Abstract
Introduction: It is well known, that titanium dioxide (TiO2) nanoparticles can lead to the generation of reactive oxygen species (ROS) upon photoexcitation. Method: In this work, we investigated mesoporous surfaces based on TiO2 nanoparticles doped with 0.6-0.7% manganese (Mn), which showed reduced photoactivity and were based on the more stable rutile polymorph of titania. Result: In particular, we showed spectrophotometrically that the enzyme glucose oxidase (GOD) can be successfully adsorbed up to 80% while retaining its bioactivity in contact with the TiO2:Mn-based surface. Conclusion: We propose that this study could potentially give rise to biocompatible surfaces for biosensing applications.
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