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Online since: February 2019
Authors: Tatyana V. Mosunova, Artem V. Bogdanov, Viacheslav V. Avdin
Nanomaterials have great influence on the structure of catalysts, ceramics and other ware on their basis.
It seems likely that faster hydrolysis leads to greater diversity of structures.
This structure has also been confirmed by the results of scanning electron microscopy.
Smirnov, Structuring at the Nanoscale is the Way to the Design of New Solids and Materials, J. of General Chemistry, 4(72) (2002) 633-650
Chemistry, 82(2) (2009) 2098-2104
It seems likely that faster hydrolysis leads to greater diversity of structures.
This structure has also been confirmed by the results of scanning electron microscopy.
Smirnov, Structuring at the Nanoscale is the Way to the Design of New Solids and Materials, J. of General Chemistry, 4(72) (2002) 633-650
Chemistry, 82(2) (2009) 2098-2104
Online since: October 2006
Authors: Thomas Kronberg, Kaj Fröberg, Leena Hupa
Melting Behaviour and Surface Structure of Glazes
Containing Wollastonite and Dolomite
Thomas Kronberg
1, a
, Leena Hupa2,b and Kaj Fröberg
2,c
1
Ido Bathroom Ltd, Sanitec Group, 10600 Ekenäs, Finland
2
Process Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, 20500 Turku/Åbo, Finland
a
thomas.kronberg@idobathroom.com,
b
leena.hupa@abo.fi, ckaj.froberg@abo.fi
Keywords: glaze, wollastonite, diopside, melting behaviour, surface structure
Abstract.
The surface composition and structure of the glazes were studied by SEM/EDXA.
The results can be applied to tailor raw glaze compositions for a desired surface structure to be fired at a certain fusion temperature.
The surface structure of the glazed was studied by SEM/EDXA (LEO 1530 with a Vantage EDXA analyzer from Thermo Noram).
Acknowledgements This work is part of the activities of the Åbo Akademi Process Chemistry Centre funded by the Academy of Finland in their Centres of Excellence Programme.
The surface composition and structure of the glazes were studied by SEM/EDXA.
The results can be applied to tailor raw glaze compositions for a desired surface structure to be fired at a certain fusion temperature.
The surface structure of the glazed was studied by SEM/EDXA (LEO 1530 with a Vantage EDXA analyzer from Thermo Noram).
Acknowledgements This work is part of the activities of the Åbo Akademi Process Chemistry Centre funded by the Academy of Finland in their Centres of Excellence Programme.
Online since: June 2014
Authors: Kasinee Hemvichian, Sunan Tiptipakorn, Sarawut Rimdusit, Sarote Phromdee
Thermal Properties of Silicon-containing Polyimide Filled
with Carbon Black of Low Structure
Sunan Tiptipakorn1 a, Sarawut Rimdusit2 b, Sarote Phromdee2 c,
and Kasinee Hemvichian3 d
1Department of Chemistry, Faculty of Liberal Arts and Science, Kasetsart University, Kamphaeng Saen, Nakhon Pathom, 73140, Thailand.
2Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Pathumwon, Bangkok 10330, Thailand.
3Nuclear Research and Development Group,Thailand Institute of Nuclear Technology, 16 VibhavadiRangsit Road, Chatuchak, Bangkok 10900, Thailand.
The nano-composites between silicon-containing polyimide (SPI) and electrically conductive carbon black (CB) of low structure (Conductex K Ultra) were prepared.
The Tg and Td values of the composites filled with high structure were higher than those of the ones filled with low structure.
The chemical structure of BSF30 is illustrated in Figure 1.
Figure 1 Chemical structure of silicon containing polyimide Table 1 Specification of Conductex K Ultra Value DBP Volume OAN (mL/100g) 141 Particle Size (nm) 18 Specific Surface Area (m2/g) 190 Pour Bulk Density ASTM D1513 170 Results and Discussion Glass transition temperature (Tg) of the nano-composites between PSI and CB with various content of fillers are presented in Figure 2 and Table 2.
