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From a commercial activated carbon (AC) and six metal oxide (Al2O3, Fe2O3, SnO2, TiO2, WO3 and ZnO) precursors, two series of AC–metal oxide nanocomposites are prepared by wet impregnation, oven-drying at 120°C, and subsequent heat treatment at 200 or 850°C in inert atmosphere. The temperature-dependent dc electrical conductivity of AC and the as-prepared nanocomposites is measured from room temperature...
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