Effects of proton irradiation on structures and photo-catalytic property of nano-TiO2/CNTs films

Chen, Ying; Zhao, Huiyang; Wu, Yiyong; Huang, Xizhi; Wang, Li; Guo, Bin

doi:10.1016/j.radphyschem.2018.08.039

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…Titanium dioxide (TiO 2 ) has been widely investigated over the past decade because of its antimicrobial property caused by photocatalysis under light that generates enough energy for the production of reactive oxygen species (ROS) such as •OH, H 2 O 2 , and O 2 −•, which have the great potential in damaging microbial cells [4]. Moreover, under the ultraviolet irradiation, the food-borne microbes and allergens could be protected well [5].…”

Section: Introductionmentioning

confidence: 99%

Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Zhang

Ahmed

et al. 2019

Coatings

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In this study, PLA/TiO2 composites materials were prepared via electrospinning and solution casting processes. By testing the mechanical properties, water contact angle, water vapor permeability, and solubility of the composite nanofibers and films, the comprehensive performances of the two types of nanocomposites were analyzed. The results show that maximum tensile strengths of 2.71 ± 0.11 MPa and 14.49 ± 0.13 MPa were achieved for the nanofibers and films at a TiO2 content of 0.75 wt.%. Moreover, the addition of TiO2 significantly cut down the water vapor transmittance rate of the nanofibers and films while significantly improving the water solubility. Further, the antibacterial activity increased under UV-A irradiation for a TiO2 nanoparticle content of 0.75 wt.%, and the nanofiber and films exhibited inhibition zones of 4.86 ± 0.50 and 3.69 ± 0.40 mm for E. coli, and 5.98 ± 0.77 and 4.63 ± 0.45 mm for S. aureus, respectively. Overall, the performance of the nanofiber was better than that of the film. Nevertheless, both the nanocomposite membranes satisfied the requirements of food packaging materials.

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Section: Introductionmentioning

confidence: 99%

Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Zhang

Ahmed

et al. 2019

Coatings

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“…For example, Ag nanoparticles have the ability to kill a great variety of Gram-positive and Gram-negative bacteria [ 9 ]; also, titanium dioxide (TiO 2 ) particles have been widely investigated due to their antimicrobial property caused by photocatalysis. When this latter occurred, under light, it generates enough energy for the production of reactive oxygen species (ROS), which possess great potential in damaging microbial cells [ 10 , 11 ]. Another inorganic filler used as an alternative antimicrobial agent is the barium titanate (BT).…”

Section: Introductionmentioning

confidence: 99%

Bacteriostatic Behavior of PLA-BaTiO3 Composite Fibers Synthesized by Centrifugal Spinning and Subjected to Aging Test

Boschetto

Doan

et al. 2021

Molecules

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The present work investigated the effect of Polylactic acid (PLA) fibers produced by centrifugal spinning with incorporated BaTiO3 particles to improve their bacteriostatic behavior. The PLA matrix and three composites, presenting three different amounts of fillers, were subjected to UV/O3 treatment monitoring the possible modifications that occurred over time. The morphological and physical properties of the surfaces were characterized by different microscopic techniques, contact angle, and surface potential measurements. Subsequently, the samples were tested in vitro with human dermal fibroblasts (HDF) to verify the cytotoxicity of the substrates. No significant differences between the PLA matrix and composites emerged; the high hydrophobicity of the fibers, derived by the polymer structure, represented an obstacle limiting the fibroblast attachment. Samples underwent bacterial exposure (Staphylococcus epidermidis) for 12 and 24 h. Increasing the concentration of BT, the number of living bacteria and their distribution decreased in comparison with the PLA matrix suggesting an effect of the inorganic filler, which generates a neutralization effect leading to reactive oxygen species (ROS) generation and subsequently to bacterial damages. These results suggest that the barium titanate (BT) fillers clearly improve the antibacterial properties of PLA fibers after aging tests made before bacterial exposure, representing a potential candidate in the creation of composites for medical applications.

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TiO2 strengthened PLA nanocomposites: A prospective material for packaging application

Nayak,

Behera,

Jali

2024

Journal of Molecular Structure

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Effects of proton irradiation on structures and photo-catalytic property of nano-TiO2/CNTs films

Cited by 5 publications

References 14 publications

Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Bacteriostatic Behavior of PLA-BaTiO3 Composite Fibers Synthesized by Centrifugal Spinning and Subjected to Aging Test

TiO2 strengthened PLA nanocomposites: A prospective material for packaging application

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