Graphene based nanosensor for aqueous phase detection of nitroaromatics

Abstract

Nitroaromatics sensor composed of monolayer graphene and molecularly imprinted chitosan thin film was fabricated and responded selectively against imprinted nitrotriazolone.

Advancements in nanomaterials for nanosensors: a comprehensive review

“…Techniques to improve graphene's selectivity for ETD have included peptide modications, nanoparticle incorporation, doping, 245 adding organic polymers, and further peptide adjustments. 246,247 Research has primarily focused on nitroaromatic compounds, yet the remarkable conductive properties of both single-walled (SW) and multi-walled (MW) CNTs have been explored for explosives sensing. Studies by Woods and Star have highlighted the critical role of charge-transfer and p-stacking interactions between CNTs and nitroaromatic explosives, 248,249 indicating the vast potential of these carbon-based materials in advancing ETD sensor technology.…”

Overview of nano enabled sensor for analysis of explosive substances

“…Peptide modifications, nanoparticles, doping, [52] organic polymers, and peptide modifications are examples of techniques used to increase the selectivity of graphene materials for ETD. [53,54] With the majority of investigations concentrating on nitroaromatic materials, the high conductivity of single walled (SW) and multi-walled (MW) carbon nanotubes has also been examined for explosives detection (Figure 4). According to research by Woods and Star, the interactions involving CNTs and nitroaromatic explosives entail both charge-transfer and stacking effects.…”

Recent Developments in the Field of Explosive Trace Detection

“…Efforts to improve the selectivity of graphene materials for ETD include; peptide modifications, 136 nanoparticles, 137 doping 98,138 and organic polymers. 139,140 The high conductivity of single walled (SW), multi-walled (MW) carbon nanotubes, have also been investigated for explosives detection with the majority of studies focused on nitroaromatic materials. Studies by Woods and Star show the interactions between CNTs and nitroaromatic explosives involve a combination of π-π stacking and charge-transfer effects.…”

“…The 2D structure of graphene provides a high surface area to volume ratio, and the sp 2 network facilitates π–π interactions, which is favorable for the detection of electron-deficient nitroaromatic explosives. , Introducing oxygen functional moieties, either chemically as graphene oxide or through the fabrication process, can further improve sensitivity through van der Waals interactions with the NO 2 groups. Efforts to improve the selectivity of graphene materials for ETD include peptide modifications, nanoparticles, doping, , and organic polymers. , …”