High‐Density Arrays of Platinum Nanostructures and Their Hierarchical Patterns

Abstract

Mesoporous silica templates combined with fast electrochemical deposition provides a means to grow arrays of nanorods 9 nm in diameter and with variable lengths up to a few hundreds of nanometers (see figure). Hierarchical nanostructures of Pt arrays with microscale patterns can be obtained by microcontact printing on the mesoporous silica films.

Facile Fabrication of Platinum-Cobalt Alloy Nanoparticles with Enhanced Electrocatalytic Activity for a Methanol Oxidation Reaction

“…Until now, various physical and chemical synthesis methods of Pt-based alloy NPs have been surveyed, including incipient wetness19, wet impregnation202122, the polyol method23242526, electrochemical deposition272829, the colloidal method303132, and chemical vapor deposition (CVD)163334. However, these methods are subject to intrinsic drawbacks, such as (a) complicated multistep processes, including mixing, precipitation, and cleaning; (b) catalyst poisoning by chemical residues and lack of a “clean” surface; (c) strict conditions required for alloying; and (d) high vacuum sputtering and advanced patterning equipment, similar to the CVD process.…”

Self‐Supported Interconnected Pt Nanoassemblies as Highly Stable Electrocatalysts for Low‐Temperature Fuel Cells

“…carbon black). [19,22,23] Consequently, the many efforts devoted to this area have led to 3D NW superstructures, such as arrays, [24][25][26] networks, [19] and hierarchical structures. [13,17] Nevertheless, most of the reported 1D Pt nanocatalysts are in the form of freestanding nanocrystals, which are similar to the Pt/CB catalyst.…”

Integration Between Template‐Based Nanostructured Surfaces and Biosensors

“…Metal deposition has been accomplished electrochemically in the pores of the membrane, on the side that has been treated with a conductive layer (typically, 100 to 1000 nm) [165][166][167][168][169][170][171][172][173][174][175][176][177][178][179][180][181][182]. This approach is based on the assumption that template membranes are robust enough to tolerate hard treatment, such as plasma or vacuum deposition.…”