A thermodynamic model of quaternary polymeric solution was developed for membrane formation. It incorporates two mixed solventsN-methyl-2-pyrrolidone (NMP) and tetrahydrofuran (THF), and two high molecular weight polymers cellulose acetate (CA) and polyvinyl chloride (PVC). Also, another polymeric solution was modeled by replacing (CA) with polyvinylpyrrolidone (PVP). The developed model depend...

Polyvinyl pyrrolidone capped Zn1-xMnxS (0 ≤ x ≤ 0.1) nanocrystals have been synthesized using wet chemical co-precipitation method. Crystallographic and morphological characterization of the synthesized materials have been done using X-ray diffraction and transmission electron microscope. Crystallographic studies show the zinc blende crystals having average crystallite size approx. 3 nm, which ...

Paracetamol is an important anti-inflammatory and analgesic drug widely used in biological disorders. One of major problems with this drugs is its low solubility thus dissolution rate in biological fluid, which results into poor bioavailability after oral administration. In this study polyvinyl pyrrolidone (PVP) is used to enhance bioavailability of paracetamol. Paracetamol and PVP are used in ...

Steroidal estrogens are a representative type of endocrine-disrupting chemical contaminant that has been detected in surface water. In this paper, modified polyvinylidene fluoride (PVDF) membranes were prepared by adding different amounts of polyvinyl pyrrolidone (PVP) and nano-TiO2 particles. PVDF-PVP membrane adsorption, UV photolysis and PVDF-PVP-TiO2 membrane photocatalysis performance were...

Nanocomposites based on gold nanoclusters (AuNCs) with polyvinyl pyrrolidone as ligand and reduced graphene oxide (RGO) have been prepared and employed as efficient electrocatalysts for oxygen reduction reaction (ORR). AuNCs were synthesized through a wet chemical approach and then loaded onto the RGO. The as-prepared hybrid materials were pyrolyzed to remove the organic ligands. The composites...

Highly monodispersed CdS nanoparticles using polyvinyl pyrrolidone (PVP) as the capping agent were synthesised by chemical coprecipitation method. The surface‐modified cadmium sulfide nanoparticles were found to be remarkably stable. In the presence of PVP, cubic phase with small grain size of CdS were observed in XRD. The peaks were identified to originate fro...

Aconitum balfourii Stapf. (Family: Ranunculaceae) is a rare medicinal herb distributed at high altitude (2800-4200 m) of Himalayan region. It is rich in secondary metabolites, especially aconitines, having medicinal properties. Secondary metabolites, mainly polyphenols, cause hinderance in the isolation of good quality DNA from the plant. Therefore, in the present investigation, an attempt was ...

BiOCl:Eu ultrathin nanosheets were synthesized through a facile solvothermal method with the assistance of polyvinyl pyrrolidone. The ultrathin nanosheets showed a size ranging from 50–100 nm and a height of 2.9 nm, which is about four [Cl–Bi–O–Bi–Cl] layers. In addition, the luminescence properties and mechanism were investigated in detail, and compared with that of the nanoplate. It was found...

In this work, ball-like Ag nanorod aggregates have been synthesized via a simple seed-mediated method. These Ag mesostructures were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), ultraviolet-visible spectroscopy (UV-Vis), and X-ray diffraction (XRD). Adding a certain amount of polyvinyl pyrrolidone (PVP) can prolong its coagulation time. These Ag na...

In order to improve the water-solubility and long-term antibacterial activity of copper nanoparticles (CuNPs), a poly-L-lysine-modified reduced graphene oxide (PLL-rGO) was used as the carrier of CuNPs, and a poly-L-lysine/reduced graphene oxide/copper nanoparticles (PLL-rGO-CuNPs) hybrid was prepared by anchoring the CuNPs on the reduced graphene oxide surface. The novel PLL-rGO-CuNPs hybrid w...