Electrochemical Detection of Isolated Nanoscale Defects in 2D Transition Metal Dichalcogenides
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F22%3A00559120" target="_blank" >RIV/61388955:_____/22:00559120 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0332544" target="_blank" >https://hdl.handle.net/11104/0332544</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.2c01656" target="_blank" >10.1021/acs.jpcc.2c01656</a>
Alternative languages
Result language
angličtina
Original language name
Electrochemical Detection of Isolated Nanoscale Defects in 2D Transition Metal Dichalcogenides
Original language description
We show that nanometer and sub-nanometer scale defects in two-dimensional transition metal dichalcogenides can be detected electrochemically using scanning electrochemical cell microscopy (SECCM). We detect isolated anomalous electrochemical responses for the hexaammineruthenium ([Ru(NH3)6]3+/2+) redox couple on mono-, bi-, and trilayer regions of mechanically exfoliated MoS2. These anomalous sample points display faster electrochemical kinetics, with a diffusion-limited current plateau, compared to the surrounding sample points. The analysis of the electrochemical current suggests that the defects are equivalent to disk-shaped defects with radii of tens of nanometers, or to one-dimensional defects with nanometer to sub-nanometer widths. These results demonstrate that we can effectively isolate and electrochemically amplify the response from individual defects on a sample surface using SECCM, revealing features below the optical diffraction limit that would normally require high-resolution electron microscopy or scanning tunneling microscopy to detect.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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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
Journal of Physical Chemistry C
ISSN
1932-7447
e-ISSN
1932-7455
Volume of the periodical
126
Issue of the periodical within the volume
28
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
11636-11641
UT code for WoS article
000830924800001
EID of the result in the Scopus database
2-s2.0-85135888077