Synthesis of Fe 3 O 4 /g-C 3 N 4 nanocomposites and their application in the photodegradation of 2,4,6-trichlorophenol under visible light

Yang, Jing; Chen, Huihui; Gao, Junhua; Yan, Tingting; Zhou, Fengya; Shen, Chen; Bi, Wentao

doi:10.1016/j.matlet.2015.10.130

Cited by 71 publications

(26 citation statements)

References 41 publications

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“…In a similar work, Jia et al fabricated Fe3O4/g-C3N4 via a hydrothermal route and studied its visible light photocatalytic performance towards RhB decomposition [146]. In both studies, higher photocatalytic performance was observed over the nanocomposites compared to Fe3O4 and g-C3N4 individually, reaching 95.5% in 60 min [146] and 96.5% in 100 min [77] for RhB and 2,4,6-TCP, respectively. Coupling g-C3N4 with Fe3O4 improved charge separation since only g-C3N4 is excited by visible light, and the electrons in the conduction band quickly transfer to Fe3O4, where they are captured by oxygen to form the radical species.…”

Section: Magnetite (Fe 3 O 4 )-Based Magnetic Photocatalystsmentioning

confidence: 99%

“…Owing to its meta-free nature, polymeric structure, non-toxicity, good visible light response, good photocatalytic properties, and high thermal and chemical stability, tailoring graphitic carbon nitride (g-C3N4)-based magnetic photocatalysts is an important exploit towards potential practical application of these materials in water treatment. Using a combination of calcination and coprecipitation, Yang and coworkers prepared Fe3O4/g-C3N4 nanocomposite photocatalyst and probed its photocatalytic behaviour towards 2,4,6-trichlorophenol (2,4,6-TCP) under visible light illumination [77]. In a similar work, Jia et al fabricated Fe3O4/g-C3N4 via a hydrothermal route and studied its visible light photocatalytic performance towards RhB decomposition [146].…”

Section: Magnetite (Fe 3 O 4 )-Based Magnetic Photocatalystsmentioning

confidence: 99%

“…Therefore, the holes and electrons occupy different locations in the nanocomposite. Moreover, magnetic separation was made possible by the presence of the Fe3O4 nanoparticles [77,146].…”

Section: Magnetite (Fe 3 O 4 )-Based Magnetic Photocatalystsmentioning

confidence: 99%

“…Using a combination of calcination and co-precipitation, Yang and coworkers prepared Fe 3 O 4 /g-C 3 N 4 nanocomposite photocatalyst and probed its photocatalytic behaviour towards 2,4,6-trichlorophenol (2,4,6-TCP) under visible light illumination [77]. In a similar work, Jia et al fabricated Fe 3 O 4 /g-C 3 N 4 via a hydrothermal route and studied its visible light photocatalytic performance towards RhB decomposition [146].…”

Section: Magnetite (Fe 3 O 4 )-Based Magnetic Photocatalystsmentioning

confidence: 99%

“…), etc. have been successfully coupled with various photocatalysts to induce magnetic behaviour in the composite material and allow easy magnetic separation [39,[77][78][79]. Since the photocatalyst remains powdery upon incorporation of the magnetic nanoparticles, this does not compromise its surface area and the distribution of the photocatalyst in the aquatic medium.…”

Section: Introductionmentioning

confidence: 99%

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Advances in Magnetically Separable Photocatalysts: Smart, Recyclable Materials for Water Pollution Mitigation

Mamba

Mishra

2016

Catalysts

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Organic and inorganic compounds utilised at different stages of various industrial processes are lost into effluent water and eventually find their way into fresh water sources where they cause devastating effects on the ecosystem due to their stability, toxicity, and non-biodegradable nature. Semiconductor photocatalysis has been highlighted as a promising technology for the treatment of water laden with organic, inorganic, and microbial pollutants. However, these semiconductor photocatalysts are applied in powdered form, which makes separation and recycling after treatment extremely difficult. This not only leads to loss of the photocatalyst but also to secondary pollution by the photocatalyst particles. The introduction of various magnetic nanoparticles such as magnetite, maghemite, ferrites, etc. into the photocatalyst matrix has recently become an area of intense research because it allows for the easy separation of the photocatalyst from the treated water using an external magnetic field. Herein, we discuss the recent developments in terms of synthesis and photocatalytic properties of magnetically separable nanocomposites towards water treatment. The influence of the magnetic nanoparticles in the optical properties, charge transfer mechanism, and overall photocatalytic activity is deliberated based on selected results. We conclude the review by providing summary remarks on the successes of magnetic photocatalysts and present some of the future challenges regarding the exploitation of these materials in water treatment.

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Section: Magnetite (Fe 3 O 4 )-Based Magnetic Photocatalystsmentioning

confidence: 99%

Section: Magnetite (Fe 3 O 4 )-Based Magnetic Photocatalystsmentioning

confidence: 99%

“…Therefore, the holes and electrons occupy different locations in the nanocomposite. Moreover, magnetic separation was made possible by the presence of the Fe3O4 nanoparticles [77,146].…”

Section: Magnetite (Fe 3 O 4 )-Based Magnetic Photocatalystsmentioning

confidence: 99%

Section: Magnetite (Fe 3 O 4 )-Based Magnetic Photocatalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Advances in Magnetically Separable Photocatalysts: Smart, Recyclable Materials for Water Pollution Mitigation

Mamba

Mishra

2016

Catalysts

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Visible light photodegradation of 4‐nitrophenol by new high‐performance and easy recoverable Fe₃O₄/Ag₂O‐LDH hybrid photocatalysts

