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A hard template method is used to prepare porous gold‐doped cerium and cobalt oxide (Au‐CexCoy) materials. A series of 3D Au‐CexCoy/graphene aerogel (GA) composites is then fabricated by a facile heating method. The obtained catalysts possess a well‐defined structure of ordered arrays of nanotubes and good performance in formaldehyde (HCHO) oxidation. The composition and surface elemental valence...
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