Inter-particle charge transfer in TiO2-phytate films: Generator–collector gold–gold junction transients

Photoelectrochemical Transients for Chlorine/Hypochlorite Formation at “Roll-On” Nano-WO3 Film Electrodes

“…Aggregates and films of semiconductor nanoparticles provide extremely high surface area with improved contact between solid and liquid phase, for example, for photoelectrolytic devices. In the limiting case of weakly interacting nanoparticle aggregates, the properties of these assembled surfaces may be considered similar to "molecular assemblies" 1 with slow interparticle hopping of charge carriers. In contrast to this, annealing and sintering leads to a stronger interaction between particles and a more continuous solid phase "backbone" with properties of aggregates approaching those of the limiting case of a flat surface (or single crystal semiconductor).…”

Redox reactivity at silver microparticle—glassy carbon contacts under a coating of polymer of intrinsic microporosity (PIM)

“…Brownian motion of objects at liquid/solid interfaces can affect the rate of physical processes such as electron transfer, but these effects require micron-sized particles to become apparent. The idea of BBrownian activation^has been postulated previously for example for the inter-nanoparticle electron transfer within hybrid films of redox active TiO 2 nanoparticles [29]. Related effects of Brownian motion at liquid/solid interfaces may also play a role in the voltammetry of Bimpact^processes [30,31] where stochastic effects are assigned to bulk transport (motion) rather than to surface processes (activation).…”

A fast response & recovery H2S gas sensor based on α-Fe2O3 nanoparticles with ppb level detection limit

“…Once the sensor is placed in the presence of H 2 S gas, the surface reaction between the absorbed oxygen species and H 2 S molecules will release electrons. In this process, some of these released electrons will return to the conductor band, and others will hop into the contact barrier area, which reduces the width of the contact barrier, resulting in the decrease of contact resistance between the overlapped particles [38,39]. 16 …”