The Effects and Role of Polyvinylpyrrolidone on the Size and Phase Composition of Iron Oxide Nanoparticles Prepared by a Modified Sol-Gel Method

Table 1

Hematite and maghemite amount (in weight%) and hematite nanoparticle average size for the obtained samples by modified sol-gel method using PVP.

Sample	-Fe2O3 (wt%)	-Fe2O3 (wt%)	Hematite nanoparticles average size (nm)
P6	95	5	43
P12	98	2	40
P18	88	12	31
P24	72	28	29