Construction of core-shell Fe3O4@GO-CoPc photo-Fenton catalyst for superior removal of tetracycline: The role of GO in promotion of H2O2 to •OH conversion

Huang, Xiaohan; Xiao, Jianfei; Yi, Qing; Li, Dejian; Liu, Chenrui; Liu, Yun

doi:10.1016/j.jenvman.2022.114613

Cited by 33 publications

(10 citation statements)

References 62 publications

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“…Due to the presence of Fe 3 O 4 , BMFH/Fe 3 O 4 also has the ability of Fenton-like catalytic degradation of organic pollutants (MG and TH). Compared with some catalysts ( Table S3 ) [ 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 ], although there is still a certain gap in catalytic performance, it is enough to demonstrate the potential of magnetic biochars prepared by one-step carbonization synthesis in the control of organic pollutants.…”

Section: Resultsmentioning

confidence: 99%

One-Step Carbonization Synthesis of Magnetic Biochar with 3D Network Structure and Its Application in Organic Pollutant Control

Chen

Lin

et al. 2022

IJMS

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In this study, a magnetic biochar with a unique 3D network structure was synthesized by using a simple and controllable method. In brief, the microbial filamentous fungus Trichoderma reesei was used as a template, and Fe3+ was added to the culture process, which resulted in uniform recombination through the bio-assembly property of fungal hyphae. Finally, magnetic biochar (BMFH/Fe3O4) was synthesized by controlling different heating conditions in a high temperature process. The adsorption and Fenton-like catalytic performance of BMFH/Fe3O4 were investigated by using the synthetic dye malachite green (MG) and the antibiotic tetracycline hydrochloride (TH) as organic pollutant models. The results showed that the adsorption capacity of BMFH/Fe3O4 for MG and TH was 158.2 and 171.26 mg/g, respectively, which was higher than that of most biochar adsorbents, and the Fenton-like catalytic degradation effect of organic pollutants was also better than that of most catalysts. This study provides a magnetic biochar with excellent performance, but more importantly, the method used can be effective in further improving the performance of biochar for better control of organic pollutants.

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Section: Resultsmentioning

confidence: 99%

One-Step Carbonization Synthesis of Magnetic Biochar with 3D Network Structure and Its Application in Organic Pollutant Control

Chen

Lin

et al. 2022

IJMS

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“…At the same time, Fe (III) can also activate H 2 O 2 to generate HOO• (Eqn 10). 31

\equiv Fe (II) + {normalH}_{2} {normalO}_{2} \to \equiv Fe (III) + • OH + {OH}^{-}

\equiv Fe (III) + {normalH}_{2} {normalO}_{2} \to \equiv Fe (II) + HOO • + {normalH}^{goodbreak+}

…”

Section: Resultsmentioning

confidence: 99%

H₂O₂ assisted photocatalysis over Fe‐MOF modified BiOBr for degradation of RhB

Chen

Duan

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Advanced oxidation technologies such as photocatalysis assisted by hydrogen peroxide (H2O2) are significantly more effective. Their synergy may greatly improve the degradation efficiency of pollutants with proper catalysts. In this study, a series of iron Metal organic framework/bismuth oxybromide (Fe‐MOF/BiOBr) catalysts were prepared, and their properties examined using Rhodamine B (RhB) as the target pollutant. Through comparison tests of photocatalysis and activating H2O2 under visible light‐initiated oxidation reaction, the catalyst, the degradation effect and reaction conditions were optimized. RESULTS All of the composites showed better photocatalysis performance than the pure BiOBr and Fe‐MOF, and the catalytic efficiency of a composite sample MB1 with 5 mg Fe‐MOF in BiOBr was the highest. When MB1 was applied to aheterogenous Fenton‐like reaction involving H2O2 and photocatalysis under visible light ([H2O2] = 10 mmol L–1), the capacity for degradation of RhB increased to 11.1 mg/(mg·min) whereas it was only 4 mg/(mg·min) by photocatalysis alone. In addition, the optimal reaction conditions were pH 5 and 50 W light. The mechanism study showed that 1 O2 and ·O2− were the main active species for pollutant degradation. CONCLUSION This study provides a new and highly efficient catalyst to heterogeneously activate H2O2 under visible light to degrade a pollutant. The developed Fe‐MOF/BiOBr combination has great application potential. © 2022 Society of Chemical Industry (SCI).

