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Online since: December 2012
Authors: Ajay Bansal, Jatinder Kumar
The produced hydroxyl radical, which is known as a very strong oxidant agent, attack the structure of a dye and the reaction lead to total mineralization in the form of CO2 and H2O.
Characterization of prepared films Scanning electron microscopy (SEM) is a valuable tool for probing the structure and morphology of material at the nanometer to micron length scale.
Subrahmanyam, Photocatalytic degradation of H-acid over a novel TiO2 thin film fixed bed reactor and in aqueous suspensions, Journal of Photochemistry and Photobiology A: Chemistry, 2003,156,179-187
Jasra, Photocatalytic degradation of aqueous nitrobenzene by nanocrystalline, Industrial and Engineering Chemistry Reaserch, 2006, 45: 922–927
Characterization of prepared films Scanning electron microscopy (SEM) is a valuable tool for probing the structure and morphology of material at the nanometer to micron length scale.
Subrahmanyam, Photocatalytic degradation of H-acid over a novel TiO2 thin film fixed bed reactor and in aqueous suspensions, Journal of Photochemistry and Photobiology A: Chemistry, 2003,156,179-187
Jasra, Photocatalytic degradation of aqueous nitrobenzene by nanocrystalline, Industrial and Engineering Chemistry Reaserch, 2006, 45: 922–927
Online since: October 2014
Authors: Sen Han, Rao Rao Han, Chen Hao Guo
Recently, surface chemistry has a wide range of applications to explain the function between liquid and solid, such as polymer-film and glass (Lamprou et al. 2010; Qian et al. 2008), polymer and metal (Li et al. 2008; Terpilowski and Chibowski 2010; Fu et al. 2010).
Modeling of corrosion protection for reinforced concrete structures with surface coatings, Journal of Civil Engineering and Management, 14(4), p. 241
Electrical energy storage in ferroelectric polymer nanocomposites containing surface-functionalized BaTiO3 nanoparticles, Chemistry of Materials ,20, p. 6304
Probabilistic analysis of air void structure and its relationship to permeability and moisture damage of hot mix asphalt.
Modeling of corrosion protection for reinforced concrete structures with surface coatings, Journal of Civil Engineering and Management, 14(4), p. 241
Electrical energy storage in ferroelectric polymer nanocomposites containing surface-functionalized BaTiO3 nanoparticles, Chemistry of Materials ,20, p. 6304
Probabilistic analysis of air void structure and its relationship to permeability and moisture damage of hot mix asphalt.
Online since: March 2015
Authors: Li Xin Xu, Chuan Feng Sun, Jie Li, Guang Yuan Chen
Gold catalysts on TiO2-modified silica gel for the selective cyclopentane oxidation to cyclopentanone
Lixin Xu1, a, Chuanfeng Sun1, b, Jie Li1, c, Guangyuan Chen1,d
1School of Chemistry & Chemical Engineering, Anhui University of Technology, Ma'anshan 243002, PR China
aLxxu@ahut.edu.cn, bscf-wj@163.com, ccnen1204008238@sina.com.cn, d171985724@qq.com
Keywords: gold catalyst; cyclopentane oxidation; cyclopentanone; silica gel
Abstract.
Cycloalkanes oxidation to the corresponding ketones and alcohols has been one of the main topics in chemistry and the chemical industry as well[7,8].
The X-ray diffraction (XRD, Bruker D8 Advance, Germany) with Cu-Kα radiation was taken to measure the crystalline structure of the TiO2-modified silica gel and the catalysts.
The special channel structure of silica gel and titania of coating or island types on the surface isolate gold particles from one another, resulting in suppression of gold agglomeration for the catalyst.
Cycloalkanes oxidation to the corresponding ketones and alcohols has been one of the main topics in chemistry and the chemical industry as well[7,8].
The X-ray diffraction (XRD, Bruker D8 Advance, Germany) with Cu-Kα radiation was taken to measure the crystalline structure of the TiO2-modified silica gel and the catalysts.
The special channel structure of silica gel and titania of coating or island types on the surface isolate gold particles from one another, resulting in suppression of gold agglomeration for the catalyst.
Online since: December 2013
Authors: Xin Yuan Liang
Fourthly, design and development of the structure, function, software and hardware and the correlation testing for on-line oil monitoring system should be completed.
The research first starts from analysis of main physics and chemistry performance parameter influencing the lubrication reliability of mechanical device, then carries on the analysis of the oil quality, the multi-elements wears, contamination detection as well as the use environment aspect.
