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Online since: September 2013
Authors: Wei Qiang Fan, Hong Ye Bai, Wei Dong Shi
Design and Synthesis of Metal Oxides Doped Three-dimensional order Macroporous Materials Based on SiO2 Matrixes and Their Photocatalytic Property
Wei-Qiang Fan, Hong-Ye Bai, and Wei-Dong Shi*
School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
The porous structure and morphology of samples has been characterized by TEM images.
The porous structure of the M-Macro-SiO2 was further confirmed by nitrogen adsorption-desorption isotherms.
The obtained M-Macro-SiO2 (M= Co, Fe, Ni, and Sn) exhibited 3D ordered macroporous structure.
Zhao, The Surface-Structure Sensitivity of Dioxygen Activation in the Anatase-Photocatalyzed Oxidation Reaction, Angew.
The porous structure and morphology of samples has been characterized by TEM images.
The porous structure of the M-Macro-SiO2 was further confirmed by nitrogen adsorption-desorption isotherms.
The obtained M-Macro-SiO2 (M= Co, Fe, Ni, and Sn) exhibited 3D ordered macroporous structure.
Zhao, The Surface-Structure Sensitivity of Dioxygen Activation in the Anatase-Photocatalyzed Oxidation Reaction, Angew.
Online since: December 2014
Authors: Zhao Xia Hou, Hai Lin Fan, Shao Hong Wang, Mei Han Wang, Xiao Dan Hu
Structure of HA and Adsorption principles
Structure.
It belongs to hexagonal crystal system in the crystal structure.
The crystal structure belongs to P63/m space group[2-3].
According to principles, adsorption can be classified as physics, chemistry and surface complexation.
The adsorption ability of HA is closely related to many factors in addition to its structure.
It belongs to hexagonal crystal system in the crystal structure.
The crystal structure belongs to P63/m space group[2-3].
According to principles, adsorption can be classified as physics, chemistry and surface complexation.
The adsorption ability of HA is closely related to many factors in addition to its structure.
Online since: January 2005
Authors: Zhi Zhong Dong, Haiyong Gao, Zhi Hua Dong, Jian Ting He, Cheng Shan Xue
TEM result shows that GaN nanorods own bamboo-shaped morphalogy and have a
single-crystal hexagonal wurtzite structure.The average length and dimeter of the nanorods are 3μm
and 50 nm respectively.Ga2O3 and NH3 reactived directly and synthesized GaN nanorods without any
catalyzer and the process of space-confined reactions.
Fig. 1 shows the XRD pattern of the overall crystal structure of the products synthesized by ammoniating ZnO/Ga2O3 films for 15 min at 950℃.There are three strong diffraction peaks located at 2θ=32.4º,2θ=34.5º,2θ=36.7º and a weaker peak at 2θ=48º which correspond to the orientation of (10 −10),(0002),(10 −11) and (10 −12) respectively.
The reflection peaks reveled that GaN of hexagonal wurtzite structure with lattice constants of a=0.318nm and c=0.518nm[12] was prepared.
The structure and morphology of the synthesized GaN nanorods were investigated.
Vol. 83 (1998), p. 983 [3]C.N.R.Rao,F.L.Deepak and Gautam Gundiah: Progress in Solid State Chemistry Vol. 31 (2003), p.5 [4]Han Weiqiang,Fan Shoushan and Li qunqing: Science Vol. 277 (1997), p. 1287 [5]Li Y J,Qiao Z Y and Chen L X: Appl Phys A Vol. 71 (2000), p. 587 [6]Chia-Chun Chen,Chun-Chia Yeh: J.Am.Chem.Soc.
Fig. 1 shows the XRD pattern of the overall crystal structure of the products synthesized by ammoniating ZnO/Ga2O3 films for 15 min at 950℃.There are three strong diffraction peaks located at 2θ=32.4º,2θ=34.5º,2θ=36.7º and a weaker peak at 2θ=48º which correspond to the orientation of (10 −10),(0002),(10 −11) and (10 −12) respectively.
The reflection peaks reveled that GaN of hexagonal wurtzite structure with lattice constants of a=0.318nm and c=0.518nm[12] was prepared.
The structure and morphology of the synthesized GaN nanorods were investigated.
