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Introduction Currently, a large number of studies have been performed on oxides of perovskite structures in the search of new materials for technological, scientific and industrial applications [1,2].
The Ca0.5K0.5TiCu0.25O3 nanostructured powder exhibited only a set of diffraction lines ascribed to the cubic symmetry, which was identified from the JCPDS card number 22-0153.

Checking with JCPDS standard card[10] , we found that when calcined at 400℃, 500℃, and 600℃ pure TiO2 is mainly anatase, a mixture of rutile and anatase, and rutile respectively.
The main reason is that the number of the TiO2 surface hydroxyl restricts the photocatalytic activity[11].
This is mainly because charge layer thickness on the surface of the TiO2 decrease along with the increase in the number of lanthanum-doped.

From the calculation results of mullite crystal(JCPDS Card number is 15-776), d(001)= 0.289 nm, d(400)= 0.189 nm and d(401)= 0.158 nm, the angles between these planes are f(001)^(400)= 90°, f(001)^(401)= 33.19° and f(400)^(401)= 56.81°.
According to the Anion Coordination Polyhedron Growth Unit Theory Mode [12-13], in the open-system hydrothermal crystallization procedure under normal pressure, the growth unit is the complex formed by the attraction of cation and OH- ions, whose coordination numbers are equal to that of the cation in the crystal to be formed.

Cool pigments that absorb less near-infrared reflecting (NIR) radiation provide a number of advantages.
Fe2O3 and FeAl2O4 peaks were well indexed to JCPDS cards number of 33-0664 and 34-0192 respectively.

CNTs and CNFs have large number of potential applications which include field emission sources, hydrogen storage, catalyst substrate, chemical sensors, scanning probe tip, electrode material, nanoelectronics and mechanical reinforcements [2].
Results and Discussion The rapid decomposition of metal acetates is highly advantage for the formation of nanometer scale catalyst particles and therefore enhances the catalytic activity by increasing the number of surface active sites.
It contains two characteristic peaks at about 26.0° and 43.5°, indexed with 002 and 101 diffraction planes of hexagonal graphite (JCPDS card files, no. 41- 1487), respectively.

The XRD pattern showed that the sodium titanate hydroxide formed by the alkali treatment is, after thermal treatment, partially crystallized with the form of Na2Ti6O13 (JCPDS 73-1398 card).
Acknowledgments The authors are grateful for financial support from CAPES, CNPq (process number 150235/2007-0) and FAPERJ (Process number E-26/152.729/2006 and E-26/110.333/2007).

The final product was numbered as ZnO-1.
Following the same treatment, the final product was numbered as ZnO-2.
All the diffraction peaks of the samples are consistent with pure ZnO (JCPDS Card Files, NO. 05-0664), where lattice constant a=0.3249 nm, c= 0.5205 nm.

From Fig. 1(a), one can see clearly that the products consist of a large number of sheet-like microtructures, which has two-dimensional size of tens to one hundred of micrometers.
The ZnO peaks are indexed and compared with standard file (JCPDS card No. 36-1451), indicates that the as-synthesized composites has ZnO components corresponding to hexagonal wurtzite structure.
SEM characterization indicate that the composites consist of a large number of sheet-like microtructures.

The strong and narrow diffraction peaks indicated the high crystallinity of the sample A, which can be well indexed to pure LiFePO4 with an orthorhombic single-phase structure (JCPDS card No.83-2092) without any observable impurity phase.
It has been shown that PO43- infrared absorption spectrum has two major energy band, one strong absorption peak appears at 1150~950cm-1, another relatively strong absorption peak appears at 650~450cm-1, in the lower range of wave number, there is O-P-O bending vibration or lattice vibration of phosphate.
Fig.6b exhibits the relationship of the discharge capacities at different C-rates and the number of cycles.

All diffraction peaks could be perfectly indexed to hexagonal HA with lattice constants a = 9.48 Ǻ and c = 6.88 Ǻ (JCPDS card No. 024-0033).
Studies indicate that the increasing surfactant concentration in the post micellar region has the same effect as that of increasing the hydrophobic character resulting in an increase in the aggregation number and size of the micelles [26].
Therefore, the yield increases due to the availability of increased numbers of micelles that can act as templates.