Photocatalytic decontamination of tetracycline and Cr(VI) by a novel α-FeOOH/FeS2 photocatalyst: One-pot hydrothermal synthesis and Z-scheme reaction mechanism insight

Guo, Yihang; Li, Chenxi; Gong, Zhiheng; Guo, Yaoping; Wang, Xuegang; Gao, Bai; Qin, Wenjing; Wang, Guanghui

doi:10.1016/j.jhazmat.2020.122580

Cited by 102 publications

(23 citation statements)

References 67 publications

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“…With continuous removal of functional groups and ring-opening, the intermediates were assumed to be decomposed into smaller molecules such as H 2 O, CO 2 , NH 4 + , etc. [82] Three different studies showed quite similar results i. e., ROS species first caused oxidation accompanied by ring-opening and lastly followed by subsequent elimination of the carbonyl and amino groups. Finally, the smaller intermediates were proposed to be converted into CO 2 and H 2 O.…”

Section: Degradation Pathway For Most Commonly Used Antibioticsmentioning

confidence: 82%

“…Guo et al [82] proposed two pathways for TC degradation based on Liquid chromatography-Mass spectroscopy (LC-MS) measurements where one pathway proceeds via photogenerated holes as active ROS whether the other involved the superoxide radicals. These photogenerated holes were assumed to gain electrons from TC moiety leading to the cleavage of the NÀ C bond followed by N-demethylation and subsequent shedding of amino and acetyl groups.…”

Section: Degradation Pathway For Most Commonly Used Antibioticsmentioning

confidence: 99%

“…This Z-scheme structure could be attributed to the better photo-absorption properties and the improved separation of photo-induced charge carriers causing better performance. [170] Core-shell Z scheme heterostructure Fe 2 O 3 /CuBi 2 O 4 (Fe 2 O 3 / CBO) that was synthesized via a one-step hydrothermal method, exhibited 80 % photocatalytic degradation of TC in 120 min. The direct Z-scheme mechanism had been anticipated for the enhancement of the photocatalytic activity promoting efficient charge carrier separation, reducing the charge recombination, and additionally possessed strong reduction capabilities.…”

Section: Fe Based Heterostructurementioning

confidence: 99%

See 2 more Smart Citations

Advancement towards Antibiotic Remediation: Heterostructure and Composite materials

2021

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Today's world is on the verge of antibiotic pollution by humans, veterinary therapeutics polluting our water body, and on account of the scarcity in advanced water treatment techniques in the wastewater treatment plants (WWTPs). It is of enormous importance to have an insight into various kinds of antibiotics and their attributes. The primary aspects of antimicrobial resistance caused by antibiotic pollution in the environment have been briefly enlightened. Here the nature and occurrence of antibiotics accumulation in the environment and a world pollution scenario have been illustrated. Adsorption and photocatalysis are the most standard techniques used for remediation. The well‐known nano photocatalyst heterostructure materials Titanium dioxide (TiO2), bismuth (Bi) materials are also utilized as the main frame materials for the composites and heterostructures. Alternatively, the porous carbon‐based materials and metal‐organic framework (MOF) materialsare entitled to their excellent adsorption capability. This review portrays comprehensive insight into the advances and breakthroughs made so far by different heterostructures and nanocomposite materials for antibiotics removal and provides a road map to future researchers towards a more efficient water treatment system.

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Section: Degradation Pathway For Most Commonly Used Antibioticsmentioning

confidence: 82%

Section: Degradation Pathway For Most Commonly Used Antibioticsmentioning

confidence: 99%

Section: Fe Based Heterostructurementioning

confidence: 99%

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Advancement towards Antibiotic Remediation: Heterostructure and Composite materials

2021

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“…A low level of leaching out of iron ion ensures that fiber C 2 -2S is reusable when decolorizing MB aqueous solution. According to the related literature, the peaks at 20.4 and 26.1° are caused by FeOOH [ 31 , 32 ]; the peak at 24.6° by Fe 2 O 3 [ 33 ]; the peak at 28.8° by FeO [ 34 ]; the peak at 34.2° by Fe 3 O 4 [ 35 ]. This result demonstrates that the iron species supported by PTFE/P(AA-co-HEMA) composite fiber is mainly composed of the iron oxides mentioned above.…”

Section: Resultsmentioning

confidence: 99%

Iron Species-Supporting Hydrophobic and Nonswellable Polytetrafluoroethylene/Poly(acrylic acid-co-hydroxyethyl methacrylate) Composite Fiber and Its Stable Catalytic Activity for Methylene Blue Oxidative Decolorization

Ren

2021

Polymers

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Polytetrafluoroethylene emulsion was ultrasonically mixed with an extremely spinnable poly(acrylic acid-co-hydroxyethyl methacrylate) solution to get a dispersion with good spinnability, and the obtained dispersion was then wet-spun into water-swellable fiber. Crosslinking agents and iron species were simultaneously introduced into the water-swellable fiber through simple impregnation and water swelling. A composite fiber with Fenton reaction-catalyzing function was then fabricated by sequentially conducting crosslinking and sintering treatment. Due to crosslinking-induced good resistance to water swelling and PTFE component-induced hydrophobicity, the composite fiber showed a highly stable activity to catalyze H2O2 to oxidatively decolorize methylene blue (MB). Within nine cycles, the composite fiber could decolorize more than 90% of MB within one minute in the presence of H2O2 and did not show any attenuation in MB decolorization efficiency. The composite fiber still could reduce the total organic carbon of MB aqueous solution from 18.3 to 10.3 mg/L when used for the ninth time. Therefore, it is believable that the prepared fiber has good and broad application prospects in the field of dye wastewater treatment.

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“…The precipitation method opens the floodgates to remove fluoride. Adsorption, ion exchange, electric flocculation, membrane technology, solvent extraction, and electro-adsorption were applied to remove fluoride from nature, life, and industries [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Ion exchange needs ion-exchange resin, which makes it easy to exchange fluoride in an ion exchange column.…”

mentioning

confidence: 99%

Nanomaterials in Water Applications: Adsorbing Materials for Fluoride Removal

et al. 2021

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Photocatalytic decontamination of tetracycline and Cr(VI) by a novel α-FeOOH/FeS2 photocatalyst: One-pot hydrothermal synthesis and Z-scheme reaction mechanism insight

Cited by 102 publications

References 67 publications

Advancement towards Antibiotic Remediation: Heterostructure and Composite materials

Advancement towards Antibiotic Remediation: Heterostructure and Composite materials

Iron Species-Supporting Hydrophobic and Nonswellable Polytetrafluoroethylene/Poly(acrylic acid-co-hydroxyethyl methacrylate) Composite Fiber and Its Stable Catalytic Activity for Methylene Blue Oxidative Decolorization

Nanomaterials in Water Applications: Adsorbing Materials for Fluoride Removal

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