1T'-transition metal dichalcogenide monolayers stabilized on 4H-Au nanowires for ultrasensitive SERS detection
- City Univ. of Hong Kong (Hong Kong)
- Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics
- Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Institute of Microsystem and Information Technology
- Hong Kong Polytechnic University, Hong Kong (China)
- Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Institute of Applied Physics and Shanghai Advanced Research Institute
- Nanyang Technological Univ. (Singapore)
- The Chinese University of Hong Kong, Hong Kong (China)
- Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
- Tsinghua Univ., Beijing (China)
- Xiamen University (China)
- Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Institute of Microsystem and Information Technology; Chinese Academy of Sciences (CAS), Shenzhen (China). Shenzhen Institute of Advanced Technology
Unconventional 1T'-phase transition metal dichalcogenides (TMDs) have aroused tremendous research interest due to their unique phase-dependent physicochemical properties and applications. However, due to the metastable nature of 1T'-TMDs, the controlled synthesis of 1T'-TMD monolayers (MLs) with high phase purity and stability still remains a challenge. Here we report that 4H-Au nanowires (NWs), when used as templates, can induce the quasi-epitaxial growth of high-phase-purity and stable 1T'-TMD MLs, including WS2, WSe2, MoS2 and MoSe2, via a facile and rapid wet-chemical method. The as-synthesized 4H-Au@1T'-TMD core–shell NWs can be used for ultrasensitive surface-enhanced Raman scattering (SERS) detection. For instance, the 4H-Au@1T'-WS2 NWs have achieved attomole-level SERS detections of Rhodamine 6G and a variety of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike proteins. Finally, this work provides insights into the preparation of high-phase-purity and stable 1T'-TMD MLs on metal substrates or templates, showing great potential in various promising applications.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 2432564
- Report Number(s):
- BNL--225942-2024-JAAM
- Journal Information:
- Nature Materials, Journal Name: Nature Materials Journal Issue: 10 Vol. 23; ISSN 1476-1122
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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