Light-induced YD•/YD FTIR difference spectrum of a hydrated film of the PSII core complexes from Thermosynechococcus elongatus showed major signals at 3636(−)/3617(+) and 3594(+)/3585(−) cm-1 in the weakly hydrogen bonded OH stretching region. These peaks downshifted by 11−12 cm...
structure, which is a feature of “liquid-like” water36,37. Since the penetration depth of ATR-FTIR is ~1 μm, the collected signals of water would include those adsorbed on the top surface of the MoS2film and at the MoS2-sapphire interface. However, the absence of water peaks for ...
FT-IR spectrum The FT-IR spectra of the PVA, TiO2, and nanocomposite have been given in Fig. 4. As could be seen the intensive vibrational peaks of the two components have been weakened by forming the nanocomposite. The observed limitation on the vibration’s intensity is due to the newly...
In theory, the formation of H bonds between X-H (e.g., O-H, N-H) could lead to a red shift of X-H stretching frequency in the FTIR spectrum.28 Compared with the controlled materials of ZH nanoparticles and the original CNW, the 2 FTIR peaks shift from 3,395–3,165 cm−1 ...
In Fig. 1are reported the transmission FTIR spectra (NIR wavenumber range, 8000–4000 cm−1) for the uncured TGDDM resin (trace A), the uncured TGDDM/DDS formulation (trace B) and the same mixture after curing and post-curing (traces C and D, respectively). Two characteristic peaks attr...
FTIR spectrum of raw rice straw (R1), treated rice straw with H3PO4(R2), and carbonic rice straw (R3) Full size image The IR spectra of raw rice straw (R1) depict the board band characteristic of the O–H extended from holocellulose (cellulose and hemicellulose) at 3300 cm−1and C...
The FTIR spectrums of the raw and activated samples are presented in Fig. 3. The range of the wavenumbers is 3693.8 to 670 cm−1 with peaks from 96.68 to 83.45 cm−2 as seen (Fig. 3). In order to identify the functional groups at the distinctive peaks, the spectra results of ...
The chemical composition of PPS and HPPS papers were displayed by FTIR spectrum. As shown in Figure 4a, a new peak appeared at 1039.96 cm−1 belonging to the -SO- bond, which was due to the oxidation of -S- to -SO- by nitric acid [38]. The peaks emerging at 1641 and 738 cm...
peaks at 806.1 cm−1reflect the flexural vibrations of triazine units, and the wide peak that emerges at 3000–3500 cm−1is ascribed to NH2or NH groups [33,36]. In comparison with g-C3N4and CDs/g-C3N4composites, the obtained FTIR spectra are similar in shape, which indicates that ...
These alkyl chains can contribute to the adsorption process through van der Waals interactions and weak hydrogen bonding [40]. In summary, the FTIR spectrum provided evidence of various functional groups on theAlhagi maurorumbiosorbent, including hydroxyl, carboxylate, and alkyl groups. These groups ...