Photoinduced electron transfer and photodegradation of malonic acid at Au/TiO2 investigated by in situ ATR-IR spectroscopy

A mild synthetic route to Fe3O4@TiO2-Au composites: preparation, characterization and photocatalytic activity

“…The peaks located at 83.8 and 87.5 eV correspond to Au 0 4f 7/2 and Au 0 4f 5/2 , respectively. These results are consistent with the emission of 4f photoelectrons from zero-valent Au 0 [15,[39][40][41], which indicates that the Ag NPs deposited on the surface of the Fe 3 O 4 @TiO 2 spheres exist as metallic Au.…”

Comparison of radical-driven technologies applied for paraben mixture degradation: mechanism, biodegradability, toxicity and cost assessment

“…However, under visible range, the enhancement is strongly related with LSPR and Schottky barrier (Wysocka et al 2018;Borowska et al 2019). Moreover, the electron transfer through the noble metal/TiO 2 interface under a wide range (UVA and visible) occurred (Hu and Bürgi 2012). The differences between ozone-based or hydrogen peroxide-based AOP and photocatalysis with semiconductors modified by noble metals indicate that photodegradation can be attributed not only to • OH radicals but also to other forms of reactive oxygen species (ROS) O • À 2 , 1 O 2 and H 2 O 2 or e cb − and h + (Wysocka et al 2018).…”

Sailing into uncharted waters: recent advances in the in situ monitoring of catalytic processes in aqueous environments

“…In situ ATR-IR studies during the past few years mainly addressed three types of systems pertaining to aqueous phase catalysis: catalytic upgrading of biomass-derived oxygenates, 3,4,29,30 electrocatalytic conversion of small organic molecules, 14,31,32 and photocatalytic decomposition or oxidation of organics in water. [33][34][35] These studies focused on in situ changes in either surface adsorbed species or functional groups during chemical transformations in liquid water. Most examples used catalyst-coated IRE; therefore, monitored adsorption/reaction at the catalystsolution interface in the μm scale.…”