Layer-dependent stability of 2D mica nanosheetsopen access
- Authors
- Kim, Jae-Hun; Kulish, Vadym V.; Wu, Shunnian; Wu, Ping; Shi, Yue; Osada, Minoru; Kim, Hyoun Woo; Kim, Sang Sub
- Issue Date
- May-2023
- Publisher
- NATURE PORTFOLIO
- Citation
- SCIENTIFIC REPORTS, v.13, no.1, pp.1 - 7
- Indexed
- SCIE
SCOPUS
- Journal Title
- SCIENTIFIC REPORTS
- Volume
- 13
- Number
- 1
- Start Page
- 1
- End Page
- 7
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/186353
- DOI
- 10.1038/s41598-023-34465-5
- ISSN
- 2045-2322
- Abstract
- We report on the layer-dependent stability of muscovite-type two-dimensional (2D) mica nanosheets (KAl3Si3O10(OH)2). First-principles calculations on mica nanosheets with different layer thicknesses (n = 1, 2, and 3) reveal their layer-dependent stability; odd-numbered 2D mica nanosheets are more stable than even-numbered ones, and the preferable stability of odd-numbered layers originates from electronic effects. A core-shielding model is proposed with a reasonable assumption, successfully proving the instability of the even-numbered mica nanosheets. Raman imaging supports that the population of odd-numbered mica nanosheets is predominant in exfoliated mica products. The alternating charge states with odd/even layers were evidenced by Kelvin probe force microscopy. We also demonstrate a unique photocatalytic degradation, opening new doors for environmental applications of mica nanosheets.
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