Synthesis and spectroscopic characterization of palladium-doped titanium dioxide catalyst

Abstract

In this work, we reported synthesis of palladium (Pd)-doped titanium dioxide (TiO 2)(Pd-TiO 2) nanoparticles by the sol-gel-assisted method. The synthesized Pd-doped TiO 2 nanoparticles were characterized using X-ray diffraction, transmission electronic microscopy, energy-dispersive spectroscopy, Fourier transform infrared (FT-IR) spectroscopy and voltammetry techniques. The analysis showed that particles are spherical in shape and pure anatase form with average size about 10 nm. To investigate the catalytic efficiency of Pd-TiO 2 nanoparticles, the hydrogen evolution reaction using the deposited film of Pd-TiO 2 nanoparticles on glassy carbon electrode (Pd-TiO 2 /GCE) was studied in 0.1 M H 2 SO 4 solution using linear scanning voltammetry. This study demonstrates the feasibility of using gelatin for the synthesis of Pd-TiO 2 catalyst.

Gelatin-Coated TiO2/Pd Hybrid: A Potentially Useful Nanomaterial to Enhance Antibacterial and Anticancer Properties

“…The XRD pattern of gelatin-coated TiO 2 /Pd nanomaterials revealed XRD peaks at 25. , and 62.72 • 2θ, which were indexed to the (101), (004), ( 200), ( 105), (211), and (204) planes, respectively, of well-crystallized TiO 2 (JCPDS card No. 21-1272) in anatase, which is in accordance with previous results [23][24][25][26][27]. Incorporating nanoparticles might destroy the hydrogen bonds between gelatin molecules, allowing TiO 2 nanoparticles to insert and disperse uniformly in the nanocomposite matrix, strengthening the interaction between nanoparticles and protein molecules [23].…”

“…The amide II and III bands were caused by the bending vibration of -NH and the stretching vibration of -C-N, respectively [23,29,31]. The FTIR spectrum of TiO2 nanoparticles showed peaks at 461 and 1612 cm −1 , which may be assigned to the bending vibration of O-Ti-O in the TiO2 lattice and bending vibrations of the -OH group, respectively [24][25][26][27]. Compared to the FTIR spectrum of gelatin, gelatincoated TiO2/Pd shows additional stretching vibration corresponding to metal oxides (Ti-O/Pd-O) at 464 cm -1 in addition to the amide-I, -II, and -III peaks of gelatin, confirming the successful formation of gelatin/TiO2/Pd.…”

“…where D is the crystallite size; λ is the wavelength of the X-ray radiation; K is the Scherrer constant; β is the full width at half maximum (FWHM); and θ is the Bragg's diffraction angle [28]. The mean crystallite size determined using the Debye-Scherrer equation from the full width at half maximum (FWHM) of the distinct peak at 25.22° 2θ was 13.72 nm, whereas the XRD pattern of the gelatin-coated TiO2/Pd composite shows peaks at 25.22°, 37.85°, and 69.2°, which may be attributed to the (111), (200), and (220) planes of Pd [24]. The XRD pattern of the gelatin-coated TiO2/Pd composite indicated the successful coverage of gelatin with TiO2 and Pd nanoparticles.…”

Surface, Temperature and Optical Properties Pd-TiO₂Doped PVA Nanocomposite

“…Here the polymer matrix embedded with nano sized particle has several important roles to play. It provides the confinement potential in view of its larger band-gap relative to the material [1][2][3][4].…”

“…These studies shows that the properties likes crystallinity, structural order, thermal stability, electrical and optical behaviour of the polymer are affected by doping which depends on the interaction between the dopant and the polymer to develop particular application. Pd-TiO2 is a monoclinic and p-type semiconductor with a narrow band gap also constant paramagnetic susceptibility at low temperature [2] and it has been used in various applications including solar cells, sensors, etc. [3,5].…”