Co/MOF-808(Zr)复合材料的制备及其对有机磷化合物的降解性能  

Preparation of Co/MOF-808(Zr) composites and their properties for degrading organophosphorus compounds

作　　者：黄艳凤[1] 焦克楠 王晓荣 潘杰[1] 万冬[1] HUANG Yanfeng;JIAO Kenan;WANG Xiaorong;PAN Jie;WAN Dong(School of Chemical Engineering and Technology,Tiangong University,Tianjin 3000387,China)

机构地区：[1]天津工业大学化学工程与技术学院,天津300387

出　　处：《天津工业大学学报》2024年第1期50-55,共6页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(22178270,22078246)。

摘　　要：为了解决普通单金属MOFs材料几乎不能直接将双(4-硝基苯)磷酸酯(BNPP)直接降解为毒性更低的对氨基苯酚(4-AP)的问题,通过油浴法制备出MOF-808(Zr)后,采用后修饰法将草酸钴负载于MOF-808(Zr)上,制备出Co/MOF-808(Zr)复合材料,并对所制材料进行XRD和TEM表征。结果表明:MOF-808(Zr)具有高晶体结构稳定性,Co/MOF-808(Zr)的粒径在250 nm左右且分布均匀;Co/MOF-808(Zr)通过级联反应成功将有机磷神经毒剂模拟物BNPP直接降解为毒性更低的4-AP,而非一般的毒性较高的降解产物对硝基苯酚(4-NP)。其最佳级联降解反应条件为:温度45℃,Co/MOF-808(Zr)剂量为2 mg/mL,底物BNPP为0.6 mmol/L,硼氢化钠0.06 mmol/L。实践得出,Co/MOF-808(Zr)在将有机磷化合物直接降解为毒性更低的4-AP方面表现出良好的应用潜力。In order to solve the problem that ordinary monometallic MOFs cannot directly degrade bis(4-nitrobenzene)phosphate(BNPP) to p-aminophenol(4-AP) with lower toxicity,MOF-808(Zr) was prepared by oil bath,Co/MOF-808( Zr) composites were prepared by loading coba lt oxalate on MOF-808( Zr) by post-modifica tion method.XRD and TEM characterization of the prepared materials showed that MOF-808(Zr)had high crystal str ucture stability,and the particle size of Co/MOF-808(Zr) was about 250 nm and evenly distributed.Co/MOF-808(Zr) successfully degraded organo-phosphorus neuroagent mimic BNPP directly to less toxic 4-AP by cascade reaction,instead of the general higher toxicity degradation product p-nitrophenol(4-NP).The optimal cascade de gradation conditions were as follows:reaction temperature 45 ℃,Co/MOF-808(Zr)dose of 2 mg/mL,substrate BNPP of 0.6 mmol/L,sodium borohydride 0.06 mmol/L.Co/MOF-808(Zr)shows good application potential in directly degrading organophosphorus compounds to less toxic 4-AP.

关 键 词：Co/MOF-808(Zr) 级联反应 水解BNPP 氢化4-NP 有机磷化合物 降解 

分 类 号：TQ426.64[化学工程]