Direct Z-Scheme Oxygen-vacancy-rich TiO2/Ta3N5 heterojunction for degradation of ciprofloxacin under visible light: Degradation pathways and mechanism insight

Recent advances in removal of pharmaceutical pollutants in wastewater using metal oxides and carbonaceous materials as photocatalysts: a review

“…The presence of ciprofloxacin in water acts as pollutant and can be removed by means of a photocatalytic approach. 425–524…”

“…These findings also revealed the active role of oxygen singlets, holes, and superoxide radicals as the main species in the photodegradation of ciprofloxacin. Li et al 505 prepared an oxygen-vacancy-rich TiO 2 /Ta 3 N 5 composite by a solvothermal method and used it as a direct Z-scheme heterojunction photocatalyst. They observed 95.7% (90 min) degradation rate of ciprofloxacin hydrochloride under visible-light irradiation.…”

Visible-Light-Driven Photocatalytic Dehydrogenation of Alcohols on TiO2 via Ligand-to-Metal Charge Transfer for Coproduction of H2 and Aldehydes

“…To broaden the light-absorption range of TiO 2 , some modification methods such as element doping, − semiconductor coupling, − and dye sensitization , have been developed. Besides these popular methods, another promising approach to visible-light activation of wide band-gap TiO 2 is the formation of surface complexation to enable ligand-to-metal charge transfer (LMCT). − In such an approach, organic or inorganic compounds are adsorbed and coordinated to TiO 2 , forming surface complexes and introducing new absorbance bands in the visible-light region, even though the organic or inorganic molecules themselves do not absorb visible light alone.…”

Highly effective ruthenium-doped mesoporous Ti1−xRuxO2−y crystals for photocatalytic tetracycline degradation

“…Among them, TiO 2 with high photocatalytic activity has been intensively investigated. 34,35 Great efforts have been made to increase photon utilization, and optimize the charge dynamics of TiO 2 -based catalysts through doping, morphological control, and the construction of heterojunctions. Wu et al realized the broad photon absorption of TiO 2 through nitrogen doping, leading to a 94.8% degradation efficiency of TC after 120 min.…”