Green fabrication of Pt nanoparticles via tea-polyphenols for hydrogen peroxide detection

To address the environmental hazards associated with traditional chemicals in fabricating metal nanoparticles , greener synthetic method using plant-derived material would be a good choice. In this study, platinum nanoparticles (Pt NPs) were greenly fabricated by tea polyphenol (Tp) and applied in hydrogen peroxide (H 2 O 2 ) detection. As-prepared Pt NPs have been characterized by a series of analysis. Physical characterizations show the presence of Pt NPs whose size are about 2.7 ± 0.5 nm and very homogeneous. The electrochemical results show that, as-obtained Pt NPs by Tp (Tp-R-Pt) exhibit good anti-interference, quite a long-term stability and high sensitivity (9.1 μA mM −1 cm −2 ), and it could detect H 2 O 2 without any additional mediator or enzyme. This work would play a positive role in the development of ‘green’ fabrication pattern of nanomaterials using natural resources.