Improvement of Carbonyl Groups and Surface Defects in Carbon Nanotubes to Activate Peroxydisulfate for Tetracycline Degradation

Wang, Wenxi; Zhang, Junjie; Hou, Zhiran; Chen, Pei; Xu, Zhou; Tan, Fatang; Wang, Xinyun; Qiao, Xueliang

doi:10.3390/nano13010216

Cited by 6 publications

(3 citation statements)

References 56 publications

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“…Peroxymonosulfate (SO 5 2− , PMS) and peroxydisulfate (S 2 O 8 2− , PDS) are two common persulfates that are utilized in AOPs, both of which are chemically stable under mild conditions when they are not activated [53,54]. Taking advantage of easy separation, heterogeneous activation has attracted increasing attention compared with homogeneous systems [55], especially for nZVI, which can be conveniently recovered by a magnet and recycled.…”

Section: Persulfate-based Aopsmentioning

confidence: 99%

Recent Advances in Nanoscale Zero-Valent Iron (nZVI)-Based Advanced Oxidation Processes (AOPs): Applications, Mechanisms, and Future Prospects

Liu,

Ye,

et al. 2023

Nanomaterials

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The fast rise of organic pollution has posed severe health risks to human beings and toxic issues to ecosystems. Proper disposal toward these organic contaminants is significant to maintain a green and sustainable development. Among various techniques for environmental remediation, advanced oxidation processes (AOPs) can non-selectively oxidize and mineralize organic contaminants into CO2, H2O, and inorganic salts using free radicals that are generated from the activation of oxidants, such as persulfate, H2O2, O2, peracetic acid, periodate, percarbonate, etc., while the activation of oxidants using catalysts via Fenton-type reactions is crucial for the production of reactive oxygen species (ROS), i.e., •OH, •SO4−, •O2−, •O3CCH3, •O2CCH3, •IO3, •CO3−, and 1O2. Nanoscale zero-valent iron (nZVI), with a core of Fe0 that performs a sustained activation effect in AOPs by gradually releasing ferrous ions, has been demonstrated as a cost-effective, high reactivity, easy recovery, easy recycling, and environmentally friendly heterogeneous catalyst of AOPs. The combination of nZVI and AOPs, providing an appropriate way for the complete degradation of organic pollutants via indiscriminate oxidation of ROS, is emerging as an important technique for environmental remediation and has received considerable attention in the last decade. The following review comprises a short survey of the most recent reports in the applications of nZVI participating AOPs, their mechanisms, and future prospects. It contains six sections, an introduction into the theme, applications of persulfate, hydrogen peroxide, oxygen, and other oxidants-based AOPs catalyzed with nZVI, and conclusions about the reported research with perspectives for future developments. Elucidation of the applications and mechanisms of nZVI-based AOPs with various oxidants may not only pave the way to more affordable AOP protocols, but may also promote exploration and fabrication of more effective and sustainable nZVI materials applicable in practical applications.

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Section: Persulfate-based Aopsmentioning

confidence: 99%

Recent Advances in Nanoscale Zero-Valent Iron (nZVI)-Based Advanced Oxidation Processes (AOPs): Applications, Mechanisms, and Future Prospects

Liu,

Ye,

et al. 2023

Nanomaterials

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“…Electro-Fenton and persulfate-based Fenton-like methods are of interest. The electro-Fenton method has a narrow pH range, usually only for acidic conditions (pH = 2.8-3.5) [3][4][5], that brings high requirements for equipment, such as the need for corrosion resistance. In contrast, persulfate-based advanced oxidation processes (PS-AOPs) not only possess sulfate radicals with a longer lifetime than hydroxyl radicals but also have a broader pH applicability range [6].…”

Section: Introductionmentioning

confidence: 99%

“…(1) FeCo-LDH/LI-NDG was characterized to confirm its morphology, phase and chemical state; (2) The capability of FeCo-LDH/LI-NDG for electrocatalytically activating PMS to degrade MB was studied; (3) The interference resistance, recyclability and stability of FeCo-LDH/LI-NDG were explored; (4) The reactive oxygen species in the FeCo-LDH/LI-NDG/EC/PMS system and reaction mechanism were confirmed; (5) The degradation intermediates of MB were identified and evaluated for biological toxicity.…”

Section: Introductionmentioning

confidence: 99%

Laser-Induced Nitrogen-Doped Graphene Composite Iron–Cobalt Hydroxide for Methylene Blue Degradation via Electrocatalytic Activation of Peroxymonosulfate

Chen,

Liao,

et al. 2023

Catalysts

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With the acceleration of industrialization, the removal of refractory organic dyes from water and how to promote its practical application remains a challenge. Herein, we synthesized an FeCo-LDH/LI-NDG composite electrode material by a simple laser-induced technique on polyimide films, which could electrocatalytically activate peroxymonosulfate (PMS) to completely degrade MB in about 6 min. The reaction rate constant (kobs) was 0.461 min−1. It was faster than most of the currently reported electrocatalysts. The reaction system demonstrated good interference resistance and catalytic effectiveness in the pH range of 3 to 9. According to the chemical quenching and electron paramagnetic resonance (EPR) experiments, the non-radical pathway of 1O2 and the radical pathways of SO4·−, ·OH and O2·− were involved in the reaction synergistically, with 1O2 playing the dominant role. 1O2 was produced through the dual pathway of PMS electron loss at the anode and O2·− intermediate transformation at the cathode. The two activation methods of electro-activation and catalytic activation of PMS had synergistic effects to achieve high efficiency in the whole process of production, reaction and recovery, providing new ideas to advance practical applications.

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Nitrogen-doped reduced graphene oxide (N-rGO) three-dimensional electrode electrochemically activates persulfate for the degradation of tetracycline

Liu,

Zhang

2024

Carbon Lett.

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Improvement of Carbonyl Groups and Surface Defects in Carbon Nanotubes to Activate Peroxydisulfate for Tetracycline Degradation

Cited by 6 publications

References 56 publications

Recent Advances in Nanoscale Zero-Valent Iron (nZVI)-Based Advanced Oxidation Processes (AOPs): Applications, Mechanisms, and Future Prospects

Recent Advances in Nanoscale Zero-Valent Iron (nZVI)-Based Advanced Oxidation Processes (AOPs): Applications, Mechanisms, and Future Prospects

Laser-Induced Nitrogen-Doped Graphene Composite Iron–Cobalt Hydroxide for Methylene Blue Degradation via Electrocatalytic Activation of Peroxymonosulfate

Nitrogen-doped reduced graphene oxide (N-rGO) three-dimensional electrode electrochemically activates persulfate for the degradation of tetracycline

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