Highly-sensitive colorimetric detection of H2O2 based on the Pt@Te nanorods

• The Pt@Te NRs were reported by a redox galvanic replacement reaction.
• The catalytic activity is studied by catalyzing the oxidation of ABTS with H2O2.
• High catalytic activity of Pt@Te will open up potential in fuel-cell applications.

Te nanorods (NRs) were prepared from TeO2 in the presence of hydrazine hydrate without using any surfactants under ambient conditions. Te NRs were then used as sacrificial templates to prepare Pt@Te NRs by spontaneous redox galvanic replacement between Te and Pt ions. The as-synthesized Pt@Te NRs exhibit a strong catalytic activity for the colorimetric detection of H2O2 using 2, 2′-azino-bis (3-ethylbenzo-thiazoline-6-sulfonic acid) diammonium salt (ABTS) as an indicator.

The catalytic activity of the Pt@Te NRs synthesized by spontaneous redox galvanic replacement between Te and Pt ions was reported for the colorimetric detection of H2O2 using ABTS as an indicator.Figure optionsDownload as PowerPoint slide