Coupling photocatalysis with ozonation for enhanced degradation of Atenolol by Ag-TiO2 micro-tube

Yu, Ling; Liao, Gaozu; Xie, Youhua; Yin, Jun; Huang, Jiye; Feng, Wei; Li, Laisheng

doi:10.1016/j.jphotochem.2016.07.007

Cited by 48 publications

(17 citation statements)

References 29 publications

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“…Pharmaceuticals are emerging environmental organic wastewater contaminants due to their potential impact on humans, animals, and microorganisms . The occurrence of pharmaceutical chemicals in municipal wastewaters is due to effluents arising from pharmaceutical manufacturing facilities and human excretions into sewers .…”

Section: Introductionmentioning

confidence: 99%

“…Improving the PCA can be accomplished by narrowing the band gap to the visible light or by reducing the recombination reaction. Incorporating TiO 2 with metals such as Ag has been reported to improve the photocatalytic activities based on improvement in the two factors previously discussed . Incorporating TiO 2 with Ag is advantageous because of its low cost, inherent antibacterial activity, and facile preparation .…”

Section: Introductionmentioning

confidence: 99%

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One‐step deposition of nano‐Ag‐TiO₂ coatings by atmospheric pressure plasma jet for water treatment: Application to trace pharmaceutical removal using solar photocatalysis

Peng

Pulpytel

Horovitz

et al. 2019

Plasma Processes & Polymers

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In this study, micrometer thick Ag‐TiO2 coatings were deposited in a single and facile step by spraying the precursor in an atmospheric pressure plasma jet with different concentrations of Ag nanoparticles. The homogenous distribution of Ag decreased the TiO 2 crystal size and increased the surface area. The coatings were characterized to be porous with an anatase phase with improved charge separation and visible light absorption. The photocatalytic activity of the materials was investigated for degrading rhodamine B using a white lamp as a screening method to optimize Ag‐TiO 2 coatings. Then the photodegradation of trace pharmaceutical compounds (TrPCs) was investigated by using a solar light simulator at the optimal condition of a TiO 2 coating with 0.4wt% Ag.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

One‐step deposition of nano‐Ag‐TiO₂ coatings by atmospheric pressure plasma jet for water treatment: Application to trace pharmaceutical removal using solar photocatalysis

Peng

Pulpytel

Horovitz

et al. 2019

Plasma Processes & Polymers

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show abstract

“…Rosal et al reported degradation of 99% of ATE when treating effluents from a sewage treatment plant with ozone and H 2 O 2 . In hospital effluent, Wilde et al reported 90% degradation after 60 min with an ozone flow of 400 mg/L.h and Ling et al degradation of 78% by applying 50 mg/h of ozone in water. Other studies have also shown that photocatalysis coupled with ozonation can improve the efficiency of ATE degradation in shorter experiment times .…”

Section: Resultsmentioning

confidence: 99%

“…In hospital effluent, Wilde et al reported 90% degradation after 60 min with an ozone flow of 400 mg/L.h and Ling et al degradation of 78% by applying 50 mg/h of ozone in water. Other studies have also shown that photocatalysis coupled with ozonation can improve the efficiency of ATE degradation in shorter experiment times . Amongst the studies that evaluated the ATE degradation by ozonation, only Wilde et al identified nine DPs formed under more severe treatment conditions.…”

Section: Resultsmentioning

confidence: 99%

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Oxidative treatments for atenolol removal in water: Elucidation by mass spectrometry and toxicity evaluation of degradation products

Quaresma

Sousa

Silva

et al. 2019

Rapid Comm Mass Spectrometry

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Rationale The presence of pharmaceuticals in water is a worldwide concern due to potential damage to human and environmental health. For example, compounds such as the β‐blocker atenolol (ATE), widely used for the treatment of cardiac disease, are detected in drinking water since conventional water treatment plants are not designed to remove them. Thus, the evaluation of ATE removal at different water oxidative treatment processes, identification of its degradation products and evaluation of their toxicity is necessary. Methods Aqueous solutions of ATE (10 mg/L) were submitted to oxidative treatments of chlorination ([NaClO] = 10 mg/L), ozonation ([O3] = 8 mg/L), photocatalysis ([TiO2] = 120 mg/L and UV‐C light) and photolysis (UV‐C light). The removal of ATE and formation of degradation products (DPs) were monitored by mass spectrometry. To assess acute cytotoxicity, DPs were submitted to colorimetric MTT assay using HepG2 cells. The Ecological Structure Activity Relationships (ECOSAR) software was applied to estimate the acute and chronic toxicity of identified DPs at different trophic levels. Results Photocatalysis was the treatment that demonstrated greater efficiency, removing 94% of the initial ATE. For the four tested treatments, 12 DPs were confirmed after 30 min. Moreover, some of the identified DPs were unpublished in the literature. Through high‐resolution mass spectrometry (HRMS), it was possible to elucidate the structure of the DPs. Solutions of DPs were not considered to be toxic to HepG2 cells. Only the DP with a molecular formula of C13H19NO3 (m/z 238.1438) could be considered detrimental to daphnid and green algae. Conclusions Low rates of organic matter removal and high rates of ATE degradation were obtained in the applied treatments after 30 min. Although the treated solutions were not toxic to HepG2 cells, one of the degradation products can be considered an environmental concern since it presents chronic toxicity to daphnid and green algae.

