title: Green in-situ synthesized silver nanoparticles embedded in bacterial cellulose nanopaper as a bionanocomposite plasmonic sensor.
abstract: Herein, we introduce a new strategy for green, in-situ generation of silver nanoparticles using flexible and transparent bacterial cellulose nanopapers. In this method, adsorbed silver ions on bacterial cellulose nanopaper are reduced by the hydroxyl groups of cellulose nanofibers, acting as the reducing agent producing a bionanocomposite "embedded silver nanoparticles in transparent nanopaper" (ESNPs). The fabricated ESNPs were investigated and characterized by field emission scanning electron microscopy (FE-SEM), UV-visible spectroscopy (UV-vis), Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and energy-dispersive X-ray spectroscopy (EDX). The important parameters affecting the ESNPs were optimized during the fabrication of specimens. The resulting ESNPs were used as a novel and sensitive probe for the optical sensing of cyanide ion (CN(-)) and 2-mercaptobenzothiazole (MBT) in water samples with satisfactory results. The change in surface plasmon resonance absorption intensity of ESNPs was linearly proportional to the concentration in the range of 0.2-2.5 µg mL(-1) and 2-110 µg mL(-1) with a detection limit of 0.012 µg mL(-1) and 1.37 µg mL(-1) for CN(-) and MBT, respectively.
authors.affiliation: Department of Chemistry, College of Science, Shahid Chamran University, Ahvaz, Iran. Electronic address: npourreza@scu.ac.ir.
authors.forename: Nahid
authors.initials: N
authors.lastname: Pourreza
authors.affiliation: Department of Chemistry, College of Science, Shahid Chamran University, Ahvaz, Iran.
authors.forename: Hamed
authors.initials: H
authors.lastname: Golmohammadi
authors.affiliation: Department of Chemistry, College of Science, Shahid Chamran University, Ahvaz, Iran.
authors.forename: Tina
authors.initials: T
authors.lastname: Naghdi
authors.affiliation: Department of Wood Science and Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan 4913815739, Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Yousefi
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis; D004867:Equipment Design; D019544:Equipment Failure Analysis; D041822:Gluconacetobacter xylinus / Q000378:metabolism*; D055772:Green Chemistry Technology / Q000379:methods; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D053761:Nanocomposites / Q000737:chemistry / Q000648:ultrastructure; D010209:Paper; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D020099:Coated Materials, Biocompatible; D014874:Water Pollutants, Chemical; D012834:Silver; D002482:Cellulose
keywords: 2-mercaptobenzothiazole; Bacterial cellulose nanopaper; Bionanocomposite; Cyanide; Optical sensor; Silver nanoparticle