A Novel Catalyst Iron(II) Tetra(1,4-dithin)porphyrazine for Oxygenating Degradation of Organic Pollutants in Aqueous Solutions

An efficient catalyst of the title complex (abbreviated as FePz(dtn)4) is a porphyrin-like complex, which is able to activate molecular oxygen for oxidative degradation of organic compounds in an extensive pH region without light excitation. The experiments indicated that the FePz(dtn)4/O2 system showed an excellent oxygenation capability, in which the Rhodamine B (RhB) was degraded nearly 52% in alkaline aqueous solution in the seven hours and the p-nitrobenzoic acid(NBA) could be also oxygenated nearly 85% detected by UV–vis, HPLC in the similar conditions. The degradation components of RhB and NBA were analyzed by GC–MS and IR. The mineralization rate of RhB and NBA were 12 and 11.1% after reaction for 24 h respectively.