Tribocatalysis mechanisms: electron transfer and transition

Abstract

The differences between the two mechanisms of tribocatalysis are compared, and the selection criteria for a specific reaction are given.

Piezocatalysis: a promising alternative route for CO2 reduction

“…Modulating the motion of a reaction medium can be performed to produce vortex ow as an alternative strain-inducing method either in a continuous ow mode or a batch operation mode (e.g., with magnetic stirring). Some metal oxides, such as Cu 2 O, NiO, Co 3 O 4 , and Fe 3 O 4 , can reduce water into H 2 under vigorous magnetic stirring in the dark at room temperature, 118,119 and hence, they may also be active for CO 2 reduction. Charge polarization can also be created on ZnO by magnetic stirring alone to evolve H 2 through water reduction.…”

“…, with magnetic stirring). Some metal oxides, such as Cu 2 O, NiO, Co 3 O 4 , and Fe 3 O 4 , can reduce water into H 2 under vigorous magnetic stirring in the dark at room temperature, 118,119 and hence, they may also be active for CO 2 reduction. Charge polarization can also be created on ZnO by magnetic stirring alone to evolve H 2 through water reduction.…”

Synergic effect of photocatalysis and tribocatalysis for dye degradation by BaTiO3 ceramics

“…This expansion allows for the potential degradation of organic dye within these systems. 26 In 2019, Li et al made a pioneering contribution to the tribocatalysis process by demonstrating the efficient breakdown of organic dye within a liquid environment through Ba 0.75 Sr 0.25 TiO 3 nanoparticles. 42 Within the interface between PTFE and glass, Ba 0.75 Sr 0.25 TiO 3 nanoparticles absorbed energy as a result of friction between the PTFE and glass surfaces.…”

“…Furthermore, several other factors influence organic pollutant degradation, including the magnitude of the applied force, the contact area between triboelectric materials, the effect of doping, and the introduction of defects in the catalyst. 26 Another significant factor contributing to the organic dye's degradation is the relative surface roughness between the two materials. When two materials come into contact, their atomic distance decreases, leading to an overlap of electron clouds, and the initially symmetrical potential well of the atoms turns into an asymmetrical configuration.…”

“…Tribocatalysis processes can be attributed to two potential mechanisms: electron transition and electron transfer. 26 Also, the combination of both mechanisms is also a plausible means in the tribocatalysis process. It is a well-known fact that the triboelectric effect restricts charge transfer in a humid atmosphere.…”