Journal
CHEMICAL COMMUNICATIONS
Volume 55, Issue 55, Pages 7982-7985Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc03337h
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Funding
- National Natural Science Foundation of China (NSFC) [51772142]
- Shenzhen Science and Technology Innovation Committee [JCYJ20170412152528921, KQTD2016053019134356]
- Development and Reform Commission of Shenzhen Municipality (Novel Nanomaterial Discipline Construction Plan)
- SUSTech
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We have developed a method to fabricate freestanding highly ordered porous silver (Ag) superstructures by an assembly-based nanoparticle (NP) coalescence method. The synthesized superstructures have high-density mesopores periodically distributed over the entire structure, on which a highly enhanced electromagnetic field was observed by electron energy loss spectroscopy. Thus, the surface enhanced Raman scattering (SERS) signal of Rhodamine 6G in the ordered mesopores is 8.2 times higher compared to that in disordered porous superstructures. The results demonstrate that these freestanding mesoporous Ag superstructures are potentially good SERS substrates.
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