Vol. 83 (1998), p. 983 [3]C.N.R.Rao,F.L.Deepak and Gautam Gundiah: Progress in Solid State Chemistry Vol. 31 (2003), p.5 [4]Han Weiqiang,Fan Shoushan and Li qunqing: Science Vol. 277 (1997), p. 1287 [5]Li Y J,Qiao Z Y and Chen L X: Appl Phys A Vol. 71 (2000), p. 587 [6]Chia-Chun Chen,Chun-Chia Yeh: J.Am.Chem.Soc.
Online since: December 2012
Authors: B.S. Sunder Daniel, P. Jeevanandam, Sudhakar Panday
Daniel1,3,c
1 Centre of Nanotechnology,
2 Department of Chemistry,
3 Department of Metallurgical and Materials Engineering,
Indian Institute of Technology Roorkee, Roorkee 247667, India.
The polycrystalline nanoalloys with fcc structure showed ferromagnetic behavior.
The authors observed single phase fcc structure for the alloys with spherical morphology.
(Reproduced by permission of the Royal Society of Chemistry) Co-Ni alloy nanowires with the length up to 1000 nm and diameter of about 10 nm were synthesized by heterogeneous nucleation in polyol [62].
Fenineche, Structure and magnetic properties of mechanically alloyed Co and Co-Ni, J.
The polycrystalline nanoalloys with fcc structure showed ferromagnetic behavior.
The authors observed single phase fcc structure for the alloys with spherical morphology.
(Reproduced by permission of the Royal Society of Chemistry) Co-Ni alloy nanowires with the length up to 1000 nm and diameter of about 10 nm were synthesized by heterogeneous nucleation in polyol [62].
Fenineche, Structure and magnetic properties of mechanically alloyed Co and Co-Ni, J.
Online since: May 2011
Authors: Ben He Zhong, Hai Lan Yang, Ling Yun Li, Xiao Xia Huang, Xin Long Wang, Zhi Ye Zhang, Lin Yang
The structure of the complex was carefully characterized by FTIR, TG-DTG, 1H NMR and 31P NMR.
The results of 1H NMR and 31P NMR further confirm the composition of the complex and determine the structure.
In this paper, a new method using PCl5, LiF and DME is studied and the structure of the intermediate complex of LiPF6 and DME is characterized.
The structure of C4H10O2 remain the same in the complex except the ether bond because δC 3.37ppm from CH3 and δC 3.22 ppm from -CH2- is basically consistent with the hydrogen spectrum of C4H10O2 showed in Fig.5, and the structure of the complex is concluded in Fig.6.
Handbook of Analytical Chemistry. vol.3, Beijing: Chemical Industry Press. 1998: 51-59 [7] Xinyue Wei, Zhihua Mao.
The results of 1H NMR and 31P NMR further confirm the composition of the complex and determine the structure.
In this paper, a new method using PCl5, LiF and DME is studied and the structure of the intermediate complex of LiPF6 and DME is characterized.
The structure of C4H10O2 remain the same in the complex except the ether bond because δC 3.37ppm from CH3 and δC 3.22 ppm from -CH2- is basically consistent with the hydrogen spectrum of C4H10O2 showed in Fig.5, and the structure of the complex is concluded in Fig.6.
Handbook of Analytical Chemistry. vol.3, Beijing: Chemical Industry Press. 1998: 51-59 [7] Xinyue Wei, Zhihua Mao.
Online since: July 2012
Authors: Jin Luo, Ji Wei Hu, Li Ya Fu
Therefore it is necessary to develop quantitative structure-property relationship (QSPR) models to access the photolysis of PBDEs based on limited experimental data.
QSPR models can reflect the correlation between the physico-chemical properties or intrinsic reactivity of pollutants and their molecular structure.
In this ANN, a three-layer (6-1, tansig, purelin) structure was designed.
As indicated by the regression coefficients for the molecular structure parameters, decreasing TE, CA and ELUMO values of the PBDE congeners leaded decrease of log kp values in the above QSPR models.
Stewart, MOPAC2009, Stewart Computational Chemistry, Colorado Springs, CO, USA, HTTP://OpenMOPAC.net (2011)
QSPR models can reflect the correlation between the physico-chemical properties or intrinsic reactivity of pollutants and their molecular structure.
In this ANN, a three-layer (6-1, tansig, purelin) structure was designed.
As indicated by the regression coefficients for the molecular structure parameters, decreasing TE, CA and ELUMO values of the PBDE congeners leaded decrease of log kp values in the above QSPR models.
