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Online since: February 2013
Authors: Ling Ling Shang, Yong Min Liu, Ce Shi, Yong Li Zhang
Research on Metal Ion Removal of Ceramic Printing Wastewater
SHANG Ling-ling1, SHI Ce1 , ZHANG Yong-li2, LIU Yong-min1*
1College of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, China;
2Departmenr of Chemistry, Hanshan Normal University, Chaozhou Guangdong, 521041, China
Keywords: Ceramic printing wastewater; Solution pH; Coagulant PAC; Flocculant PAM; Heavy metal scavenger; Removal of metal ions
Abstract: The removal of the metal ions in the ceramic printing wastewater was influenced by using, stirring and precipitating of the solution pH, coagulant PAC, coagulant aid PAM and heavy metal scavenger.
Research on Chaozhou ceramic industry space structure and its formation mechanism[J].
Inorganic chemistry journal. 2010, 26(3): 521-524
Research on Chaozhou ceramic industry space structure and its formation mechanism[J].
Inorganic chemistry journal. 2010, 26(3): 521-524
Online since: July 2015
Authors: Begoña Ferrari, Esther Molero, Františka Frajkorová
Electrophoretic deposition of gelatin/hydroxyapatite composite coatings onto a stainless steel substrate
FRAJKOROVÁ Františka 1,a *, MOLERO Esther 2,b and FERRARI Begoña 2,c
1 Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 612 00 Brno, Czech Republic
2 Instituto de Cerámica y Vidrio, CSIC, c/Kelsen 5, 28049 Madrid, Spain
a frajkorova@fch.vutbr.cz, b esther.molero@icv.csic.es, c bferrari@icv.csic.es
Keywords: Electrophoretic deposition, Hydroxyapatite, Gelatin, Biomedical coatings
Abstract.
When the gelatin plays the role of gelling agent, the success of the EPD method depends on its power to form a gel structure during withdrawal.
Bergström (Eds.), Surface and Colloidal Chemistry in Advanced Ceramics Processing, Marcel Dekker, New York, 1994.
When the gelatin plays the role of gelling agent, the success of the EPD method depends on its power to form a gel structure during withdrawal.
Bergström (Eds.), Surface and Colloidal Chemistry in Advanced Ceramics Processing, Marcel Dekker, New York, 1994.
Online since: May 2016
Authors: L. Zhao, Y. Zhang, K. Ma, G.Z. Mao
Mao2
1School of Chemical Engineering and Technology, Tianjin University, No.92 Weijin Road, Nankai District, Tianjin 300072, P.R.China
2School of Environment Science and Engineering, Tianjin University, No.92 Weijin Road, Nankai District, Tianjin 300072, P.R.China
3School of Chemistry and Chemical Engineering, Yulin University, No.4 Chongwen Road, Yulin City, Shanxi, 719000, P.
SEM micrographs of the native starch and the grafted sample are shown in Fig.3.The native starch granules are commonly spherical with a scabrous surface, but in the grafted sample the granular structure had disappeared.
Eliasson, Some physical and nutritional characteristics of genetically modified potatoes varying in amylose/amylopectin ratios, Food Chemistry. 100(2007)136-146
SEM micrographs of the native starch and the grafted sample are shown in Fig.3.The native starch granules are commonly spherical with a scabrous surface, but in the grafted sample the granular structure had disappeared.
Eliasson, Some physical and nutritional characteristics of genetically modified potatoes varying in amylose/amylopectin ratios, Food Chemistry. 100(2007)136-146
Online since: December 2011
Authors: Xiao Chun Huang, Zhan Jun Yang, Juan Li, Xiao Ya Hu, Yan Yan Ren
Sensitive Electrochemical Detection of 2,4-Dichlorophenol Using Novel Carbon Fiber Microelectrode
Zhanjun Yanga, Xiaochun Huangb, Juan Lic, Yanyan Rend and Xiaoya Hue*
College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China
azjyang@yzu.edu.cn; bhuangxiaochun@126.com; clijuan@yzu.edu.cn; drenyanyan100@126.com; exyhu@yzu.edu.cn
Keywords: 2,4-Dichlorophenol; Electrochemistry; Detection; Carbon fiber microelectrode
Abstract.
