Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

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Determination of the Zero Point Charge (PZC) and the Isoelectronic Point (IEP) of the Iron Hydroxide

Author(s): Mhamed Hmamou*, Fatima Ezzahra Maarouf, Siham Lhimer, Hind Khalil

Throughout this work, we have studied the surface chemistry of iron ferric hydroxide Fe(OH)3 by the potentiometric method, allowing the
monitoring of the pH evolution of colloidal suspensions as a function of contact time, pH=f (Tct).
Indeed, two techniques were chosen, namely, the variable mass potentiometric titration (PMT) and variable time potentiometric titration (PTT).
This study shows the values of the two parameters PZC=7.45 and IEP=7.65


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