Synthesis and Characterization of Hybrid-Magnetic Nanoparticles and Their Application for Removal of Arsenic from Groundwater

Figure 2

Zeta potentials of purified (■) and oxidized MWCNTs with HNO₃ (♦); 3N + 1S (X); KMnO₄ (▲); NaOCl (*), under various pH.