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Online since: January 2012
Authors: Pei Xin Zhang, Xiang Zhong Ren, Chuan Shi, Jian Hong Liu
These XRD patterns are very similar, its characteristic diffraction peaks are with the same JCPDS card (No.80-0071), which indicates that both MWCNTs-doped and undoped samples are layered monoclinic structures.
In Fig.6, the discharge capacities are shown as a function of cycle number.
The characteristic diffraction peaks of LiV3O8/MWCNTs coincides with JCPDS card (No. 80-0071), which indicate that the samples still keep layered monoclinic structure, and according to the XRD patterns, the half-peak width of (100) peak become smaller compared with undoped LiV3O8, which is conducive to the spread of Li+ ion.
Online since: March 2006
Authors: Han Yong, Da Gang Guo, Ke Wei Xu
Grynpas et al.[10] observed that the treatment with low doses of strontium increased the number of bone forming sites and vertebral bone volume in rats and showed no adverse effects on the mineral profile and bone matrix mineralization.
From data of the diffraction angle 2θ(002) in HAP and 2θ(111) in Si and their spacing intervals⊿2θ(002)−(111), it was found that all the spacing intervals of Sr-contained apatite were larger than 2.519, the standard one calculated from the JCPDS cards of pure HAP and Si.
The diffraction pattern of the final pastes obtained after 2w in SBF with a designed content of 10%Sr most approached to the standard JCPDS card of SrCa9(PO4)62OH. 20 25 30 35 40 1 day 1 weeks (002) (a)Relative diffraction/cps Si(111) A A A A A S S SS 2 weeks 2θ/deg. 20 25 30 35 40 1 day 1 weeks (002) (b) Relative diffraction/cps 2 weeks AA A A A A S S SS Si(111) 2θ/degree 3600 3200 2000 1500 1000 500 (c) Relative transmission /% PO43- HPO4 PO43- O-HH2O H2O 2w 1w 1d Wave number /cm-1 Fig.2 XRD patterns of the cement final products prepared by mixing (a) 5%Sr-CPC or (b) 10%Sr-CPC powders and 0.5M PA and (c) FTIR spectra of the cement final products prepared by mixing 5%Sr-CPC powders and 0.5M PA after immersed in SBF for different time.
Online since: January 2014
Authors: Widyastuti Widyastuti, Mariani Lilis, S. Ridwan, M.A. Putrawan
Small peak of mullite formed at 2θ were in 26.27˚ and 40.88˚, in accordance with the JCPDS card number 79-1455.
In addition, mullite formation reaction derived from kyanite can be described as follows: Kyanite à Mullite + Cristoballite 3(Al2O3.SiO2) à3 Al2O3.2SiO2 + SiO2 According to Figure 5, the andalusite phase also formed in 16.03˚ and 19.54˚, in accordance with JCPDS card number 75-1217.
Online since: August 2013
Authors: Nobuhiro Matsushita, Peng Liu, Kiyoshi Okada, Jian Ping Zhou, Gang Qiang Zhu, Mirabbos Hojamberdiev, Ken Ichi Katsumata
All the diffraction peaks in Fig. 1a can be indexed to the tetragonal phase of BiOCl (JCPDS card no. 06-0249) with the lattice constants of a = 0.3891 nm and c = 7.369 nm.
As can be seen, the XRD pattern of composite photocatalyst clearly shows the diffraction peaks corresponding to BiOCl and cubic In2O3 (JCPDS card no. 06-0416).
As shown in Fig. 2a, pure BiOCl powders possess flower-like nanostructures, and each flower-like BiOCl nanostructure is composed of a number of nanoplates having the width of ca. 100–300 nm and thickness of ca. 7–20 nm.
Meanwhile, a large number of holes on the surface of In2O3 can also participate in photocatalytic reactions to directly or indirectly mineralize organic pollutants.
Online since: November 2024
Authors: Athif Afisga Mathoyah, Mochamad Dinandya Hendrico, Indah Riwayati, K. Kusdianto, Suci Madhania, Manabu Shimada, Sugeng Winardi
The XRD data was compared with The Joint Committee on Powder Diffraction Standards (JCPDS) card for hexagonal wurtzite ZnO (JCPDS 036-1451) to identify the crystalline phases present in the samples.
According to the JCPDS card, the characteristic peaks for hexagonal wurtzite ZnO are located at 2θ values of approximately 31.7°, 34.4°, 36.17°, 47.5°, 56.6°, 62.2°, 66.4°, 68°, and 69.1°, corresponding to the crystallographic planes (100), (002), (101), (102), (110), (103), (200), (112), and (201), respectively.
