Covalent bonding of AgNPs to 304 stainless steel by reduction in situ for antifouling applications

Cao, Ping; He, Xiaoyan; Xiao, Jinfei; Yuan, Chengqing; Bai, Xiuqin

doi:10.1016/j.apsusc.2018.04.227

“…The central binding energies of O 1s, Sn 3d 5/2 , and Sn 3d 3/2 peaked at 530.6 eV, 486.5 eV, and 495.0eV, respectively, which was very close to the value reported in the standard spectrum of the lattice of oxygen and tin in SnO 2 [32]. Moreover, the spin-orbital coupling energy gap between the Sn 3d was reduced to Ag 0 during nanofiber preparation [34].…”

Section: Resultssupporting

confidence: 78%

Electrospun Ag-doped SnO₂ hollow nanofibers with high antibacterial activity

Yang

¹

,

Tang

²

,

Zhang

³

et al. 2019

Preprint

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With the continuous improvement in medical science in modern times, the spread of bacterial infection has become a matter of global concern. Therefore, the search for biological medical materials with antibacterial function has become a focus of intense research. In this work, pure SnO 2 and Ag-doped SnO 2 hollow nanofibers were fabricated by a combination of an electrospinning method and a calcination procedure, and the effects of the doped Ag on antibacterial activity were subsequently investigated. Through the process of high-temperature calcination, a high heating rate would lead to the formation of a hollow tubular structure in SnO 2 fibers, and Ag 2 O would be reduced to Ag0 by a facile process with appropriate thermal treatment.Additionally, the existence of SnO 2 as a tetragonal rutile structure was confirmed. On the basis of pure SnO 2 , doping with silver greatly improved the antibacterial activity of hollow nanofibers. The formation mechanism and the antibacterial mechanism of pure SnO 2 and Ag-doped hollow nanofibers are also discussed. This study has broad application prospects for biological medicine.

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“…The procedure of antibacterial assays followed our previously published protocol (plate counting) . Briefly, E .…”

Section: Methodsmentioning

confidence: 99%

“…The procedure of antibacterial assays followed our previously published protocol (plate counting). 4,30 Briefly, E. coli and S. aureus suspensions with a concentration of 10 7 CFU/mL were centrifuged at 5000 rpm for 20 minutes, and the centrifugal products were resuspended in PBS solution (pH 7.4) separately. Sample surfaces were then treated with 100 μL of bacterial solutions, covered by a plastic wrap, and incubated at 37°C for 3 hours.…”

mentioning

confidence: 99%

Stainless steel coated by Cu NPs via dopamine coupling for antifouling application

Cao

¹

,

Cao

²

,

Yuan

³

2019

Surface & Interface Analysis

Self Cite

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Biofouling is very harmful in diverse industries. Copper nanoparticles (Cu NPs) possess excellent antifouling performances. In this study, in situ generation of Cu NPs on dopamine modified 304 stainless steel (SS) surface layer‐by‐layer in weak alkaline solution was reported. Field emission scanning electron microscope equipped with energy dispersive spectrometer, atomic force microscope, and X‐ray photoelectron spectroscopy were utilized to analyze the surface morphology and chemical composition of the modified SS. The results demonstrated that the surface of SS was coated with polydopamine (PDA) and Cu NPs successfully. The robustness assay of the Cu NPs surface demonstrated that most Cu NPs had bound on the surface of the stainless steel firmly. Antimicrobial assays showed that modified surface possessed the ability of resistance of Escherichia coli and Staphylococcus aureus to an effectiveness of 92.1% and 80.4%, respectively. The presence of copper offers the coatings' excellent capability to inhibit effectively the adhesion of marine diatom Phaeodactylum tricornutum to an effectiveness of 98.15%. This strategy exhibited a realistic paradigm for further improving the antifouling performances of hull surfaces.

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“…, it can be seen that a small amount of AgO and Ag 2 O existed, which meant that not all Ag 2 O was reduced to Ag 0 during nanofiber preparation [34].…”

Section: (D)]mentioning

confidence: 99%

Electrospun Ag-Doped SnO2 Hollow Nanofibers with High Antibacterial Activity

Yang

¹

,

Gao

²

,

Zhang

³

et al. 2020

Electron. Mater. Lett.

View full text Add to dashboard Cite

With the continuous improvement in medical science in modern times, the spread of bacterial infection has become a matter of global concern. Therefore, the search for biological medical materials with antibacterial function has become a focus of intense research. In this work, pure SnO 2 and Ag-doped SnO 2 hollow nanofibers were fabricated by a combination of an electrospinning method and a calcination procedure, and the effects of the doped Ag on antibacterial activity were subsequently investigated. Through the process of high-temperature calcination, a high heating rate would lead to the formation of a hollow tubular structure in SnO 2 fibers, and Ag 2 O would be reduced to Ag0 by a facile process with appropriate thermal treatment.Additionally, the existence of SnO 2 as a tetragonal rutile structure was confirmed. On the basis of pure SnO 2 , doping with silver greatly improved the antibacterial activity of hollow nanofibers. The formation mechanism and the antibacterial mechanism of pure SnO 2 and Ag-doped hollow nanofibers are also discussed. This study has broad application prospects for biological medicine.

show abstract

Covalent bonding of AgNPs to 304 stainless steel by reduction in situ for antifouling applications

Cited by 27 publications

References 48 publications

Electrospun Ag-doped SnO₂ hollow nanofibers with high antibacterial activity

Electrospun Ag-doped SnO₂ hollow nanofibers with high antibacterial activity

Stainless steel coated by Cu NPs via dopamine coupling for antifouling application

Electrospun Ag-Doped SnO2 Hollow Nanofibers with High Antibacterial Activity

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Covalent bonding of AgNPs to 304 stainless steel by reduction in situ for antifouling applications

Cited by 27 publications

References 48 publications

Electrospun Ag-doped SnO2 hollow nanofibers with high antibacterial activity

Electrospun Ag-doped SnO2 hollow nanofibers with high antibacterial activity

Stainless steel coated by Cu NPs via dopamine coupling for antifouling application

Electrospun Ag-Doped SnO2 Hollow Nanofibers with High Antibacterial Activity

Contact Info

Product

Resources

About

Electrospun Ag-doped SnO₂ hollow nanofibers with high antibacterial activity

Electrospun Ag-doped SnO₂ hollow nanofibers with high antibacterial activity