Fluorinated TiO2 coupling with α-MnO2 nanowires supported on different substrates for photocatalytic VOCs abatement under vacuum ultraviolet irradiation

Photocatalytic Oxidation for Volatile Organic Compounds Elimination: From Fundamental Research to Practical Applications

“…Therefore, substrates are applied to reduce the usage of catalysts and enhance the mass-transfer efficiency, such as glass beads, Ni foam, and honeycomb, which also makes it easier for air pollutant gases to pass through the reactor and have contact with catalysts. 18,70,81,84,99,107 5.4. Monolith Reactor.…”

Recent progresses in the synthesis of MnO2 nanowire and its application in environmental catalysis

“…In addition, the α-MnO 2 @Co 3 O 4 catalyst also exhibited excellent stability and water resistance during the toluene oxidation. 120 Zhang et al 155 found that the fluorine (F)-doped titanium dioxide (TiO 2 ) coupled with a small number of α-MnO 2 nanowires could effectively improve the photocatalytic degradation effect of toluene. Specifically, the toluene degradation efficiency before coupling was about 90%, and the toluene degradation efficiency after coupling was increased to 96%.…”

“…Even though the RH was as high as 50%, the ozone conversion also could reach 70%, well beyond the performance of α-MnO 2 nanofiber. Zhang et al 155 found that introducing α-MnO 2 nanowires into the fluorine (F)-doped titanium dioxide (TiO 2 ) could not only improve the photocatalytic degradation of toluene but also remove almost the total O 3 in the system. As the comparison, only 15.8% of O 3 could be removed by the pristine F–TiO 2 catalyst without mixing with α-MnO 2 .…”

High-Efficiency Wastewater Purification System Based on Coupled Photoelectric–Catalytic Action Provided by Triboelectric Nanogenerator

“…Solar energy can stimulate catalysts to generate photoelectron holes and produce active radicals ( • OH, • O 2 − ), which can destroy or oxidate organic matters [14][15][16]. Howbeit, due to the low solar energy utilization associated with easy recombination of e − -h + pairs, the degradation efficiency of photocatalyst is limited [17][18][19]. Most important, the solar energy is not always available in environment, which makes photocatalystic degradation is not occur in the darkness.…”