Abstract: Activated carbon fibers (ACF) supported platinum (Pt) catalyst (Pt/ACF) was prepared by chemical reduction method with sodium borohydride, characterized by Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray Diffraction (XRD) and nitrogen isothermal adsorption. The catalytic activity of Pt/ACF on formaldehyde in solution was investigated. The experimental results indicated that Pt/ACF had excellent catalytic activity, and the removal rate for formaldehyde was more than 96.5 % in 9 hours, mineralized to carbon dioxide. Pt/ACF could be recycled. Pt/ACF can efficiently purify the formaldehyde at room temperature, which could be mineralized to carbon dioxide.

Key words: catalytic oxidation, platinum, activated carbon fiber, formaldehyde