Piezoelectric-Fenton degradation and mechanism study of Fe2O3/PVDF-HFP porous film drove by flowing water

Chai, Mengnan; Tong, Wangshu; Wang, Wenwen; Chen, Zhensheng; An, Yuan‐cheng; Zhang, Yihe

doi:10.1016/j.jhazmat.2022.128446

Cited by 71 publications

(28 citation statements)

References 33 publications

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“…They could be used in wound dressing materials to stimulate the movements through the different healing phases in acute and chronic wounds [ 43 ]. Moreover, some characteristics of IONPs including spacious surface, high specific area, and porous structure give the Fe 2 O 3 -based nanocomposites and hydrogel higher absorption capacity, water, and oxygen permeability [ 44 , 45 , 46 ]. These special features of IONPs can introduce an applicable wound dressing for biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Role of Iron Oxide (Fe2O3) Nanocomposites in Advanced Biomedical Applications: A State-of-the-Art Review

et al. 2022

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Nanomaterials have demonstrated a wide range of applications and recently, novel biomedical studies are devoted to improving the functionality and effectivity of traditional and unmodified systems, either drug carriers and common scaffolds for tissue engineering or advanced hydrogels for wound healing purposes. In this regard, metal oxide nanoparticles show great potential as versatile tools in biomedical science. In particular, iron oxide nanoparticles with different shape and sizes hold outstanding physiochemical characteristics, such as high specific area and porous structure that make them idoneous nanomaterials to be used in diverse aspects of medicine and biological systems. Moreover, due to the high thermal stability and mechanical strength of Fe2O3, they have been combined with several polymers and employed for various nano-treatments for specific human diseases. This review is focused on summarizing the applications of Fe2O3-based nanocomposites in the biomedical field, including nanocarriers for drug delivery, tissue engineering, and wound healing. Additionally, their structure, magnetic properties, biocompatibility, and toxicity will be discussed.

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Section: Introductionmentioning

confidence: 99%

Role of Iron Oxide (Fe2O3) Nanocomposites in Advanced Biomedical Applications: A State-of-the-Art Review

et al. 2022

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“…The dramatically enhanced and accelerated conversions of BP in the microreactor of the droplet could be generated from the concentrated reactive species (such as • OH) at the water–air interface . This could also contribute to the concentration of reaction species at the water–air interface for enhanced conversions . Thus, deeper online examinations to clear the conversion behaviors across the water–air interface are required.…”

Section: Resultsmentioning

confidence: 99%

“…. This suffers from the nonideal environmental conditions with series of reactive species (such as • OH, O 3 , SO 2 , and NO x ). ,, In addition, a particular condensed phase with ionic strength and salt molality would be outside the bounds of limiting laws . (2) The construction of the air–water interface model is challenging, meeting both droplets’ particular surface tension/energy and ease of detections. , Traditionally, the liquid/atmosphere chemistry is simulated in flask or quartz cells, being different from real processes in water droplets. , Recently, field-induced droplet ionization mass spectrometry (MS) has been used to generate “wall-less” reactors of acoustically levitated droplets for the examinations. − It is a great improvement on modeling of reactions at the water–air interface, while the further dynamic examinations are still expected due to the following limitation: (3) the real-time and in situ dynamic monitoring of reactions in droplets is hard to be achieved, given only instantaneous information is obtained through one-time sampling of the whole droplet.…”

Section: Introductionmentioning

confidence: 99%

“…10 This suffers from the nonideal environmental conditions with series of reactive species (such as • OH, O 3 , SO 2 , and NO x ). 2,11,12 In addition, a particular condensed phase with ionic strength and salt molality would be outside the bounds of limiting laws. 7 (2) The construction of the air− water interface model is challenging, meeting both droplets' particular surface tension/energy and ease of detections.…”

Section: ■ Introductionmentioning

confidence: 99%

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Real-Time Studies of Chemical Conversions across the Air–Water Interface of a Single Droplet: Generating Secondary Pollutants under Visible Light

Zhang

Sun

Yin

et al. 2022

ACS Sustainable Chem. Eng.

