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Online since: January 2010
Authors: Pusit Pookmanee, Sukon Phanichphant, Sumintra Paosorn
Chemical Synthesis and Characterization of Bismuth Vanadate Powder
Pusit Pookmanee1,a
, Sumintra Paosorn
1,b, and Sukon Phanichphant2,c
1
Department of Chemistry, Faculty of Science, Maejo University, Chiang Mai, Thailand
2
Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
a
pusit@mju.ac.th, bsumintrapaosorn@yahoo.com,
csphanichphant@yahoo.com
Keywords: Bismuth vanadate, chemical co-precipitation method, XRD, SEM
Abstract.
A single phase of monoclinic structure was obtained after calcinations at 200-400 °C for 2h.
It is known that photocatalytic properties strongly depend on the crystal structure.
Three main crystal forms of BiVO4 are known; tetragonal (zircon-type structure), monoclinic (distorted scheelite structure, fergusonite structure) and tetragonal scheelite structure (high-temperature phase).
Single phase monoclinic structure was obtained after calcinations at 200-400 oC for 2h.
A single phase of monoclinic structure was obtained after calcinations at 200-400 °C for 2h.
It is known that photocatalytic properties strongly depend on the crystal structure.
Three main crystal forms of BiVO4 are known; tetragonal (zircon-type structure), monoclinic (distorted scheelite structure, fergusonite structure) and tetragonal scheelite structure (high-temperature phase).
Single phase monoclinic structure was obtained after calcinations at 200-400 oC for 2h.
Online since: July 2011
Authors: Guang Zhong Xing, Qing Shan Li, Jun Liu, Li Ping Wang, Wei Hong
Vinyl acetate, fiber-tourmaline nano powder and EDTA as raw material, use micro-polymer chemistry laboratory equipment, preparation of the fiber-tourmaline/PVA spinning solution.
References [1] Qingshan Li, Yazhen Wang, Huaining Zhou.Micro-polymer Chemistry Experiment, Beijing: Chemical industry press, 2003, in Chinese [2] Xinyuan Shen, Qingshan Li, Qingxiang Yang.
Chitosan / PVA Blend Films Structure and Properties [J].
The structure, properties and application of tourmaline [J].
PLA / PVA nanofibers Preparation and structure [J] Synthetic fiber industry, 2008,31(3):5~7, in Chinese [10] Chunxue Zhang, Longhui Cui,Xiaoyan Yuan.
References [1] Qingshan Li, Yazhen Wang, Huaining Zhou.Micro-polymer Chemistry Experiment, Beijing: Chemical industry press, 2003, in Chinese [2] Xinyuan Shen, Qingshan Li, Qingxiang Yang.
Chitosan / PVA Blend Films Structure and Properties [J].
The structure, properties and application of tourmaline [J].
PLA / PVA nanofibers Preparation and structure [J] Synthetic fiber industry, 2008,31(3):5~7, in Chinese [10] Chunxue Zhang, Longhui Cui,Xiaoyan Yuan.
Online since: July 2020
Authors: Tahseen A. Alaridhee, Abdullah A. Hussein, Fatima H. Malk, Dawod S. Abid
The morphology of the samples indicated that dye structure was affected in the doped pentacene.
Fig. 1: Chemical structure of pentacene C22H14 molecule and its production in powder form.
Indeed, the presence of the nitrogen and oxygen in the dye structure and hence in the dye-doped PEN structure [which is evident in IR analysis (see Figure 3)], have significantly contributed to enhancing the structure with more molecule’s dipoles.
Safapour, "Natural dyes and antimicrobials for green treatment of textiles," Environmental chemistry letters, 12 (2014)1-13
Dean, Lange's handbook of chemistry, New york; London: McGraw-Hill, Inc., 1999
Fig. 1: Chemical structure of pentacene C22H14 molecule and its production in powder form.
Indeed, the presence of the nitrogen and oxygen in the dye structure and hence in the dye-doped PEN structure [which is evident in IR analysis (see Figure 3)], have significantly contributed to enhancing the structure with more molecule’s dipoles.
