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Online since: October 2011
Authors: Qiu Luan Chen, Wu Qin, Ning Wang, Jin Lin Lai, Wen Yan Li
Since graphene has unique atoms crystal and electronic structure, so the interaction between the surface of graphene and gas molecules will exhibit many unique phenomenon.
This will provide a unique model surface for catalytic surface chemistry.
Stoichiometric with the number of CuO to meet the minimum unit to simulate the structure of CuO clusters.
The main structure parameters of reactants, intermediates and the resultant products were shown in Fig. 1.
These results provide a detailed understanding of microscopic structure and physicochemical properties of the CO/CuO interaction related to the chemical-looping combustion technique.
This will provide a unique model surface for catalytic surface chemistry.
Stoichiometric with the number of CuO to meet the minimum unit to simulate the structure of CuO clusters.
The main structure parameters of reactants, intermediates and the resultant products were shown in Fig. 1.
These results provide a detailed understanding of microscopic structure and physicochemical properties of the CO/CuO interaction related to the chemical-looping combustion technique.
Online since: December 2012
Authors: Pankaj Pankaj, Shikha Goyal
Sonochemical decolourisation of Reactive Blue 21 and Acid Red 114 in the presence of TiO2 and Rare Earths
Pankaj* and Shikha Goyal
Department of Chemistry, Dayalbagh Educational Institute,
Dayalbagh, Agra, India, 282 110
E-mail: pankaj2@bsnl.in
Key words: Ultrasound, TiO2, Rare Earths, Decolourisation, RB 21, AR 114.
The structure of dyes and their λmax are given in (Table 1).
Table 1 Dyes structure used in the study Dyes Structure λmax Reactive Blue 21 626 Acid Red 114 518 TiO2 was characterised by powder X-ray Diffractometer (XRD) and diffraction patterns were recorded at 295 K with Phillips X’pert MPD system using Cu Kα1 (λ = 0.15405) in 2Ө range 10-60 degrees at a scan speed of 0.1º sec-1.
This difference in behavior is attributed to the difference in the molecular structures of the two dyes and their adsorption behaviors.
Mason, Ultrasound in synthetic organic chemistry, Chem.
The structure of dyes and their λmax are given in (Table 1).
Table 1 Dyes structure used in the study Dyes Structure λmax Reactive Blue 21 626 Acid Red 114 518 TiO2 was characterised by powder X-ray Diffractometer (XRD) and diffraction patterns were recorded at 295 K with Phillips X’pert MPD system using Cu Kα1 (λ = 0.15405) in 2Ө range 10-60 degrees at a scan speed of 0.1º sec-1.
This difference in behavior is attributed to the difference in the molecular structures of the two dyes and their adsorption behaviors.
Mason, Ultrasound in synthetic organic chemistry, Chem.
Online since: October 2015
Authors: Sergey V. Gnedenkov, Sergey L. Sinebryukhov, Denis P. Opra, Alexander A. Sokolov, Valery G. Kuryavyi
The sample crystal structure was characterized by X-ray diffraction (XRD) on Bruker D8-Advance diffarctometer (Germany) with CuKα-radiation.
Two types of vacant sites (intralayers and interlayers) are available in α-MoO3 crystal structure for hosting foreign ions like lithium.
The smooth voltage profile for the 1st delithiation process (as well as for the subsequent discharge–charge cycles) is due to the amorphous structure of active material at the end of the 1st discharge.
It is due to the α-MoO3 crystal structure transformation into amorphous as noted above.
For helpful discussions the authors are grateful to researches from Institute of Chemistry of FEB RAS, namely Dr.
Two types of vacant sites (intralayers and interlayers) are available in α-MoO3 crystal structure for hosting foreign ions like lithium.
The smooth voltage profile for the 1st delithiation process (as well as for the subsequent discharge–charge cycles) is due to the amorphous structure of active material at the end of the 1st discharge.
It is due to the α-MoO3 crystal structure transformation into amorphous as noted above.
For helpful discussions the authors are grateful to researches from Institute of Chemistry of FEB RAS, namely Dr.
Online since: January 2012
Authors: Guo Zheng Liang, Ai Juan Gu, Cheng Long Gu, Li Yuan
Recently, hyperbranched polymers have caught great attentions because of their unique structure and excellent properties[10-12].
Discussion Curing behavior and cured structure of HPSi/PF.
Polymerization of PF resin itself between phenolichydroxyl is responsible for the structure of cured thermosetting PF resin[17].
