Photocatalytic degradation of amoxicillin by carbon quantum dots modified K2Ti6O13 nanotubes: Effect of light wavelength

Chen, Qiankun; Chen, Long; Qi, Juanjuan; Tong, Y.Z.; Lv, Yitao; Xu, Chaokai; Ni, Jinren; Liu, Wen

doi:10.1016/j.cclet.2019.03.002

Cited by 136 publications

(27 citation statements)

References 44 publications

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“…Since 1972, Fujishima and Honda (1972) found that titanium oxide (TiO 2 ) could split water to produce hydrogen under UV light irradiation, thus opening up a new era of titanium oxide (TiO 2 ) in photocatalysis. Up to now, TiO 2 has been Tryba et al, 2006 Fe-C-TiO 2 2.1 × 10 −4 mol L −1 phenol 2.8 0.2 g/L 0.015 mM 120 min UV light 98% degradation removal Tryba et al, 2006 Fe-TiO 2 0.32 mM thiacloprid 2.8 1.67 g/L 45 mM 500 min UV light 100% TOC removal Banić et al, 2011 CdS/MWCNT-TiO 2 50 mM methylene blue 3.5 0.75 g/L 0.6 mM 120 min Visible light 98% discoloration and 83% TOC removal Kim and Kan, 2015 well-applied in the fields of energy and environment, including organic removal (Vaiano et al, 2015;Shayegan et al, 2018;Chen et al, 2019;Dong et al, 2019), hydrogen production (Zhang et al, 2012;Xi et al, 2014;Xing et al, 2015;, CO 2 reduction (Yu et al, 2014;Dong et al, 2018a;Xing et al, 2018b), nitrogen fixation (Comer and Medford, 2018;Li C. et al, 2018;Zhao et al, 2019), and methane conversion (Wang P. et al, 2017;Yu et al, 2017), etc. Attributed to the sufficiently high reduction potential, low economical cost and high stability, TiO 2 has attracted great attention as one of the most potential and influential photocatalysts (Dong et al, 2018b).…”

Section: Removing Organic Pollutantmentioning

confidence: 99%

Recent Progress of Photocatalytic Fenton-Like Process for Environmental Remediation

Dong

Xing

Zhang

2020

Front. Environ. Chem.

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Over the past few decades, Fenton process has been widely studied in environmental remediation. Due to the low efficiency of iron ions recycling, the Fenton efficiency has been seriously impeded for practical application. On this condition, with combination of photocatalysts, it is expected to fully use photo-generated electrons, thus enhancing the photo-Fenton efficiency. This synergistic methodology has assisted many researchers to remove various categories of organic pollutants in discharged wastewater or achieve gas conversion. This comprehensive review describes some significant advances with respect to presentative semiconductors (e.g., TiO 2 , g-C 3 N 4 , graphene, BiVO 4 , ZnFeO 4 and BiFeO 3 , etc.) including their preparation methods, characterization and applications in environmental remediation (e.g., organic removal, bacteria disinfection, membrane separation, and gas conversion). The mechanism is preferentially discussed. Possibly future development and its correlated potential challenges are specifically proposed and discussed in this review.

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Section: Removing Organic Pollutantmentioning

confidence: 99%

Recent Progress of Photocatalytic Fenton-Like Process for Environmental Remediation

Dong

Xing

Zhang

2020

Front. Environ. Chem.

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“…CDs obtained from the carbonization of Gum Tragacanth reduced iron salts and produce Fe 0 , and act as capping agents for Fe0. NZVI / CDs are used to degrade AMX [48]. Otherwise, Shukun et al studied CDs sensitized 2D-2D heterojunction of BiVO4/Bi3TaO7 with a simple hydrothermal method besides being used to degrade TC, it is also used for AMX degradation.…”

Section: Amoxicillin Removalmentioning

confidence: 99%

“…This is because there is more reactivity of AMX's molecular structure and CIP's tendency to form complexes with iron ions under certain conditions. In addition, the low reactivity of protonated amines (a cationic form of CIP) against hydroxyl radicals in acidic pH is one of the possible explanations for the removal of lower CIP [48].…”

Section: Ciprofloxacin Removalmentioning

confidence: 99%

“…AMX [46] Sn2Ta2O7/SnO2/CDs Hydrothermal Visible light for 88.3 120 minutes AMX [47] CDs/K2Ti6O13 Hydrothermal Visible light for 100 90 minutes AMX [48] NZVI/CDs Hydrothermal AMX [45] CDs/BiVO4/Bi3TaO7 Hydrothermal Visible light 89.3 CIP [49] ZnO/N, S-CDs One-pot Visible light 85.8 hydrothermal CIP [48] NZVI/CDs Hydrothermal CIP [45] CDs/BiVO4/Bi3TaO7 Hydrothermal Visible light 87.1…”

