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

Table 1

Physicochemical parameters and structural formulas of the synthesized materials.

Material	K/Mn	AOS^a	Mn^4+	Mn^3+	Structural formula	Crystal size (nm)	σ′(ω) at 0.1 Hz (μS)	σ′(ω) at 7.94 MHz (μS)
4R1	0.20	3.85	0.85	0.15		14	5.64	21.60
8R1	0.23	3.82	0.82	0.18		117	2.41	16.40
4R10	0.21	3.89	0.89	0.11		9	13.60	41.20
8R10	0.20	3.82	0.82	0.18		67	1.10	12.90

^aAverage oxidation state of Mn.