The Effect of KMnO4 Concentration on the Catalytic Activity of MnOx/Luffa Sponge Composites

MnOx/ luffa sponge composites were prepared by loading MnOx on/in porous luffa sponge under ambient conditions and an in-situ reduction method. We employed the oxidative decomposition of HCHO as probe reaction to investigate the effect of KMnO4 concentration on the catalytic activity of MnOx/ luffa sponge composites. It is shown that all the MnOx/ luffa sponge composites bear the activity for the catalytic decomposition of HCHO; the conversion of HCHO was found to be high at room temperature; the conversion level of HCHO was first increased and then decreased with the increase in the KMnO4 concentration. The HCHO conversion over the catalyst prepared from 10 g/L of KMnO4 solution was the largest among five catalysts.