Surfactants, a kind of amphiphilic ions or molecules with a hydrophilic head on one side and a long hydrophobic tail on the other side, have been used in electroanalysis chemistry field [6,7].
Through adsorption at interfaces or aggregation into supramolecular structures, they can change the electrical properties of the electrode solution interface and the electrochemical process.
Surfactants, a kind of amphiphilic ions or molecules with a hydrophilic head on one side and a long hydrophobic tail on the other side, have been used in electroanalysis chemistry field [6,7].
Through adsorption at interfaces or aggregation into supramolecular structures, they can change the electrical properties of the electrode solution interface and the electrochemical process.
Online since: March 2013
Authors: Bin Xia, Fan Yu Kong, Cheng Zhang
Construction of ecologic road network structure.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Online since: October 2012
Authors: He Song, Xin Hua Deng, Qian Li
This article selected side amino ester-based non-isocyanate polyurethane pre-polymer with homemade efficient and environmentally-friendly as a curing agent, ester-based polyurethane prepolymer was formed mainly by the multi-functional cyclic carbonate and primary amine compounds, and carbamate group was created, the carbonyl in which could form intramolecular hydrogen bond with hydroxyl in the β-carbon atoms of carbamate group, thus this special structure in the material had better hydrolytic stability, low permeability and good chemical resistance [1,2].
Meanwhile the strong polarity of curing agent could improve the micro-phase separation structure of polyurethane [3].
However the polyurethane cured by isophorone diamine had relatively low modulus of elongation at 100% and fracture stress ,and good extension, but when importing a cyclic carbonate perssad in molecular structure, modulus and fracture stress had been greatly enhanced[6], the fracture strength reached 25.1MPa, which was due to the reaction of cyclic carbonate with isophorone diamine, hydrogen bonds had formed within the structure of the urethane groups, the intermolecular forces increased, thus the mechanical properties were improved.
Doklady Physical Chemistry, 289, 393(2003)
Meanwhile the strong polarity of curing agent could improve the micro-phase separation structure of polyurethane [3].
However the polyurethane cured by isophorone diamine had relatively low modulus of elongation at 100% and fracture stress ,and good extension, but when importing a cyclic carbonate perssad in molecular structure, modulus and fracture stress had been greatly enhanced[6], the fracture strength reached 25.1MPa, which was due to the reaction of cyclic carbonate with isophorone diamine, hydrogen bonds had formed within the structure of the urethane groups, the intermolecular forces increased, thus the mechanical properties were improved.
Doklady Physical Chemistry, 289, 393(2003)
Online since: September 2013
Authors: Liang Han, Jun Jing Wang
Structure diagram of vibratory feeder is shown in Fig. 1.
1
1
3 2
5
4
1 Trays; 2 Leaf spring; 3 Electromagnet; 4 The base; 5 The damping foot;
Fig. 1 Structure diagram of vibratory feeder
In the vibration measurement of vibration transmission system, two important problems are how to obtain feedback signals and how to ensure the quality of the feedback signal.
Due to the generation of acceleration, the differential capacitor in the internal of the structure loses balance, and produces an square-wave voltage as output and its amplitude is proportional to acceleration.
(a) (b) Fig. 2 ADXL105 pin structure Introduction to Keyence EX-V Series Digital Displacement Sensor Keyence EX-V series digital displacement sensor is a high-speed, high-precision, eddy current displacement sensor.
Chinese Journal of Structural Chemistry, 1996,2:295-303.
Due to the generation of acceleration, the differential capacitor in the internal of the structure loses balance, and produces an square-wave voltage as output and its amplitude is proportional to acceleration.
(a) (b) Fig. 2 ADXL105 pin structure Introduction to Keyence EX-V Series Digital Displacement Sensor Keyence EX-V series digital displacement sensor is a high-speed, high-precision, eddy current displacement sensor.
Chinese Journal of Structural Chemistry, 1996,2:295-303.
Online since: June 2011
Authors: Xue Jun Zhang, Yan Feng Yang, Hai Yan Li
Analysis of Porous Structure.
The specific surface area and pore structure of sample F, G and H were determined by nitrogen adsorption at 77K.
Results and discussion Pore Structure Analysis.
It is clearly seen that all of the three curves have an obvious hysteresis loop, that is, typical isotherm curve IV according to classification by International Union of Pure and Applied Chemistry (IUPAC), indicating occurrence of mesopores in these ACF samples.
