合成了μ?水桥联的双核铁（Ⅲ）配合物[ Fe2（μ?H2 O）（ TS）4（ H2 O）2]2 Cl4·4H2 O]（μ?H2 O?Fe（Ⅲ）?TS）（ TS＝N，N′?triethylentetramine?salicylideimine；即三乙烯四胺水杨醛亚胺），并以其为催化剂、通过类Fenton反应考察了其对邻苯二甲酸二丁酯（DBP）的催化降解性质．结果表明，μ?H2O?Fe（Ⅲ）?TS在可见光条件下即可对DBP进行高效催化降解．采用UV?vis谱监测了μ?H2 O?Fe（Ⅲ）／DBP／可见光体系在加入H2 O2前后不同时间的光谱，结果表明催化剂的活性位点可能为 Fe （Ⅲ）?H2 O?Fe （Ⅲ）中心，形成了有利于 H2 O2活化的Fe（Ⅲ）?H2 O?Fe（Ⅲ）?H2 O2过渡态，使得·OH可以在可见光作用下便可产生．降解实验研究表明，在pH值3．0—8．0范围内，μ?H2O?Fe（Ⅲ）?TS的浓度为1．16—11．56μmol·L－1， H2O2的浓度为0．408—40．8 mmol·L－1，μ?H2 O?Fe（Ⅲ）?TS／H2 O2／可见光体系均能在5 min内对浓度为14．39—143．88μmol·L－1的DBP实现近100％降解，较普通Fenton反应体系有更宽的pH适用范围．μ?H2 O?Fe（Ⅲ）?TS可循环使用，是有优异潜力的水中DBP绿色降解催化剂．
Synthesis and characterization of μ?H2 O?bridged bi?nuclear Fe (Ⅲ) complex, [ Fe2(μ?H2 O) ( TS) 4( H2 O) 2 ] 2 Cl4·4H2 O (μ?H2 O?Fe(Ⅲ)?TS) ( TS = N, N′? triethylentetramine?salicylideimine) and its catalytic performance on the degradation of dibutyl phthalate ( DBP ) were reported. The results showed that μ?H2 O?Fe(Ⅲ)?TS could be used for catalytic degradation of DBP via Fenton?like reaction under visible light. The μ?H2 O?Fe(Ⅲ)?TS/DBP system was monitored by UV?Vis spectroscopy before or after adding H2 O2 at different time intervals. The result showed the catalytic activity site may be the Fe(Ⅲ)?H2 O?Fe(Ⅲ) unit of the μ?H2 O?Fe(Ⅲ) complex. Mechanistic study indicated that the Fe(Ⅲ)?H2 O?Fe(Ⅲ)?H2 O2 transition?state might be formed, which was favorable to the activation of H2 O2 and production of ·OH under visible light, subsequently. At pH 3. 0—8. 0, with the initial concentration of μ?H2 O?Fe (Ⅲ)?TS complex at 1.16—11.56μmol·L-1 and H2 O2 at 0.408—40.8 mmol·L-1 , the degradation rate of DBP with initial concentration at 14.39—143.88μmol·L-1 DBP reached almost 100% under theμ?H2 O?Fe(Ⅲ)?TS/H2 O2/vis system within 5 min, which showed a wider pH range than that of normal Fenton system. It is a potentially effective and reusable catalytic system for the degradation of DBP .
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