Redox catalysis using Ag@SiO2 colloids

Article Abstract:

A study was conducted to determine whether Ag@SiO2 colloids can be used for redox catalysis. Results showed that silver particles within silica shells are not more catalytically active that conventional sols, but can be used as stable nanoreactors for redox catalysis and undergo particle coalescence during catalysis. Controlling the rate of catalysis was also possible by tuning the silica shell thickness.

Silica, Oxidation-reduction reaction, Oxidation-reduction reactions, Colloids, Catalysis, Silver compounds, Silicon dioxide

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Interaction of Al2O3 and CeO2 surfaces with SO2 and SO2 plus O2 studied by X-ray photoelectron spectroscopy

Article Abstract:

X-ray photoelectron spectroscopy (XPS) is used to study the interaction of Al2O3 and CeO2 thin films with sulfur dioxide or with mixtures of SO2 with O2 at various temperatures. The conclusion states that the amount of the sulfates on the CeO2 surface treated with the SO2 plus O2 mixture at less than 300 degree C corresponds to the formation of a 3 D phase of the Ce(III) sulfate.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Science & research, All Other Basic Inorganic Chemical Manufacturing, Thin Film Materials, Industrial inorganic chemicals, not elsewhere classified, Sulfur Dioxide, Analysis, Thin films, Optical properties, Dielectric films, Thermal properties, Photoelectron spectroscopy, Sulphur dioxide

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