Consequently, such changes in structure will definitely have effect on the properties of HPSi/PF.
Phenolic resins; chemistry, application and performance, future directions.
Discussion Curing behavior and cured structure of HPSi/PF.
Polymerization of PF resin itself between phenolichydroxyl is responsible for the structure of cured thermosetting PF resin[17].
Consequently, such changes in structure will definitely have effect on the properties of HPSi/PF.
Phenolic resins; chemistry, application and performance, future directions.
Online since: July 2011
Authors: Shi Sheng Zhou, Bin Du, Nan Wang, Na Li Li
The structure of molybdate is fairly similar to the structure of phosphate.
R’4-nM (OR)n is quite lively, easy to own and occur polycondensation reaction with R’4-nM (OR)n to form a three-dimensional network structure.
Materials Chemistry and Physics, 2003, 82: 631-637
Industrial and Engineering Chemistry Research, 2001, 40(19): 4058-4068
Physical properties and structure of organic–inorganic hybrid materials produced by sol-gel process, J.
R’4-nM (OR)n is quite lively, easy to own and occur polycondensation reaction with R’4-nM (OR)n to form a three-dimensional network structure.
Materials Chemistry and Physics, 2003, 82: 631-637
Industrial and Engineering Chemistry Research, 2001, 40(19): 4058-4068
Physical properties and structure of organic–inorganic hybrid materials produced by sol-gel process, J.
Online since: April 2019
Authors: Fred J. Davis, Geoffrey R. Mitchell, Spiridon Koutsonas
Activated carbons utilise a complex porous structure composed of differently sized micropores, mesopores, and macropores to achieve an overall high surface area.
At temperatures above ~1000 °C, all of the nitrogen and hydrogen have been eliminated to leave a graphitic structure.
The molecular structure (Fig. 1) of degraded PAN gives a high axial compressive strength of PAN based carbon structures in comparison to pitch based carbon materials as reported by Weihua et al. [12].
As long as the polymer remains conducting microwave absorption increases the temperature very rapidly resulting in loss of dopant ions and collapse of the polymer backbone to a carbon structure.
Guozhong, Radiation-induced crosslinking of polyacrylonitrile fibers and the subsequent regulative effect on the preoxidation process, Radiation Physics and Chemistry 81 (2012) 622–627
At temperatures above ~1000 °C, all of the nitrogen and hydrogen have been eliminated to leave a graphitic structure.
The molecular structure (Fig. 1) of degraded PAN gives a high axial compressive strength of PAN based carbon structures in comparison to pitch based carbon materials as reported by Weihua et al. [12].
As long as the polymer remains conducting microwave absorption increases the temperature very rapidly resulting in loss of dopant ions and collapse of the polymer backbone to a carbon structure.
Guozhong, Radiation-induced crosslinking of polyacrylonitrile fibers and the subsequent regulative effect on the preoxidation process, Radiation Physics and Chemistry 81 (2012) 622–627
Online since: September 2021
Authors: Gulzhian I. Dzhardimalieva, Dmitry A. Chernyayev, Rose K. Baimuratova, Igor E. Uflyand, Evgeny S. Sorin, Denis V. Korchagin
Leninskie Gory, 1, Moscow, 119234, Russian Federation
3Department of Chemistry, Southern Federal University, B.
Introduction In recent years the attention of researchers to mixed-ligand complexes (MLC) that combines metal chelates cycle and unsaturated bonds in one structure has increased significantly [1].
Deng, Crystal structure of chloro(acrylato-O,O′)bis(1,10-phenanthrolineN,-N′)-cadmium(II), Z.
Coordination Polymer Based on Nickel (II) Maleate and 4′Phenyl2,2′:6′,2″Terpyridine: Synthesis, Crystal Structure and Conjugated Thermolysis, J.
Ed. 4th, add. and lane. - M .: Chemistry, Moscow, 1974
Introduction In recent years the attention of researchers to mixed-ligand complexes (MLC) that combines metal chelates cycle and unsaturated bonds in one structure has increased significantly [1].
Deng, Crystal structure of chloro(acrylato-O,O′)bis(1,10-phenanthrolineN,-N′)-cadmium(II), Z.
Coordination Polymer Based on Nickel (II) Maleate and 4′Phenyl2,2′:6′,2″Terpyridine: Synthesis, Crystal Structure and Conjugated Thermolysis, J.
