同时,由水热处理后生长的ZnO光谱可以看出,3430cm-1处出现了较宽的吸收峰,这源于ZnO表面吸附的水分子。 图16 不同处理阶段纤维的FTIR图谱 Fig.16 FTIR spectra of fibers at different treatment stages 2.3.3 水接触角测试结果 水接触角的大小可以作为...
The modification and structural changes were determined by means of the FT-IR absorption spectra. In order to determine the kind of infl uence: binder-modifier the spectroscopic FTIR analysis of samples of a fresh binder and of a binder hardened for 24 h in the air was performed by means ...
3.3. Fourier transform infrared spectroscopy (FTIR) Fig. 4 shows the FTIR spectra of ZnO NPs taken in the range (400–4500 cm−1). The FTIR broad peak at 3436 cm−1 represented O–H group stretching of O–H, H-bonded single bridge. 2106 cm−1 peak may be due to the absorption...
S17). In the FTIR spectra, because both ZnO-BC 1 and ZnO-BC 3 were subjected to a high-temperature treatment, the intensity of –OH at 3328 cm−1 was lower than that of ZnO-BC 2 (Fig. 4d). In the TG diagram, ZnO-BC 1 and ZnO-BC 3 also exhibited similar pyrolysis processes...
Catalytic performance and in situ DRIFT spectra of the CO2 + H2reaction over different catalysts.aCO2conversion, MeOH selectivity, MeOH yield and TOF values as a function of the ZnO particle sizes in different catalysts.bEvolution of the IR spectra over the M-CZZ(16) sample with time....
Typical FTIR spectra of GO, ZnO nanorods, GOZ-7 and GOZ-10 nanocomposites. Full size image TEM, HRTEM and SAED analyses The TEM, HRTEM, and SAED investigations were carried out to explain the surface morphology, lattice fringe patterns of planes, and ring configurations (patterns) of both nan...
Typical a UV–vis spectrum, b FTIR spectrum, and c Raman spectrum of ZnO-doped Co3O4 NRs Full size image $$ {E_{\mathrm{bg}}}=\frac{1240 }{\lambda}\left( {\mathrm{ev}} \right) $$ (vii) where Ebg is the band-gap energy, and λmax is the wavelength (397.0 nm) of the...
The FTIR spectra of the TiO2samples prepared at 250–900 °C by Fernández-Catalá et al. (2017) were analyzed as shown in Fig.14. The broad bands at 3000 to 3500 cm−1and 1600 cm−1were attributed to the OH stretching of physisorbed water on the surface of TiO2. As the calcinati...
FTIR spectra revealed the presence of the characteristic stretching vibrational band of Zn-O bonding at 445-418 cm(-1) and this is shifted to lower frequency with increasing the pH value from 8 to 12. PL spectra of ZnO nanoparticles at various pH values exhibit a strong UV emission band ...
Fig. 5 shows the FTIR spectra of ZnO and Zn2SiO4/ZnO composite. Show abstract Mössbauer Effect Study of Superparamagnetic Behavior of ZnFe<inf>2</inf>O<inf>4</inf> Nanoparticles Formed in ZnO Doped with Fe<inf>2</inf>O<inf>3</inf> 2019, Physica Status Solidi (B) Basic Research...