Section: Ciprofloxacin Removalmentioning

confidence: 99%

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A Review of Carbon dots (CDs) Application in Sensing and Removing Medical Waste

et al. 2020

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Carbon dots materials (CDs) have the capability in the management of medical waste problem because of its advantage in the detection and degradation of pollutants. The synthesized CDs through various processes and raw materials have been applied to medical wastes, especially antibiotics such as tetracycline (TC), amoxicillin (AMX), para-Nitrophenol (p-NP), doxycycline (DC), ciprofloxacin (CIP), and oxytetracycline (OTC). These antibiotics are detected by utilizing changes in the luminescence property of CDs from the turn-off and turn-on mechanisms. Afterward, the degradation process is conducted using CDs as support materials agent semiconductors in the photosynthesis scheme. In general, CDs can be referred to as multifunction smart materials with the ability to detecting the presence of the antibiotics in simple, sensitive, and selective ways, and potency of medical pollutant removal clearly and effectively.

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“…Compared with HO ⋅ , whose redox potential is 2.8 V and half-life is <1 µs, SO ⋅− 4 has a higher redox potential (2.5-3.1 V) at some times and a longer half-life (30-40 µs) for high degradation efficiency for pollutants (Ji et al, 2019;Munoz, de Pedro, Casas, & Rodriguez, 2015;. Moreover, it is reported that SO ⋅− 4 could be generated through peroxymonosulfate (PMS, HSO − 5 ) activation using different methods, such as UV light, heat, activated carbon, and transition metals catalysts (Chen et al, 2019;Verma, Nakamura, & Sillanpaa, 2016;. Especially, Co 2+ has been identified as one of the most effective and efficient PMS activators (Anipsitakis & Dionysiou, 2004;Guo, Su, Yi, & Ma, 2013;Zhang, Zhu, & Croué, 2013).…”

Section: Introductionmentioning

confidence: 99%

Degradation of atrazine in aqueous solution through peroxymonosulfate activated by Co‐modified nano‐titanium dioxide

Cai

Yin

et al. 2020

Water Environment Research

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Peroxymonosulfate (PMS) heterogeneous activation by Co3O4‐modified catalyst has shown significant implications to generate free radicals for organic pollutants degradation in water. In this study, PMS heterogeneous activation was applied to degrade atrazine (ATZ) using Co3O4‐mediated titanium dioxide nanoparticles (Co3O4/TiO2 NPs), which were synthesized by sol‐gel method. Firstly, characteristics of the fresh and used Co3O4/TiO2 NPs were analyzed via SEM, TEM, XRD, EDS, and XPS techniques. Then, the influences of several key parameters (i.e., Co3O4/TiO2 NPs dose (0.02–0.3 g/L), PMS dose (0–0.6 mM), initial pH (3.0–11.0), and co‐existing anions) on the ATZ degradation were investigated systematically. Besides, control systems were set up to verify the high efficiency of Co3O4/TiO2 NPs. In addition, the radical scavenging experiments revealed that sulfate and hydroxyl radicals were generated in the Co3O4/TiO2‐PMS system, while sulfate radicals were the dominant reactive species responsible for ATZ degradation. Furthermore, the stability and reusability of the Co3O4/TiO2 NPs were investigated after four consecutive experiments. Based on the identified products, possible degradation pathways of ATZ in the Co3O4/TiO2‐PMS system were proposed. Finally, the possible reaction mechanism of Co3O4/TiO2‐PMS system was proposed according to the comprehensive analysis. Findings of this study provided useful information for the application of Co3O4/TiO2 NPs in recalcitrant organic contaminants degradation. Practitioner points Co3O4/TiO2 NPs were synthesized via the simple sol‐gel method. Co3O4/TiO2 NPs possessed excellent catalytic performance for PMS to eliminate ATZ. Sulfate radicals play a dominant role in the degradation of ATZ. ATZ degradation pathways and reaction mechanism in the system were proposed.

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Photocatalytic degradation of amoxicillin by carbon quantum dots modified K2Ti6O13 nanotubes: Effect of light wavelength

Cited by 136 publications

References 44 publications

Recent Progress of Photocatalytic Fenton-Like Process for Environmental Remediation

Recent Progress of Photocatalytic Fenton-Like Process for Environmental Remediation

A Review of Carbon dots (CDs) Application in Sensing and Removing Medical Waste

Degradation of atrazine in aqueous solution through peroxymonosulfate activated by Co‐modified nano‐titanium dioxide

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