The traditional off-line detection method can not be used for the on-line detection; therefore it is necessary to construct method and strategy suitable for rapid on-line detection according to these main physics and chemistry performance parameter of oil system.
Through extracting the characteristic parameters of particles of image, such as geometric parameters, shape parameters, structure, characteristic parameters, image processing and analyzing system mainly disposes particle identification classification and mechanical wear condition judgment.
The research first starts from analysis of main physics and chemistry performance parameter influencing the lubrication reliability of mechanical device, then carries on the analysis of the oil quality, the multi-elements wears, contamination detection as well as the use environment aspect.
The traditional off-line detection method can not be used for the on-line detection; therefore it is necessary to construct method and strategy suitable for rapid on-line detection according to these main physics and chemistry performance parameter of oil system.
Through extracting the characteristic parameters of particles of image, such as geometric parameters, shape parameters, structure, characteristic parameters, image processing and analyzing system mainly disposes particle identification classification and mechanical wear condition judgment.
Preparation for Graphene Coated Polyvinyl Alcohol Based Conductive Fiber Containing Silver Nanowires
Online since: June 2019
Authors: Li Xing Dai, Jun Sun, Xi Ke Xiong, Chao Xiao
Preparation for Graphene Coated Polyvinyl Alcohol Based Conductive Fiber Containing Silver Nanowires
Chao Xiao1,a, Xi-Ke Xiong1,b, Jun Sun1,c, Li-Xing Dai1,d
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
acxiao@ stu.suda.edu.cn, bxkxiong@stu.suda.edu.cn, csunjun@suda.edu.cn, ddailixing@suda.edu.cn
Keywords: Polyvinyl alcohol, Coating, Graphene, Conductivity
Abstract.
The intensity ratio of the D band to G band (ID/IG) is generally considered as an indicator of the relative disorder structures.
In this study, the ID/IG ratio of GO decreased from 1.21 (GO/PVA-AgNWs fiber) to 0.96 (rGO/PVA-AgNWs fiber) after chemical reduction for 1 h at 70 °C, implying an increase in sp2 crystallinity, indicating the increase of the integrity of GO structure, that is, rGO was formed by the chemical reduction of GO in the fibers.
Journal of Materials Chemistry C, Vol. 5 (2017) No.32
The intensity ratio of the D band to G band (ID/IG) is generally considered as an indicator of the relative disorder structures.
In this study, the ID/IG ratio of GO decreased from 1.21 (GO/PVA-AgNWs fiber) to 0.96 (rGO/PVA-AgNWs fiber) after chemical reduction for 1 h at 70 °C, implying an increase in sp2 crystallinity, indicating the increase of the integrity of GO structure, that is, rGO was formed by the chemical reduction of GO in the fibers.
Journal of Materials Chemistry C, Vol. 5 (2017) No.32
Online since: March 2016
Authors: Xiao Yang Guo, Ming Li, Fei Meng
SEM image of GO
Table 1 Chemical constituent of the oil well cement
Constituent
MgO
SO3
Insolubles
R2O
C3S
C3A
2 C3A+ C4AF
Loss
cement (%Wt)
1.42
2.52
0.55
0.43
57.33
2.34
18.21
1.03
The FTIR analysis indicated that the absorption peak of stretching vibration and bending vibration of OH in water molecules appeared at 3431 cm-1, 1640 cm-1 respectively, while the absorption bands at 3149cm-1 and 1400 cm-1 were the stretching vibration and bending vibration of OH in graphite oxide structure, the C-O-C stretching vibration absorption peak appeared at 1134 cm-1[7-9], and the GO was not completely oxidized [10-11].
The SEM images of GO displays a layer structure and a weak aggregation state.
[17] N KOVTYUKHOVA, P OLLIVIER, B R MARTIN, Layer-by-layer assembly of ultrathin composite films from micro-sized graphite oxide sheets and polycations, Chemistry of Materials. 11(1999) 771-778
Lopez-Manchado, Use of graphite oxide and/or thermally reduced graphite oxide for the removal of dyes from water, Journal of Photochemistry and Photobiology A: Chemistry. 312(2015) 88-95
The SEM images of GO displays a layer structure and a weak aggregation state.
