Angewandte Chemie International Edition · 2017 · 410 citations · 33 references
EngineeringBiotechnologyChemical EngineeringBiocatalysisCatalysisEnzymologyBioelectrochemical SystemsCatalytic MechanismsEnzymatic BiosensorsEnzyme ImmobilizationEnzyme-based BiosensorsRedox EnzymesArtificial Enzyme CatalysisColorimetric SensorsGlucose BiosensorsGlucose OxidaseGlucose SensorsNanomaterial-modified ElectrodesNanoparticle-based ImmobilizationOxygen Reduction Reaction
We report a facile approach to prepare an artificial enzyme system for tandem catalysis. NiPd hollow nanoparticles and glucose oxidase (GOx) were simultaneously immobilized on the zeolitic imidazolate framework 8 (ZIF-8) via a co-precipitation method. The as-prepared GOx@ZIF-8(NiPd) nanoflower not only exhibited the peroxidase-like activity of NiPd hollow nanoparticles but also maintained the enzymatic activity of GOx. A colorimetric sensor for rapid detection of glucose was realized through the GOx@ZIF-8(NiPd) based multi-enzyme system. Moreover, the GOx@ZIF-8(NiPd) modified electrode showed good bioactivity of GOx and high electrocatalytic activity for the oxygen reduction reaction (ORR), which could also be used for electrochemical detection of glucose.
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