Method of sacrificial anode transistor-driving in cathodic protection system

Narozny, M.; Żakowski, Krzysztof; Darowicki, Kazimierz

doi:10.1016/j.corsci.2014.07.041

Cited by 18 publications

(9 citation statements)

References 14 publications

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“…The driving force for this reaction is likely derived from the difference in electrochemical potential between silver (0.7996 V) and platinum (1.18 V) (Bard, Parsons, & Jordan, 1985). In this metallic couple, silver may act as the sacrificial anode that preferentially dissolves, promoting the release of silver ions (Narozny et al, 2014). Both the amount of platinum and the chemical homogeneity of Pt on the surface of AgNPs might also play a critical role in the enhanced release of Ag + .…”

Section: Discussionmentioning

confidence: 99%

“…One approach to enhancing the antimicrobial activity of AgNPs while maintaining biocompatible levels is to dope silver nanoparticles with small amounts of a second metal, electrochemically less active than silver, creating a bimetallic nanoparticle (Gu, Zhang, & Tao, 2012). When placed in an electrolytic environment, the silver component of the bimetallic nanoparticle may act as a sacrificial anode and preferentially dissolve, promoting the release of ionic silver (Breisch et al, 2019; Narozny, Zakowski, & Darowicki, 2014). The electrocatalytic reaction occurs more readily when both metals are present at the surface of the particles (Li & Yamauchi, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Antimicrobial efficacy of platinum‐doped silver nanoparticles

et al. 2020

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Silver nanoparticles (AgNPs) have been proposed to combat oral infection due to their efficient ionic silver (Ag +) release. However, concentrations required for antimicrobial efficacy may not be therapeutically viable. In this work, platinum-doped silver nanoparticles (Pt-AgNPs) were explored to evaluate their potential for enhanced Ag + release, which could lead to enhanced antimicrobial efficacy against S. aureus, P. aeruginosa, and E. coli. AgNPs doped with 0.5, 1, and 2 mol% platinum (Pt 0.5-AgNPs, Pt 1-AgNPs, and Pt 2-AgNPs) were synthesized by a chemical reduction method. Transmission electron microscopy revealed mixed morphologies of spherical, oval, and ribbon-like nanostructures. Surface-enhanced Raman scattering revealed that the surface of Pt-AgNPs was covered with up to 93% Pt. The amount of Ag + released increased 16.3-fold for Pt 2-AgNPs, compared to AgNPs. The initial lag phase in bacterial growth curve was prolonged for Pt-AgNPs. This is consistent with a Ag + release profile that exhibited an initial burst followed by sustained release. Doping AgNPs with platinum significantly increased the antimicrobial efficacy against all species. Pt 2-AgNPs exhibited the lowest minimum inhibitory concentrations, followed by Pt 1-AgNPs, Pt 0.5-AgNPs, and AgNPs, respectively. Doping AgNPs with a small amount of platinum promoted the release of Ag + , based on the sacrificial anodic effect, and subsequently enhanced their antimicrobial efficacy.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Antimicrobial efficacy of platinum‐doped silver nanoparticles

et al. 2020

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“…The proposed driving system is usable both in earth and seawater. This work is a continuation of previous research involving single transistor driving system for magnesium anodes [22].…”

Section: Introductionmentioning

confidence: 95%

Method of sacrificial anode dual transistor-driving in stray current field

2015

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“…Technically, magnesium would be the best material as SA due to its higher potential. However, this higher potential causes overprotection and generates the development of hydrogen gas, which may cause coating defect and coating disbondment from the tank [11]. In addition, due to the high current flow, the anodes will be exhausted in a short time.…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of sacrificial anode cathodic protection system for above ground storage tank

2020

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This study presents a controlled sacrificial anode (magnesium anodes) cathodic protection system for aboveground storage tanks. The proposed method is able to control the anode’s current, which leads to enhance the performance of anodes, therefore, increase the anode’s lifetime. The proposed system has been implemented in a laboratory-based tank contains saline water (5661 ppm). In this experiment, the overprotection and anode energy loss were eliminated, and the anodes lifetime has been extended 35.55 times higher compared to the conventional system. The proposed method reduced the protection current and stabilized the system overall.

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Method of sacrificial anode transistor-driving in cathodic protection system

Cited by 18 publications

References 14 publications

Antimicrobial efficacy of platinum‐doped silver nanoparticles

Antimicrobial efficacy of platinum‐doped silver nanoparticles

Method of sacrificial anode dual transistor-driving in stray current field

Performance improvement of sacrificial anode cathodic protection system for above ground storage tank

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