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Titanosilicate ETS‐10 Molecular Sieve Anchored Silver Nanoparticles for Efficient Photocatalytic Degradation of Tetracycline Hydrochloride: Synergetic Effect of H₂O₂ and Ag/ETS‐10 under Visible Light

et al. 2022

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Herein, a facile and effective photocatalytic method for the degradation of the tetracycline hydrochloride (TCH) was proposed. The photocatalyst Ag/ETS‐10 was prepared by photoreduction, using cubic‐structured EST‐10 molecular sieves as the support for the silver nanoparticles. The synthesized photocatalyst Ag/ETS‐10 has small characteristic peaks and a chemical shift of Ag, resulting in a redshift. The results of photocatalytic experiments show that H2O2‐promoted Ag/ETS‐10 exhibits a superior visible‐light photocatalytic performance, and the degradation rate of TCH (50 mg L−1) is up to 94.9 % within 100 min, which is significantly better than pure ETS‐10 (23.9 %) and Ag/ETS‐10 (26.9 %). The reaction rate constant of H2O2‐promoted Ag/ETS‐10 is 17.75 and 31.55 times of those of ETS‐10 and Ag/ETS‐10, respectively. More importantly, the photocatalytic activity of H2O2‐promoted Ag/ETS‐10 remains stable after four cycles. The outstanding photocatalytic performance is due to the synergistic interaction of H2O2 with Ag/ETS‐10 to promote the rapid separation of photo‐generated electron‐hole pairs and enhance the generation of h+ and ⋅O2− radicals. In addition, the presence of silver induces the surface plasmon resonance effect and acts as a good acceptor for photogenerated e− in the photocatalytic reaction, enhancing the photocatalytic activities. This work provides a new insight for the design and synthesis of stable and efficient photocatalysts for visible light degradation of antibiotics.

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Coupling photocatalysis with ozonation for enhanced degradation of Atenolol by Ag-TiO2 micro-tube

Cited by 48 publications

References 29 publications

One‐step deposition of nano‐Ag‐TiO₂ coatings by atmospheric pressure plasma jet for water treatment: Application to trace pharmaceutical removal using solar photocatalysis

One‐step deposition of nano‐Ag‐TiO₂ coatings by atmospheric pressure plasma jet for water treatment: Application to trace pharmaceutical removal using solar photocatalysis

Oxidative treatments for atenolol removal in water: Elucidation by mass spectrometry and toxicity evaluation of degradation products

Titanosilicate ETS‐10 Molecular Sieve Anchored Silver Nanoparticles for Efficient Photocatalytic Degradation of Tetracycline Hydrochloride: Synergetic Effect of H₂O₂ and Ag/ETS‐10 under Visible Light

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Coupling photocatalysis with ozonation for enhanced degradation of Atenolol by Ag-TiO2 micro-tube

Cited by 48 publications

References 29 publications

One‐step deposition of nano‐Ag‐TiO2 coatings by atmospheric pressure plasma jet for water treatment: Application to trace pharmaceutical removal using solar photocatalysis

One‐step deposition of nano‐Ag‐TiO2 coatings by atmospheric pressure plasma jet for water treatment: Application to trace pharmaceutical removal using solar photocatalysis

Oxidative treatments for atenolol removal in water: Elucidation by mass spectrometry and toxicity evaluation of degradation products

Titanosilicate ETS‐10 Molecular Sieve Anchored Silver Nanoparticles for Efficient Photocatalytic Degradation of Tetracycline Hydrochloride: Synergetic Effect of H2O2 and Ag/ETS‐10 under Visible Light

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One‐step deposition of nano‐Ag‐TiO₂ coatings by atmospheric pressure plasma jet for water treatment: Application to trace pharmaceutical removal using solar photocatalysis

One‐step deposition of nano‐Ag‐TiO₂ coatings by atmospheric pressure plasma jet for water treatment: Application to trace pharmaceutical removal using solar photocatalysis

Titanosilicate ETS‐10 Molecular Sieve Anchored Silver Nanoparticles for Efficient Photocatalytic Degradation of Tetracycline Hydrochloride: Synergetic Effect of H₂O₂ and Ag/ETS‐10 under Visible Light