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These peaks are indexed to crystalline structure of β-ZnMoO4 (JCPDS card no. 25-1024), corresponding to the indices of crystalline planes respectively [5].
Its indirect Eg was determined (by extrapolating the linear portion of the curve to zero absorption) to be 2.74-2.85 eV — very close to that for xMoO3-(1-x)ZnO [29], but less than that estimated for perfect ZnMoO4 [31].
To obtain a better understanding of the mechanistic details of these β-ZnMoO4-assisted photodegradation of the VBR dye with UV or Visible light irradiation, a large number of intermediates of the process were separated, identified, and characterized by a HPLC-PDA-ESI-MS, but they won’t be discussed here.

Magnetite has a cubic system as confirmed by JCPDS Card.
Acknowledgment We thank the Ministry of Research, Technology and Higher Education of Indonesia for PDUPT research grant, with the contract number 82/UN1/DITLIT/DIT-LIT/LT/2018.
Qiu, Synthesis of hollow Fe3O4 at ZnO at anatase TiO2 core-shell structured spheres, Ceram.

Next, the pseudocapacitor stores energy by using a change in the number of atoms of the metal existing in the metal oxide of the electrode material or a reduction/oxidation reaction of the conductive polymer (polypyrrole, polyaniline, etc.) [3].
The peaks at angle 2θ of 14.1, 23.10, 24.3, 27.1 and 28.2 correspond to (100), (001), (110), (101) and (200) respectively and are indexed to the hexagonal phase of WO3 (JCPDS card no. 00-0033-1387).
Hydrogenated ZnO core–shell nanocables for flexible supercapacitors and self-powered systems, ACS Nano, 7(3) (2013) 2617-2626.

Amongst the vast number of metal oxide semiconductors, i.e.
The spectral pattern was consistent with the tetragonal rutile SnO2 standard (JCPDS card No: 41-1445) crystallographic structure [45].
The band positioning and peak numbers are greatly influenced by morphological characteristics and the chemical constitution of the as-synthesized nanopowders [46].
This minimizes the number of bonded electrons that can be detached from the oxygen molecules for higher gas response occurrence.
Ali, Synthesis, characterization and fabrication of gas sensor devices using ZnO and ZnO:In nanomaterials, Beni-Suef Univ.

Such as, the oxide of In2O3[1], ZnO, TiO2 et al.
For Ba3In2(OH)12, the 2θ angles located at 15.42°, 17.83°, 23.64°, 25.28°, 28.4°, 31.13°, 34.92°, 39.47°, 48.4° and 51.97° were observed, indicating its nature of hydrogarnet struc- ture with lattice constants of a=b=c=1.406 nm, which agreed well with the JCPDS card (PDF No.30-0129).
Some impurity pesks of BaCO3 (JCPDS No.05-0378) were detected, which located at 23.89°, 24.29°, 27.71°, 34.07°, 41.97° and 44.88°.
It was reported[10] that the solubility curve of In3+ had a sharp and clear peak when the concentration of OH- was 11 mo/L, and caused the number of In3+ polymer declined.

The JCPDS card number and XRD readings (00-006-0464) were compared.
In the sample S1 found ZnO and ZnSn(OH)6, but not found in S2 and S3.
This particular peak can be attributed to the symmetric stretching vibration that is jointly experienced by the SnO2 and ZnO groups.
Reduced particle size results in a larger surface area available for interaction with bacterial cells due to the higher number of surface atoms.
Conversely, sample S1 exhibited the coexistence of ZnO and ZnSn(OH)6 phases.

SnO2 nanoparticles with rutile structure and indexed peaks were in good agreement with earlier reported values (JCPDS 41-1445).
XRD peaks were in great concurrence with a reference pattern (DB Card No. 9007433) of SnO2.
NiO QDs-ZnO NRs 10–50 mM Not mentioned [37] 3.
ZnO NR-Fe2O3 0.05-22mM 10s [39] 5.
[38] Jung DUJ, Ahmad R, Hahn Y B, Nonenzymatic flexible field-effect transistor based glucose sensor fabricated using NiO quantum dots modified ZnO nanorods.

Elemental Quantitative Analysis Data of Pure Calcium Fluoride NPs Sample number ICP analysis data.
Compared with the CaF2 standard card (JCPDS file No. 65-0535), the peaks generated by the NPs match well with the peak value of the calcium fluoride standard card, no other miscellaneous diffraction peaks appear, and no other miscellaneous phases exist.
The diffraction peaks of the samples can be assigned to CaF2 (JCPDS No. 65-0535) approximately.
However, compared with the standard card of pure CaF2, there is one more diffraction peak (200).
Kadam et al., "Magnetism in Mn-doped ZnO nanoparticles prepared by a co-precipitation method," Nanotechnology, Vol. 17, no. 5. 2006, pp. 1278-85

Without any additional treatments, analytically pure iron (Ⅲ) oxide powders (Fe2O3, >99.0%) and zinc oxide powders (ZnO, >99.0%) were all purchased from the Shanghai Macklin Biochemical Co., Ltd. 67.11 g Fe2O3 and 32.89 g ZnO powders were weighed and mixed homogeneously in stoichiometric ratios (keeping the total mass of the mixed powder at 100 g).
The molecular structure and chemical composition of the zinc ferrite powders were investigated between 400 cm-1 and 4000 cm-1 in terms of wave number using an FT-IR.
The as-prepared zinc ferrite exhibits a typical Fd3m space group structure and the diffraction peaks at 2q=18.39°, 30.25°, 35.63°, 37.27°, 43.31°, 53.74°, 57.29°, 62.91°, and 74.45°, which represent the (111), (220), (311), (222), (400), (422), (511), (440) and (533) crystal planes of zinc ferrite, corresponding well to the international standard PDF card (JCPDS No. 73-1963), indicating that the as-prepared zinc ferrite had a fcc spinel structure [2].

Recently, a big number of biological, chemical, physical, and hybrid approaches exist for synthesizing nanoparticles in various kinds.
The resultant peaks were matched with card JCPDS (No. 87-0720).
Duha Ahmed, Enhanced bioactivity of Pure ZnO and ZnO-Ag nanocomposite Using Sol-Gel method for Self-Cleaning Application, Int.