Abstract
Graphene oxide (GO) patterns on glass slides are prepared by microcontact printing, on which silver films are produced in situ through a straightforward one-step chemical method in aqueous silver nitrate solution at 60 °C, using glucose as a reductant. The obtained silver films are uniform and well-shaped, which are investigated by optical microscopy, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. The surface-enhanced Raman scattering phenomena of the GO pattern resulting from the silver film give more hyperfine structural characteristics. Using the silver film as a reducing pattern, gold nanoparticles on GO patterns are obtained by simply immersing the silver pattern in a HAuCl4 solution. Our method is a convenient and ecofriendly approach to produce well-shaped silver or other metal nanoparticle patterns on different substrates.
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