Controlling the size and pattern pitch of ni(OH)2nanoclusters using dip-pen nanolithography to improve water oxidation

Abstract

We use dip-pen nanolithography to accurately pattern Ni(OH)2nanoclusters on a metachemical surface with an exceptionally large surface area. The distance between the nanoclusters can be manipulated to control the oxygen-evolution reaction current and overpotential, thereby improving the efficiency of the water-splitting process while using minute amounts of the catalyst.