Degradation behaviors of naproxen by a hybrid TiO2 photocatalyst system with process components

Jung, Sang‐Chul; Bang, Hye-Jin; Lee, Heon; Kim, Hangun; Ha, Hyung‐Ho; Yu, Young Hyun; Park, Young-Kwon

doi:10.1016/j.scitotenv.2019.135216

Cited by 20 publications

(11 citation statements)

References 33 publications

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“…S4 of the ESI†). As shown in Table 1, no intermediates with greater toxicity than NPX were produced, which is different from the results reported in the literature that the photoproduct toxicity of the TiO 2 photocatalyst system is greater than naproxen, 49 indicating that CuZnAl-LDH is a highly effective catalyst for NPX photodegradation.…”

Section: Resultscontrasting

confidence: 89%

Photodegradation of naproxen using CuZnAl-layered double hydroxides as photocatalysts

Peng

et al. 2022

CrystEngComm

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Section: Resultscontrasting

confidence: 89%

Photodegradation of naproxen using CuZnAl-layered double hydroxides as photocatalysts

Peng

et al. 2022

CrystEngComm

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“…Previous studies have demonstrated that the two main NPX degradation routes are decarboxylation and hydroxylation (demethylation) as one can see in Figure 5 (Kanakaraju et al, 2016;Changanaqui et al, 2020;Jung et al, 2020). Noteworthy, these two routes can occur simultaneously or successively (Méndez-Arriaga et al, 2008b;Fan et al, 2019;Kowalkińska et al, 2023).…”

Section: Resultsmentioning

confidence: 93%

“…These species further react with either oxygen or water, leading to the generation of reactive oxygen species (ROS). ROS attacks organic molecules-here, NPX (Kanakaraju et al, 2016a;Changanaqui et al, 2020;Jung et al, 2020).…”

Section: Data Availability Statementmentioning

confidence: 99%

Photocatalytic degradation of naproxen using TiO2 single nanotubes

Sepúlveda,

Musiał,

Saldan

et al. 2024

Front. Environ. Chem.

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Herein, TiO2 single-tube (TiO2 ST-NT) powders with and without magnetite Fe3O4 nanoparticles (TiO2 ST-NT@Fe3O4NPs) are presented for the first time as excellent photocatalysts for the degradation of one of the most popular non-steroidal anti-inflammatory drugs (NSAIDs), naproxen (NPX). The TiO2 ST-NT powders were synthesized by anodization followed by etching of the double wall, bending, sonication, ultra-centrifugation, and finally annealing at 600°C. A part of the obtained TiO2 ST-NT powders was decorated with Fe3O4 nanoparticles using a simple one-step decoration process. The best photocatalytic performance of TiO2 ST-NT and TiO2 ST-NT@Fe3O4NPs powders was obtained under the white light (6.2 × 10−4 s-1) and the blue light (2.7 × 10−4 s-1), respectively. During NPX photodegradation using TiO2 ST-NT powders, three main NPX transformation products (P1, P2, and P3) were detected. Upon excitation with the blue light illumination, TiO2 ST-NT@ Fe3O4NPs powders exhibited higher performance (∼80%) than TiO2 ST-NT powders (∼23%) within 1 h, resulting in an approximately three times increased photocatalytic rate constant. Moreover, under simulated sunlight conditions, TiO2 ST-NT powders demonstrated remarkable activity, achieving a 94% NPX degradation within 1 h. TiO2 ST-NT and TiO2 ST-NT@Fe3O4NPs powders represent excellent photocatalysts for NPX degradation.

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“…The photodegradation of chemicals and pharmaceuticals mediated by nanostructured metal oxide semiconductors relies on the generation of HO• through water oxidation at the material surface [7][8][9][10][11][12][13] . Aiming to compare the reactivity of salicylic acid and paracetamol with HO• in the absence of the semiconductors, the degradation of the compounds was evaluated using H 2 O 2 /hν as a source of HO•.…”

Section: Resultsmentioning

confidence: 99%

“…The decomposition is provoked by intensive oxidation via reactive oxygen species (ROS) produced by the interaction of the photoexcited semiconductor with water. Among the ROS produced in the process, hydroxyl radical (HO•) has been argued as the most effective one, being responsible by hydrogen abstraction and/or direct electrophilic attack on aromatic moieties, which are usually present in the pollutants and pharmaceuticals [7][8][9][10][11][12][13] . After that, a cascade of oxidative reactions takes place leading to partial or total mineralization of the chemicals.…”

Section: Introductionmentioning

confidence: 99%

Salicylic Acid Boosts the TiO2 and ZnO-Mediated Photodegradation of Paracetamol

et al. 2021

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Titanium dioxide (TiO 2 ) and zinc oxide (ZnO) are among the most used catalysts in photodegradation. Paracetamol and salicylic acid are widely used as pharmaceutical drugs. We found that paracetamol is less susceptible to photodegradation compared to salicylic acid. From a chemical perspective, this was not expected since paracetamol is more vulnerable to chemical oxidation. Aiming the comprehension of this phenomenon, studies were performed comparing the efficiency of photodegradation of paracetamol versus salicylic acid and acetophenone versus 4-aminoacetophenone. The presence of amino/amide group decreased the efficiency of degradation significantly. It was also found that salicylic acid improved the degradation of paracetamol when both compounds were present in the reaction medium. The lower efficiency of photodegradation of the amino-based compounds seems to be related to the deactivation of the excited states of the TiO 2 and ZnO. Theoretical calculations at the TD-PBE0/6-311++G(3df,2p) high level were performed and corroborated our proposal.

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Degradation behaviors of naproxen by a hybrid TiO2 photocatalyst system with process components

Cited by 20 publications

References 33 publications

Photodegradation of naproxen using CuZnAl-layered double hydroxides as photocatalysts

Photodegradation of naproxen using CuZnAl-layered double hydroxides as photocatalysts

Photocatalytic degradation of naproxen using TiO2 single nanotubes

Salicylic Acid Boosts the TiO2 and ZnO-Mediated Photodegradation of Paracetamol

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