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“…The common metal oxides used for the preparation of diatomic catalysts are titanium dioxide (TiO 2 ), CeO 2 , and Fe 3 O 4 . [101][102][103] 2) Metal sulfide: in addition to having more pore structures that can be used to support high-density atom-level dispersed metal atoms, the S atom can also coor- (a-f) Reproduced with permission. [96] Copyright 2021, Elsevier.…”

Section: Diatomic Catalyst Without Carbon Carriermentioning

confidence: 99%

“…The highly electron-rich N-doped carbon effectively promotes the point-to-point electron transfer in the structure. [103]…”

Section: Adjust the Overall Density Of Atomsmentioning

confidence: 99%

“…In fact, for CoNC and CuNC, the density of states near the Fermi level is close to zero (see Figure 54a), while in the bimetallic Co/CuNC compound, there is a sharp peak just at the Fermi level. [21,103] The corresponding electronic state is mainly confined to the metal site (see Figure 54b), which facilitates the adsorbate extraction of electrons from the Co/ CuNC catalyst. The absolute band arrangement in Co/ CuNC varies synergistically with the type of individual metal and catalyst.…”

Section: Adjust the Electronic And Spatial Structuresmentioning

confidence: 99%

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Recent Progress of Diatomic Catalysts: General Design Fundamentals and Diversified Catalytic Applications

2022

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In recent years, some experiments and theoretical work have pointed out that diatomic catalysts not only retain the advantages of monoatomic catalysts, but also introduce a variety of interactions, which exceed the theoretical limit of catalytic performance and can be applied to many catalytic fields. Here, the interaction between adjacent metal atoms in diatomic catalysts is elaborated: synergistic effect, spacing enhancement effect (geometric effect), and electronic effect. With regard to the classification and characterization of various new diatomic catalysts, diatomic catalysts are classified into four categories: heteronuclear/homonuclear, with/without carbon carriers, and their characterization measures are introduced and explained in detail. In the aspect of preparation of diatomic catalysts, the widely used atomic layer deposition method, metal–organic framework derivative method, and simple ball milling method are introduced, with emphasis on the formation mechanism of diatomic catalysts. Finally, the effective control strategies of four diatomic catalysts and the key applications of diatomic catalysts in electrocatalysis, photocatalysis, thermal catalysis, and other catalytic fields are given.

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Construction of core-shell Fe3O4@GO-CoPc photo-Fenton catalyst for superior removal of tetracycline: The role of GO in promotion of H2O2 to •OH conversion

Cited by 33 publications

References 62 publications

One-Step Carbonization Synthesis of Magnetic Biochar with 3D Network Structure and Its Application in Organic Pollutant Control

One-Step Carbonization Synthesis of Magnetic Biochar with 3D Network Structure and Its Application in Organic Pollutant Control

H₂O₂ assisted photocatalysis over Fe‐MOF modified BiOBr for degradation of RhB

Recent Progress of Diatomic Catalysts: General Design Fundamentals and Diversified Catalytic Applications

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Construction of core-shell Fe3O4@GO-CoPc photo-Fenton catalyst for superior removal of tetracycline: The role of GO in promotion of H2O2 to •OH conversion

Cited by 33 publications

References 62 publications

One-Step Carbonization Synthesis of Magnetic Biochar with 3D Network Structure and Its Application in Organic Pollutant Control

One-Step Carbonization Synthesis of Magnetic Biochar with 3D Network Structure and Its Application in Organic Pollutant Control

H2O2 assisted photocatalysis over Fe‐MOF modified BiOBr for degradation of RhB

Recent Progress of Diatomic Catalysts: General Design Fundamentals and Diversified Catalytic Applications

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H₂O₂ assisted photocatalysis over Fe‐MOF modified BiOBr for degradation of RhB