2019
DOI: 10.1002/jrs.5663
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Porous alumina aerogel with tunable pore structure for facile, ultrasensitive, and reproducible SERS platform

Abstract: Porous alumina aerogel synthesized by sol–gel method was used as facile and sensitive surface‐enhanced Raman scattering (SERS) platform. In a simple “drop‐test” SERS detection, low concentration dye solution mixed with silver nanoparticles was directly dropped on the surface of aerogel platform for SERS detection immediately. The pore structure of alumina aerogel was tuned by adding PEG‐400 and varying the gelation temperature. The effects of surface morphology and pore size of alumina aerogel platform on SERS… Show more

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Cited by 15 publications
(6 citation statements)
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“…However, the electron beam evaporation also involves high costs. Zou et al mixed a silver sol with detection solution and directly dropped it on the surface of an Al 2 O 3 aerogel, achieving an EF of 3.4 × 10 7 . The “drop test” detection method is very simple, but it cannot guarantee the uniformity of Ag NP dispersion.…”
Section: Introductionmentioning
confidence: 99%
“…However, the electron beam evaporation also involves high costs. Zou et al mixed a silver sol with detection solution and directly dropped it on the surface of an Al 2 O 3 aerogel, achieving an EF of 3.4 × 10 7 . The “drop test” detection method is very simple, but it cannot guarantee the uniformity of Ag NP dispersion.…”
Section: Introductionmentioning
confidence: 99%
“…The highest enhancement factor in SERS was obtained for the Ag–TiO 2 hybrids with a diameter and surface coverage of AgNSs less than 30 nm and larger than 50%, respectively. Zou et al [ 26 ] used porous alumina aerogel synthesized by sol–gel method as a facile and sensitive SERS platform. In a simple “drop‐test” of SERS detection, a low concentration dye solution was mixed with silver nanoparticles that was directly dropped on the surface of aerogel platform for immediate SERS detection.…”
Section: Surface‐enhanced Raman Spectroscopymentioning
confidence: 99%
“…Due to their many strengths, they are widely used in sensing, immunoassays, stem cell growth, and contaminant removal . As a trace detection technology of molecular fingerprints, SERS has become a hot spot to explore the mechanism of catalytic reactions in recent years. , The morphology, specific surface area, and localized surface plasmon resonance (LSPR) can greatly affect the SERS sensitivity of the material. Therefore, the construction of efficient bifunctional materials as both SERS substrates and nanozymes to in situ monitor the catalytic process for enzyme-mimicking has captured great attention.…”
Section: Introductionmentioning
confidence: 99%