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Porous silicon decorated with Au/TiO(2) nanocomposites for efficient photoinduced enhanced Raman spectroscopy

In this study, we investigated the potential of porous silicon (PSi) modified with Au/TiO(2) nanocomposites (NCPs) as a substrate for photoinduced enhanced Raman spectroscopy (PIERS). One-step pulsed laser-induced photolysis (PLIP) was used to embed Au/TiO(2) NCPs in the surface of PSi. Scanning ele...

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Autores principales: Huang, Sheng-Yang, Gao, Wei-Ning, Chou, Chia-Man, Hsiao, Vincent K. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10204733/
https://www.ncbi.nlm.nih.gov/pubmed/37228681
http://dx.doi.org/10.1039/d3ra02598e
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author Huang, Sheng-Yang
Gao, Wei-Ning
Chou, Chia-Man
Hsiao, Vincent K. S.
author_facet Huang, Sheng-Yang
Gao, Wei-Ning
Chou, Chia-Man
Hsiao, Vincent K. S.
author_sort Huang, Sheng-Yang
collection PubMed
description In this study, we investigated the potential of porous silicon (PSi) modified with Au/TiO(2) nanocomposites (NCPs) as a substrate for photoinduced enhanced Raman spectroscopy (PIERS). One-step pulsed laser-induced photolysis (PLIP) was used to embed Au/TiO(2) NCPs in the surface of PSi. Scanning electron microscopy revealed that adding TiO(2) nanoparticles (NPs) during PLIP led to the formation of predominantly spherical Au NPs with a diameter of approximately 20 nm. Furthermore, modifying the PSi substrate with Au/TiO(2) NCPs considerably enhanced the Raman signal of rhodamine 6G (R6G) after 4 h of ultraviolet (UV) irradiation. Real-time monitoring of the Raman signals of R6G at different concentrations under UV irradiation revealed that the amplitude of the signals increased with the irradiation time for R6G concentrations ranging from 10(−3) M to 10(−5) M. PSi substrates decorated with Au/TiO(2) NCPs may be used to develop materials for PIERS applications.
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spelling pubmed-102047332023-05-24 Porous silicon decorated with Au/TiO(2) nanocomposites for efficient photoinduced enhanced Raman spectroscopy Huang, Sheng-Yang Gao, Wei-Ning Chou, Chia-Man Hsiao, Vincent K. S. RSC Adv Chemistry In this study, we investigated the potential of porous silicon (PSi) modified with Au/TiO(2) nanocomposites (NCPs) as a substrate for photoinduced enhanced Raman spectroscopy (PIERS). One-step pulsed laser-induced photolysis (PLIP) was used to embed Au/TiO(2) NCPs in the surface of PSi. Scanning electron microscopy revealed that adding TiO(2) nanoparticles (NPs) during PLIP led to the formation of predominantly spherical Au NPs with a diameter of approximately 20 nm. Furthermore, modifying the PSi substrate with Au/TiO(2) NCPs considerably enhanced the Raman signal of rhodamine 6G (R6G) after 4 h of ultraviolet (UV) irradiation. Real-time monitoring of the Raman signals of R6G at different concentrations under UV irradiation revealed that the amplitude of the signals increased with the irradiation time for R6G concentrations ranging from 10(−3) M to 10(−5) M. PSi substrates decorated with Au/TiO(2) NCPs may be used to develop materials for PIERS applications. The Royal Society of Chemistry 2023-05-23 /pmc/articles/PMC10204733/ /pubmed/37228681 http://dx.doi.org/10.1039/d3ra02598e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Huang, Sheng-Yang
Gao, Wei-Ning
Chou, Chia-Man
Hsiao, Vincent K. S.
Porous silicon decorated with Au/TiO(2) nanocomposites for efficient photoinduced enhanced Raman spectroscopy
title Porous silicon decorated with Au/TiO(2) nanocomposites for efficient photoinduced enhanced Raman spectroscopy
title_full Porous silicon decorated with Au/TiO(2) nanocomposites for efficient photoinduced enhanced Raman spectroscopy
title_fullStr Porous silicon decorated with Au/TiO(2) nanocomposites for efficient photoinduced enhanced Raman spectroscopy
title_full_unstemmed Porous silicon decorated with Au/TiO(2) nanocomposites for efficient photoinduced enhanced Raman spectroscopy
title_short Porous silicon decorated with Au/TiO(2) nanocomposites for efficient photoinduced enhanced Raman spectroscopy
title_sort porous silicon decorated with au/tio(2) nanocomposites for efficient photoinduced enhanced raman spectroscopy
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10204733/
https://www.ncbi.nlm.nih.gov/pubmed/37228681
http://dx.doi.org/10.1039/d3ra02598e
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