One-Step Fabrication Of Pd-Embedded Hierarchically Porous Carbon Micro-Spheres For Formaldehyde Removal Under Mild Conditions
NEW JOURNAL OF CHEMISTRY(2021)
Abstract
Micron-sized carbon spheres synthesized via Pickering emulsions have attracted much attention in the last two years. In the present paper, we prepared palladium (Pd) and nitrogen co-embedded carbon microspheres for the formaldehyde (HCHO) catalytic oxidation process since HCHO is usually harmful. The Pd,N co-decorated carbon obtained at 600 degrees C shows higher activity and longer stability for HCHO oxidation at room temperature, compared to the Pd-supported commercial active carbon (Pd/AC) catalyst prepared by traditional wet impregnation method. The key to the good catalytic performance is that the Pickering emulsion droplets provide the confined space for the co-assembly of carbon, nitrogen and metal sources, as well as surfactant with improved interactions, leading to a Pd and N homogeneously modified hierarchically porous structure.
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Key words
formaldehyde removal,one-step,pd-embedded,micro-spheres
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