Fig. 7From: Facile synthesis of surface-functionalized magnetic nanocomposites for effectively selective adsorption of cationic dyesEffect of initial pH on the removal of cationic dyes on Fe3O4/PCC MNPs the temperature is 30 °C. As shown as Fig. 7, the blank line represent that the solution pH is 3.0, the red line reperesent that the solution pH is 6.0, and the blue line represent that the solution pH is 9.0Back to article page