XPS data treatments were carried out using the software ThermoAvantage and the spectra energy was calibrated with the first deconvolved C1s peak (attributed to the CC bonding) rescaled at 284.8 eV. IR spectra w
The ratio of VTMO to SiO2 nanoparticles is chosen as 0.5:1.0 by weight (considering the calculations of percentage of non-volatile component (NV%) of SiO2 nanoparticle solution –Table 1) regarding FTIR analysis. Table 1. Reaction parameters and the results of the experiments conducted to ...
The MDHM conversion rates were estimated from the peak areas obtained by analysis on a Shimadzu GC-14C gas chromatograph (for testing conditions, see Table S1 in the Supporting information). For calibration different mass fractions of MDHM in isopropanol (IPA) solutions were analyzed (S = 317.3...
However, as it can be seen in the FTIR spectrum of Fe3O4/SiO2-Pr-SH (Fig. 1C), the characteristic peak of the SH functional groups disappears from 2553 cm−1 with deposition of the Ag NPs due to replacement of the SH bonds with SAg bonds. This observation approves successful ...
The deconvolution of the FTIR spectra were done for all samples. Fig. 3 shows the deconvoluted FTIR spectrum of 0 and 1 mol% Dy2O3 samples as patterns. The parameters of deconvoluted bands of all samples are tabulated in Table 3, and their assignments are summarized in Table 4. Download: ...
As the B2O3 content increases to 25 % mol, a new absorption peak emerges, signifying the creation of non-bridging oxygen species (NBOs). Table 2. FTIR spectroscopy absorption bonds of (65-x) SiO2. xB2O3.3Al2O3.9CaO.23Na2O, x = 15,20,25 %mol. GSB1(x = 15), GSB2(x = 20),...
. Higher reaction temperatures lead to larger amounts of H/D exchange, consistent with a larger number of M–H sites and higher rates (Supplementary Fig.8, Supplementary Table9). In situ IR for Ga/SiO2also provides evidence for the heterolytic dissociation of H2. The peak at 3745 cm...
Therefore, Fourier-transform infrared (FTIR) spectroscopy was employed to analyze the MIP, NIP, and amino-functionalized SiO2 particles. As illustrated in Fig. 3n, the characteristic peak at 3470 cm⁻1 indicates the presence of unstable hydroxyl groups (–OH) on the surface of SiO2. The ...
The peak due to the disordered graphite structure of B4C is present 1378 cm−1 [29]. In addition to the peaks belonging to SiO2 and B4C chemical structures, there is an absorption band at around 538 cm−1 due to the Ti–O–Ti bond [28]. FTIR spectrum of the SiO2/B4C(15) ...
The physical and chemical properties of raw and modified samples (ZnFe2O4@SiO2@L- lysine@SO3H) were characterized by TGA, EDX, PXRD, Map, and FTIR analyses. The prepared nanocatalyst has excellent catalytic activity in synthesizing the oxidation of sulfides to the sulfoxides and Synthesis ...