Establishing an efficient way via TiO2/MXene catalyst for photoelectro activating PMS degradation of BPA

Zhang, Yaxin; Chen, Zhuang; Zhang, Yimei; Gu, Wenwen; Huang, Wei; Xi, Jiangshan; Cao, Ting; Yan, Yu; Yang, Mingwang; Ke, Luoyilang

doi:10.1016/j.jelechem.2022.117053

Cited by 10 publications

(2 citation statements)

References 20 publications

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“…Moreover, two peaks at 459.3 eV (Ti 2p 3/2 ) and 464.8 eV (Ti 2p 1/2 ) indicate the presence of Ti 4+ ions . In the O 1s spectrum (Figure d), the peaks at the binding energies of 528.4 eV, 530.6 eV, and 531.7 eV, are devoted to lattice oxygen (Ti 4+ –O), oxygen defects (Ti 3+ –O), and adsorbed water molecules (Ti–OH), respectively. Therefore, the concentrations of Ti 4+ –O, Ti 3+ –O, and Ti–OH were 37.35, 51.81, and 10.84%, respectively.…”

Section: Resultsmentioning

confidence: 99%

Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO₂ Quantum Dots/TiO₂ Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes

Habibi-Yangjeh,

Pournemati,

Ahmadi

et al. 2024

Langmuir

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Today, cleaning the environment using photocatalytic technology is one of the main research activities. In this study, carbon dots (C-dots) were anchored on oxygen-vacancy-enriched TiO 2 quantum dots (QDs)/TiO 2 oxygen vacancies (OVs) using a facile procedure. The resultant ternary TiO 2 QDs/TiO 2 OVs/C-dots photocatalysts with a quantum dot size of almost 4.55 nm were used for detoxification of aqueous solutions containing four antibiotics and three organic dyes as well as inactivation of two pathogenic bacteria, including Escherichia coli and Staphylococcus aureus, upon visible light. The degradation constant of tetracycline over the optimized TiO 2 QDs/TiO 2 OVs/C-dots nanocomposite reached 714 × 10 −4 min −1 , which was 17.3, 12.1, and 2.92 times higher than TiO 2 QDs, TiO 2 OVs, and TQDs/TOVs (1:1) materials, respectively. Effective separation of electron−hole pairs between TiO 2 QDs and TiO 2 OVs counterparts through decorated C-dots by an established S-scheme system was the main reason for boosted photocatalytic activity. With regard to the facile growth of wheat and lentil seeds in the treated solutions, it is hoped that the TiO 2 QDs/TiO 2 OVs/C-dots nanocomposite with significant stability could be used to clean up wastewaters.

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Section: Resultsmentioning

confidence: 99%

Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO₂ Quantum Dots/TiO₂ Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes

Habibi-Yangjeh,

Pournemati,

Ahmadi

et al. 2024

Langmuir

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“…PMS frequently needs to be activated in order to be effective, since it does not release enough oxidizing radicals on its own to break down organic contaminants [14]. Currently, the available techniques for the catalysis of PMS include electrical activation [15], photoactivation [16], and material activation [17], which all involve sulfate radical production. Van et al [18] successfully synthesized a well-crystallized, high-purity magnetic MnFe 2 O 4 /α-MnO 2 hybrid using the hydrothermal method, and the degradation of OG reached 96.8% by activating PMS within 30 min.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Orange G Using PMS Triggered by NH2-MIL-101(Fe): An Amino-Functionalized Metal–Organic Framework

Mo,

Chen,

Wang

2024

Molecules

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As an azo dye, OG has toxic and harmful effects on ecosystems. Therefore, there is an urgent need to develop a green, environmentally friendly, and efficient catalyst to activate peroxymonosulfate (PMS) for the degradation of OG. In this study, the catalysts MIL-101(Fe) and NH2-MIL-101(Fe) were prepared using a solvothermal method to carry out degradation experiments. They were characterized by means of XRD, SEM, XPS, and FT-IR, and the results showed that the catalysts were successfully prepared. Then, a catalyst/PMS system was constructed, and the effects of different reaction systems, initial pH, temperature, catalyst dosing, PMS concentration, and the anion effect on the degradation of OG were investigated. Under specific conditions (100 mL OG solution with a concentration of 50 mg/L, pH = 7.3, temperature = 25 °C, 1 mL PMS solution with a concentration of 100 mmol/L, and a catalyst dosage of 0.02 g), the degradation of OG with MIL-101(Fe) was only 36.6% within 60 min; as a comparison, NH2-MIL-101(Fe) could reach up to 97.9%, with a reaction constant k value of 0.07245 min−1. The NH2-MIL-101 (Fe)/PMS reaction system was able to achieve efficient degradation of OG at different pH values (pH = 3~9). The degradation mechanism was analyzed using free-radical quenching tests. The free-radical quenching tests showed that SO4•−, •OH, and 1O2 were the main active species during the degradation of OG.

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Recent advances in design and engineering of MXene-based catalysts for photocatalysis and persulfate-based advanced oxidation processes: A state-of-the-art review

Eghbali,

Hassani,

Wacławek

et al. 2024

Chemical Engineering Journal

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Establishing an efficient way via TiO2/MXene catalyst for photoelectro activating PMS degradation of BPA

Cited by 10 publications

References 20 publications

Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO₂ Quantum Dots/TiO₂ Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes

Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO₂ Quantum Dots/TiO₂ Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes

Degradation of Orange G Using PMS Triggered by NH2-MIL-101(Fe): An Amino-Functionalized Metal–Organic Framework

Recent advances in design and engineering of MXene-based catalysts for photocatalysis and persulfate-based advanced oxidation processes: A state-of-the-art review

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Establishing an efficient way via TiO2/MXene catalyst for photoelectro activating PMS degradation of BPA

Cited by 10 publications

References 20 publications

Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO2 Quantum Dots/TiO2 Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes

Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO2 Quantum Dots/TiO2 Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes

Degradation of Orange G Using PMS Triggered by NH2-MIL-101(Fe): An Amino-Functionalized Metal–Organic Framework

Recent advances in design and engineering of MXene-based catalysts for photocatalysis and persulfate-based advanced oxidation processes: A state-of-the-art review

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Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO₂ Quantum Dots/TiO₂ Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes

Decoration of Carbon Dots on Oxygen-Vacancy-Enriched S-Scheme TiO₂ Quantum Dots/TiO₂ Oxygen Vacancies Photocatalysts: Impressive Quantum-Dot-Sized Photocatalysts for Remediation of Antibiotics, Bacteria, and Dyes