【摘要】 通过水杨醛（salicylideimine,SA）与四乙烯五胺（tetraethylenepentamine,TEPA）缩合反应合成了四乙烯五胺水杨醛亚胺席夫碱配体ST [ST=N, N’-tetraethylenepentaminebis（salicylideimine）],进一步与铁（Ⅲ）配位得到双核铁（Ⅲ）配合物[Fe₂（ST）（H₂O）₄]Cl₄[简写为Fe₂（ST）]。通过元素分析（EA）、红外光谱（FTIR）、紫外可见光谱（UV-Vis）等手段对其进行了表征。以其为催化剂,考察了在双氧水作用下,可见光降解水中新型环境污染物酞酸丁酯（DBP）的性能。结果表明,pH在3.5～8.0范围内,Fe₂（ST）的浓度大于5.5 mmol/L,H₂O₂的浓度大于8.2 mmol/L,10 min内催化体系可以实现对浓度小于20.0 mg/L的DBP 99%以上的降解。监测了加入H₂O₂前后的反应体系电子光谱随时间的变化,结果表明催化剂的活性位点可能为μ-N桥联的双核Fe（Ⅲ）活性中心,形成了有利于H₂O₂活化的过渡态。催化体系在循环使用10次后,对DBP的降解率仍可达95%。Fe2（ST）是具有优异潜力的水中酞酸丁酯污染物的绿色催化剂。更多还原

【Abstract】 Schiff base ligand(ST = N, N’-tetraethylene pentaminebis（salicylideimine） was prepared by condensation reaction of salicylaldehyde（SA） and tetraethylenepentamine（TEPA）, and further coordinated with iron（Ⅲ） via coordination reaction to form a binuclear iron（Ⅲ） complex, [Fe₂（ST）（H₂ O）₄]Cl₄（abbreviated as Fe₂（ST））. It was characterized by elemental analysis（EA）, Fourier transform infrared spectrometer（FTIR）, and ultraviolet-visible spectroscopy（UV-vis）, etc. It was used as catalyst for the degradation of emerging contaminants, e. g., dibutyl phthalate（DBP） under visible light with hydrogen peroxide solution as oxidant. The results show that at pH 3.5～8.0,with the initial concentration of Fe₂（ST） complex larger than 5.5 mmol/L, and that of H₂O₂ larger than 8.2 mmol/L,the degradation of DBP at initial concentration less than 20.0 mg/L can be reached to almost 99% within 10 minutes. The catalytic reaction system has been monitored by electronic spectrum before or after adding H₂O₂ at different time intervals. The results show the catalytic activity site may be a μ-N-bridged binuclear Fe（Ⅲ） center and a di-Fe（Ⅲ）-H₂O₂ transition-state might be formed. The Fe₂（ST） can be reused after regeneration for at least 10 times with degradation percentage of DBP over 95%. The Fe₂（ST） is a potentially effective and green catalyst for the degradation of DBP.更多还原