SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Ag Composite and Its Signal Enhancement Capacity on Raman Spectroscopy
A ceramic–metal composite was synthesized using sol–gel and electrospinning methods to serve as a SERS substrate. The precursors used were tetraethyl orthosilicate, aluminum nitrate, and zirconium, and polyvinylpyrrolidone was added to electrospun nonwoven fibrous membranes. The membranes were sinte...
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2025-07-01
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| author | Jesús Alberto Garibay-Alvarado Pedro Pizá-Ruiz Armando Erasto Zaragoza-Contreras Francisco Espinosa-Magaña Simón Yobanny Reyes-López |
| author_facet | Jesús Alberto Garibay-Alvarado Pedro Pizá-Ruiz Armando Erasto Zaragoza-Contreras Francisco Espinosa-Magaña Simón Yobanny Reyes-López |
| author_sort | Jesús Alberto Garibay-Alvarado |
| collection | DOAJ |
| description | A ceramic–metal composite was synthesized using sol–gel and electrospinning methods to serve as a SERS substrate. The precursors used were tetraethyl orthosilicate, aluminum nitrate, and zirconium, and polyvinylpyrrolidone was added to electrospun nonwoven fibrous membranes. The membranes were sintered, decorated with silver nanoparticles. The enhancement substrates were made of fibers of cylindric morphology with an average diameter of approximately 190 nm, a smooth surface, and 9 nm spherical particles decorating the surface of the fibers. The enhancement capacity of the substrates was tested using pyridine, methyl orange, methylene blue, crystal violet, and Eriochrome black T at different concentrations with Raman spectroscopy to determine whether the size and complexity of the analyte has an impact on the enhancement capacity. Enhancement factors of 2.53 × 10<sup>2</sup>, 3.06 × 10<sup>1</sup>, 2.97 × 10<sup>3</sup>, 4.66 × 10<sup>3</sup>, and 1.45 × 10<sup>3</sup> times were obtained for the signal of pyridine, methyl orange, methylene blue, crystal violet, and Eriochrome black T at concentrations of 1 nM. |
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| institution | Kabale University |
| issn | 2227-9040 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-cbb057a880124d04a3bb73e7c3aa98052025-08-20T03:58:25ZengMDPI AGChemosensors2227-90402025-07-0113726610.3390/chemosensors13070266SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Ag Composite and Its Signal Enhancement Capacity on Raman SpectroscopyJesús Alberto Garibay-Alvarado0Pedro Pizá-Ruiz1Armando Erasto Zaragoza-Contreras2Francisco Espinosa-Magaña3Simón Yobanny Reyes-López4Laboratorio de Materiales Híbridos Nanoestructurados, Departamento de Ciencias Químico Biológicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Av. Benjamin Franklin 4651, Juárez 32310, MexicoCentro de Investigación en Materiales Avanzados, SC. Av. Miguel de Cervantes 120 Complejo Industrial Chihuahua, Chihuahua 31136, MexicoCentro de Investigación en Materiales Avanzados, SC. Av. Miguel de Cervantes 120 Complejo Industrial Chihuahua, Chihuahua 31136, MexicoCentro de Investigación en Materiales Avanzados, SC. Av. Miguel de Cervantes 120 Complejo Industrial Chihuahua, Chihuahua 31136, MexicoLaboratorio de Materiales Híbridos Nanoestructurados, Departamento de Ciencias Químico Biológicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Av. Benjamin Franklin 4651, Juárez 32310, MexicoA ceramic–metal composite was synthesized using sol–gel and electrospinning methods to serve as a SERS substrate. The precursors used were tetraethyl orthosilicate, aluminum nitrate, and zirconium, and polyvinylpyrrolidone was added to electrospun nonwoven fibrous membranes. The membranes were sintered, decorated with silver nanoparticles. The enhancement substrates were made of fibers of cylindric morphology with an average diameter of approximately 190 nm, a smooth surface, and 9 nm spherical particles decorating the surface of the fibers. The enhancement capacity of the substrates was tested using pyridine, methyl orange, methylene blue, crystal violet, and Eriochrome black T at different concentrations with Raman spectroscopy to determine whether the size and complexity of the analyte has an impact on the enhancement capacity. Enhancement factors of 2.53 × 10<sup>2</sup>, 3.06 × 10<sup>1</sup>, 2.97 × 10<sup>3</sup>, 4.66 × 10<sup>3</sup>, and 1.45 × 10<sup>3</sup> times were obtained for the signal of pyridine, methyl orange, methylene blue, crystal violet, and Eriochrome black T at concentrations of 1 nM.https://www.mdpi.com/2227-9040/13/7/266ceramic nanofibersmullitesilver nanoparticlesSERSazo dyes |
| spellingShingle | Jesús Alberto Garibay-Alvarado Pedro Pizá-Ruiz Armando Erasto Zaragoza-Contreras Francisco Espinosa-Magaña Simón Yobanny Reyes-López SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Ag Composite and Its Signal Enhancement Capacity on Raman Spectroscopy Chemosensors ceramic nanofibers mullite silver nanoparticles SERS azo dyes |
| title | SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Ag Composite and Its Signal Enhancement Capacity on Raman Spectroscopy |
| title_full | SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Ag Composite and Its Signal Enhancement Capacity on Raman Spectroscopy |
| title_fullStr | SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Ag Composite and Its Signal Enhancement Capacity on Raman Spectroscopy |
| title_full_unstemmed | SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Ag Composite and Its Signal Enhancement Capacity on Raman Spectroscopy |
| title_short | SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub>-Ag Composite and Its Signal Enhancement Capacity on Raman Spectroscopy |
| title_sort | sio sub 2 sub al sub 2 sub o sub 3 sub zro sub 2 sub ag composite and its signal enhancement capacity on raman spectroscopy |
| topic | ceramic nanofibers mullite silver nanoparticles SERS azo dyes |
| url | https://www.mdpi.com/2227-9040/13/7/266 |
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