The nano-composites between silicon-containing polyimide (SPI) and electrically conductive carbon black (CB) of low structure (Conductex K Ultra) were prepared.
The Tg and Td values of the composites filled with high structure were higher than those of the ones filled with low structure.
The chemical structure of BSF30 is illustrated in Figure 1.
Figure 1 Chemical structure of silicon containing polyimide Table 1 Specification of Conductex K Ultra Value DBP Volume OAN (mL/100g) 141 Particle Size (nm) 18 Specific Surface Area (m2/g) 190 Pour Bulk Density ASTM D1513 170 Results and Discussion Glass transition temperature (Tg) of the nano-composites between PSI and CB with various content of fillers are presented in Figure 2 and Table 2.
Online since: January 2012
Authors: Kai Liang Qi, Guang Cheng Zhang
Research on Moulding Process and Dielectric Property of Polyimide Foam
Kailiang Qia, Guangcheng Zhangb
Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, Xi’an, 710129, P.R.
Fig.3 showed influences on cell structures foamed by different heating processes measured on SEM.
It can be seen that cellular structure prepared by microwave heating is more uniform.
Ding Polyimides: Chemistry, Relationship between Structure and Properties and Materials, Sciencep Press, (2006)
Xu, Preparation and dielectric properties of polyimide foams containing crosslinked structures, J.
Fig.3 showed influences on cell structures foamed by different heating processes measured on SEM.
It can be seen that cellular structure prepared by microwave heating is more uniform.
Ding Polyimides: Chemistry, Relationship between Structure and Properties and Materials, Sciencep Press, (2006)
Xu, Preparation and dielectric properties of polyimide foams containing crosslinked structures, J.
Online since: March 2018
Authors: Yoki Yulizar, Najmawati Sulaiman
XRD pattern of NiO NPs confirmed cubic crystal structure with space group Fm-3m.
Green chemistry approach is an effective and efficient approach that attracts many scientists due to it involves non-hazardous, environmentally friendly and affordable materials.
Raman spectrum of NiO NPs with 514 nm excitation lines Crystallographic Structure Studies.
XRD result of NiO exhibits cubic crystal structure with an average crystalline size of 7.08 nm.
Salavati-Niasari: Journal of Photochemistry and Photobiology A: Chemistry Vol. 337 (2017), p. 44-53 [2] K.
Green chemistry approach is an effective and efficient approach that attracts many scientists due to it involves non-hazardous, environmentally friendly and affordable materials.
Raman spectrum of NiO NPs with 514 nm excitation lines Crystallographic Structure Studies.
XRD result of NiO exhibits cubic crystal structure with an average crystalline size of 7.08 nm.
Salavati-Niasari: Journal of Photochemistry and Photobiology A: Chemistry Vol. 337 (2017), p. 44-53 [2] K.
Online since: October 2013
Authors: Xiao Pei Zhang, Shu Hong Chen, Jing Xu, Huang Zhao, Yun Fang Huang, Yue Lin Wei
Results and Discussions
Crystal Structure.Fig. 1 (a) shows the crystal structures for KLaNb2O7.
HLaNb2O7 with a layered perovskite-type structure was was shown in Fig. 1(b).
The layered structure of some Pt/HLaNb2O7 product had been destroyed by dye sensitized.
Onishi, Time-Resolved Infrared Spectroscopy of K3Ta3B2O12 Photocatalysts for Water Splitting, Journal of Physical Chemistry B 110 (2006) 7883–7886
Carter, Band Gap Engineering of MnO via ZnO Alloying: A Potential New Visible-Light Photocatalyst, Journal of Physical Chemistry C 116 (2012) 9876−9887
HLaNb2O7 with a layered perovskite-type structure was was shown in Fig. 1(b).
The layered structure of some Pt/HLaNb2O7 product had been destroyed by dye sensitized.
