ChemInform Abstract: Synthesis and Anion Exchange of Tunnel Structure Akaganeite.
Abstract
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ChemInform Abstract
β-FeOOH (akaganeite) of high crystallinity is prepared via hydrolysis of FeCl3 in strong acidic solution. A pH value of 1.5 is most favorable for nucleation and growth of akaganeite at 100 °C. Microwave heating accelerates the synthesis (1.5 h). Addition of Mn appears to impede crystallization at low pH but improves it at high pH. The anion exchange of Cl-akaganeite with F-, Br-, and OH- and some properties of different anion-exchanged akaganeites are discussed.
