A Hitachi S-3200N scanning electron microscope (SEM) equipped with a cold filter emitter and an energy-dispersive X-ray spectroscopy (EDS) detector (INCA, Oxford Instruments) was employed to analyze the chemical composition and purity of the ensemble of Pt NCs.

2021年10月1日 · Since polyvinylpyrrolidone (PVP) shows excellent biocompatibility, chemical stability, low toxicity and it can be considered as a pore-former, blending PVP into PES is a good choice to improve the hydrophilicity and antifouling of the membrane.

2017年5月20日 · Solid polymer electrolyte has been prepared with the combination of PVP (poly vinyl pyrrolidone) and magnesium sulfate heptahydrate (MgSO 4 ·7H 2 O) by solution cast technique and subsequently characterized for possible polymer battery application. Structural studies were carried out by XRD technique.

Binary blend compatibility of polyacrylonitrile (PAN) and polyvinylpyrrolidone (PVP) was computationally simulated at both molecular and mesoscopic levels in order to provide...

2020年11月15日 · Superabundant PVP can act as a physical barrier and poison limiting the access of Br − to the Bi core and destroying the structure of the metal core. The solvation of PVP indicated dramatic adsorption and desorption from the BiOBr catalyst. Appropriate PVP molecules can easily attach to the catalyst and detach from the surface.

ABSTRACT:Colloidal synthesis offers a route to nanoparticles (NPs) with controlled composition and structural features. This Perspective describes the use of polyvinylpyrrolidone (PVP) to obtain such nanostructures. PVP can serve as a surface stabilizer, growth modifier, nanoparticle dispersant, and reducing agent.

2022年7月5日 · The surface and cross-sectional morphologies of the PES–PVP–BN blend membranes were evaluated by scanning electron microscopy (SEM, JSM-IT300)). The cross-sectional element distribution of the composite membranes was analyzed by energy dispersive X-ray spectrometry (EDS).

用不同量的PVP和不同反应时间制备的Ag纳米结构的SEM图像，包括（a）立方体（1.0mM PVP55,5分钟）（b）截短的立方体（0.1mM PVP55,5分钟）（c）截短的立方体（1.0mM PVP55,20分钟）（d）八面体（0.1mM PVP55,20分钟）（e）立方体（1.0mM PVP10,20分钟）（f）截短的八面体（0.1mM ...

2019年4月17日 · Polyvinylpyrrolidone (PVP, MW = 8000 g/mol, Alfa Aesar)-stabilized palladium nanoparticles were synthesized through the reduction of palladium chloride (PdCl 2, Alfa Aesar) by tetra ethylene glycol (TEG, Merck) in the presence of potassium hydroxide

SEM images were shown that developed nanogels were highly porous and spongy. Numerous pores present in PVP-k30-based formulations can be ascribed to the presence of hydrophilic and ionic groups of polymer (PVP-K30) and monomer (AMPS).