Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: June 2008
Authors: Juan Pou, M. Boutinguiza, F. Quintero, F. Lusquiños, R. Comesaña, A. Riveiro
There are a wide range of nanofabrication techniques and crystal growth in order to obtain
nanocrystallized calcium phosphates, such as: aqueous solutions under different conditions [7], the
use of the templating technique to achieve nano-porous hydroxyapatite structure [8], the use of
microwave irradiation to synthesize hydroxyapatite nanostructure of various shapes [9], "water in
oil" emulsions used as micro-reactors to synthesize nano-sized crystals of hydroxyapatite [10], laser
ablation in vacuum of biofabricated coral material transformed into CaCO3 microparticles and
CaCO nanoparticles [11].
Elliott: Structure and chemistry of the apatite and other calcium orthophosphates, Elsevier, Amsterdam (1994)
Elliott: Structure and chemistry of the apatite and other calcium orthophosphates, Elsevier, Amsterdam (1994)
Online since: July 2015
Authors: Nur Hashimah Alias, Effah Yahya, Tengku Amran Tengku Mohd, Nurul Aimi Ghazali, Tajnor Suriya binti Taju Ariffin
Absorbance that appear at various wavelength show the presence of molecular structure of the sample.
The high viscosity of mushroom polysaccharide results from both its high molecular weight and long chain structure.
In Hand Book of Surface and Colloid Chemistry (pp. 689-699).
The high viscosity of mushroom polysaccharide results from both its high molecular weight and long chain structure.
In Hand Book of Surface and Colloid Chemistry (pp. 689-699).
Online since: February 2006
Authors: Sittidej Teekateerawej, Junichi Nishino, Yoshio Nosaka
TiO2 Photocatalytic Micro-Channel Reactors Using Capillary Plates
Sittidej Teekateerawej, Junichi Nishinoa and Yoshio Nosakab
Department of Chemistry, Nagaoka University of Technology, Nagaoka, 940-2188, Japan
a
nishino@chem.nagaokaut.ac.jp, b
nosaka@nagaokaut.ac.jp
Keywords: Titania, TiO2, Reactor, Photocatalyst, Methyleneblue, Microchannel, Filter
Abstract.
The multiplication of gases in a CP was confirmed by Sakurai et al. [3] and Tanimori et al. presented the new approaches of X-ray crystal structure analysis using timing information obtained by the GSGC [4].
IN OUT (suction) TiO2 coated capillary plate Light head Laminating film MB solution IN OUT (suction) TiO2 coated capillary plate Light head Laminating film MB solution Fig��2.� Structure of the TiO2 photocatalytic micro channel reactor using a capillary plate as the supporting materials.
The multiplication of gases in a CP was confirmed by Sakurai et al. [3] and Tanimori et al. presented the new approaches of X-ray crystal structure analysis using timing information obtained by the GSGC [4].
IN OUT (suction) TiO2 coated capillary plate Light head Laminating film MB solution IN OUT (suction) TiO2 coated capillary plate Light head Laminating film MB solution Fig��2.� Structure of the TiO2 photocatalytic micro channel reactor using a capillary plate as the supporting materials.
Online since: January 2015
Authors: Zhuang Liu, Jiang Chang, Yi Ran Nie, Zhi Hui Sun, Li Juan An
For LiNbO3 crystal with ABO3 form structure, H+ ions can come into the lattices and combines with O2- ions to form OH-.
From the viewpoint of Li-vacancy model, there are Li+ vacancies and antisite Nb (NbLi)4+ defects in pure congruent LiNbO3 crystal and the OH- absorption spectra reflect the change of the defects structure[9].
Wang: Materials Chemistry and Physics Vol. 102 (2007), p. 281
From the viewpoint of Li-vacancy model, there are Li+ vacancies and antisite Nb (NbLi)4+ defects in pure congruent LiNbO3 crystal and the OH- absorption spectra reflect the change of the defects structure[9].
