Micro-nano-sized polytetrafluoroethylene (teflon) particles as a model of plastic pollution detection in living organisms

Karpenko, A. A.; Odintsov, V. S.; Istomina, Aleksandra

doi:10.1007/s11356-021-16487-6

Cited by 9 publications

(2 citation statements)

References 36 publications

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“…The spectral lines (patterns) of 1379, 732, 383, and 290 cm −1 are more prominent, which are caused by the symmetric stretching of the CF 2 bond, the symmetric stretching of the C−C bond, and the deformation and torsional vibration of the CF bond, respectively. 23,24 Furthermore, the positions of characteristic peaks remain unchanged before and after polarization. The Fourier transform infrared spectroscopy (FTIR) spectra of PTFE powder before and after polarization are displayed in Figure 2b.…”

Section: Resultsmentioning

confidence: 99%

Contact-Electro-Catalysis Through Electret Behavior to Facilitate Electron Transfer

Li,

Tong,

Shi

et al. 2024

ACS Appl. Mater. Interfaces

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Contact-electro-catalysis (CEC) usually uses polymer dielectrics as its catalysts under mechanical stimulation conditions, which although has a decent catalytic dye degradation effect still warrants performance improvement. A carrier separation promotion strategy based on an internal electric field by polarization can effectively improve ferroelectric material performance in photocatalysis and piezocatalysis. Therefore, carrier separation as a necessary process of CEC also can be promoted and is largely expected to improve CEC performance theoretically. However, the carrier separation enhancement by the internal electric field strategy has not been achieved in the CEC experiment yet, because of the difficulty of building an internal electric field in an inert polymer dielectric. Herein, a polytetrafluoroethylene (PTFE) dielectric was charged through an electret process, which was believed to establish an internal electric field for CEC catalysts proved by KPFM, XPS, and triboelectric nanogenerator voltage output analysis. The fastest degradation rate of methyl orange reached over 90% at 1.5 h, while the hydroxyl free radical (•OH) yield of the PTFE electret was nearly three times that of the original PTFE. Density functional theory (DFT) calculations verified that the potential barrier of interatomic electron transfer between PTFE and H 2 O was reduced by 37% under the internal electric field. The electret strategy used herein to optimize the PTFE catalyst provides a base for the use of other general plastics in CEC and facilitates the production of easily prepared, easily recyclable, and inexpensive polymer dielectric catalysts that can promote large-scale pollutant degradation via CEC.

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Section: Resultsmentioning

confidence: 99%

Contact-Electro-Catalysis Through Electret Behavior to Facilitate Electron Transfer

Li,

Tong,

Shi

et al. 2024

ACS Appl. Mater. Interfaces

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show abstract

“…With more and more studies on targeted drug delivery systems with high efficiency and low toxicity by scholars, nanotechnology has shown a wide application prospect in the field of medicine and pharmaceuticals. Nanomedicines refer to drugs made by nanoscale polymer nanoparticles (NPs), nanospheres (NS), and nano-capsules (NC) as targeting carriers to combine with drugs (24)(25)(26). Since the drug acts on the human body, the carrier material is required to be non-toxic, biocompatible, and biodegradable.…”

Section: Discussionmentioning

confidence: 99%

Targeted Therapy of Tuberculous Meningitis in Rats with Methylprednisolone Composite Nanoparticles

Dai¹,

Guan²,

Qin³

2022

Cell Mol Biol (Noisy-le-grand)

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Degradation of micro-nano-sized polytetrafluoroethylene and acrylic fluorinated copolymer particles in the periwinkle digestive tract

Odintsov

Karpenko

Карпенко

2022

Environ Sci Pollut Res

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Micro-nano-sized polytetrafluoroethylene (teflon) particles as a model of plastic pollution detection in living organisms

Cited by 9 publications

References 36 publications

Contact-Electro-Catalysis Through Electret Behavior to Facilitate Electron Transfer

Contact-Electro-Catalysis Through Electret Behavior to Facilitate Electron Transfer

Targeted Therapy of Tuberculous Meningitis in Rats with Methylprednisolone Composite Nanoparticles

Degradation of micro-nano-sized polytetrafluoroethylene and acrylic fluorinated copolymer particles in the periwinkle digestive tract

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