Metallic colloidal scanning electron

Figure 3. Scanning electron micrographs of catalyst microspheres before and after leaching with acids, (a) Commercial MCM powder made with ca. 50% colloidal silica 22 nm particle size, (b) Same powder after acid leaching the active metal oxide components. Continued on next page.

Metal colloids in an aqueous solution are ideal markers for cell surfaces and intracellular components for microscopic observation (light and fluorescence microscopy, transmission and scanning electron microscopy) and for studying molecular organization and cell function It also has numerous medical uses as a drug and as a test for various diseases For more specific information about the interfacial behaviour... 

AuNPs in Liquid-State Environment Solute pure and monolayer-coated ( capped ) AuNPs are central targets in colloid and surface science also with a historical dimension [258-262]. Facile chemical syntheses introduced by Schmid et al. [260] and by Brust et al. [263] have boosted AuNP and other metal nanoparticle science towards characterization of the physical properties and use of these nanoscale metallic entities by multifarious techniques and in a variety of environments. Physical properties in focus have been the surface plasmon optical extinction band [264—269], scanning and transmission electron microscopy properties, and electrochemical properties of surface-immobilized coated AuNPs [173, 268-276], To this can be added a variety of AuNP crosslinked molecular and biomolecular... 

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