2024年12月11日 · The wurtzite phase of ZnO, with a space group of P6 3 mc, was confirmed through Rietveld refinement of X-ray diffraction (XRD) measurement. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) demonstrate that PVA and PVP-capped ZnO NSs exhibit significantly reduced particle and grain sizes.

PXRD of uncoated and ZnO NPs coated fibers fairly differ, with former exhibiting highly amorphous nature and latter showing additional ZnO peaks at 34.42° and 36.41° corresponding to (002)...

2022年12月1日 · The PXRD pattern of P-ZnO confirmed the presence of ZnO with traces of ligand P in it [Fig. 3]. In 1 H NMR spectrum of P-ZnO, peaks at δ 6.94 and δ 8.3 ppm (aromatic hydrogen atoms) disappeared from it in comparison to 1 H NMR spectrum of ligand P with broadening of peak around δ 9.04 ppm (–OH group) [Fig. 2 S] which supported the ...

X-ray Diffraction (XRD) and Ultra Violet Visible (UV-VIS) Spectroscopy have been used to characterize ZnO nanopowder products through (Al+Mn) doping. The results show that AlMnZ0,...

6 天之前 · This study reports the synthesis of a novel ZnO nanostructure with a flower petal morphology using surfactant-assisted and sonochemical techniques. The ultrasonic treatment of precursors enabled the self-assembly of ZnO nanoparticles into highly porous, interconnected structures. Structural characterization via powder X-ray diffraction confirmed the presence of the wurtzite ZnO phase with ...

2018年9月15日 · XRD analysis revealed that the annealed ZnO thin films consist of single phase ZnO with wurtzite structure (JCPDS 36-1451) and show the c-axis grain orientation.

2016年11月1日 · PXRD and XPS analyses show the formation of a PdZn phase at reduction temperatures as low as 250 °C. PdZn bimetallic formation enormously enhances CH 3 OH production; however, reduction at higher temperature ∼700 °C …

The key goal of this study is to innovate the pure and 0.05, 0.10 and 0.15 wt.% of Cu-doped ZnO NPs through co-precipitation technique. PXRD pattern shows the hexagonal crystal structure with no any phase impurity were observed for all the synthesized samples.

Figure 3. (A) PXRD patterns, (B) Raman spectra of the samples, (C) SEM, (D) HR-TEM images of 0.1 wt% Au/ZnO. PXRD: Powder X-ray diffraction; SEM: scanning electron microscopy; HR-TEM: high-resolution transmission electron microscopy.

1 天前 · We explored the PL spectral variations corresponding to the defect centers at these low-coordinated surface sites by employing two excitation energies. The observed reduction in bandgap and passivation of intrinsic defects (F-centers) in (ZnO)x (MgO)1–x compounds are dependent on dopant concentration and synthesis temperature.