Formaldehyde (HCHO) is regarded as a major indoor pollutant emitted from buildings, furnishing materials and consumer products. Considerable efforts have been made to reduce the indoor emission of HCHO for satisfying the stringent environmental regulations. As one of the most attractive approach, low-temperature catalytic oxidation of HCHO to CO2 and H2O has received considerable attentions [1–9]. Among the tested catalysts, noble metal catalysts exhibit relatively high catalytic activity at low temperatures. Especially, significant progresses on improving the low temperature activity of HCHO oxidation have been made recently over a few kinds of supported Pt catalysts [1,5–7,9]. For the supported noble-metal catalysts, the nature of supports is one of the key factors affecting their catalytic performance although the concreted role of supports is still under debate [10– 13]. So far only a few reducible metal oxides, such as TiO2, MnO2–CeO2 and Fe2O3, have been reported to be suitable supports to prepare highly active Pt-based catalysts for low-temperature