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Online since: July 2011
Authors: Byung Ha Lee, Kyong Sop Han, In Don Joo
The results of SEM analysis showed the Perovskite structure and the particle size was approximately 2µm.
As a product obtained through chemical and physical techniques, such as mixing, firing and grinding, to promote the stability by using the color of ion, pigments are used as chromophore by being blended with bodies and glazes. [1] The color of pigments used for ceramic bodies or glazes is developed by the dispersion of crystal phases created the crystal phases require structural and chemical durability enough to endure dissolution during the process of firing. [2] At present, brown-series inorganic pigments are produced mainly with the spinel structure of Zn(Cr,Fe)2O4 or the hematite structure of α-Fe2O3, and they function to expand the color tone of brown or purplish brown wider.
This study intends to develop brown inorganic pigments with the Cr doped perovskite structure.
“Low-toxicity Red Ceramic Pigments for Porcelainised Stoneware from Lanthanide-Cerianite Solid Solutions”, Green Chemistry 3,238-42 (2001)
As a product obtained through chemical and physical techniques, such as mixing, firing and grinding, to promote the stability by using the color of ion, pigments are used as chromophore by being blended with bodies and glazes. [1] The color of pigments used for ceramic bodies or glazes is developed by the dispersion of crystal phases created the crystal phases require structural and chemical durability enough to endure dissolution during the process of firing. [2] At present, brown-series inorganic pigments are produced mainly with the spinel structure of Zn(Cr,Fe)2O4 or the hematite structure of α-Fe2O3, and they function to expand the color tone of brown or purplish brown wider.
This study intends to develop brown inorganic pigments with the Cr doped perovskite structure.
“Low-toxicity Red Ceramic Pigments for Porcelainised Stoneware from Lanthanide-Cerianite Solid Solutions”, Green Chemistry 3,238-42 (2001)
Online since: January 2005
Authors: Yin Qun Hua, Chang Sheng Li, Ke Hong Yan, Zhen Fan, Xiao Ping Shen, Kang Ming Chen, Ting Shun Jiang, Jian Ning Ding, Ji Chang Yang
Synthesis and Investigation of Micro-tribological
Behavior of WS2 Nanotube
Changsheng Li 1,a
, Kehong Yan
1,b
, Zhen Fan
1
, Xiaoping Shen
2, Kangming
Chen
2, Tingshun Jiang
3, Yinqun Hua
1, Jianning Ding
1
and Jichang Yang
1
1
Centre of micro/nano Science and Technology, Jiangsu University
Zhengjiang Jiangsu China, 212013
2
School of Chemistry and Chemical Engineering, Jiangsu University
Zhengjiang Jiangsu China, 212013
3
School of Material Science and Engineering, Jiangsu University
Zhengjiang Jiangsu China, 212013
a
email:lichangsheng@ujs,edu.cn; bemail:khyan@126.com
Keywords: WS2 nanotube, Atomic force microscopy, triobological
Abstract.
It may be the fullerence structure brings the chemical stability and leads to low friction.
It is well known that transitional metal dichalcogenides MS2 (M=Mo, W, S=S, Se) have lamellar structures, the bonds of adjacent lamella are weak van der Waals intreactions and the interlarmellar are strong covalent interactions.
The structure leads adjacent lamella easy to slip, so it shows very low friction coefficient.
The XRD analysis shows that the deposited products on the alumina template substrate are dominant WS2 nanotube with hexagonal structure in Fig. 2, and from a comparison of main peak intensities (the (002) peak to pure WS2) in chart, it is concluded that WS2 dominates and is companied by a small quantity of W and a trace of WOx (x=2.7-3).
It may be the fullerence structure brings the chemical stability and leads to low friction.
It is well known that transitional metal dichalcogenides MS2 (M=Mo, W, S=S, Se) have lamellar structures, the bonds of adjacent lamella are weak van der Waals intreactions and the interlarmellar are strong covalent interactions.
The structure leads adjacent lamella easy to slip, so it shows very low friction coefficient.