[17] N KOVTYUKHOVA, P OLLIVIER, B R MARTIN, Layer-by-layer assembly of ultrathin composite films from micro-sized graphite oxide sheets and polycations, Chemistry of Materials. 11(1999) 771-778
Lopez-Manchado, Use of graphite oxide and/or thermally reduced graphite oxide for the removal of dyes from water, Journal of Photochemistry and Photobiology A: Chemistry. 312(2015) 88-95
Online since: July 2020
Authors: Riana Herlina Lumingkewas, Shirley Savetlana, Mochamad Chalid, Aniek Sri Handayani, Marcelinus Christwardana
Microfibril cellulose generally has a fibrous cellulose structure as thick as 2-10 nm with a length of several tens of microns, varying depending on the origin [5].
Krässig, Cellulose-structure.
Procedia Chemistry, 16 (2015) 608-615
Journal of Materials Physics and Chemistry, 2 (2014) 1-8
Krässig, Cellulose-structure.
Procedia Chemistry, 16 (2015) 608-615
Journal of Materials Physics and Chemistry, 2 (2014) 1-8
Online since: August 2008
Authors: Lingamallu Giribabu, C. Vijay Kumar, M. Raghavender, K. Somaiah, P. Venkateswara Rao, P. Yella Reddy
Venkateswara Rao2a
1
Nanomaterials Laboratory, Inorganic & Physical Chemistry Division, Indian Institute of Chemical
Technology, Habsiguda, Hyderabad 500007, India.
2
Department of Chemistry, Nizam College (Osmania University), Hyderabad 500001, India
a
giribabu@iict.res.in
received paper 1.11.2007, received revised paper 15.12.2007, accepted date, 16.12.2008
Keywords: Unsymmetrical Zinc Phthalocyanine; Transmission Electron Microscopy; Nanocrystalline TiO2;
Solar Cells; Non-volatile Redox Electrolyte.
To overcome these problems, recently, we have reported two unsymmetrical zinc phthalocyanines PCH001 and PCH003 (structures are shown in Fig. 1) based on 'push-pull' concept [4].
Structure of unsymmetrical zinc phthalocyanines.
To overcome these problems, recently, we have reported two unsymmetrical zinc phthalocyanines PCH001 and PCH003 (structures are shown in Fig. 1) based on 'push-pull' concept [4].
Structure of unsymmetrical zinc phthalocyanines.
Online since: January 2010
Authors: Yasuhiro Hoshiyama, Hidekazu Miyake, Kentaro Hirano
Production of Rapidly Solidified Composite Deposits Based on Iron with
Vanadium Carbide Particles by Plasma Spraying
Yasuhiro HOSHIYAMA1,a, Kentaro HIRANO2,b and Hidekazu MIYAKE1,c
1
Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and
Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka, 564-8680, JAPAN
2
Asahi-seiren Co.
The as-sprayed deposit formed on the water-cooled substrate has a lamellar structure due to the successive impingement and spreading of the sprayed droplets.
The difference in constituents, structures and hardness of the composite deposits results from the different compositions of the composite deposits.
The as-sprayed deposit formed on the water-cooled substrate has a lamellar structure due to the successive impingement and spreading of the sprayed droplets.
The difference in constituents, structures and hardness of the composite deposits results from the different compositions of the composite deposits.
Selenium Nanocluster Coatings: Transforming Current Orthopedic Materials into Inhibiting Bone Cancer
Online since: January 2010
Authors: Thomas J. Webster, Phong A. Tran, Love Sarin, Robert H. Hurt
The objective of the present in vitro study was to create an orthopedic implant with an anticancer
chemistry to simultaneously: (i) promote normal bone cell functions and (ii) inhibit
cancerous bone cell functions.
To promote normal osteoblast functions, nano-structured surfaces were employed since numerous studies have shown increased osteoblast functions (including adhesion, proliferation, differentiation, protein synthesis and calcium-containing mineral deposition) on nanorough surfaces compared to micro-rough, nano-smooth surfaces [7-10].
It was also shown that initial protein interactions from serum on nano-structured ceramics [7,8] and nano-phase metals [9] was optimal, leading to greater osteoblast functions.
It has also been demonstrated that increased osteoblast functions on nano-phase compared to micron, conventional ceramics is independent of surface chemistry and material crystalline phase [10].
To promote normal osteoblast functions, nano-structured surfaces were employed since numerous studies have shown increased osteoblast functions (including adhesion, proliferation, differentiation, protein synthesis and calcium-containing mineral deposition) on nanorough surfaces compared to micro-rough, nano-smooth surfaces [7-10].
It was also shown that initial protein interactions from serum on nano-structured ceramics [7,8] and nano-phase metals [9] was optimal, leading to greater osteoblast functions.
It has also been demonstrated that increased osteoblast functions on nano-phase compared to micron, conventional ceramics is independent of surface chemistry and material crystalline phase [10].