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From the X-ray diffraction pattern results, the peaks of ZnTe (101), (003), (102), (103), (11) and (11) were very distinct with a hexagonal structure (JCPDS card 83-0967).
Large grain boundary region is highly disordered, and having large number of defect states due to incomplete atomic bonding with higher annealing temperature.

Porous films with very large internal surface area offer a number of intriguing features that are advantageous in the design of optoelectronic devices [5].
Although all ZnO diffraction peaks are in good agreement with the JCPDS card (36-1451) for a typical wurtzite-type ZnO crystal (hexagonal, P63mc), a significantly higher intensity of 0002 diffraction peak indicates that ZnO nanowhisker films were preferentially orientated along the c-axis direction (grown along the direction perpendicular to the (0001) crystallographic face).

Results and Discussion The XRD profiles showed that all the sintered Mg-CDA samples were completely transformed to magnesian whitlockite (β-TCMP-JCPDS 13-0404 card) phase.
Acknowledgments The authors are grateful for financial support from CNPq, CAPES and FAPERJ (Process number E-26/152.729/2006 and E-26/110.333/2007).

Introduction With the industrial development, a large number of toxic pollutants are poured into water.
The XRD peaks of SH-160 were corresponded to 2T-type hexagonal phase SnS2 (JCPDS card No. 23-0677) very well, while the XRD peaks of SA-200 could also be considered to correspond to 2T-type hexagonal phase SnS2.

Characterization All the crystalline structures of the samples were measured by a Rigaku D/max-III B X-ray powder diffractometer with CuKα1 (λ=1.5405Å) radiation and were coincident with γ-Zn3(PO4)2 phase in agreement with the respective Joint Committee on Powder Diffraction Standards (JCPDS-Card No. 30-1490).
All the diffraction peaks are assigned to the standard data of JCPDS NO.30-1490 and no characteristic peaks of the dopants are observed.
In γ-Zn3(PO4)2 hosts, the coordination number of Zn is 4 or 6.
It means a large number of Mn2+ ions occupy the Zn(2) site and little Mn2+ ions replace Zn(1) sites for the present samples.
The effective ionic radius is related to radius, coordination number, and valence.

The ZnO has a wurtzite structure with the standard JCPDS card no. 36-1451 and cell parameters of a = 0.3250 nm, c = 0.5207 nm and space group: P63mc (186).
The MgO exhibits a cubic structure with the standard JCPDS card no. 77-2179 and cell parameter of a = 0.4211 nm and space group: Fm-3m (225).
The lattice spacing of 0.1624 and 0.2475 nm corresponds to the d-spacing of the (110) and (101) planes, respectively, can be ascribed to the wurtzite ZnO with the standard JCPDS card no. 36-1451.
Simultaneously, the lattice spacing of 0.1492 and 0.2109 nm corresponds to the d-spacing of the (220) and (200) planes, respectively, and can be ascribed to the cubic MgO with the standard JCPDS card no. 77-2179.
As pH increases, the number of negatively charged surface sites increases and the number of positively charged surface sites decreases.

All samples indicate three diffraction peaks at 2θ value of about 28°, 31°, and 50° which can be indexed as (11-1), (111) and (122) reflection planes of monoclinic crystal phase of zirconia (JCPDS 37-1484), respectively [24].
Minor diffraction peak detected at 2θ value of 30° as shown in Fig. 2c was assigned to (101) plane, which is compliant with JCPDS card 50-1089 for tetragonal zirconia.
Those data have decided that the calcination temperature is corresponding with the number of sulfate groups that remain bound to the surface of ZrO2, sulfate content was decreased when calcination temperature was increased, and at the temperature higher than 600°C caused highly decomposition of sulfate.
In contrast to the sulfation effects that mainly affect an increase in the number of Brønsted acidic sites, the promotion of Ni increased the number of Lewis acidic sites as shown in Fig. 6., as expected.
Acknowledgments The authors are grateful for financial support from Ministry of Research, Technology and Higher Education of Republic Indonesia through PMDSU Batch II Research Grant (contract number 1978/UNI.P.III/DIT-LIT/LT/2017).

Furthermore, some imperfective puncheon-shaped crystals exist among a large number of whole puncheon-shaped crystals which are about 30-70 nm in length and about 10-20 nm in diameter.
It is clear from Fig. 4a that plenty of whole puncheon-shaped crystals exist in the powders with about 30-70 nm in length and about 10-20 nm in diameter, and a large number of smaller size puncheon-shaped crystals can be found among the frist type of crystals.
From the calculation results of mullite crystal (JCPDS Card number is 15-776), d(120)= 0.343 nm, d(001)= 0.289 nm and d(121)= 0.206 nm, the angles between these planes are f(120)^(001)= 90°, f(001)^(121)= 40.091° and f(120)^(121)= 49.909°.
Otherwise, this theory mode also had discovered that 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.

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As observed from the X-ray diffraction pattern, the peaks of ZnTe (101), (102), (103) and (11) were very distinct with a hexagonal structure (JCPDS card 83-0967).
As observed from the X-ray diffraction pattern, the peaks of ZnTe (101), (003), (102), (103), (11), (11) and (015) were very distinct with a hexagonal structure (JCPDS card 83-0967).
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Results and discussions FFigure 1 shows the XRD patterns of the Eu3+/Er3+/Yb3+ co-doped BaGd2(MoO4)4 phosphor (a), Eu3+-doped BaGd2(MoO4)4 phosphor (b) and the JCPDS Card No. 36-0192 (c).
The XRD patterns of the Eu3+/Er3+/Yb3+co-doped BaGd2(MoO4)4 phosphor (a), Eu3+-doped BaGd2(MoO4)4 phosphor (b) and the JCPDS Card No. 36-0192 (c).Synthesis and molecular structure of the UV-curable sealant.
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