• Manganese dioxide (MnO2): A well-known and highly effective catalyst 2 for the decomposition of H₂O₂. It is often used in practical demonstrations to display catalytic activity due to its strong catalytic effect. 3 • Lead dioxide (PbO2): Another catalyst that can accelerate the decomposition of H2O2. While effective, it is less commonly used than MnO₂. 4 • Iron(II) oxide (Fe2O3): Also acts as a catalyst for H₂O₂ decomposition, but it is generally less effective compared to MnO₂ and PbO2. Temperature in the context of catalysts, is a crucial factor that influences the rate of chemical reactions.