Facile synthesis of large-scale TiO2 nanorod arrays decorated with Ag nanoparticles as sensitive 3D SERS substrates

Polyacrylonitrile as a versatile matrix for gold nanoparticle-based SERS substrates

“…7,8 SERS uses the electromagnetic and chemical phenomena that occur when analyte molecules are near nanostructures to amplify Raman signals. 9–16…”

“…7,8 SERS uses the electromagnetic and chemical phenomena that occur when analyte molecules are near nanostructures to amplify Raman signals. [9][10][11][12][13][14][15][16] Gold nanoparticles (AuNPs) have been widely employed in SERS substrates because of their exceptional plasmonic properties, high chemical stability, and ease of functionalization. [17][18][19][20][21][22][23] LSPR is one of their unique optical properties that can considerably amplify the Raman signals of surrounding analyte molecules.…”

UV-Catalyzed TiO2–Based Optofluidic SERS Chip for Three Online Strategies: Fabrication, Detection, and Self-Cleaning

“…Due to its low cost, high stability, and environmental friendliness, TiO 2 is considered an excellent photocatalytic semiconductor . By introducing metallic materials into semiconductor materials, metal-composite semiconductor SERS structures can be prepared. − We placed carbon fiber cloth (CFC) coated with TiO 2 nanorods inside the optofluidic chip, creating a functionalized sensing region, and successfully formed AgNPs on it using UV light reduction of AgNO 3 solution, thereby achieving online fabrication of AgNPs@TiO 2 –CFC composite structures. By injecting target molecules into the optofluidic chip, we successfully achieved online molecular Raman detection.…”