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Pollutant conversions at the air−water interface of a single droplet are crucial for obtaining accurate predictions on environment quality. Herein, droplet ESI MS was carried out to understand the photochemical conversions of pollutants across the water−air interface of a single droplet. A single droplet was kept on a Y-shaped Cu electrode, realizing the in situ electrospray ionization for the examinations. By applying high voltage, in situ MS detection of a droplet was carried out layer-by-layer, from the water−air interface to the inner droplet. By droplet ESI MS, secondary pollutants in a single droplet were observed under visible-light irradiation, while no obvious conversion was recorded in the bulk solution, indicating the complicated and active conversions in droplets. More significantly, different pollutant conversions at the water−air interface and inner droplet were recorded by the dynamic monitoring via droplet ESI MS detections layer-by-layer. By examining the observed dimer and radical intermediates, photochemical mechanisms across the water−air interface were proposed. By providing an effective pathway for single-droplet examinations, this work enlarges applications of ambient MS into environment studies.

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“…A flexible porous film based on poly(vinylidene fluoride)-hexafluoro propylene enhanced with Fenton fillers (Fe 2 O 3 /PVDF-HFP). [13] Fe 2 O 3 nanoparticles enhance the decompose H 2 O 2 generated by the piezoelectric film, and Fe 3 + /Fe 2 + cycle in the Fenton process accelerates under the piezoelectric field, promoting the Fenton reaction for 6.9 % degradation improvement. These reported piezo-Fenton systems have demonstrated the unique advantages of the piezo-Fenton strategy, but unfortunately, they often require external H 2 O 2 /iron ions or face the problem of iron leaching in acidic environments during ultrasound treatment, which restricted their application conditions and might cause secondary pollution of iron ions.…”

Section: Introductionmentioning

confidence: 99%

A Piezo‐Fenton System with Rapid Iron Cycling and Hydrogen Peroxide Self‐Supply Driven by Ultrasound

Xiao

Liu

et al. 2022

Chemistry A European J

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The piezo‐Fenton system has attracted attention not only because it can enhance the Fenton reaction activity by mechanical energy input, but also because it is expected to realize a class of stimuli‐responsive advanced oxidation systems by regulating energy input and hydrogen peroxide self‐supply, thus greatly enriching the application possibilities of Fenton chemistry. In this work, a series of Fe‐doped g‐C3N4 (g‐C3N4‐Fe) as a piezo‐Fenton system were synthesized where the iron stably immobilized through Fe−N interaction. The piezo‐induced electrons generate on g‐C3N4 matrix support the conversion of Fe(III) to Fe(II) and promote rate‐limiting step of Fenton reaction. With the optimal Fe loading, g‐C3N4‐0.5Fe can achieve methylene blue (MB) degradation under ultrasonic treatment with first‐order kinetic rate constants of 75×10−3 min−1. Most importantly, the g‐C3N4‐Fe can maintain good catalytic activity in a wide pH range (pH=2.0∼9.0) and be cyclic used without iron leaching to solution (<0.001 μg ⋅ L−1), overcoming the disadvantage of traditional Fe‐based Fenton catalysts that can only be applied under acidic conditions and prone to secondary pollution. In addition, g‐C3N4‐0.5Fe also exhibits antibacterial properties of Escherichia coli and Staphylococcus aureus under ultrasound. Hydroxyl radicals mainly contribute to the degradation of MB and the sterilization process. Our work is an attempt to clarify the role of g‐C3N4‐Fe in the conversion of mechanical energy to ROS and provide inspirations for the piezo‐Fenton system design.

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Piezoelectric-Fenton degradation and mechanism study of Fe2O3/PVDF-HFP porous film drove by flowing water

Cited by 71 publications

References 33 publications

Role of Iron Oxide (Fe2O3) Nanocomposites in Advanced Biomedical Applications: A State-of-the-Art Review

Role of Iron Oxide (Fe2O3) Nanocomposites in Advanced Biomedical Applications: A State-of-the-Art Review

Real-Time Studies of Chemical Conversions across the Air–Water Interface of a Single Droplet: Generating Secondary Pollutants under Visible Light

A Piezo‐Fenton System with Rapid Iron Cycling and Hydrogen Peroxide Self‐Supply Driven by Ultrasound

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