Synthesis and Characterization of Magnetic Nanosized Fe₃O₄/MnO₂ Composite Particles

Table 1

Reaction condition for synthesis of Fe₃O₄/MnO₂ composite.

Sample	MnSO4/mol⋅L^−1	V(precipitant)/mL	V(PEG)/mL	Fe3O4/g
(a)	0.072	15(amine)^∗	100	0.5
(b)	0.072	10(amine)^∗	100	0.5
(c)	0.036	10(amine)^∗	100	0.5
(d)	0.036	10(1 mol/L urea)	100	0.5

^*Mass fraction of amine is 25%.