ZIF-8 was prepared according to a previous report [47] and activated prior to use, as mentioned in 2.3.4. Fig. 1 illustrates the FTIR spectrum of ZIF-8, where the observed characteristic peaks (cm−1) can be attributed as follows: 3416 (NH stretching), 3139 (imidazolate CH stretching...
To examine the morphology of ZIF-8 nanoparticles a scanning electron microscope (SEM) (device model: SEM FEI Quanta 200) was utilized. The nanoparticles were coated with gold under vacuum and analyzed using SEM. Fourier transform infrared spectrometry was conducted using a JASCO FT/IR-4600 device...
aureus. The resulted showed P-ZIF-8 was found to be more effective for both the strain of bacteria from MIC, MBC analysis which is due to increased release of free zinc residue from P-ZIF-8 [86]. The Fourier-transform infrared (FT-IR) spectra of ZIF-8 shows the presence of imidazole...
60 scans were collected for each spectrum. The results were obtained in the reflectance mode. The results were processed using the OPUS 8 software (Bruker). UV–Vis spectroscopy UV–Vis spectrophotometer UV-2600 (Shimadzu, Japan) was applied to determine the concentration of risedronate during the...
The macropores can also be seen in spent NiO-PTA/ZIF-8 catalyst, which were not blocked by deposited carbon. Figure 4A present the FT-IR spectrum of ZIF-8 and NiO-PTA/ZIF-8 catalyst with an absorption region of 400–4000 cm−1. Several bands were observed for ZIF-8 in the ...
The chemical composition, texture and morphology of the catalyst were comprehensively characterized by FT-IR, SEM-EDS, XRD, TGA, XPS and BET. In addition, 1 H NMR analyses were performed to confirm the conversion of soybean oil to biodiesel, whereas, GC鈥揗S spectrum provide information about...
patternof the PES supported ZIF-8 membrane (ZIF-8/PES membrane). These peaks match well with the peaks of ZIF-8 crystals (Fig. 1d). Combined with the ATR-IR spectrum of the ZIF-8/PES membrane (ESI,† Fig. S2), this confirms that a ZIF-8 layer was formed on the PES ...
Difference FTIR spectra were obtained by subtracting the spectrum of the catalyst from that of the sample adsorbed with pyridine. 2.3. Catalytic studies In a typical cycloaddition reaction, 18 mmol of styrene oxide and 100 mg of ZIF-8 were placed in a 250 ml stainless steel high pressure Parr...
Within the ZIF-8 spectrum, the spectral regions spanning 1350–1500, 900–1350, and 500–800 cm⁻1 were attributed to the imidazole ring's stretching, in-plane, and out-of-plane vibrational modes, respectively [44]. Notably, the C=N stretching peak aligned with a characteristic peak ...
Recently two quite different types of “nano-containers” have been recognized as attractive potential drug carriers; these are wormlike filamenteous micelles (“filomicelles”) on the one hand and metal organic frameworks on the other hand. In this work