Silver-Nanocellulose Composite Used as SERS Substrate for Detecting Carbendazim

Abstract

Nanocellulose is an abundant green resource that, owing to the larger surface area, length, and diameter of the fibers, can be used as a framework for loading Ag nanoparticles and serve as substrate for surface enhancement Raman scattering (SERS). These properties would cause the hydroxyl groups on the surface to adsorb the Ag ions and reduce them to Ag seed to form a load fulcrum. This paper presents a convenient and environmentally friendly method for the fabrication of silver-nanocellulose composites (NCF-Ag). A commonly used pesticide, carbendazim (CBZ), was used as a SERS probe to evaluate the properties of NCF-Ag. The results showed that NCF-Ag possesses good homogeneity, reproducibility, and stability. Additionally, CBZ was found to have a low limit of detection (LOD), i.e., 1.0 × 10−8 M, which indicates the possibility for trace analysis. Furthermore, it presents good linearity with R2 = 0.98 at 1007 and 1270 cm−1 in the range from 10−4~10−7 M CBZ.

A Novel Cu2O/ZnO@PET Composite Membrane for the Photocatalytic Degradation of Carbendazim

“…Czm is very stable in water (half-life of 5–26 days), wastewater, soil, crops and food, and is toxic to humans, animals and plants [ 4 , 5 , 6 ]. Since Czm is identified as a pollutant of water resources where it can accumulate, it is important to study the processes that lead to its detection [ 7 , 8 ], degradation [ 9 ] and removal. Currently, sorption [ 10 ], radiolytic [ 3 , 11 ] and catalytic degradation [ 12 ], oxidation and ozonation [ 13 , 14 ], membrane distillation [ 15 ], as well as a variety of microbiological methods [ 16 ] are successfully used to remove Czm from aqueous media.…”

On the mineralization of nanocellulose to produce functional hybrid materials

“…58 The development of NC/MNP hybrid materials is an excellent way to obtain high-performance materials, loading or assembling various MNPs on NC via chemical reduction, 59 reduction by UV irradiation, and thermal reduction synthesis. 60 The applications of these hybrid materials include plasmonic sensors, 61 wound dressings, 62 visual detection of volatile compounds, 63 surface-enhanced Raman scattering (SERS) detection, 64 and catalysis. 65…”

Ultrasensitive Physical, Bio, and Chemical Sensors Derived from 1‐, 2‐, and 3‐D Nanocellulosic Materials

“…Due to the high sensitivity, specificity, and rapid response in detection of chemical and biological analytes, SERS has been regarded as a sensitive and label‐free analytical tool 13. Nanocellulose is a good substrate for SERS because it has a large specific surface area and high aspect ratio 82. Chen et al81 developed a AgNPs‐decorated nanocellulose substrate for rapid in situ noninvasive pesticide detection in fruits/vegetables by SERS.…”

“…This SERS method coupled with AgNPs/nanocellulose substrate exhibits a detection limit of 0.5 ng cm −2 for thiram and 5 ng cm −2 for thiabendazole, respectively. Huang et al82 also developed a silver‐nanocellulose composite‐based substrate for the detection of carbendazim (CBZ) that is a commonly used pesticide. The abundant hydroxyl groups on nanocellulose surfaces can adsorb silver ions, and a stable, homogeneous and reproducible silver/nanocellulose composite can be obtained after the reduction of the silver ions.…”