The metals with a single atom primitive unit cell do not display any polarizability change, and hence no Raman spectrum is obtained [13]. In-situ Raman measurements are needed to investigate intermediate formation during HER for Ni/NiO and changes of nickel oxidation states. In this work, we ...
FTIR spectrum of (a) pureLiNbO3, Ag-decorated LiNbO3at (b) 5 s, (c) 15 s, (d) 25 s, (e) 35 s and (f) 45 s. Full size image Raman spectra measured Figure9illustrates the Raman spectra with the wave numbers ranging from 200 to 1000. The peaks for pure LiNbO3were observed a...
采用电化学法一步制备了镍醇盐配合物Ni(OEt) 2 (acac) 2 (acac为乙酰丙酮基 ) ,并以其作为前驱体 ,控制一定水解条件制得胶体 ,分别在 4 5 0℃ ,60 0℃煅烧均得到具有立方晶型的纳米NiO粉体 .通过红外光谱 (FT_IR),核磁共振 (1HNMR),拉曼光谱 (Ramanspectrum),X_射线粉末衍射 (XRD),透射电子显微镜...
The existence of NiO is further demonstrated by Raman spectrum (Fig. 2b) showing four broad peaks corresponding to one-phonon longitu- dinal optical mode (LO at 531 cm−1)8, two-phonon transverse optical mode (2TO at 722 cm−1)18, TO + LO (at Scientific Reports |...
According to the XRD, Raman and FTIR patterns, it revealed that face-centered cubic nickel oxide was prepared on the rGO. The weight ratio of NiO in the rGO@NiO composite was about 50.2% by TG-DSC analysis. The surface of rGO@NiO composite seemed flat relatively with less pleats, ...
XRD spectrum of NiO thin films at different sputter powers Full size image has mutually combined Ni2+and O2−on the substrate. Hence, atoms are arranged in (111) preferred oriented plane followed by (200), (220), (311), and (222) planes to minimize the surface energy [20]. ...
For La1 2/3Sr1/3NiO4—a commensurately doped Mott–Hubbard system— charge- and spin-ordering in a stripe phase have been investigated by phononic and magnetic Raman scattering. Formation of a superlattice and an opening of a pseudo-gap in the electron-hole excitation spectra, as well as ...
XRD spectrum of NiO thin films at different sputter powers Full size image has mutually combined Ni2+and O2−on the substrate. Hence, atoms are arranged in (111) preferred oriented plane followed by (200), (220), (311), and (222) planes to minimize the surface energy [20]. ...
whereI2040–2300(numerator) andI2400–2450(denominator) represent the integrated intensities in the Raman spectrum regions between the wavenumbers 2040 and 2300 cm–1(the C–D peak whose intensity is affected by deuterium55) and between 2400 and 2450 cm−1(reference region where background...
confirming composite nature. To substantiate the XRD data, Raman spectra of the samples were recorded and the obtained spectra are shown in Fig.1(b). The Raman spectrum of the Ni/NiO (1:1) sample consists of single Raman shift at about 500 cm−1which corresponds to the Ni-O bond17...