Restructuring and redispersion of silver on SiO2 under oxidizing/Reducing atmospheres and its activity toward CO oxidation

Article Abstract:

The effects of oxygen-hydrogen pretreatments of nanosilver catalysts in cycle mode on the structure and particle size of silver particles, and subsequently the activity of the catalyst toward CO oxidation are reported. The catalytic behavior of silver catalyst is associated with physical changes in silver crystallines because of surface restructuring and crystalline redispersion during the course of oxygen-hydrogen pretreatment steps.

Silicon Dioxide, Silver compounds

---

In situ depositing silver nanoclusters on silk fibroin fibers supports by a novel biotemplate redox technique at room temperature

Article Abstract:

Floriated clusters of silver nanocrystallites, which consist of polycrystalline grains about 5nm in diameter is successfully prepared on silk fibroin fibers (SFFs) through an in situ biotemplate redox approach at room temperature. The morphologies of silver nanoclusters were mostly attributed to the concentration of silver nitrate solution as well as special configurations and structures of silk fibroin macromolecules.

Silver Nitrate, Electric properties

---

Stability of nanocrystals: Thermodynamic analysis of oxidation and re-reduction of cobalt in water/hydrogen mixtures

Article Abstract:

A study on the stability of nanosized metallic cobalt crystallites in water/hydrogen mixtures with special emphasis on the stability of the small crystalline under Fischer-Tropsch synthesis conditions is reported. It is shown that spherical cobalt crystallites with a diameter less than 4.4 nm are likely to be oxidized under realistic Fischer-Tropsch synthesis conditions.

Cobalt Compounds, Thermodynamics

Similar abstracts:

• Abstracts: Aggregation and dispersion of small hydrophobic particles in aqueous electrolyte solutions. Instantaneous normal modes and cooperative dynamics in a quasi-two-dimensional system of particles
• Abstracts: Preparation and characterization of antimony-doped tin dioxide electrodes. part 2. XRD and EXAFS characterization.
• Abstracts: Adsorption, vibration, and diffusion of O atoms on Rh low-index and (711) stepped defective surfaces. Theoretical study of adsorption site and state for hydrogen atom on Pd(311)
• Abstracts: Vacancy-induced chemisorption of NO2 on carbon nanotubes: A combined theoretical and experimental study. Near-edge X-ray absorption fine structure investigations of order in carbon nanotube-based systems
• Abstracts: Effect of surfactants on inertial cavitation activity in a pulsed acoustic field. Effect of surfactants on the rate of growth of an air bubble by rectified diffusion

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.