Fabrication and Application of SERS-Active Cellulose Fibers Regenerated from Waste Resource

Abstract

The flexible SERS substrate were prepared base on regenerated cellulose fibers, in which the Au nanoparticles were controllably assembled on fiber through electrostatic interaction. The cellulose fiber was regenerated from waste paper through the dry-jet wet spinning method, an eco-friendly and convenient approach by using ionic liquid. The Au NPs could be controllably distributed on the surface of fiber by adjusting the conditions during the process of assembling. Finite-difference time-domain theoretical simulations verified the intense local electromagnetic fields of plasmonic composites. The flexible SERS fibers show excellent SERS sensitivity and adsorption capability. A typical Raman probe molecule, 4-Mercaptobenzoicacid (4-MBA), was used to verify the SERS cellulose fibers, the sensitivity could achieve to 10−9 M. The flexible SERS fibers were successfully used for identifying dimetridazole (DMZ) from aqueous solution. Furthermore, the flexible SERS fibers were used for detecting DMZ from the surface of fish by simply swabbing process. It is clear that the fabricated plasmonic composite can be applied for the identifying toxins and chemicals.

Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants

“…There are two prominent Raman peaks observed at 1073 and 1583 cm −1 . The peak at 1073 cm −1 is due to the in-plane ring breathing vibration of the aromatic ring; the peak at 1583 cm −1 is assigned to the totally symmetric vibration of the C–C group of the ring [ 36 , 37 ]. The intensity of the SERS signal of MBA increased in going from four layers to 10 layers and reached a maximum at 10 layers.…”

Modified paper‐based substrates fabricated via electrostatic attraction of gold nanospheres for non‐destructive detection of pesticides based on surface‐enhanced Raman spectroscopy

“…The most important element for SERS technology is the substrate used to magnify the Raman signals of an analyte, which sets the technology apart from the conventional Raman technology. In recent years, various forms of cellulose (such as cotton swabs, non‐woven fabric, cellophane paper, regenerated cellulose fibers, and cellulose paper) have been used as solid platform for the metallic nanoparticles (NPs) with SERS effects to ‘catch’ the analyte molecules, mostly owing to their flexibility, relative uniformity, and/or affordability 5‐9 . Typically, to fabricate paper‐based substrates for SERS analysis, the majority of reported studies have been focused on designing SERS substrates via drop casting, 10 in situ synthesis, 11 immersion deposition, 12 inkjet printing, 13 and vacuum filtration 14 to add the NPs.…”

Extraction of Cellulose-Based Polymers from Textile Wastes

“…The gold nanoparticles were incorporated on the regenerated fibers through electrostatic interaction. The SERS scaffolding system was found very effective for identifying toxins and chemicals like dimetridazole in aqueous solutions [ 9 ]. Recycled newspaper fibers have also been collected and reinforced with high density polyethylene for potential outdoor applications.…”