Safapour, "Natural dyes and antimicrobials for green treatment of textiles," Environmental chemistry letters, 12 (2014)1-13
Dean, Lange's handbook of chemistry, New york; London: McGraw-Hill, Inc., 1999
Online since: October 2022
Authors: Balakrishnan Karthikeyan, M. Sivanathan
Computational De Novo Design of a Self-Assembling Peptide with Predefined Structure.
Journal of Theoretical and Computational Chemistry, 08(03), (2009). 347–371
Physical Chemistry Chemical Physics, 19(3), (2017), 1896–1908
The Journal of Physical Chemistry A, 119(9), (2014),1609–1615
Journal of Physics and Chemistry of Solids 111 (2017) 123–134 [13] R.
Journal of Theoretical and Computational Chemistry, 08(03), (2009). 347–371
Physical Chemistry Chemical Physics, 19(3), (2017), 1896–1908
The Journal of Physical Chemistry A, 119(9), (2014),1609–1615
Journal of Physics and Chemistry of Solids 111 (2017) 123–134 [13] R.
Online since: November 2011
Authors: B. Jaleh, M.J. Torkamany, R. Golbedaghi, M. Noroozi, S. Habibi, F. Samavat, V. Jaberian Hamedan, L. Albeheshti
,S.Habibi1,F.Samavat1,V.Jaberian Hamedan1 and L.Albeheshti5
1Department of Physics, Bu-Ali Sina University, Postal code 65174, Hamedan-Iran)
2Laser Science and Technology National Center, Tehran, Iran)
3Department of Chemistry, Payame Noor University (PNU), Iran)
4Department of Chemistry, Bu-Ali Sina University, Hamedan-Iran)
5Department of Chemistry, Islamic Azad University Central Tehran Branch, Tehran, Iran
ajaleh@basu.ac.ir
Abstract.
X-ray diffraction was carried out to study the structure of laser generated nanoparticles.
However, the atmosphere degradable makes the big challenge in their synthesis through wet chemistry.
X-ray Diffraction was carried out to study the structure of laser generated nanoparticles.
Results and Discussion Morphologies and structures of Ni nanoparticles.
X-ray diffraction was carried out to study the structure of laser generated nanoparticles.
However, the atmosphere degradable makes the big challenge in their synthesis through wet chemistry.
X-ray Diffraction was carried out to study the structure of laser generated nanoparticles.
Results and Discussion Morphologies and structures of Ni nanoparticles.
Online since: December 2016
Authors: Tomáš Kruml, Milan Heczko, Philippe Spätig, Hans Peter Seifert
The load-controlled fatigue tests were performed at 288°C in air and in pressurized water environment characterized by high-purity, deoxygenated (nitrogen purging) water with 150 ppb dissolved hydrogen which is representative of boiling water reactor/hydrogen water chemistry.
However, no spatial 3D low energy dislocation structures are found.
While in case of BA129, onset of vein-like structures was observed along with planar structures, in BA111, only individual dislocations, pile-ups and stacking faults were found.
In our case, the same structure was observed in samples BA129 and BA111 (Fig. 2c).
Seifert in: “Mean stress effect on fatigue life of 316L austenitic steel in air and simulated boiling water reactor hydrogen water chemistry environment”, Proceedings of 17th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors, August 9-13, Ottawa, Canada, Paper No. 83 (2015) [4] H.J.
However, no spatial 3D low energy dislocation structures are found.
While in case of BA129, onset of vein-like structures was observed along with planar structures, in BA111, only individual dislocations, pile-ups and stacking faults were found.
In our case, the same structure was observed in samples BA129 and BA111 (Fig. 2c).
Seifert in: “Mean stress effect on fatigue life of 316L austenitic steel in air and simulated boiling water reactor hydrogen water chemistry environment”, Proceedings of 17th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors, August 9-13, Ottawa, Canada, Paper No. 83 (2015) [4] H.J.
Online since: September 2005
Authors: Stanislaw Gierlotka, K. Konopka, Krzysztof Jan Kurzydlowski, M.J. Woźniak, J. Bieliński, J. Michalski
Effect of Sintering Temperature on Structure and Properties of
Al2O3/Ni-P Composites with Interpenetrating Phases
J.
