Počet záznamů: 1
Electrochemical Detection of Isolated Nanoscale Defects in 2D Transition Metal Dichalcogenides
- 1.
SYSNO ASEP 0559120 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Electrochemical Detection of Isolated Nanoscale Defects in 2D Transition Metal Dichalcogenides Tvůrce(i) Cabré, M. B. (IE)
Paiva, A. E. (IE)
Velický, Matěj (UFCH-W) ORCID, RID, SAI
Colavita, P.E. (IE)
McKelvey, K. (IE)Zdroj.dok. Journal of Physical Chemistry C. - : American Chemical Society - ISSN 1932-7447
Roč. 126, č. 28 (2022), s. 11636-11641Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova electrochemistry ; redox reactions ; electrodes Vědní obor RIV CG - Elektrochemie Obor OECD Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) Způsob publikování Omezený přístup Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000830924800001 EID SCOPUS 85135888077 DOI 10.1021/acs.jpcc.2c01656 Anotace 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. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2023 Elektronická adresa https://hdl.handle.net/11104/0332544
Počet záznamů: 1