Ed. 4th, add. and lane. - M .: Chemistry, Moscow, 1974
Online since: July 2025
Authors: Rosnah Zakaria, Siti Zafirah Zainal Abidin, Nor Kartini Jaafar
However, it can be good candidate for various micro electrical of capacitor devices.
1.0 Introduction
Graphene known as super strong and the thinnest structure of materials.
Figures 1 show the structure of graphene in 2D and 3D.
Structure of graphene in 2D and 3D.
Materials Chemistry and Physics, 153, 209–220. http://doi.org/10.1016/j.matchemphys.2015.01.005 [11] Cai, R., Wu, J., Sun, L., Liu, Y., Fang, T., Zhu, S., … Wei, A. (2016). 3D graphene/ZnO composite with enhanced photocatalytic activity.
The Journal of Physical Chemistry C, 116(28), 14848–14856. http://doi.org/10.1021/jp304845t
Figures 1 show the structure of graphene in 2D and 3D.
Structure of graphene in 2D and 3D.
Materials Chemistry and Physics, 153, 209–220. http://doi.org/10.1016/j.matchemphys.2015.01.005 [11] Cai, R., Wu, J., Sun, L., Liu, Y., Fang, T., Zhu, S., … Wei, A. (2016). 3D graphene/ZnO composite with enhanced photocatalytic activity.
The Journal of Physical Chemistry C, 116(28), 14848–14856. http://doi.org/10.1021/jp304845t
Online since: March 2019
Authors: Chandra Wahyu Purnomo, Suryo Purwono, Windia Hanifah
Starch is the main component that forms the structure of semi-solid food products and composed of several polysaccharides such as amylose and amylopectin.
Meanwhile, struvite is a white orthorhombic crystalline structure,which is composed of magnesium, ammonium, and phosphate (MgNH4PO4.6H2O) in equal molar concentrations [17].
Omaszewska, Controlled-Release Npk Fertilizer Encapsulated By Polymeric, J.Agricultural and Food Chemistry, (2003) Pp. 413–417
Lixiang, A Novel Slow-Release Urea Fertiliser : Physical And Chemical Analysis Of Its Structure And Study Of Its Release Mechanism, Biosyst.
Delcour, Hydrothermal Modifications Of Granular Starch, With Retention Of The Granular Structure : A Review, J.Agricultural and Food Chemistry, Vol. 8561, No. 8 August. 1998
Meanwhile, struvite is a white orthorhombic crystalline structure,which is composed of magnesium, ammonium, and phosphate (MgNH4PO4.6H2O) in equal molar concentrations [17].
Omaszewska, Controlled-Release Npk Fertilizer Encapsulated By Polymeric, J.Agricultural and Food Chemistry, (2003) Pp. 413–417
Lixiang, A Novel Slow-Release Urea Fertiliser : Physical And Chemical Analysis Of Its Structure And Study Of Its Release Mechanism, Biosyst.
Delcour, Hydrothermal Modifications Of Granular Starch, With Retention Of The Granular Structure : A Review, J.Agricultural and Food Chemistry, Vol. 8561, No. 8 August. 1998
Online since: February 2015
Authors: Nur Ain Ibrahim, Noriean Azraaie, Nur Amira Mamat Razali, Fauziah Abdul Aziz, Shahidan Radiman, Nurul Aimi Mohd Zainul Abidin
Its hierarchical structure allows different kinds of microfibril cellulosic fillers to be obtained known as cellulose microfibril or microfibrillated cellulose (MFC).
The morphology structure of samples were characterized using Field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD).
Young: Cellulose Structure Modification and Hydrolysis, Wiley, New York (1986), ISBN 0471827614
Borsali, in: Rodlike Cellulose Microcrystals: Structure, Properties and Applications, Macromolecules Rapid Communications, Vol. 25 (2004), p. 771-787
BeMiller: Cellulosic, in Carbohydrates Chemistry for For Food Scienctist, Vol. 1 (1997), p. 155
The morphology structure of samples were characterized using Field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD).
Young: Cellulose Structure Modification and Hydrolysis, Wiley, New York (1986), ISBN 0471827614
Borsali, in: Rodlike Cellulose Microcrystals: Structure, Properties and Applications, Macromolecules Rapid Communications, Vol. 25 (2004), p. 771-787
BeMiller: Cellulosic, in Carbohydrates Chemistry for For Food Scienctist, Vol. 1 (1997), p. 155