Local electrocatalytic induction of sol–gel deposition at Pt nanoparticles

Electrochemically-assisted deposition of sol–gel materials can be locally confined at Pt nanoparticles. Pt nanoparticles have been locally deposited on glassy carbon surfaces by pulse electrodeposition using a droplet cell. Upon applying a potential for electrochemically-assisted deposition, the formed sol–gel film mirrors the region of the glassy carbon surface previously modified with Pt nanoparticles.

Research Highlights►Controlled and local synthesis of composite materials by means of a sequential two-step process. ►Local deposition of sol–gel materials by means of electrocatalytic induction of pH modulation at Pt nanoparticles. ►Droplet cell for localized Pt nanoparticle deposition on glassy carbon.