry of LiFePO4 prepared by hydrothermal method at different pH values, J.
Online since: October 2014
Authors: Yurii F. Ivanov, N.S. Belousova, I.M. Goncharenko, Zhanna G. Kovalevskaya, Vasilii A. Klimenov
This low-carbon chromium annealed steel was annealed to obtain soft and plastic structure.
This results in a formation of the subgrain structure having perfect boundaries.
The structure and the phase composition of the nitride layer are set by the nitriding temperature and the original structure of the surface layer.
After nitriding of steel having the equilibrium original structure, nitrogen diffusion basically occurs by the grain volume.
Physics and Chemistry of Materials Treatment, 3 (2001) 16-19