The XRD analysis shows that the deposited products on the alumina template substrate are dominant WS2 nanotube with hexagonal structure in Fig. 2, and from a comparison of main peak intensities (the (002) peak to pure WS2) in chart, it is concluded that WS2 dominates and is companied by a small quantity of W and a trace of WOx (x=2.7-3).
Online since: September 2024
Authors: Thirawudh Pongprayoon, Boriphat Methachan, Tanatcha Pukird
Therefore, admicellar polymerization (AP) technique was chosen to modify particle surface without changing the molecular structure.
Non-covalent surface modification method involves no interference or alteration of the original surface structure such as coating particles with surfactant to enhance dispersion ability.
Maria, Eds., Natural Rubber Materials, vol. 2. in Polymer Chemistry Series, vol. 2.
Cambridge: Royal Society of Chemistry, 2013. doi: 10.1039/9781849737654
Non-covalent surface modification method involves no interference or alteration of the original surface structure such as coating particles with surfactant to enhance dispersion ability.
Maria, Eds., Natural Rubber Materials, vol. 2. in Polymer Chemistry Series, vol. 2.
Cambridge: Royal Society of Chemistry, 2013. doi: 10.1039/9781849737654
Online since: December 2010
Authors: V.I. Nizhankovskii, V.G. Myagkov, L.E. Bykova, G.N. Bondarenko, S.V. Komogortsev, V.S. Zhigalov, G.I. Frolov
Nizhankovskii4
1 Kirensky Institute of Physics SB RAS, Krasnoyarsk, Russia
2 Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russia
3 Institute of Chemistry and Technology SB RAS, Krasnoyarsk, Russia
4 International Laboratory of High Magnetic Fields and Low Temperatures, Wroclaw, Poland
a zhigalov@iph.krasn.ru, b miagkov@iph.krasn.ru, c rauf@iph.krasn.ru
Keyword: thin films, solid-state reaction, Co-Sm alloys, magnetic anisotropy, hysteresis loops
Abstract.
Upon annealing at 500 °С, the structure of the material changes, which leads to the formation of an epitaxial Sm2Co17 (110) phase.
Experimental Initial Sm-Co(110) film structures were prepared by successive thermal deposition of Co and Sm layers onto a single-crystal MgO(001) substrate in a vacuum of 10-6 torr at a temperature of about 400 °С, which exceeds the initiation temperature of a Sm2Co7 phase (350 °С).
The structure of the samples consists of Co-Sm(110) crystallites with the c axes coinciding with the [100] and [010] directions of the MgO(001) substrate.
Upon annealing at 500 °С, the structure of the material changes, which leads to the formation of an epitaxial Sm2Co17 (110) phase.
Experimental Initial Sm-Co(110) film structures were prepared by successive thermal deposition of Co and Sm layers onto a single-crystal MgO(001) substrate in a vacuum of 10-6 torr at a temperature of about 400 °С, which exceeds the initiation temperature of a Sm2Co7 phase (350 °С).
The structure of the samples consists of Co-Sm(110) crystallites with the c axes coinciding with the [100] and [010] directions of the MgO(001) substrate.
Online since: August 2013
Authors: Hai Wang Wang, Guo Zhong Lu, Yu Yan Zhang, Yue Wen Du, Li Hui Song, Hang Yu Li, Xiu Yuan Lu, Gao Gao Dong
The analysis shows that the hybrid nanoparticles effectively improve the compressive strength, the compressive strength and cell structures.
A scanning electron microscopy (SEM; KYKY1010B, Shanghai Electron Optical Technology Institute, China) was used to observe the cell structures of phenolic foams.
The foam has a structure of pentagon or hexagon, which is very uniform and dense.
Benning: the physics and chemistry of product performance and process technology(Wiley-Interscience, New York 1969)
A scanning electron microscopy (SEM; KYKY1010B, Shanghai Electron Optical Technology Institute, China) was used to observe the cell structures of phenolic foams.
The foam has a structure of pentagon or hexagon, which is very uniform and dense.
Benning: the physics and chemistry of product performance and process technology(Wiley-Interscience, New York 1969)
Online since: October 2010
Authors: Sha Li, Lan Jin, Shu Sen Liu
Whereas, Ozone is a very strong oxidizing substance, which can destroy the biological structure of bacteria, viruses, and other microorganisms in a short time to cause to lose the ability to survive.
