Preparation of Co/MOF-808(Zr)composites and their properties for degrading organophosphorus compounds
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 cobalt oxalate on MOF-808(Zr)by post-modification method.XRD and TEM characterization of the prepared materials showed that MOF-808(Zr)had high crystal structure 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 degradation 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.
Co/MOF-808(Zr)cascade reactionshydrolysis of BNPPhydrogenated 4-NPorganophosphorus com-poundsdegradation
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