From surface chemical analysis and byreference to the Raman spectra of appropriate chemical compounds, it was determinedthat the crystallites comprise As 2 O 3 and Ga 2 O 3 .Their Raman spectra and that of As 2 O 5 · x H 2 Oare presented here for the first time in detail. 展开 ...
Raman spectra of a number of compounds containing O2+ and NO+ cations and various MF6−, MF7− and M2F11− anions are reported. Complete assignments are made for MF6− species while those proposed for M2F11− species are more speculative. A cell suitable for use with highly corrosi...
Raman bands ascribed to the component phases are observed in the spectra before test, while a phase transformation is detected after test.doi:10.1080/00387019808003304Carrazán, S. R. G.Martín, C.García-Ramos, J. V.Rives, V.Taylor & Francis GroupSpectroscopy Letters...
Ag-substituted cobalt ferrites were synthesized using a green extract of Moringa oleifera gum by the sol–gel method. The synthesized CoAgxFe2-xO4 (x = 0–0.4) were characterized by XRD, SEM-EDX, and Raman spectroscopy. The XRD and Raman spectra analyses indicated the presence of a cub...
Raman spectroscopic study of Co-Mo/. gamma. -Al/sub 2/O/sub 3/ catalysts Laser Raman spectra of oxide precursors of hydrodesulfurization catalysts containing 0-30% molybdenum trioxide and/or 0-10% cobalt oxide on two alumina and... J Medema,VHJD Beer,C Van Stam,... - J. Catal.; (...
tructural and optical studies of Sm3+ ions doped niobium borotellurite glasse The FT-IR spectra and FT-Raman studies reveal the presence of [BO3], [BO4] and [TeO3], [TeO4] bridging and non-bridging oxygen as well as ... O.,Ravi,C.,... - 《Journal of Molecular Structure》 被引...
Feilchenfeld H, Siiman O (1986) Adsorption and aggregation kinetics and its fractal description for chromate, molybdate, and tungstate ions on colloidal silver from surface Raman spectra. J Phys Chem 90:4590–4599.https://doi.org/10.1021/j100410a024 ...
Near the critical point (Tbc), where both crystalline phases of CdSe NP’s coexist, the interplanar spacing, band gap energy and LO-CdSe phonon frequency as function of Tb exhibit remarkable changes. Raman spectra indicate that LO-CdSe mode hardens in the vicinity of Tbc due to local strain...
Raman spectra of nickel sulfides reported in previous studies are inconsistent due possibly to the difficulty in obtaining samples of the required purity in composition and phase. In this study, Raman spectra for both the low-temperature (heazlewoodite)- and the high-temperature (cubic)-phase Ni...
From the evolution of the crystalline peaks in the Raman spectra one can conclude that the impinging ions do not accommodate as defects in the lattice, but mostly displace the ions breaking the bonds and destroying the long range order. 展开 ...