Hardness measurements are discussed in terms of the fabrication temperature and structure of the composites.
The structures of composites were studied by SEM, TEM, (Fig. 1 and 3) and MFM (Fig. 2).
SEM images: a) powder after nickel plating, b) structure after pressing at room temperature, c) structure after HP process at 600o C, d) structure after HP process at 1000 o C Fig.2.
Trzaska, Materials Chemistry and Physics, 81 (2003) 407-
Hardness measurements are discussed in terms of the fabrication temperature and structure of the composites.
The structures of composites were studied by SEM, TEM, (Fig. 1 and 3) and MFM (Fig. 2).
SEM images: a) powder after nickel plating, b) structure after pressing at room temperature, c) structure after HP process at 600o C, d) structure after HP process at 1000 o C Fig.2.
Trzaska, Materials Chemistry and Physics, 81 (2003) 407-
Online since: August 2014
Authors: Hong Wen Ma, Mei Tang Liu, Xiao Juan Liu, Tian Lei Wang, Lin Lin
Chinese Journal of applied chemistry, 16(1999) 45
Structure and Bonding, 119(2006) 89-119
Structure and Bonding, 119(2006) 1-87
Inorganic Chemistry, 29(1990)5201-5207
Journal of Materials Chemistry, 9(1999) 805-811
Structure and Bonding, 119(2006) 89-119
Structure and Bonding, 119(2006) 1-87
Inorganic Chemistry, 29(1990)5201-5207
Journal of Materials Chemistry, 9(1999) 805-811
Online since: March 2005
Edited by: A. Méndez-Vilas
This special issue of Materials Science Forum contains the papers which were presented at the 1st International Meeting on Applied Physics (APHYS-2003), held in Badajoz (Spain), and more specifically, the selected papers which were presented during the conference sessions on Interfaces in Colloidal and Particulate Systems, covering Imaging Techniques, Microscopy; Nanoscience and Nanotechnology, Bioengineered Materials, Applied Materials Science / Solid State Physics & Chemistry / Advanced and Functional Materials and Semiconductor Materials and Devices.
The organizers had called for papers which related Physics to other sciences such as Biology, Chemistry, Information Science, Medicine, etc, or which combined various areas of Physics; all with the aim of solving practical problems.
The organizers had called for papers which related Physics to other sciences such as Biology, Chemistry, Information Science, Medicine, etc, or which combined various areas of Physics; all with the aim of solving practical problems.
Online since: May 2004
Authors: J.Y. Lee, I. Smolin Yu, Oleg L. Khasanov, E.S. Dvilis, A.E. Madison
., Institute of Chemistry of Silicates RAS, Saint Petersburg, 199155, Russia
3
373-1 Guseong-dong, Yuseong-gu, KAIST, Daejeon, 305-701, Korea
Keywords: nanoparticle, nanostructured state, coherent interface, crystalline structure, zirconia,
ultrasonic activation
Abstract.
However, such attempts meet with considerable difficulties to explain the structure features of nanosized particles from classical positions.
Summary Direct HRTEM investigations of zirconia nanoparticles have experimentally confirmed the model of nanoparticle structure as a "structural centaur" - coexistence of two (or more) spatial structures in one nanocrystallite without sharply defined phase boundary but with smooth lengthy interface (the coherent boundary).
Pokholkov: Doklady Physical Chemistry Vol. 377 (2001), p. 121
Lee: Glass Physics and Chemistry, Vol. 28 (2002), p. 322
However, such attempts meet with considerable difficulties to explain the structure features of nanosized particles from classical positions.
Summary Direct HRTEM investigations of zirconia nanoparticles have experimentally confirmed the model of nanoparticle structure as a "structural centaur" - coexistence of two (or more) spatial structures in one nanocrystallite without sharply defined phase boundary but with smooth lengthy interface (the coherent boundary).
Pokholkov: Doklady Physical Chemistry Vol. 377 (2001), p. 121
Lee: Glass Physics and Chemistry, Vol. 28 (2002), p. 322