Use of various Fe-modified montmorillonite samples for 4-nitrophenol degradation by H2O2

4-nitrophenol is degraded by H2O2 with iron (III)-exchanged and pillared montmorillonite as catalysts. The influence of different types of catalysts, their amounts and the H2O2 concentration were investigated. imal conditions, a solution containing 10−3 M of 4-nitrophenol and 10−2 M of H2O2 was degraded in less than 6 h in the presence of (1 g/l) of mixed (Al–Fe) pillared montmorillonite (prepared by pillaring montmorillonite with mixed Al and Fe oxides).