Stewart, MOPAC2009, Stewart Computational Chemistry, Colorado Springs, CO, USA, HTTP://OpenMOPAC.net (2011)
Online since: February 2014
Authors: Riana Tri Setyadhani, Anif Jamaludin, Yofentina Iriani
From XRD patterns, it has been found that the Fe dopant could strongly affect the crystal structure.
The resulting lattice parameters as obtained by using the General Structure Analysis System (GSAS) software analysis showed that the thin films of BST and BSTF have a tetragonal structure because they have values a=b≠c and α=β=γ=900.
The addition of Fe dopant is to replace Ti in the crystal structure.
The results show that the Fe dopant could strongly affect the crystal structure as confirmed by XRD patterns.
Journal of Physics and Chemistry of Solids (2012) 957-960
The resulting lattice parameters as obtained by using the General Structure Analysis System (GSAS) software analysis showed that the thin films of BST and BSTF have a tetragonal structure because they have values a=b≠c and α=β=γ=900.
The addition of Fe dopant is to replace Ti in the crystal structure.
The results show that the Fe dopant could strongly affect the crystal structure as confirmed by XRD patterns.
Journal of Physics and Chemistry of Solids (2012) 957-960
Online since: September 2017
Authors: Michael N. Ignatov, Arseny O. Artemov, Anna M. Ignatova
Structure investigation of material samples indicate that the crystal components in the structure of produced material comply with the recommendations set out in the work of predecessors [7].
Thus, the structure of stone casting silicate materials is represented as spherical objects, consisting of parts of non-spherical shape.
Due to their structure that is an anisotropic system of crystal and amorphous areas, some properties of stone casting silicate materials reach very high values.
Fedorov, The physical chemistry of silicates and other refractory phases, Vysshaya shkola, Moscow, 1988
Ignatova, Anisotropy of the structure and mechanical properties of synthetic mineral alloy, Fundamental research. 11 (2012) 134-139
Thus, the structure of stone casting silicate materials is represented as spherical objects, consisting of parts of non-spherical shape.
Due to their structure that is an anisotropic system of crystal and amorphous areas, some properties of stone casting silicate materials reach very high values.
Fedorov, The physical chemistry of silicates and other refractory phases, Vysshaya shkola, Moscow, 1988
Ignatova, Anisotropy of the structure and mechanical properties of synthetic mineral alloy, Fundamental research. 11 (2012) 134-139
Online since: May 2013
Authors: Srimala Sreekantan, Nur Hidayati Ahmad Barudin, Geethaa Sahgal, Ong Ming Thong
The phase structure, crystallite size and crystallinity of TiO2 also play an important role in antibacterial activity.
More than that, the phase structure, crystallite size and crystallinity of TiO2 play an important role in antibacterial activity.
Analysis of the crystalline structures was performed by XRD diffractometer (Bruker AXS D8), which was operated at 40 kV and 40 mV.
Reller, Photoinduced reactivity of titanium dioxide, Progress in Solid State Chemistry. 32 (2004) 33–177
Dai, Effect of urea on the photoactivity of titania powder prepared by sol–gel method, Materials Chemistry and Physics. 107 (2008) 77–81
More than that, the phase structure, crystallite size and crystallinity of TiO2 play an important role in antibacterial activity.
Analysis of the crystalline structures was performed by XRD diffractometer (Bruker AXS D8), which was operated at 40 kV and 40 mV.
Reller, Photoinduced reactivity of titanium dioxide, Progress in Solid State Chemistry. 32 (2004) 33–177
Dai, Effect of urea on the photoactivity of titania powder prepared by sol–gel method, Materials Chemistry and Physics. 107 (2008) 77–81
Online since: October 2010
Authors: Yu Hua Zhu
Lattice constant of cubic structure is , Where H, K, L are indices of crystallographic planes.
It shows that sample No F1, F2 and F4 belong to the single phase body center cubic (BCC) structure.
It shows that all of the three samples have the single phase cubic structure.
It shows that all of the three samples have the single phase cubic structure.
Inorganic Chemistry[M].
It shows that sample No F1, F2 and F4 belong to the single phase body center cubic (BCC) structure.
It shows that all of the three samples have the single phase cubic structure.
It shows that all of the three samples have the single phase cubic structure.
Inorganic Chemistry[M].