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Using the sol‐gel method a series of nonstoichiometric nanosilica doped with the rare earth element Ce (CexSi1–xO2–δ, x = 0.0–0.14) were prepared in order to modify the physicochemical properties of the nanosilica surface and to enhance the strength of the Ce‐nanosilica/polysulfone composite membranes. The CexSi1–xO2–δ samples were characterized by Fourier transform infrared spectra, X‐ray diffraction...
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