ZnO JCPDS-36-1451 (200) (100) (002) (101) (102) (110) (103) (112) (201) Fig. 3 XRD patterns of ZnO NPs synthesized by chemical reduction using Premna serratifolia Linn leaf extract at different calcination temperatures of 400, 500, and 600oC.
Acknowledgments The authors wish to convey their gratitude to DRPM Kementrian Pendidikan, Kebudayaan, Riset dan Teknologi Indonesia with contract number: 009/E5/PG.02.00.PL/2023 and 1202/PKS/ITS/2023 through “Penelitian Dasar Unggulan Perguruan Tinggi” scheme.
Online since: October 2011
Authors: Yin Chew Ker, Abu Bakar Mohamad
The corresponding peaks of NiTiO3 crystal planes are matching well with JCPDS card number of 00-017-0617.
The phase is monoclinic and those peaks are matching with JCPDS card number of 01-086-0207.
Online since: April 2018
Authors: Piyalak Ngernchuklin, Arjin Boonruang, Nestchanok Yongpraderm, Sittichai Kanchanasutha, Pracha Laoauyporn, Chumphol Busabok
The main component of all three samples was composed of hemihydrate after calcination at 160 oC for 2 hrs as all peaks were corresponding to JCPDS card number 45-0848.
It was obviously seen that the first main peak (CaCO3) at 2-theta 29.45 according to JCPDS card number 72-1652 was overlapped with the first main peak of hemihydrate plaster.
Online since: June 2012
Authors: Zhong Zi Xu, Ya Ru Ni, Wen Juan Huang, Chun Hua Lu, Yan Song, Heng Ming Huang, Ya Qin Wang
When reaction temperature is set at 270 and 290 °C, aggregate nanoparticles can be obtained, the corresponding XRD patterns verify those pure a-NaYF4 (JCPDS card 77-2042).
When reaction temperature is increased to 310 °C, hexagonal submicroplates with the side length of 150 nm can be obtained and well crystallized indexed to b-NaYF4 (JCPDS card 16-0334).
In order to confirm the number of photons responsible for the upconversion mechanism, the intensities of the upconversion emissions are recorded as a function of the 980 nm laser diode pump power (Fig. 3b).
For an unsaturated upconversion luminescence, the emission intensity Iout, is equal to (Iexc)n, where Iexc is the excitation intensity and the integer n is the number of infrared photons absorbed for the emitting photon, which can be determined from the slope of a Lg-Lg plot of the upconversion intensity versus pump power [7] by linear fitting.
Online since: October 2019
Authors: Hai Feng Chen, Han Jun Li, Zheng Yi Cai, Jiao Ding, Ming Liang Liu
Taking into account the increased primary cell reaction, there are a large number of Co(OH)2 on the foamed nickel surface and crystals grow along the direction which is vertical to (1-100) and (10-10) lattice planes (Fig. 2).
As a part of the reaction products, Co(OH)2 is not only a small number of low concentration, and even peeled off from the substrate (Fig. 1a).
The representative XRD patterns of a and b are well consistent with the standard card (JCPDS, NO. 30-0443) of hexagonal phase of β-Co(OH)2, indicating that the samples we prepared are β-Co(OH)2.
While four peaks are well developed in Fig3 a and the peak intensity of (001) facets surpass that of (101) facets, which is contrary to the peak situation of the standard card (JCPDS, NO. 30-0443).
What’s more, there may be Cu(OH)2·H2O (JCPDS, NO. 46-0238), whose angle of the peak is between 44.3° and 44.5°.
Online since: May 2016
Authors: Uda Hashim, W. Rahman, Chang Chuan Lee, Mohd Khairuddin Md Arshad, Bee Ying Lim, A. Rahim Ruslinda, Chun Hong Voon, S.C.B. Gopinath, A. Ayoib, V. Thivina, Saeed S. Ba Hashwan, Kai Loong Foo, V.C.S. Tony
XRD pattern of MWCNTs in Fig. 1 (a) shown the presence of peak corresponding to carbon at 25.3° and 43° which associated to (002) planes of carbon (JCPDS Card No. 29-1129).
Peaks corresponding to single phase β-SiC in XRD pattern of Fig. 1 (b) was detected at 35.6°, 43.2°, 60.3° and 71.5° which associated with cubic reflections represented to (111), (200), (220) and (311) planes of β-SiC (JCPDS Card No. 29-1129).
Acknowledgements The authors are grateful to the Department of Higher Education, Ministry of Higher Education (KPT) for funding this research through Fundamental Research Grant Scheme (FGRS) with the grant number 9003-00441.