Onishi, Time-Resolved Infrared Spectroscopy of K3Ta3B2O12 Photocatalysts for Water Splitting, Journal of Physical Chemistry B 110 (2006) 7883–7886
Carter, Band Gap Engineering of MnO via ZnO Alloying: A Potential New Visible-Light Photocatalyst, Journal of Physical Chemistry C 116 (2012) 9876−9887
Online since: October 2015
Authors: Tamaz Kereselidze, Tamar Tchelidze
We investigated defect composition in ZnO quantum structures – quantum wells and nanowires doped with Ag impurity.
Donor and Acceptor Ionization Energies in Quantum structures.
Summary We studied defect structure in Ag doped ZnO quantum wells and nanowires.
Kröger, The Chemistry of Imperfect Crystals, North-HollandPublishing Company, Amsterdam, 1964
Gurvich, Introduction to Physical Chemistry of CrystalPhosphors , Vysshaya Shkola,Moscow, 1982 (inRussian)
Donor and Acceptor Ionization Energies in Quantum structures.
Summary We studied defect structure in Ag doped ZnO quantum wells and nanowires.
Kröger, The Chemistry of Imperfect Crystals, North-HollandPublishing Company, Amsterdam, 1964
Gurvich, Introduction to Physical Chemistry of CrystalPhosphors , Vysshaya Shkola,Moscow, 1982 (inRussian)
Online since: June 2011
Authors: Chun Xu Pan, Peng Fei Fang, Xiang Qi, Jian Xin Zhong, Guo Lin Hao, Jun Li, Long Ren
The surface chemistry of carbon nanotubes (CNTs) synthesized from ethanol flame was investigated using FTIR, TG, XPS and TEM.
Results and Discussions Fig. 1 shows the typical images of the CNTs, which exhibit a plenty of vigorously grown and randomly fibrillous structures.
XPS analysis was also employed to evaluate the surface chemistry of CNFs, with the results shown in Fig. 5.
Compared with the XPS patterns of both CNTs, it is found that the main structures are similar, as indicated in the sp2 carbon at 284.7 eV.
The unique chemical structure with abundant oxygenous functional groups of F-CNTs might be related to the flame synthesis process.
Results and Discussions Fig. 1 shows the typical images of the CNTs, which exhibit a plenty of vigorously grown and randomly fibrillous structures.
XPS analysis was also employed to evaluate the surface chemistry of CNFs, with the results shown in Fig. 5.
Compared with the XPS patterns of both CNTs, it is found that the main structures are similar, as indicated in the sp2 carbon at 284.7 eV.
The unique chemical structure with abundant oxygenous functional groups of F-CNTs might be related to the flame synthesis process.
Online since: December 2025
Authors: Amol Sahebrao Patil, Vikas Vasant Deshmane, Umesh Jagannath Tupe, Chandrakant Govindrao Dighavkar, Arun Vitthal Patil
The Journal of Physical Chemistry C, 125(29), 16220-16227
Oriental Journal of Chemistry, 39(6)
Materials Chemistry and Physics, 193, 285-289
Mediterranean Journal of Chemistry, 7(5), 308-316
Inorganic Chemistry Communications, 158, 111555
Oriental Journal of Chemistry, 39(6)
Materials Chemistry and Physics, 193, 285-289
Mediterranean Journal of Chemistry, 7(5), 308-316
Inorganic Chemistry Communications, 158, 111555
Online since: June 2011
Authors: Han Xing Liu, Xun Zhou, Gao Feng Chen, Jing Wu, Zhi Dong Lin
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)
Results and Discussion Structure of organic-inorganic perovskite hybrid.
Preparation Methods of Layered Perovskite-type Organic-inorganic Hybrids[J].Chinese Journal of Synthetic Chemistry,2008, 16(1):1-7.
Mitzi, “Synthesis, Structure, and Properties of Organic-Inorganic Perovskites and Related Materials”, Prog.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Results and Discussion Structure of organic-inorganic perovskite hybrid.
Preparation Methods of Layered Perovskite-type Organic-inorganic Hybrids[J].Chinese Journal of Synthetic Chemistry,2008, 16(1):1-7.
Mitzi, “Synthesis, Structure, and Properties of Organic-Inorganic Perovskites and Related Materials”, Prog.