Abstract

Monodispersed colloids of hydrous metal oxides have begun to find roles in solving industrial problems as well as extending fundamental knowledge of surfaces and the colloidal state. Monodispersed colloids—which have uniform particle shape, size, and composition—long have been known for a few elements, water-insoluble salts, and polymer latexes. But only in the past few years have a number of general, reproducible methods been developed to make monodispersed colloidal metal oxides, as a result of work by colloid chemist Egon Matijevic at Clarkson College of Technology, Potsdam, N.Y. Following these developments, research workers at many companies and universities around the world have sought ways to apply these materials to studies of corrosion, catalysis, pigments, and magnetic tapes and memory devices. Support of Matijevic's work by Electric Power Research Institute and American Iron & Steel Institute, as well as by the National Science Foundation, indicates both the applied and fundamental aspects of h...

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