Decomposition of the Methylene Blue Dye Using Layered Manganese Oxide Materials Synthesized by Solid State Reactions

Figure 1

X-ray patterns for birnessites synthesized at 400°C and 800°C: (a) materials at 1°C/min heating rate, (b) zoom between 30° and 70° (2θ) for the materials at 1°C/min heating rate, (c) materials at 10°C/min heating rate, and (d) zoom between 30° and 70° (2θ) for the materials at 10°C/min heating rate.

(a)

(b)

(c)

(d)