Synthesis and H2O2 Detection of POMs Based Metal-organic Framework Compounds
Objective:To design and synthesize POMs based metal-organic crystalline com-pounds,and study their catalytic activity for H2O2,and provide a new approach for the development of new biological small molecule sensors.Method:Hydrothermal synthesis and X-ray single crystal dif-fraction were used to characterize POMs based metal-organic crystalline complexes.And UV-visible spectrophotometry was employed to study the catalytic activity of POMs based metal-organic crystal-line compounds to H2O2.Result:POMs based metal-organic crystalline compound was successfully prepared,and X-ray single diffraction analysis shows that the molecular formula is H4[Cu2(bim)4][SiW12O40]2·8H2O.Studies on enzymatic activity shows that the compound possesses peroxidase-like activity,and the optimal catalytic conditions are pH=3,40 ℃,reaction time of 4 minutes,and the de-tection range for H2O2 is 1~100 µmolL-1 with the detection limit of 0.18 μmolL-1.Conclusion:POMs based metal-organic crystalline compounds exhibit excellent detection performance for biological small molecule sensing,but their types and structures have a certain impact on their catalytic activity,and their structure-activity relationship still needs further in-depth research.