Efficient generation of singlet oxygen (1O2) by hollow amorphous Co/C composites for selective degradation of oxytetracycline via Fenton-like process

Hong, Peidong; Wu, Zijian; Yang, Danni; Zhang, Kaisheng; He, Jianming; Li, Yulian; Xie, Chao; Yang, Wu; Yang, Ya; Kong, Lingtao; Liu, Jinhuai

doi:10.1016/j.cej.2021.129594

Cited by 115 publications

(21 citation statements)

References 57 publications

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“…Hong et al also confirmed that hollow amorphous Co/C composites could efficient generate 1 O 2 via a Fenton-like process. 37 These results suggest that P2/GA–Fe possessed photothermally-enhanced chemodynamic effects.…”

Section: Resultsmentioning

confidence: 86%

Biodegradable Fe(ii)/Fe(iii)-coordination-driven nanoassemblies for chemo/photothermal/chemodynamic synergistic therapy of bacterial infection

Dai

Liu

et al. 2022

New J. Chem.

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Section: Resultsmentioning

confidence: 86%

Biodegradable Fe(ii)/Fe(iii)-coordination-driven nanoassemblies for chemo/photothermal/chemodynamic synergistic therapy of bacterial infection

Dai

Liu

et al. 2022

New J. Chem.

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“…Once SMX molecules are degraded, the occupied active sites would be re-exposed as active sites for the adsorption of new molecules. Afterward, the intermediate by-product HO 2 will be transformed into O 2 •– , which will ultimately give rise to the generation of 1 O 2 through a direct recombination process . As a result of continuous striking of the generated reactive species, the target pollutant SMX would be degraded rapidly via • OH-dominated oxidative process.…”

Section: Resultsmentioning

confidence: 99%

“…•− , which will ultimately give rise to the generation of 1 O 2 through a direct recombination process. 66 As a result of continuous striking of the generated reactive species, the target pollutant SMX would be degraded rapidly via • OH-dominated oxidative process. The whole process for SMX degradation by the FeOOH∼5@ BNG/H 2 O 2 system is summarized in Figure 8.…”

Section: Influence Of Reaction Parametersmentioning

confidence: 99%

Amorphous FeOOH Anchored on Boron and Nitrogen Codoped Carbon Nanotubes for Fenton-like Oxidation of Sulfamethoxazole

Asif

Shi

et al. 2023

J. Phys. Chem. C

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Amorphous iron oxide/hydroxides with structural disorder can be a potential alternative to typical crystalline structures when applied in environmental nanotechnology. In this work, novel amorphous FeOOH quantum dots (QDs) anchored on boron and nitrogen codoped graphene nanotubes (FeOOH@BNG) with different Fe loadings were synthesized and applied in the degradation of common antibiotic pollutant sulfamethoxazole (SMX). The as-fabricated catalysts were characterized by a series of physicochemical and thermal techniques, revealing the highly dispersive FeOOH QDs on the BNG surface. The as-prepared catalyst shows excellent catalytic ability toward SMX degradation via a Fenton-like approach. The excellent activity of the as-prepared FeOOH@BNG catalysts was ascribed to the enhanced textural properties and better exposure of active sites, thanks to the highly dispersive Fe sites on the BNG supports. The optimal catalyst, FeOOH-5@BNG, was further employed for the optimization of key reaction parameters such as catalyst loading, H2O2 dosage, pH, and reaction temperature. Moreover, electron paramagnetic resonance (EPR) and reactive species quenching tests were employed to reveal the responsive reactive oxygen species and the mechanism in the FeOOH@BNG/H2O2 system for SMX degradation. The current study not only opens new insights into the fabrication of amorphous but metallic nanomaterials but also leads to their potential application in environmental remediation.

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“…It is worth noting that, even though •OH has commonly been found to be the main active species for Fenton reactions [52,58,70], some research has also reported 1 O 2 to be the key species [24,61,71]. The nanoconfinement of the Fe in the porous structure of catechol-HCP-Fe might stimulate the generation of 1 O 2 , as Yang et al demonstrated that 1 O 2 was the preferably predominant species in the nanoconfined structure of Fe 2 O 3 @FCNT, while the •OH was the main active species when the Fe 2 O 3 was anchored on the outer surface of the FCNT [61].…”

Section: Mechanistic Study Of Dye Degradation Processmentioning

confidence: 99%

Fe-Immobilised Catechol-Based Hypercrosslinked Polymer as Heterogeneous Fenton Catalyst for Degradation of Methylene Blue in Water

Ratvijitvech

2022

Polymers

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Clean water is one of the sustainable development goals. Organic dye is one of the water pollutants affecting water quality. Hence, the conversion of dyes to safer species is crucial for water treatment. The Fenton reaction using Fe as a catalyst is a promising process. However, homogeneous catalysts are normally sensitive, difficult to separate, and burdensome to reuse. Therefore, a catechol-based hypercrosslinked polymer (catechol-HCP) was developed as an inexpensive solid support for Fe (catechol-HCP-Fe) and applied as a heterogenous Fenton catalyst. The good interaction of the catechol moiety with Fe, as well as the porous structure, simple preparation, low cost, and high stability of catechol-HCP, make it beneficial for Fe-loading in the polymer and Fenton reaction utilisation. The catechol-HCP-Fe demonstrated good catalytic activity for methylene blue (MB) degradation in a neutral pH. Complete decolouration of 100 ppm MB could be observed within 25 min. The rate of reaction was influenced by H2O2 concentration, polymer dose, MB concentration, pH, and temperature. The catechol-HCP-Fe could be reused for at least four cycles. The dominant reactive species of the reaction was considered to be singlet oxygen (1O2), and the plausible mechanism of the reaction was proposed.

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Efficient generation of singlet oxygen (1O2) by hollow amorphous Co/C composites for selective degradation of oxytetracycline via Fenton-like process

Cited by 115 publications

References 57 publications

Biodegradable Fe(ii)/Fe(iii)-coordination-driven nanoassemblies for chemo/photothermal/chemodynamic synergistic therapy of bacterial infection

Biodegradable Fe(ii)/Fe(iii)-coordination-driven nanoassemblies for chemo/photothermal/chemodynamic synergistic therapy of bacterial infection

Amorphous FeOOH Anchored on Boron and Nitrogen Codoped Carbon Nanotubes for Fenton-like Oxidation of Sulfamethoxazole

Fe-Immobilised Catechol-Based Hypercrosslinked Polymer as Heterogeneous Fenton Catalyst for Degradation of Methylene Blue in Water

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