Enhanced degradation of ciprofloxacin by graphitized mesoporous carbon (GMC)-TiO2 nanocomposite: Strong synergy of adsorption-photocatalysis and antibiotics degradation mechanism

Removal of acetylsalicylic acid (ASA) in packed microcolumns with carbon xerogel modified with TiO2 nanoparticles

“…Results obtained from both equilibrium and continuous operation, demonstrate that the CXs could be used as a potential material to remove emerging contaminants such as ASA. Finally, despite experiments were not performed, the incorporation of TiO 2 nanoparticles would allow the subsequent elimination of the contaminant using a process of photodegradation, when exposed to UV or visible light, as shown by many authors in previous works such as Bailón-García et al (2017), Zheng et al (2018) and Ge, Zhang and Park (2019).…”

Electrochemical degradation of ciprofloxacin with a Sb-doped SnO2 electrode: performance, influencing factors and degradation pathways

“…The distance between the two electrodes was 3 cm. Effects of coating times (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20), current density (10-25 mA cm À2 ), electrolyte concentration (10-40 g L À1 ), initial concentration (10-80 mg L À1 ), and pH value (3-9) on degradation were investigated. During experiments, samples were taken every 15 min, and UV-vis Spectrophotometer (TU-1901, Beijing, China) was mainly used to monitor the removal rate of CIP in terms of variances in the absorbance, and the main absorption peak (l max ) located at 275 nm.…”

“…In addition, based on the molecular structure of CIP, mass spectrometry information of intermediates and characteristic fragment ions, the structure of intermediates was reasonably inferred (listed in Table S4 †). And according to previous studies, 11,35,55 the possible degradation pathways of CIP were proposed, as shown in Scheme 1, which mainly included the removal of uorine and the destruction of piperazine ring of quinolones. The three degradation pathways were staggered, and gradually achieved the goal of degrading CIP into small molecules.…”

“…Advanced oxidation processes, including Fenton oxidation, electrochemical oxidation and photocatalysis, have always been praised as viable methods on wastewater treatment. [11][12][13][14][15][16] By comparison, electrochemical oxidation has great advantages in the treatment of refractory organic wastewater because of its high processing efficiency, simple equipment, convenient operation, and environmental friendliness. 17 The anode materials are vital for electrochemical oxidation because they determine the formation of hydroxyl radicals.…”

A comparative study of the photocatalytic efficiency of metal oxide/hydroxyapatite nanocomposites in the degradation kinetic of ciprofloxacin in water

“…Of these, the continuous release of drugs and their metabolites into the aquatic environment gives these molecules a character of pseudo-persistence. Their presence in aquatic environments depends on their physicochemical properties and in particular their solubility in water, the stability of molecules and their half-life [12]. The aim of this study was to compare the photocatalytic efficiency of three nanocomposites ZnO-HAp, TiO 2 -HAp and Fe 2 O 3 -HAp with 40% by weight percentage oxide:HAp on the basis of the previous results in relation to the chemical structure and the surface of the metal oxides.…”