Wang: Materials Chemistry and Physics Vol. 102 (2007), p. 281
Online since: December 2013
Authors: G. Arumaikkannu, K. Hariharan
Using RP, complex structured parts can be modeled in considerable time and these models can be used for design verification, and form and fit.
HA powder, with bio-compatibility and bio-activity, has already been used in clinics for filling of bone defects due to its similar chemical composition and structure.
[6] Yingkai Liu, Dedong Hou, Guanghou Wang “A simple wet chemical synthesis and characterization of hydroxyapatite nanorods”, J.Materials Chemistry and Physics, Vol 86, pp 69–73, 2004
HA powder, with bio-compatibility and bio-activity, has already been used in clinics for filling of bone defects due to its similar chemical composition and structure.
[6] Yingkai Liu, Dedong Hou, Guanghou Wang “A simple wet chemical synthesis and characterization of hydroxyapatite nanorods”, J.Materials Chemistry and Physics, Vol 86, pp 69–73, 2004
Online since: June 2014
Authors: Fei Fan Deng, La Mei Yang, Zheng Dong Deng, Guo Fu Xu
an effective method in advanced sewage water treatment for EDCs interception.However,the membrane fouling will eventually happen during the working process due to concentration polarization and pollutants deposition,and this may lead to some serious problems such as disqualified processed water and shortened life span of the membrane, therefore,periodical backwash for the membrane is needed to ensure its proper functioning.The backwash water carries the pollutants away from the membrane so the membrane will be fresh again,then the used backwash water and the concentrated polluted water on the polluted side will be collected for further treatment to decompose the EDCs at last.
2. 2 Decomposition
The second step of EDCs removal process is decomposition.In this step, photocatalytic oxidation is applied to ensure the thorough decomposition of EDCs.It is a water treatment method using semiconductor as catalyst for the oxidation of pollutants.The semiconductor particles have energy band structure
TiO2 is one of the most mommon photocatalysts applied in Photocatalytic oxidation,if the wavelength of the light strikes on TiO2 is equal to 387.5nm or less, electrons will be motivated and leap into CB,creating the strong oxidizing holes and electrons structure.Nowadays,new techniques has made it possible for TiO2 to be motivated by visible light,of which the wavelength is much longer than the 387.5nm ultraviolet light,these techniques include photosensitization and adding special reagents.Those techniques pave ways for the photocatalytic oxidation of pollutants under milder working conditions,making this water treatment method more practicable and easier to popularize.
Tang,Wanguo Hou :Chemistry, 2001,2:76~80.
TiO2 is one of the most mommon photocatalysts applied in Photocatalytic oxidation,if the wavelength of the light strikes on TiO2 is equal to 387.5nm or less, electrons will be motivated and leap into CB,creating the strong oxidizing holes and electrons structure.Nowadays,new techniques has made it possible for TiO2 to be motivated by visible light,of which the wavelength is much longer than the 387.5nm ultraviolet light,these techniques include photosensitization and adding special reagents.Those techniques pave ways for the photocatalytic oxidation of pollutants under milder working conditions,making this water treatment method more practicable and easier to popularize.
Tang,Wanguo Hou :Chemistry, 2001,2:76~80.
Online since: October 2014
Authors: Vlad Carlescu, Dumitru Olaru, Gheorghe Prisacaru
Experimental results and model fitting
The silicone elastomer films based on polydimethylsiloxane (PDMS) were prepared by sol-gel technique at “Petru Poni” Institute of Macromolecular Chemistry, Iasi – Romania [17,18].
