An overview of the synthesis and characterization of several Pt-Ru or Pt-MoNulcan carbon nanocomposites and one Pt-Rdgraphitic carbon nanofiber nanocomposite is provided. Each binary metal alloy nanocluster composition is accessed through the t h d decomposition of a single-source molecular precursor containing the desired metal stoichiometry. Microwave heating techniques are. used to form a Pt...

Stable ruthenium nanoparticles were prepared by passivation of the metal cores (diameter 2.7–3.2 nm by transmission electron microscopy) with ruthenium–carbon covalent bonds. Electrochemical study showed that the electronic conductivity of the particle films exhibited metal-like temperature dependence, and it decayed exponentially with the length of the alkyl spacer of the aliphatic protecting ...

The development of low-cost yet highly efficient catalysts for hydrogen evolution reaction (HER) is crucial large-scale clean and sustainable production from water splitting. Tuning the interfacial structure catalyst has emerged as an effective strategy to optimize intrinsic catalytic activity. In this study, we demonstrated deposition Ru nanoparticles by freshly prepared strong reductive Ti(II...

A reasonable design strategy to improve the utilization of noble metal electrocatalysts for hydrogen evolution reaction (HER) is crucial simplify process flow and accelerate future renewable energy economy. Here, abundant defects were created on 2.4-nm Ru nanoparticles achieve unprecedently high mass-specific reactivity in harsh acidic alkaline electrolytes. The obtained defect-enriched (DR-Ru)...

A novel photoelectrochemical aptasensor for adenosine triphosphate (ATP) detection was developed by introducing inorganic−organic photoactive nanocomposites as sensitization agents to achieve significant signal amplification. Specifically, a TiO2/Au hybrid structure was first fabricated by decorating Au nanoparticles on the surface of TiO2 film, which then was used as the photoelectrochemical m...

Carbon materials have rarely been used as support for CO2 methanation, which is usually carried out using catalysts supported on metal oxides. Here, it is shown that Ru nanoparticles supported on nitrogen-doped carbon nanofibers (NCNF) provide competitive CH4 production rate and stability compared to Al2 O3 -supported catalysts. Contrary to the general belief about the inert nature of carbon su...

In situ labelling and spectroscopic experiments are used to explain the key points in the stabilisation of ruthenium nanoparticles (RuNPs) generated in imidazolium-based ionic liquids (ILs) by decomposition of (eta(4)-1,5-cyclooctadiene)(eta(6)-1,3,5-cyclooctatriene)ruthenium(0), Ru(COD)(COT), under dihydrogen. These are found to be: (1) the presence of hydrides at the RuNP surface and, (2) the...

In recent years, the use of supercritical fluids (SCFs) for the synthesis and processing of nanomaterials has proven to be a rapid, direct, and clean approach to develop nanomaterials and nanocomposites. The application of supercritical fluid technology can result in products (and processes) that are cleaner, less expensive, and of higher quality than those that are produced using conventional ...

In previous studies, the neuroprotective effect of progestrone in diffuse traumatic brain injury has been shown. This study used mifepristone (RU-486), a potent progesterone receptor antagonist, to evaluatethe hypothesis that the neuroprotective effect of progesterone in traumatic brain injury is mediated by the progesterone receptors. The ovariectomized rats were divided into 6 groups. Brain i...

Single-Atom Sites Catalysts In article number 2300673, Dongmok Whang, Sung Jong Yoo, Namgee Jung, Joseph T. Hupp, and co-workers present a strategy to enhance the efficiency durability of sub-nanometer catalysts for electrochemical reactions. The cover art depicts strong interaction between single-atom site Ru chemically stable ZrO2-x nanoparticles, enabling superior stability improved activity...