Photoelectrical response of mesoporous nickel oxide decorated with size controlled platinum nanoparticles under argon and oxygen gas

One-pot mechanochemical ball milling synthesis of the MnOx nanostructures as efficient catalysts for CO2 hydrogenation reactions

“…However, after the CO 2 activation, a huge amount of Mn(IV) was formed on the surface with a Mn(III)/Mn(IV) ratio of B1 beside the slight reduction of the content of Mn(II) to B18%. Beside the fact that the presence of Pt usually increases the activity of CO 2 reduction, 79,80 the perturbation of the Mn oxidation state by Pt can also affect the catalytic activity. At a lower temperature, the Pt-loading resulted in B17 times higher catalytic activity, where the CH 4 selectivity was drastically increased.…”

In Situ DRIFTS and NAP-XPS Exploration of the Complexity of CO2 Hydrogenation over Size-Controlled Pt Nanoparticles Supported on Mesoporous NiO

“…Synthesis of 4.8 nm particles is based on a modified version of the polyol-method 22,7 . Briefly, 0.04 g Pt(C 5 H 7 O 2 ) 2 and 0.035 g polyvinylpyrrolidone (PVP, MW = 40,000) are solved in 5 ml ethylene-glycol and ultrasonicated for 30 minutes to obtain a homogenous solution.…”

Determination of the platinum concentration of a Pt/silica nanocomposite decorated with ultra small Pt nanoparticles using single particle inductively coupled plasma mass spectrometry

“…in heterogeneous catalysis, 1,2 sensors, 3 electrochemical 4 or fuel cell 5 research. For the determination of the concentration of the active metallic component, solution-mode inductively coupled plasma mass spectrometry (ICP-MS), [6][7][8] scanning electron microscopy coupled with energy dispersive spectroscopy (SEM-EDS) 9,10 or X-ray photoelectron spectroscopy (XPS) 11 is typically used in the literature. Single particle, or particle-mode, ICP-MS (spICP-MS) is a novel nanoparticle (NP) characterization technique, which is recently gaining increasing attention in the literature owing to its versatility and high throughput.…”