Heterogeneous Photocatalysis

Abstract

Heterogeneous photocatalysis is a subtype of catalysis that refers to chemical processes catalysed by a semiconductor solid under proper illumination conditions [...]

Efficient Photocatalytic Dye Degradation and Bacterial Inactivation by Graphitic Carbon Nitride and Starch-Doped Magnesium Hydroxide Nanostructures

“…In general, photocatalysis involves adsorption–desorption, e – h + pair production, electron pair recombination, and chemical reaction. , The possible mechanism was described as follows to determine the degradation performance of Mg­(OH) 2 NPs and the impact of ROS on the degradation of MB dye. PCA begins with irradiation of photon energy ( h ν ≥ E g ) to excite electrons (e – ) from the lower VB to the upper CB, leaving behind a hole (h + ) in the VB (Figure ).…”

Toward efficient dye degradation and the bactericidal behavior of Mo-doped La2O3 nanostructures

“…Photocatalytic degradation entails numerous processes, including adsorption–desorption, electron–hole pair formation, electron pair recombination, and chemical reaction. 51,52 The PCA begins with photoexcitation, which is initiated by photons processing energy equal to or more than the material band gap energy ( E g ). These photons stimulate valence/lower band (VB) electrons, causing them to move to the conduction/higher band (CB).…”

Continuous air purification by front flow photocatalytic reactor: Modelling of the influence of mass transfer step under simulated real conditions

“…This kinetic model will consider the surface reaction and mass transfer step. The degradation kinetics of monocomponents in heterogeneous photocatalytic treatments is often represented by the Langmuir -Hinshelwood model (Queffeulou et al, 2010;Assadi et al, 2015;Muñoz-Batista and Luque, 2021) Firstly, the aerodynamic conditions of the P50 reactor have to be determined. A residence time distribution (RTD) experiment was performed.…”