Spectroscopic, magnetic, and optical characterization of nanocomposite films of polyvinylpyrrolidone doped with cerium disulphate

Abstract

New nanocomposite hybrid films of a well dispersed cerium disulphate Ce(SO 4 ) 2 nanoparticles into the polyvinylpyrrolidone (PVP) matrix were prepared by a casting technique. The nanostructural nature and complex formation were investigated using the transmission electron microscopy (TEM), the nuclear magnetic resonance (NMR), and the Infrared (IR) spectroscopy. The magnetic measurements at room temperature, using a vibrating sample magnetometer (VSM), and the obtained magnetic parameters revealed that the investigated nanocomposites belong to a category of magnetically soft materials that find widespread applications in contemporary fine technologies. Optical absorption spectra were measured in the ultraviolet (UV)-visible region and the fundamental absorption edge E a , the energy gap E g and width of the tail of localized states E e were evaluated and discussed in terms of the solid band theory. The monotonic increase of these optical parameters with the dopant concentration may be attributed to probable segregation effects occurring in the amorphous host matrix.

Morphology enhancement of TiO2/PVP composite nanofibers based on solution viscosity and processing parameters of electrospinning method

“…To understand the controlled hydrolysis of Ti alkoxides and their subsequent transformation in the prepared sol–gel solutions, FTIR method has showed promising results . Thus, the “one‐pot” sol solutions of TIP/AcOH in 2‐propanol with PVP (3 wt %) and without it and the electrospun TiO 2 /PVP nanofibers were studied by FTIR spectroscopy technique (after their preparation at room temperature) as shown in Figure .…”

“…Therefore, it can be used in non‐aqueous solutions, as well. This polymer has showed extensive applications in the synthesis of nanostructures, since carbonyl group in pyrrolidone ring can make complex with many inorganic species …”

Enhancement of Electrical and Optical Properties of Polyvinylidene Fluoride Samples by Cerium Sulfate Addition

“…As can be seen in the inset of Figure 5, Ce(SO 4 ) 2 presents characteristic peaks at 225 nm, 240 nm, and 320 nm, values that are close to those reported in the literature. In addition, Basha and coworkers found a peak at 290 nm attributed to electronic transition 5d→4f [18]. Ce(SO 4 ) 2 addition changes the optical absorbance at the UV region of PVDF, appearing as two "shoulders" close to 240 nm and 300 nm.…”

Mechanical and Barrier Properties of PVP-Carbon Dot Nanocomposite Films

“…Role of PVP contributed to synthesis nanoparticles are surface stabilizers, shape control, reducing agents and dispersants [8]. However, study composite films PVP with nano particles was found on optical improvement using Ce(SO4)2 [9] and Ag and Au [10].…”