Self-assembled synthesis of recyclable g-C3N4/NH2-MIL-53(Fe) aerogel for enhanced photocatalytic degradation of organic pollutants

He, Xin; Wang, Linlin; Sun, Songmei; Yang, Xuechun; Tian, Huayu; Xia, Zijie; Li, Xiaoliang; Yan, Xiao-Bo; Pu, Xianjuan; Jiao, Z.

doi:10.1016/j.jallcom.2023.169391

Cited by 20 publications

(6 citation statements)

References 51 publications

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“…Exogenous N doping was achieved by coupling with NH 2 -MIL-53(Fe) through the addition of g-C 3 N 4 according to Liu et al [34]. g-C 3 N 4 @NH 2 -MIL-53(Fe) contains the characteristic peak of NH 2 -MIL-53(Fe) and a carbon peak around 27 • , which is in agreement with the pattern reported by He et al [37]. This indicates the successful coupling of NH 2 -MIL-53(Fe) with g-C 3 N 4 and the fact that they have successfully formed heterojunctions between the internal components [14].…”

Section: Xrd and Sem Ofsupporting

confidence: 83%

“…FexCN-650 maintained the spindle morphology of precursor NH 2 -MIL-53(Fe) after pyrolysis (Figure 4b). Introduction of externally added nitrogen source g-C 3 N 4 effectively prevents the aggregation of pyrolysis products and significantly improves the dispersion of the fusiform particle on the carbon layer [37]. Introduction of externally added nitrogen source g-C 3 N 4 also leads to a better retention of morphology of the precursor during the pyrolysis process (Figure 4c).…”

Section: Xrd and Sem Of X-fe@cnmentioning

confidence: 99%

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Multi-Heteroatom Doped Fe@CN Activation Peroxomonosulfate for the Removal of Trace Organic Contaminants from Water: Optimizing Fabrication and Performance

Chen,

Ren,

Liu

et al. 2023

Water

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Modification of catalysts by multi-heteroatom doping (S, P, B) is an effective way to improve the peroxomonosulfate activation performance of catalysts. In recent years, highly toxic and persistent trace organic contaminants have been frequently detected in water. Consequently, we proposed the advanced oxidation processes of peroxomonosulfate activated by multi-heteroatom doped Fe@CN (X-Fe@CN) to eliminate trace organic contaminants. The physical phases of X-Fe@CN and its precursors were characterized by X-ray diffraction and scanning electron microscopy. In evaluating the catalytic properties and iron ion leaching of X-Fe@CN-activated PMS for the removal of dicamba and atenolol, B-Fe@CN and PB-Fe@CN were selected and optimized. The active sites of the catalysts were characterized by X-ray photoelectron spectroscopy and Raman. The pathways of PMS activation by B-Fe@CN and PB-Fe@CN were identified in combination with electron paramagnetic resonance and electrochemical experiments. Defects, O-B-O and pyrrolic nitrogen on the surface of B-Fe@CN could adsorb and activate PMS to produce SO4•−, ·OH and 1O2. Further doping with P enhanced the electron transfer on the catalyst surface, thus accelerating the activation of peroxomonosulfate. This study compared the effects of multi-heteroatom modifications and further demonstrated the synergistic effect between P and B, which can provide a theoretical basis for the selection of multi-heteroatom doped catalysts in water treatment.

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Section: Xrd and Sem Ofsupporting

confidence: 83%

Section: Xrd and Sem Of X-fe@cnmentioning

confidence: 99%

Multi-Heteroatom Doped Fe@CN Activation Peroxomonosulfate for the Removal of Trace Organic Contaminants from Water: Optimizing Fabrication and Performance

Chen,

Ren,

Liu

et al. 2023

Water

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“…Specially, the combination of Fe-MOFs with a photocatalyst, such as g-C3N4, can enhance the visible-light adsorption regions, increase the specific surface areas and prolong the lifetime of the charge carriers. Therefore, the porous g-C3N4/NH2-MIL-53(Fe) aerogel showed excellent recyclability and a higher photocatalytic performance than pure g-C3N4 nanosheets [77].…”

