Synergistic effects play a crucial role in improving the catalytic activity of enzyme-like reactions. The preparation of hybrid nanomaterials for enzyme mimicking that display synergistic enhanced catalytic activity remains a formidable challenge. Titanium dioxide (TiO)/molybdenum disulfide (MoS) core-shell hybrid nanofibers were synthesized as efficient peroxidase mimics via a three-step approach involving electrospinning, calcination, and hydrothermal treatment. The resulting TiO/MoS hybrid nanofibers exhibited synergistically enhanced peroxidase-like catalytic activity relative to the TiO nanofibers or MoS nanosheets alone. Based on the high peroxidase-like activity of the TiO/MoS hybrid nanofibers, a simple colorimetric approach for the detection of l-glutathione (GSH) was developed, with a detection limit as low as 0.05 μM. This study provides a simple and sensitive sensing platform for the detection of GSH, with prospective applications in colorimetric sensing, environmental monitoring, and medical diagnosis.
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