| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 594550 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2011 | 5 Pages |
NH2+ ions implantation was performed at energy of 80 keV with the ion dose of 5.0 × 1015 ions cm−2 for indium tin oxide (ITO) electrode, which formed a new electrode NH2/ITO. And then the electrode was immersed into the platinum nanoparticles (PtNPs) solution, in which PtNPs were successfully attached to the surface of NH2/ITO electrode through the strong electrostatic attraction formed between PtNPs and the NH2/ITO surface, resulting platinum nanoparticles-attached NH2+ ions implantation-modified ITO (PtNPs/NH2/ITO) electrode. Results of X-ray photoelectron spectra (XPS) and the water contact angle (WCA) measurements showed that the implanted NH2+ ions existed on the NH2/ITO surface. Scanning electron microscopy (SEM) analysis indicated that the attachment of PtNPs to ITO surface was improved after NH2+ ions implantation. Cyclic voltammetric measurements were carried out to investigate the electrochemical performance of the PtNPs/NH2/ITO electrode. It was found that the PtNPs/NH2/ITO electrode showed high electrochemical activities and displayed good electrocatalytic oxidation response to methanol. Therefore, the modified electrode could be applicable to be the sensor for detecting methanol.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Amino groups can be introduced to the ITO surface by NH2+ ions implantation without using binder molecules. ► The NH2/ITO can offer a favorable substrate for the attachment of PtNPs with higher surface density. ► PtNPs/NH2/ITO electrode owned high electrochemical activities and good electrocatalytic oxidation of methanol.