The pore structure parameters of three samples are summarized in Table 2.
The specific surface area and pore structure of sample F, G and H were determined by nitrogen adsorption at 77K.
Results and discussion Pore Structure Analysis.
It is clearly seen that all of the three curves have an obvious hysteresis loop, that is, typical isotherm curve IV according to classification by International Union of Pure and Applied Chemistry (IUPAC), indicating occurrence of mesopores in these ACF samples.
The pore structure parameters of three samples are summarized in Table 2.
Online since: October 2014
Authors: Xiao Ying Yin, Xiao Dan Ren, Qing Shan Liu, Hui Feng
Tert-butylhydroperoxide (TBHP), methyl methacrylate (MMA), sodium hydroxide and acetic acid were obtained from Aladdin Chemistry Co., Ltd.
Results and Discussion Six-membered ring containing oxygen can be identified by analysis of Chemical structure of Chitosan (Fig. 1) and the characteristic peaks corresponding to chitosan backbone vibrations (Fig. 2).The main peaks are found at 471cm-1(bending vibration of C-C-O bonds) and 895cm-1, 1146cm-1(stretching vibration of C-C-O bonds)[7-9].While the Raman spectra of MMA consist of a series of carbon double bond and an ester group in the chemical structure of MMA(Fig. 1).
The Raman fingerprint can be a good show of functional groups of chitosan in the characteristic peaks, so in the analysis of compound structure Raman spectroscopy is a very reliable evidence.
a b Fig.1 Chemical structure of Chitosan(a) and MMA(b) Fig.2 Raman Spectrum of Chitosan Distribution of MMA in grafting to chitosan was analyzed by using Raman spectra.
Results and Discussion Six-membered ring containing oxygen can be identified by analysis of Chemical structure of Chitosan (Fig. 1) and the characteristic peaks corresponding to chitosan backbone vibrations (Fig. 2).The main peaks are found at 471cm-1(bending vibration of C-C-O bonds) and 895cm-1, 1146cm-1(stretching vibration of C-C-O bonds)[7-9].While the Raman spectra of MMA consist of a series of carbon double bond and an ester group in the chemical structure of MMA(Fig. 1).
The Raman fingerprint can be a good show of functional groups of chitosan in the characteristic peaks, so in the analysis of compound structure Raman spectroscopy is a very reliable evidence.
a b Fig.1 Chemical structure of Chitosan(a) and MMA(b) Fig.2 Raman Spectrum of Chitosan Distribution of MMA in grafting to chitosan was analyzed by using Raman spectra.
Online since: November 2011
Authors: Yuan Gao, Hui Tao Liu, Li Hua Tian, Xia Liu
Preparation and photocatalytic property of TiO2/C
Lihua Tian, Xia Liu, Huitao Liu*a, Yuan Gao*b
College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, PR China
a liuht-ytu@163.com, b gaoyyt@163.com
Keywords: Carbon microsphere (CMS), TiO2, Photocatalysis
Abstract.
Adjustment of the structure of diverse nano-materials to get special form for utility has been the subject of numerous studies in recent years[2-4].
Different parameters such as diameter, structure, crystallinity and chemical composition correspond to different property of microsphere .
The crystalline structure of TiO2 and TiO2/C samples was measured by an X-ray diffractometer(XRD, XRD-7000, Shimadazu) using graphite monochromatic copper radiation(Cu Ka) at 40 kV, 30 mA and λ = 1.5406 A° over the 2θ range of 10-80° with a scan rate of 2º min-1.
Selective adsorption is due to the pore structure and functional group on the surface of CMS.
Adjustment of the structure of diverse nano-materials to get special form for utility has been the subject of numerous studies in recent years[2-4].
Different parameters such as diameter, structure, crystallinity and chemical composition correspond to different property of microsphere .
The crystalline structure of TiO2 and TiO2/C samples was measured by an X-ray diffractometer(XRD, XRD-7000, Shimadazu) using graphite monochromatic copper radiation(Cu Ka) at 40 kV, 30 mA and λ = 1.5406 A° over the 2θ range of 10-80° with a scan rate of 2º min-1.
Selective adsorption is due to the pore structure and functional group on the surface of CMS.