Research Article

Porous Methyltrimethoxysilane Coated Nanoscale-Hydroxyapatite for Removing Lead Ions from Aqueous Solutions

Figure 3

SEM micrographs of hydroxyapatite coated with methyltrimethoxysilane (MTHAp) before and after the reaction with a solution containing 950 mg of Pb/L at pH 5 (PbMTHAp_5) and pH 3 (PbMTHAp_3).
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361061.fig.003b
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361061.fig.003c
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