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Online since: February 2012
Authors: Ying Tang, Qiang Deng, Jing Fang Xu, Xue Fan Gu
When dissolved in brine, a small group of surfactants is able to form micellar structures other than the most commonly encountered spheres or disks.
This network of micellar structure resists distortion, whereby the viscosity increases and imparts viscoelastic properties to the fluid.
Gong, New Journal of Chemistry, 34, 325(2010)
Fages, Topics in Current Chemistry, 256, 39(2005)
Bruce, New Journal of Chemistry, 41, 275(1999)
Online since: June 2014
Authors: Shuang Cheng Bao, Xiao Li Wang, Mei Lin Jia
In this paper the catalytic performance of Au-Pd/C for the oxidation of glyoxal to glyoxylic acid has been investigated and the structure of the bimetallic catalyst was characterized by XRD, XPS.
This means that the electronic structure of gold was changed because of introduction of Pd[12] and synergistic effect between these two metal elements.
Physical Chemistry Chemical Physics, 5:1917-1923 (2003)
Chemistry of Materials, 18(11): 2689- 2695 (2006)
Chinese Journal of Analytical Chemistry, (25):1086-1089(1995).
Online since: January 2016
Authors: Wicharn Techitdheera, Wisanu Pecharapa, Nalita Sawangjit
The methods to synthesize SnO2/CNT nanocomposites have been prepared by many techniques namely; wet chemistry [3], microwave technique [4] and sol–gel [5].
The sizes, shape and structure of the particles were observed by SEM (EVO MA10) operated at 5 kV.
It is evident that the diffractions matched perfectly with the SnO tetragonal Romarchite structure.
Butt, Wet chemistry synthesis of SnO2/MWCNTs nanocomposites and their tuning energy bandgap properties, Materials Letters119 (2014) 111–114
Devi, Enhanced performance of CNT/SnO2 thick film gas sensors towards hydrogen, Materials Chemistry and Physics. 147 (2014) 79-85.
Online since: April 2014
Authors: Huai Yu Shao, Xing Guo Li
The Mg is with hexagonal structure (space group: P63/mmc).
The Ni, Co and Cu are with face centered cubic structure (space group: Fm3m).
The Fe is with body centered cubic structure (space group: Im3m).
Wiswall, Inorganic Chemistry, 6 (1967) 2220-2223
Wiswall, Inorganic Chemistry, 7 (1968) 2254-2256
Online since: January 2013
Authors: Gui Hua Peng, Yu Zhi Feng, Zhen Hua Liang, Xia Wang, Xiao Bao Han
A possible reason for the shift may be the shrink of the SrS crystal lattice, which is ascribed to the substitution of Ca2+ ions for Sr2+ ions sites in SrS structure.
So the initial brightness and decay times are determined by the nature of the Eu2+ surroundings and the depth of Dy3+ traps, which relate to the host crystal structures.
From the XRD analytical we know that the transformation of the host crystal structures results from different x.
The reason may be due to the crystal structure of the phosphor is most favorable for the luminescence of Eu2+, and make Dy3+ form trap levels at suitable depth in relation to the thermal release rate at room temperature.
References [1] J.S.Shin, H.J.Kim, Y.K.Jeong, K.B.Kim and J.G.Kang: Materials Chemistry and Physics.
Online since: January 2013
Authors: Lai Guo Wang, Wei Huang, Jun Wei Wang
As already pointed out, the obtained information refers only to a part of the cement paste structure, due to the limited spatial resolution of SANS (the resolution can differ between different instruments).
It must be emphasized that there is not any method that exists which is able to deliver a complete picture of the total structure.
SANS measures nanometer-sized structures.
It was demonstrated that water or an aqueous solution(pore solution)located in pores with diameters smaller than about 6 nm is structured.
In Cement Chemistry Gothenburg 1997 (Sweden), 2, 24 p.
