An electrochemical sensor based on polyelectrolyte-functionalized graphene for detection of 4-nitrophenol

2-Nitrophenol sensor-based wet-chemically prepared binary doped Co3O4/Al2O3nanosheets by an electrochemical approach

“…21 Besides this, another talented NP chemical sensor assembled with a poly(diallyldimethylammonium chloride)-functionalized graphene composite has exhibited a dynamic result of detection limit 0.02 mM with a wider linear dynamic range from 0.06 to 110 mM. 22 Due to the high toxicity of 2-NP, sustainable development of methods for its selective detection is urgently needed. Therefore, an initiative has been taken for efficient detection of 2-NP by an electrochemical sensor constructed with Co 3 O 4 / Al 2 O 3 NSs.…”

Polyelectrolyte-graphene Nanocomposites for Biosensing Applications

“…Peng et al . developed an electrochemical sensor based on PDDA-functionalized graphene for the detection of 4-Nitrophenol [ 60 ]. By optimizing experimental parameters such as the pH of the buffer solution, scan rate, accumulation time and potential, the PDDA/graphene/glassy carbon electrode sensor showed remarkable sensitivity and selectivity for 4-Nitrophenol detection (concentration range of 0.06-110 µM with a detection limit of 0.02 µM S/N = 3).…”

Layer-by-layer assembly of functionalized reduced graphene oxide for direct electrochemistry and glucose detection

“…S1 (see Supplementary data). For GPDDA and GPSS, in particular, a band at 270 nm appears due to the partial restoration of π-conjugation [38], characteristic of GO reduction. This reduction to form The growth of (GPDDA/GPSS) 1 /(GPDDA/GOx) 2 film was monitored by SPR, whose data are shown in Fig.…”

“…The effective reduction of GO is denoted by the decrease in the interplanar distance in GPDDA and GPSS. The peak for GPDDA and GPSS is broad because it corresponds to a mixture of graphene sheets with different number of layers, which are produced as a result of different stages of functionalization of GPDDA or GPSS [38,39].…”