In the other side, the activated carbon is developed within the space structure and rich microporous organizations, which have strong adsorption, when the air force of toxic or harmful gases contact the carbon surfaces, the strong adsorption efficiencies are useful for pollutant removal..
[2] Y.Cheng.H.Q.Yin,: Chemistry&Industry of Forest Products 92-96 2004.24.2.
In the other side, the activated carbon is developed within the space structure and rich microporous organizations, which have strong adsorption, when the air force of toxic or harmful gases contact the carbon surfaces, the strong adsorption efficiencies are useful for pollutant removal..
[2] Y.Cheng.H.Q.Yin,: Chemistry&Industry of Forest Products 92-96 2004.24.2.
Online since: August 2013
Authors: Wei Shang, Yu Qing Wen, Hui Min Meng
Electrochemical Characteristics of the Self-Assembly Film on 6061 Aluminum Alloy
Yu-qing Wen 1,2,a, Hui-min Meng 1,b, Wei Shang 2,c
1 Corrosion and Protection Center; University of Science and Technology Beijing; Beijing 100083; China
2 College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004; China;
a wenyuqing16@163.com, b ecm@mater.ustb.edu.cn, c shangw13@163.com
Keywords: Aluminum alloy; the SAMs; Corrosion resistance; Electrochemical characteristics
Abstract.
In order to lay out the special structure characteristics of the SAMs and the bare Al alloy were investigated by SEM.
Fig. 1B shows the surface structure of the self-assembly film, which distribution was compact and uniform, no observed local signs of accumulation compared with the bare Al alloy (Fig.1A).
In order to lay out the special structure characteristics of the SAMs and the bare Al alloy were investigated by SEM.
Fig. 1B shows the surface structure of the self-assembly film, which distribution was compact and uniform, no observed local signs of accumulation compared with the bare Al alloy (Fig.1A).
Online since: January 2016
Authors: Natkamol Peungsamran, Sirilak Namwong
The Coated Paper with Silver Nanoparticles and Its Antibacterial Activity
Natkamol Peungsamran1, a* and Sirilak Namwong2
1 Department of Chemistry, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand
2 Department of Biotechology, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand
anatkamol.pe@ssru.ac.th, natkamol@yahoo.com, sirilak.an@ssru.ac.th
Keywords: Silver nanoparticles; coated paper; Ultrasonic; Antibacterial activity
Abstract
A simple method was achieved to develop a coating of silver nanoparticles on paper using ultrasonic radiation.
Silver particles lead to change the structure of bacterial cell membrane and generate nonfunctional proteins [2].
Because silver particles may damage the structure of bacterial cell membrane and also attach the protein binding site, which cause bacterial to die eventually.
Silver particles lead to change the structure of bacterial cell membrane and generate nonfunctional proteins [2].
Because silver particles may damage the structure of bacterial cell membrane and also attach the protein binding site, which cause bacterial to die eventually.
Online since: July 2012
Authors: Jun Zhang, Yang Zhu
Although the development in azo chemistry continues to make inroads into traditional anthraquinone areas, this process has now virtually reached equilibrium in dyes for textiles [1].
The Chemical structure of RB 198 is shown in Fig. 1.
Chemical structure of RB 198.
The Chemical structure of RB 198 is shown in Fig. 1.
Chemical structure of RB 198.
Online since: October 2014
Authors: Chao Rong Li, Yong Qiang Zhao, Xiao Bo Zhang, Yu Song Zhi
Results and Discussions
Structure and Morphology
Figure 2.
The images of Figure 2(a), (d) and (g) show high-quality CPCs, which possess a face-centered cubic (fcc) close-packed structure with the (111) plane paralleled to the substrate surface.
Chemistry of materials. 17 (2005) 3069-3071 [3] E.
The images of Figure 2(a), (d) and (g) show high-quality CPCs, which possess a face-centered cubic (fcc) close-packed structure with the (111) plane paralleled to the substrate surface.
Chemistry of materials. 17 (2005) 3069-3071 [3] E.