Section: Fe-mof Composite Gelmentioning

confidence: 95%

Metal–Organic Framework Gels for Adsorption and Catalytic Detoxification of Chemical Warfare Agents: A Review

Zhang,

Tao

2023

Gels

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Chemical warfare agents (CWAs) have brought great threats to human life and social stability, and it is critical to investigate protective materials. MOF (metal–organic framework) gels are a class with an extended MOF architecture that are mainly formed using metal–ligand coordination as an effective force to drive gelation, and these gels combine the unique characteristics of MOFs and organic gel materials. They have the advantages of a hierarchically porous structure, a large specific surface area, machinable block structures and rich metal active sites, which inherently meet the requirements for adsorption and catalytic detoxification of CWAs. A series of advances have been made in the adsorption and catalytic detoxification of MOF gels as chemical warfare agents; however, overall, they are still in their infancy. This review briefly introduces the latest advances in MOF gels, including pure MOF gels and MOF composite gels, and discusses the application of MOF gels in the adsorption and catalytic detoxification of CWAs. Meanwhile, the influence of microstructures (pore structures, metal active site, etc.) on the detoxification performance of protective materials is also discussed, which is of great significance in the exploration of high-efficiency protective materials. Finally, the review looks ahead to next priorities. Hopefully, this review can inspire more and more researchers to enrich the performance of MOF gels for applications in chemical protection and other purification and detoxification processes.

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“…The possible mechanisms of the photo-Fenton self-cleaning of the Fe-CP aerogel are exhibited in Figure 8. Under the visible light irradiation, the FexOy in the Fe-CP aerogel can produce electrons ( − e) and holes (h + ) [48,49]. Subsequently, the photogenerated h + could react with H2O and form hydroxyl radicals (•OH).…”

Section: Photocatalytic Capacity Of Fe-cp Aerogelmentioning

confidence: 99%

Preparation of Bioaerogel from Iron-Rich Microalgae for the Removal of Water Pollutants

Niu,

Si,

Chen

et al. 2024

Processes

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Microalgae-based materials have gained significant attention considering their rich resources, cost-effectiveness, and environmental friendliness. Herein, iron-rich microalgae (Chlorella pyrenoidosa, CP) were treated by hydrothermal reaction under alkaline conditions to remove the protoplast and obtain a hollow shell with an FexOy core inside. Then, the iron-rich microalgae-based aerogel (Fe-CP aerogel) was fabricated through a freeze-drying process. The as-prepared Fe-CP aerogel exhibited superior adsorption performance, and the maximum adsorption quantity for Cu2+ could reach 208.3 mg/g due to the synergistic adsorption of the hollow shell of CP cells and FexOy core. The Fe-CP aerogel also possessed super-hydrophilicity and displayed high separation efficiency (over 99%) when used for separating different oil/water emulsions. Moreover, the existence of FexOy endowed the Fe-CP aerogel with photo-Fenton activity, thus exhibiting excellent antifouling performance. The prepared Fe-CP aerogel could be considered an ideal adsorbent, with green, efficient, low-cost, and regenerative properties, and has the potential for the practical treatment of wastewater.

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Self-assembled synthesis of recyclable g-C3N4/NH2-MIL-53(Fe) aerogel for enhanced photocatalytic degradation of organic pollutants

Cited by 20 publications

References 51 publications

Multi-Heteroatom Doped Fe@CN Activation Peroxomonosulfate for the Removal of Trace Organic Contaminants from Water: Optimizing Fabrication and Performance

Multi-Heteroatom Doped Fe@CN Activation Peroxomonosulfate for the Removal of Trace Organic Contaminants from Water: Optimizing Fabrication and Performance

Metal–Organic Framework Gels for Adsorption and Catalytic Detoxification of Chemical Warfare Agents: A Review

Preparation of Bioaerogel from Iron-Rich Microalgae for the Removal of Water Pollutants

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