Abstract:
The development of a country is directly related to increase in industrial development
which has an impact on environmental pollution, one of which is water pollution caused
by dye waste. Efforts to minimize dye waste can be done using the Fenton-like method.
MnO2 is one of the catalysts that is widely used in the Fenton-like method due to its
large surface area. This study aims to synthesize the MnO2/SiO2 composite catalyst for
the degradation of methylene blue (MB). The composite synthetic composite method
was carried out using the sol-gel method by reacting KMnO, glucose and SiO2 with the
one-step sol-gel method. The results of the X-ray Diffraction (XRD) characterization
was generated with that the cryptomelane-type manganese oxide catalyst showed the
presence of SiO2 and MnO2. Methylene blue degradation at 60 ppm methylene blue
concentration, 15 mL H2O2 volume and 100 mg composite mass, the most influential
in the degradation of methylene blue is the total mass of the composite with a
degradation percentage of 39.56% in 120 minutes. The catalytic test indicated that the
composite was able to decompose MB up to 39,56%.