Fullerene nanosheets for surface-enhanced Raman spectroscopy

Abstract

Most surface-enhanced Raman scattering (SERS) substrates are based on noble metals or transition metal semiconductors. Developing nonmetallic SERS substrates is of great significance for expanding the application scope of SERS substrate materials. In this study, ultrathin C₆₀ nanosheets with two-dimensional structures were synthesized using CVD and used as SERS substrates. Owing to the combined effects of favorable factors such as the expanded specific surface area and matched interfacial charge transport paths, the substrate has a minimum detection limit of 10⁻¹¹ for rhodamine 6G and a Raman enhancement factor of 10⁷. In addition, the C₆₀ nanosheets exhibited good stability and uniformity as SERS substrates.

Keywords

Fullerenes / Nanosheets / Raman sensing / Interfacial charge transfer / Pollutant detection

Declaration of Competing Interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

CRediT authorship contribution statement

Linchangqing Yang: Writing - review & editing, Writing - original draft, Methodology, Investigation. Yahui Li: Investigation. Wei Liu: Investigation. Junhao Zhang: Methodology. Qinghong Kong: Writing - original draft, Methodology, Investigation. Guangcheng Xi: Conceptualization, Formal analysis.

Acknowledgements

This study was financially supported by the Science Foundation of the Chinese Academy of Inspection and Quarantine (2022JK14) and the National Natural Science Foundation of China (22374139).

Supplementary materials

Supplementary material associated with this article can be found, in the online version, at doi: 10.1016/j.chphma.2024.04.001.

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