Advances in thermocatalytic and photocatalytic techniques for the room/low temperature oxidative removal of formaldehyde in air

Heterojunction photocatalysts for degradation of the tetracycline antibiotic: a review

“…Researchers have suggested using quantum efficiency as an elaborated index for assessing the performances of different photocatalytic systems for comparison purposes (Anwer and Park 2018 ; Younis et al 2020 ). Recently, quantum efficiency has generally become one of the preferred performance metrics for removing various organic pollutants from water environments using photocatalytic materials (Rajput et al 2021 ; Vellingiri et al 2020 ). Quantum efficiency is defined as the per unit amount of absorbed photons used to effectively decompose the molecular number of pollutants (Vikrant et al 2020 ).…”

Adsorption and photocatalytic degradation of gas-phase UDMH under simulated sunlight by AgBr/TiO2/rGA

“…12, the UDMH conversion of AgBr/TiO 2 /rGA is higher in the simulated sunlight than that in the dark. It is worth considering that the catalytic reaction is photocatalysis or a thermocatalytic process, 44,45 which is initiated by hot electrons under light or phonons produced by hot electrons. The photothermal experiment of AgBr/TiO 2 /rGA was studied by an IR thermal camera, as depicted in Fig.…”

Volatile Organic Compounds (VOCs) Removal from Indoor Air by Heterostructures/Composites/Doped Photocatalysts: A Mini-Review

“…Under irradiation (step 2, Figure 1 ), the p-n heterostructure system generates charge carriers (e − and h + ) which move toward the surface and support (step 3, Figure 2 ) the formation of oxidative (•OH) or superoxidative (•O 2 − ) species. Pollutant molecules subsequently adsorb and diffuse into the catalyst pores (step 4, Figure 3 ), where they react with highly reactive radical species and form compounds with lower molecular weights (H 2 O, CO 2 and other intermediate products) [ 33 , 34 , 35 ].…”