Surface modification of indium tin oxide films with NH2+ ion implantation: Surface properties and gold nanoparticles attachment

✍ Scribed by Shuoqi Li; Li Li; Chenyao Liu; Jiao Jiao; Ji Xia; Jingbo Hu; Qilong Li

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 843 KB
• Volume: 204
• Category: Article
• ISSN: 0257-8972
• DOI: 10.1016/j.surfcoat.2010.02.042

✦ Synopsis

NH 2 + ion implantation was performed at the energy of 80 keV with fluence of 2 × 10 16 ions•cm -2 for indium tin oxide (ITO) film coated glass, and the existence of amino group on the ITO surface was verified by Fourier transform infrared (FT-IR) spectra and X-ray photoelectron spectroscopy (XPS) analysis. The gold nanoparticles (AuNPs) have been fabricated on the surface of the obtained NH 2 + ions implantation-modified ITO (NH 2 /ITO) film, resulting gold nanoparticles-attached NH 2 + ions implantation-modified ITO (AuNPs/NH 2 /ITO) substrate. This ion implantation approach provides a useful strategy to attach AuNPs on the ITO surface with higher density without using certain organic binding molecules. Cyclic voltammtric results indicate that the AuNPs/NH 2 /ITO electrode shows excellent electrochemical properties, and thus this material is expected to have widely potential applications in electrochemical analysis and biosensors.