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Recent Advances in 2D Inorganic Nanomaterials for SERS Sensing
Padmanathan Karthick Kannan1, Prabakaran Shankar2,3, Chris Blackman4
1School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
Advanced Materials (Deerfield Beach, Fla.)
|February 19, 2019
Summary
Two-dimensional inorganic nanomaterials significantly enhance surface-enhanced Raman spectroscopy (SERS) for sensitive chemical detection. This review details their application in SERS-based chemical sensors, highlighting advancements and future directions.
Area of Science:
- Analytical Chemistry
- Materials Science
- Nanotechnology
Background:
- Surface-enhanced Raman spectroscopy (SERS) is a sensitive analytical technique used for chemical and biomolecule analysis and environmental monitoring.
- Various materials, including noble metals and nanostructured materials, have been utilized as SERS substrates since the 1970s.
- Two-dimensional (2D) inorganic nanomaterials offer unique thickness-dependent properties ideal for SERS-based chemical sensors.
Purpose of the Study:
- To present recent advances in using 2D inorganic nanomaterials for chemical detection via SERS.
- To comprehensively discuss the theory, sensing mechanisms, and substrate materials for SERS.
- To explain the role of 2D nanomaterials in SERS enhancement for chemical detection.
Main Methods:
- Review of recent literature on 2D inorganic nanomaterials in SERS.
- Discussion of SERS basic theory and sensing mechanisms.
- Analysis of various nanomaterials (graphene, boron nitride, metal oxides, transition metal chalcogenides) as SERS substrates.
Main Results:
- 2D inorganic nanomaterials exhibit enhanced charge-transfer processes beneficial for SERS.
- Graphene, boron nitride, semiconducting metal oxides, and transition metal chalcogenides are effective 2D nanomaterials for SERS.
- These materials show significant potential for sensitive chemical detection applications.
Conclusions:
- 2D inorganic nanomaterials are crucial for advancing SERS technology.
- Further development guidelines are provided for the future of 2D nanomaterial-based SERS.
- This field holds promise for highly sensitive and selective chemical sensing.
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