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Hexagonal Boron Nit...
Hexagonal Boron Nitride : The Thinnest Insulating Barrier to Microbial Corrosion
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Chilkoor, Govinda (author)
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Karanam, Sushma Priyanka (author)
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Star, Shane (author)
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Shrestha, Namita (author)
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Sani, Rajesh K. (author)
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- Upadhyayula, Venkata K. K. (author)
- Umeå universitet,Kemiska institutionen
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Ghoshal, Debjit (author)
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Koratkar, Nikhil A. (author)
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Meyyappan, M. (author)
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Gadhamshetty, Venkataramana (author)
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(creator_code:org_t)
- 2018-02-12
- 2018
- English.
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In: ACS Nano. - : American Chemical Society (ACS). - 1936-0851 .- 1936-086X. ; 12:3, s. 2242-2252
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- We report the use of a single layer of two-dimensional hexagonal boron nitride (SL-hBN) as the thinnest insulating barrier to microbial corrosion induced by the sulfate-reducing bacteria Desulfovibrio alaskensis G20. We used electrochemical methods to assess the corrosion resistance of SL-hBN on copper against the effects of both the planktonic and sessile forms of the sulfate-reducing bacteria. Cyclic voltammetry results show that SL-hBN-Cu is effective in suppressing corrosion effects of the planktonic cells at potentials as high as 0.2 V (vs Ag/AgCl). The peak anodic current for the SL-hBN coatings is ∼36 times lower than that of bare Cu. Linear polarization resistance tests confirm that the SL-hBN coatings serve as a barrier against corrosive effects of the G20 biofilm when compared to bare Cu. The SL-hBN serves as an impermeable barrier to aggressive metabolites and offers ∼91% corrosion inhibition efficiency, which is comparable to much thicker commercial coatings such as polyaniline. In addition to impermeability, the insulating nature of SL-hBN suppresses galvanic effects and improves its ability to combat microbial corrosion.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- 2D coatings
- hexagonal boron nitride
- microbial corrosion
- sulfate-reducing bacteria
Publication and Content Type
- ref (subject category)
- art (subject category)
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ACS Nano
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- By the author/editor
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Chilkoor, Govind ...
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Karanam, Sushma ...
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Star, Shane
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Shrestha, Namita
-
Sani, Rajesh K.
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Upadhyayula, Ven ...
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show more...
-
Ghoshal, Debjit
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Koratkar, Nikhil ...
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Meyyappan, M.
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Gadhamshetty, Ve ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
- Articles in the publication
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ACS Nano
- By the university
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Umeå University