Opposite effects of gold and silver nanoparticle decoration of graphenic surfaces on bacterial attachment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F22%3A00558697" target="_blank" >RIV/61388955:_____/22:00558697 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0332261" target="_blank" >http://hdl.handle.net/11104/0332261</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/D2NJ00648K" target="_blank" >10.1039/D2NJ00648K</a>
Alternative languages
Result language
angličtina
Original language name
Opposite effects of gold and silver nanoparticle decoration of graphenic surfaces on bacterial attachment
Original language description
The interaction between bacteria and nanoparticles is currently a central topic in bionanotechnology. In this work, we investigated how the deposition of two kinds of metallic (Au and Ag) nanoparticles (AuNPs and AgNPs, respectively, ∼25 nm) on model graphenic surfaces affects bacterial attachment and survival. The nanoscale functionalization of the graphenic surface resulted in bacterial attachment (AuNPs) and bactericidal effects (AgNPs). The observed tendencies provide general insight into bacteria/nanoparticle/surface interactions, because they were observed for both Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus and Staphylococcus epidermidis) bacterial strains. Interestingly, the simultaneous deposition of AuNPs and AgNPs served two functions at the same time, enhancing both bacterial attachment and antibacterial potential. The antibacterial properties of the AgNPs were explained in terms of electronic effects. Their deposition on graphene led to a decrease in the work function, promoting electron transfer to dioxygen molecules, and formation of reactive oxygen species (ROS) that react with the walls of bacterial cells and effectively destroy them. This work provides useful insight for the design and development of graphenic surfaces, for which tuning the interactions (attraction/repulsion and bacteriostatic/bactericidal effects) at the carbon material–microorganism interface represents an essential task.n
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
New Journal of Chemistry
ISSN
1144-0546
e-ISSN
1369-9261
Volume of the periodical
46
Issue of the periodical within the volume
27
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
13286-13295
UT code for WoS article
000814785100001
EID of the result in the Scopus database
2-s2.0-85132824067