Dinari

Dadkhah

2021

Applied Organom Chemis

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Till now, water contaminant photodegradation has been the most influential method to remove low but dangerous concentrations of pollutants. Herein, a green method was employed to enhance the photocatalytic activity of ZnAl-LDH through depositing Ag and magnetite nanoparticles on the surface of layered double hydroxide (LDH) sheets. The structural and electrochemical characterization of as-prepared Zn 3 Al-CO 3 (ZA-LDH) and Fe 3 O 4 /Ag 2 O-LDH (M 10 A 5 -LDH) composite was determined by X-ray diffraction (XRD) analysis, Brunauer-Emmett-Teller (BET) theory, field emission scanning electron microscopy (FESEM) along with energy-dispersive X-ray spectroscopy (EDX) mapping, UV-vis diffuse reflectance spectra, photoluminescence spectra, and transient photocurrent response. All of the analyses confirmed the photoresponse enhancement of the M 10 A 5 -LDH compared with virgin LDH. The mineralization of p-nitrophenol (PNP) under visible light revealed that the photodegradation rate of composite (0.02 min À1 ) is fourfold more significant than that of the bare ZA-LDH (0.005 min À1 ). The active radical capturing tests exhibited that h + , •OH, and •O 2 À play substantial roles in PNP degradation, respectively. The potential photodegradation mechanism involves the charge transfer from Fe 3 O 4 and Ag 2 O to LDH, producing active radicals for the degradation process. K E Y W O R D S 4-nitrophenol, easy recoverable, Fe 3 O 4 /Ag 2 O-LDH, magnetic nanocomposite, photodegradation | INTRODUCTIONAs the most toxic mono-nitrophenol, 4-nitrophenol (4-NP) is a severe threat to ecological systems, and even 20 mg L À1 of it could raise the risk of cancer. [1] The most common sources of 4-NP in wastewaters are pesticides, medicines, dyes, explosives, leather coloring agents, and plastics. [2,3] It also can deposit in the soil as a hydrolysis product of organophosphorus insecticides like parathion and methyl parathion. [4] To minimize the amount of 4-NP in the environment, many different techniques with chemical, biological, and physical approaches were developed. Even though all the accomplishments have been made using these technologies, high-energy consumption, secondary contamination, and low proficiency are the weaknesses of these methods. Therefore, advanced oxidation processes (AOPs) are introduced as an alternative, which has no harmful product, has no expensive

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Effect of thickness and microstructure of TiO₂ shell on photocatalytic performance of magnetic separable Fe₃O₄/SiO₂/mTiO₂ core‐shell composites

Wang

Yang

et al. 2017

Physica Status Solidi (a)

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Here, unique Fe3O4/SiO2/mTiO2 (FST) composites were fabricated, which are composed of a Fe3O4 core with a strong response to magnetic field, an intermediate SiO2 layer as an electronic barrier, and an outer mesoporous TiO2 (mTiO2) as the active layer for degradation of organic contaminants. The distinctive approach involved TiO2 shell coating on the surface of Fe3O4/SiO2 (FS) particle using a sol–gel method, followed by the crystallization and mesopore‐formation of TiO2 through solvothermal treatment. By changing the dosage of tetrabutyl titanate (TBOT), the thickness and microstructure of TiO2 layer were regulated. Among all as‐prepared FST composites, the FST composite that was prepared with 0.6 ml TBOT (FST‐0.6) possessed a good microstructure and a large specific surface area, and exhibited superior photocatalytic activity toward the degradation of methylene blue (MB) solution. Moreover, recovered FST‐0.6 composite with the help of an appropriate magnetic field maintained the activity without significant decline during multiple photocatalytic tests. Accordingly, a rational mechanism was proposed to explain why the FST‐0.6 composite showed excellent photocatalytic performance.

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Synthesis of Fe 3 O 4 /g-C 3 N 4 nanocomposites and their application in the photodegradation of 2,4,6-trichlorophenol under visible light

Cited by 71 publications

References 41 publications

Advances in Magnetically Separable Photocatalysts: Smart, Recyclable Materials for Water Pollution Mitigation

Advances in Magnetically Separable Photocatalysts: Smart, Recyclable Materials for Water Pollution Mitigation

Visible light photodegradation of 4‐nitrophenol by new high‐performance and easy recoverable Fe₃O₄/Ag₂O‐LDH hybrid photocatalysts

Effect of thickness and microstructure of TiO₂ shell on photocatalytic performance of magnetic separable Fe₃O₄/SiO₂/mTiO₂ core‐shell composites

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Synthesis of Fe 3 O 4 /g-C 3 N 4 nanocomposites and their application in the photodegradation of 2,4,6-trichlorophenol under visible light

Cited by 71 publications

References 41 publications

Advances in Magnetically Separable Photocatalysts: Smart, Recyclable Materials for Water Pollution Mitigation

Advances in Magnetically Separable Photocatalysts: Smart, Recyclable Materials for Water Pollution Mitigation

Visible light photodegradation of 4‐nitrophenol by new high‐performance and easy recoverable Fe3O4/Ag2O‐LDH hybrid photocatalysts

Effect of thickness and microstructure of TiO2 shell on photocatalytic performance of magnetic separable Fe3O4/SiO2/mTiO2 core‐shell composites

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Product

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Visible light photodegradation of 4‐nitrophenol by new high‐performance and easy recoverable Fe₃O₄/Ag₂O‐LDH hybrid photocatalysts

Effect of thickness and microstructure of TiO₂ shell on photocatalytic performance of magnetic separable Fe₃O₄/SiO₂/mTiO₂ core‐shell composites