Heterogeneous photocatalysis: Light-matter interaction and chemical effects in quantum efficiency calculations

Interface Effects in Sunlight-Driven Ag/g-C3N4 Composite Catalysts: Study of the Toluene Photodegradation Quantum Efficiency

“…17, 26,32,[34][35][36][37][38][39] Although the details of the mechanism are unknown, the degradation is well established to be produced by hole-related hydroxyl radicals as active oxidative species in photocatalysts. 26,36,[40][41][42] Using this information we provided a general framework for analyzing the number of hydroxyl radicals consumed in the formation of benzaldehyde and carbon dioxide, the only products detected at the gas phase in our experiments.…”

“…26,36,[40][41][42] Using this information we provided a general framework for analyzing the number of hydroxyl radicals consumed in the formation of benzaldehyde and carbon dioxide, the only products detected at the gas phase in our experiments. 32 The balance of oxygen, hydrogen and charge species The local superficial rate of photon absorption is defined by Equation 5. Where ‫ܨ‬ ௦ is the fraction of light absorbed by the sample and ‫ݍ‬ ௦௨ the radiation flux at each position (x,y,z) of the catalytic film (See details in Supporting information).…”

Surface CuO, Bi2O3, and CeO2 Species Supported in TiO2-Anatase: Study of Interface Effects in Toluene Photodegradation Quantum Efficiency

“…53 This observable measures the average distance or path the light goes through the solid, as mathematically described in Equation 3.…”

“…47 As described in recent works, this requires the accurate measurement of the catalytic surface illuminated and thus catalytically active under illumination, the light handling properties of the whole (reactor+catalyst) system to calculate the net radiation flow at the catalyst´ surface, as well as the catalytic properties including both activity and selectivity to obtain the number of reacting molecules as well as the number of charge species (and in turn photons) involved in the reaction. 3,[48][49][50][51][52][53] The whole procedure demands thus for a careful physico-chemical characterization of the materials as well as the careful analysis of their photochemical response under illumination conditions. In this contribution we will attempt to carry out such study in these three CuO-TiO2, CeO2-TiO2, and Bi2O3-TiO2 systems as a function of the surface sensitizer concentration.…”

Immobilized particle coating for optimum photon and TiO 2 utilization in scaled air treatment photo reactors

“…The evaluation of absorbed photons is of high relevance for adequate reaction modeling and photoreactor design [17]. This task which is at times challenging, is seldom adopted by researchers with a few exceptions [18,19].…”