Abstract

AbstractMnO2 materials were facilely prepared via the rapid redox reactions of KMnO4 and H2O2 in acidic medium, which exhibit the significant improvement of catalytic activity in the degradation of gaseous toluene compared to commercial MnO2. It was found that the molar ratio of H2O2/KMnO4 has a great influence on the crystalline phase, morphology and average oxidation state of the as‐prepared MnO2. The 3‐MnO2 sample prepared by using three equivalents of stoichiometric H2O2 displays the best catalytic activity for the total combustion of toluene (concentration is up to 1000 ppm) at 300 oC. The mechanism of the influence of different H2O2 addition amount has also been discussed by catalytic performance and nature of materials.

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