Klein, A dynamic finite element method for inhomogeneous deformation and electromechanical instability of dielectric elastomer transducers, International Journal of Solids and Structures 49 (2012) 2187–2194
Krishna Kumar, A New Stored Energy Function for Rubber Like Materials for Low Strains, Mechanics of Advanced Materials and Structures 16 (2009) 402–416
Klein, A dynamic finite element method for inhomogeneous deformation and electromechanical instability of dielectric elastomer transducers, International Journal of Solids and Structures 49 (2012) 2187–2194
Krishna Kumar, A New Stored Energy Function for Rubber Like Materials for Low Strains, Mechanics of Advanced Materials and Structures 16 (2009) 402–416
Online since: June 2010
Authors: Jian Ding, Ke Hong Wu, Zhi Bing Ding
l With multidimensional structure characteristic.
It can realize many three-dimensional structure of special topic on the basis of two-dimentional space, the connection between every thematic entity can be carried on through the attribute.
The destruction from the area used for chemistry biological war manoeuvre and nuclear test to the natural ecological environment is always more calamitous.
It can realize many three-dimensional structure of special topic on the basis of two-dimentional space, the connection between every thematic entity can be carried on through the attribute.
The destruction from the area used for chemistry biological war manoeuvre and nuclear test to the natural ecological environment is always more calamitous.
Online since: May 2011
Authors: Gui Yang Liu, Jun Ming Guo, Bao Sen Wang, Ying He
Molten salt combustion synthesis of LiMn2O4 at 600oC: the effect of calcination time
Guiyang Liu1, a, Junming Guo2, Baosen Wang1, Ying He1
1College of Science, Honghe University, Mengzi Yunnan, China 661100
2Key Laboratory of Ethnic Medicine Resource Chemistry, State Ethnic Affairs Commission & Ministry of Education,Yunnan University of Nationalities, Kunming Yunnan, China 650031
aliuguiyang@tsinghua.org.cn
Keywords: lithium ion batteries, spinel, combustion method, molten salt
Abstract.
In this paper, we focus on the effects of time and the molar ratio of lithium/manganese on the phase structure and electrochemical performance of the products prepared at 600oC.
The main peaks of the patterns correspond to the spinel LiMn2O4 with cubic structure and Fd-3m space group ((JCPDS 35-0782), indicating that the main phase of the patterns are LiMn2O4.
In this paper, we focus on the effects of time and the molar ratio of lithium/manganese on the phase structure and electrochemical performance of the products prepared at 600oC.
The main peaks of the patterns correspond to the spinel LiMn2O4 with cubic structure and Fd-3m space group ((JCPDS 35-0782), indicating that the main phase of the patterns are LiMn2O4.
Online since: July 2020
Authors: Kelimah Elong, Nurhanna Badar, Nor Fadilah Chayed, Norlida Kamarulzaman
Band Gap Narrowing of MgO and Mg0.95Zn0.05O Nanostructures
Nor Fadilah Chayed1,2*, Nurhanna Badar2, Kelimah Elong1,2
and Norlida Kamarulzaman2,3
1School of Chemistry and Environment, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
2Centre for Nanomaterials Research, Institute of Science, Universiti Teknologi MARA,
40450 Shah Alam, Selangor, Malaysia
3School of Physics and Materials, Faculty of Applied Sciences, Universiti Teknologi MARA,
40450 Shah Alam, Selangor, Malaysia
*norfadilah6231@salam.uitm.edu.my
Keywords: MgO, Mg0.95Zn0.05O, Band gap, nanostructures
Abstract.
Nanostructured magnesium oxide (MgO) exhibits unique optical, electronic, thermal and chemical properties due to its characteristics structures.
The XRD patterns represent the diffraction peaks of (111), (200), (220), (311) and (222) which matches with the ICDD pattern number, 01-087-0651 for MgO cubic structure belonging to the space group of Fm-3m.
Nanostructured magnesium oxide (MgO) exhibits unique optical, electronic, thermal and chemical properties due to its characteristics structures.
The XRD patterns represent the diffraction peaks of (111), (200), (220), (311) and (222) which matches with the ICDD pattern number, 01-087-0651 for MgO cubic structure belonging to the space group of Fm-3m.