Thermal, dielectric and catalytic behavior of palladium doped PVC films

Abstract

The present paper discusses the aspects of synthesizing palladium (Pd) doped (Pd +2 and Pd 0) poly(vinyl chloride) (PVC) using simple solution cast technique. The Pd loading to PVC was altered from 2.5% to 10.0% and the material properties were studied using UV-Visible spectroscopy (UV-Vis), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDX) and Field Emission Scanning Electron Microscopy (FE-SEM). Thermal behavior of all the samples were studied using thermogravimetric analysis (TGA) and Broido's method was employed to analyse the kinetic parameters involved in different degradation steps. All the composite films were sandwitched between disk shape gold electrodes; electrical contacts were established to study the dielectric properties. The influence of Pd loading on the dielectric properties of PVC were examined. Finally, the catalytic properties of Pd 0 composites were studied using standard model reduction reaction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in the presence of aqueous sodium borohydride and reported.

Printable Hydrogel Arrays for Portable and High-Throughput Shear-Mediated Assays

“…However, neither APC nor POx coating changed the original PVC film. X-ray diffraction analysis showed that the broad diffraction peaks of neat PVC are located at 2θ 21.5 and 28.8°, being characteristic for pristine PVC . Comparing to the silanized PVC films (59.6 counts), the diffraction peaks for plasma-treated ones were significantly more intense (167–178 counts), Figure S24c.…”

“…X-ray diffraction analysis showed that the broad diffraction peaks of neat PVC are located at 2θ 21.5 and 28.8°, being characteristic for pristine PVC. 25 Comparing to the silanized PVC films (59.6 counts), the diffraction peaks for plasma-treated ones were significantly more intense (167− 178 counts), Figure S24c. Plasma treatment did not perturb the crystallinity of the film, as reported previously.…”

Silver-Nanoparticles Embedded Pyridine-Cholesterol Xerogels as Highly Efficient Catalysts for 4-nitrophenol Reduction

“…PC between 12 and 28°, which are characteristic of a crystalline structure [44,45]. However, sharp and intense Bragg reflections can be seen in case of SNC-PC-X1 and SNC-PC-X2 at 2θ values of 38.2°, 44.2°, 64.4°, 77.5°and 81.6°, which are assigned to the (111), (200), (220), (311) and (222) planes of FCC of silver, respectively [40][41][42]. The diffraction peaks are considerably broad, which indicates that the crystallite size is very small.…”

“…However, sharp and intense Bragg reflections can be seen in case of SNC-PC-X1 and SNC-PC-X2 at 2θ values of 38. [40][41][42]. The diffraction peaks are considerably broad, which indicates that the crystallite size is very small.…”

“…The removal of toxic pollutants from the wastewater is necessary for comestible use. Therefore, the development of nanocatalysts composed of SNPs are in practice to solve this environmental issue [37][38][39][40][41][42].…”