The Raman spectrum of insoluble 伪-copper phthalocyanine is enhanced relative to a barium sulphate standard which the compounds are dispersed in a silver matrix. The improvement in signal-to-noise ratio is very much greater when the silver matrix is not diluted by the standard. Silver produces a...
A silver oxide hydrosol has been prepared by reacting silver nitrate with sodium hydroxide in an aqueous solution. The colloidal particle composition and particle size have been characterized by X-ray diffractometry and transmittance electron microscopy. We have demonstrated that the sol is surface-enhan...
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...
besides water Raman band, weak peaks closely to the level of noise (Fig.3a). MAg NPs spectrum revealed the narrow peaks at 496, 587 and 628 nm. Taking into account the shape of these peaks and their shift at excitation wavelength of 390 nm (Supplementary...
The detection limit for the silver-doped sol−gel film was 104 times lower than that for the silver-coated silica beads. The sol−gel substrate was further used to obtain, for the first time, the surface-enhanced Raman spectrum of neptunyl ions in dilute aqueous solutions. 展开 ...
Nanoparticles (NP) are synthesized from fauna/flora extracts and elements such as silver (Ag), gold (Au), platinum (Pt), nickel (Ni), zinc (Zn), copper (Cu), and compounds like titanium dioxide (TiO2), ferrous oxide (FeO), and ferric oxide (Fe2O3)1. The applications are primarily...
Surface-enhanced Raman scattering of methylene blue adsorbed on cap-shaped silver nanoparticles Chem. Phys. Lett., 447 (2007), pp. 305-309, 10.1016/j.cplett.2007.09.045 View PDFView articleGoogle Scholar [12] W.L. Fu, S.J. Zhen, C.Z. Huang One-pot green synthesis of graphene oxide/...
Then, silver oxide seeds are formed during sputtering. In the sputtering process, the temperature increased to reach 200 to 300 °C. Hence, silver oxide dissolved and released oxygen. It allowed silver nanorods to grow without oxygen (Figure 7). Figure 7. (A) Synthesis of silver nanorods by...
The absence of unexpected peaks indicates purity of the metal oxide. Furthermore, the thermal stability of the nanomaterial can be determined by thermogravimetric analysis (TGA) [48]. The formation of Ag2O-NPs can be confirmed by the UV-Vis spectrum which exhibits a distinct peak in the range...
The production of AgNPs using sulfide (Ag2S) and oxide (Ag2O) of silver has also been reported by various studies.31,156 In a recent report, the culture supernatant of bacterium Bacillus licheniformis was used to produce 40 and 50 nm AgNPs, respectively.157,158 AgNPs of 1–6 nm size has...