FeO as artificial enzymes (nanoenzymes) was found to possess excellent peroxidase-like activities, due to the relatively high catalytic activity, low cost and good stability. To further improve the peroxidase-like activities of FeO, in the work, ternary FeO@PW@SWNT nanocomposites were successfully prepared by calcinating MIL-101(Fe)@PW to obtain FeO@PW, then loaded by single wall carbon nanotubes (SWNT), and the peroxidase-like activities were evaluated by detecting hydrogen peroxide (HO) and glucose (GLC). Compared with FeO, PW and SWNT, FeO@PW@SWNT nanocomposites exhibit better peroxidase-like properties due to the nature of all components and the best synergistic effect. In addition, the peroxidase-like activities of FeO@PW@SWNT nanocomposites depend largely on the doping quality of PW and SWNT, and the optimized ratio of FeO:PW:SWNT is 4:1:5. Moreover, a sensitive colorimetric detection based on FeO@PW@SWNT-glucose oxidase (GOx)-TMB for GLC was developed with a sensitivity of 0.15 μM.

中文翻译：

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POMOF 衍生的 Fe2O3@P2W18 与 SWNT 纳米复合材料作为葡萄糖比色生物传感器

Fe3O作为人工酶（纳米酶），具有较高的催化活性、较低的成本和良好的稳定性，具有优异的类过氧化物酶活性。为了进一步提高FeO的类过氧化物酶活性，本工作通过煅烧MIL-101(Fe)@PW得到FeO@PW，然后负载单壁碳纳米管(SWNT)，成功制备了三元FeO@PW@SWNT纳米复合材料。 ），并通过检测过氧化氢（H2O）和葡萄糖（GLC）来评估类过氧化物酶活性。与FeO、PW和SWNT相比，FeO@PW@SWNT纳米复合材料由于所有组分的性质和最佳的协同效应而表现出更好的过氧化物酶性质。此外，FeO@PW@SWNT纳米复合材料的类过氧化物酶活性很大程度上取决于PW和SWNT的掺杂质量，FeO:PW:SWNT的优化比例为4:1:5。此外，开发了一种基于 FeO@PW@SWNT-葡萄糖氧化酶（GOx）-TMB 的 GLC 灵敏比色检测，灵敏度为 0.15 μM。