nn-2020-036259.R1_.pdf (1.07 MB)
Hexagonal boron nitride for sulfur corrosion inhibition
journal contribution
posted on 2023-06-09, 22:05 authored by Govind Chilkoor, Kalimuthu Jawaharraj, Bhuvan Vemuri, Alex Kutana, Manoj TripathiManoj Tripathi, Divya Kota, Taib Arif, Tobin Filleter, Alan DaltonAlan Dalton, Boris I Yakob, M Meyyappan, Muhammad M Rahman, Pulickel M Ajayan, Venkataramana GadhamshettyCorrosion by sulfur compounds is a long-standing challenge in many engineering applications. Specifically, designing a coating that protects metals from both abiotic and biotic forms of sulfur corrosion remains an elusive goal. Here we report that atomically thin layers (~4) of hexagonal boron nitride (hBN) act as a protective coating to inhibit corrosion of the underlying copper (Cu) surfaces (~6–7-fold lower corrosion than bare Cu) in abiotic (sulfuric acid and sodium sulfide) and biotic (sulfate-reducing bacteria medium) environments. The corrosion resistance of hBN is attributed to its outstanding barrier properties to the corrosive species in diverse environments of sulfur compounds. Increasing the number of atomic layers did not necessarily improve the corrosion protection mechanisms. Instead, multilayers of hBN were found to upregulate the adhesion genes in Desulfovibrio alaskensis G20 cells, promote cell adhesion and biofilm growth, and lower the protection against biogenic sulfide attack when compared to the few layers of hBN. Our findings confirm hBN as the thinnest coating to resist diverse forms of sulfur corrosion.
History
Publication status
- Published
File Version
- Accepted version
Journal
ACS NanoISSN
1936-0851Publisher
American Chemical SocietyExternal DOI
Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2020-11-09First Open Access (FOA) Date
2021-10-27First Compliant Deposit (FCD) Date
2020-11-08Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC