Pd nanoparticles as a plasmonic material: synthesis, optical properties and applications

Abstract

This review provides an overview of current progress into Pd nanoparticles supporting localized surface plasmon resonance and their applications. We begin by analyzing briefly the optical properties of Pd putting...

Tunable Selectivity in CO2 Photo‐Thermal Reduction by Perovskite‐Supported Pd Nanoparticles

“…Upon increasing light intensity (and so reaction temperature), the thermal contribution is more favored and clearly becomes predominant at temperatures above 200 °C. We hypothesize that the preeminent photo‐enhancement at temperatures below 200 °C derives mainly from the excitation of electron‐hole pairs in BTO together with the generation of hot electrons in Pd NPs [20] . These hot electrons arise from both LSPR and/or interband transitions in Pd NPs under UV and visible‐IR radiation [10b,d,e,21] …”

Plasmonic Hydrogen Sensors

“…Pd has been proven to be a good candidate because it supports good hydrogen absorption under normal temperature and pressure (Figure 4a), while still possessing considerable plasmonic properties. [95,96] Langhammer et al first used Pd nanodisks for direct LSPR sensors in 2007. [53] Pressure-LSPRresponse isotherms were observed and obeyed Sievert's law in the low-pressure range, exhibiting a characteristic "plateau" at 18 Torr upon hydrogen charging and 7.5 Torr upon hydrogen discharging.…”

Hierarchical hollow metal nanostructure arrays for selective CO2 conversion

“…2 For example, it has been previously demonstrated that the surface plasmon properties for Ag nanostructures can be tuned based on the void size, 2 making such nanostructures promising for a variety of applications including sensing, plasmon enhanced solar cells, Surface Enhanced Raman Spectroscopy (SERS) and photocatalysis. 2,41,42…”

“…Furthermore, although only Cu hollow nanostructures were investigated for electrocatalysis in this work, hollow metal nanostructures including Ni, Ag, and Pd have many other potential applications, owing to their ability to generate surface plasmon resonance 2. For example, it has been previously demonstrated that the surface plasmon properties for Ag nanostructures can be tuned based on the void size, 2 making such nanostructures promising for a variety of applications including sensing, plasmon enhanced solar cells, Surface Enhanced Raman Spectroscopy (SERS) and photocatalysis 2,41,42. In summary, a templating technique for fabricating aligned and self-supporting arrays of hollow metal nanostructures was developed.…”