Silica-supported Au nanoparticles decorated by TiO2: Formation, morphology, and CO oxidation activity

Article Abstract:

Au-Tio2 interface on silica support is aimed to be produced in a controlled way by use of Au hydrosol and for this purpose two colloid chemical preparation route for synthesis of Au-TiO2/SiO2 catalysts are developed. It is observed in the methods that at higher TiO2 loading (approximately 4 wt %) Ti appears both on the SiO2 support and in Au particles, and with increasing TiO2 concentration CO oxidation activity is enhanced.

Gold Compounds, Titanium dioxide, Chemical properties

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Hemoglobin adsorption to silica monitored with polarization-dependent evanescent-wave cavity ring-down spectroscopy

Article Abstract:

The adsorption of human hemoglobin to a fused-silica surface from aqueous solution was monitored by using Evanescent-wave cavity ring-down spectroscopy. The orientation of the adsorbed hemoglobin molecules is found to change as adsorption progresses, but with a different time profile than adsorption itself.

Science & research, Silicon Dioxide, Research, Spectra, Hemoglobin synthesis, Ring-opening polymerization

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