Online since: January 2010
Authors: Sukon Phanichphant, Pusit Pookmanee, Hathaithip Ninsonti, Supaporn Sangsrichan, Wiyong Kangwansupamonkon
Photocatalytic Degradation of Geosmin by Titanium Dioxide Powder Synthesized by the Hydrothermal Route Pusit Pookmanee1,a , Hathaithip Ninsonti1,b, Supaporn Sangsrichan1,c, Wiyong Kangwansupamomkon2,d and Sukon Phanichphant3,e 1 Department of Chemistry, Faculty of Science, Maejo University, Chiang Mai, Thailand 2 National Nanotechnology Center, National Science and Technology Development Agency, Pathumthani, Thailand 3 Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand a pusit@mju.ac.th, bicyhathaithip@yahoo.com, ciamsupaporn-s@mju.ac.th dwiyong@nanotec.or.th, e sphanichphant@yahoo.com Keywords: Titanium dioxide, hydrothermal method, geosmin Abstract.
Confirmation structure of TiO2 powder was obtained by comparison with the Joint Committee on Powder Diffraction Standards (JCPDS) Card File No.21-1272 [8] and 21-1276 [9].
At 80 °C for 3h, Fig.1 (a), multiphase of anatase and rutile structure of TiO2 powder were obtained by comparison with the Joint Committee on Powder Diffraction Standards (JCPDS) Card File No.21-1272 [8] and No.21-1276 [9].
At 100 °C for 3h, Fig.1 (b), single phase of anatase structure of TiO2 powder was obtained by comparison with the Joint Committee on Powder Diffraction Standards (JCPDS) Card File No.21-1272 [8].
Rutile and anatase structure were obtained after hydrothermal reaction at 80 o C for 3h without calcination step.
Online since: July 2022
Authors: Larbi El Farh, Allal Challioui, Siham Malki, Ibtissam Guesmi, Zakariae Darhi
Journal of Physics and Chemistry of Solids, 160 (2022) 110303
Chemistry of Materials, 28 (2016) 2912-2920
Chemistry of Materials. 23(2011) 3907-3914
Physical Chemistry Chemical Physics. 21 (2019) 23056-23064
Journal of Materials Chemistry A. 1(2013) 1407-1414
Online since: May 2012
Authors: Quan Gui Guo, Jin Cai Zhang, Jing Li Shi, Xue Min Guo, Lang Liu
Microstructure and reaction mechanism during fluorination of isotropic pitch Jincai Zhang1, a*, Jingli Shi2,b*, Xuemin Guo3,c, Quangui Guo4,d and Lang Liu5,e 1 Key Labotatory of Carbon Materials, Institue of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China Graduate University of the Chinese Academy of Sciences, Beijing 100039, China 2 Key Labotatory of Carbon Materials, Institue of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China 3Shanghai Institution of Organic Chemistry, Chinese Academy of Science, 345 lingling Lu, Shanghai 200062, PR China 4,5 Key Labotatory of Carbon Materials, Institue of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China azhjc705@sxicc.ac.cn, bShijingli1963@163.com, cGuoxm@mail.sioc.ac.cn, dqgguo@sxicc.ac.cn, eliulang@public.ty.sx.cn Keywords: isotropic pitch; fluoride; reaction mechanism; surface energy Abstract.
Moreover, the molecular structure of the pitch fluorides is in disorderly array at this time because of the complicated molecular structure that processes various fluorination degrees, this indicated by the change in the interlayer spacing of IPFs.
Isotropic pitch has no regular structure; it is a composite consisting of various molecules which cause cracks on the surface of the bulk isotropic pitch.
These differences result from the discrepancies in the molecular constituent and structure of their raw pitch [16].
Acknowledgement This study is supported by the whole staff in Guo’s group in Shanghai Institution of Organic Chemistry, Chinese Academy of Science.
Online since: February 2019
Authors: Valentina Anatolyevna Poluektova, N.A. Shapovalov
Directional modification, and consequently, regulation of aggregate stability and dispersion rheology belong to cross-disciplinary tasks of colloidal chemistry [9-12].
Thus, phloroglucinefurfural modificator damages the structure of the studied water mineral suspensions and increases their aggregate stability with smaller concentrations than resorcinfurfural modificator.
Shapovalov, Fundamental patterns of influence of the structure and composition of theoxyphenol oligomers on the plastification of cement mixtures, International Journal of Pharmacy & Technology. 8 (4) (2016) 22716-22725
Grodsky, Laboratory Research and Tasks on Colloidal Chemistry, M.: Chemistry, 1986
Efremov, Dilatancy of Colloidal Structures and Polymer Solutions, Achievements of Chemistry. 51(2) (1982) 285-310