Hierarchically palladium nanoparticles embedded polyethyleneimine–reduced graphene oxide aerogel (RGA–PEI–Pd) porous electrodes for electrochemical detection of bisphenol a and H2O2

Development of Sensitive Electrochemical Sensor Based on Chi-Tosan/MWCNTs-AuPtPd Nanocomposites for Detection of Bisphenol A

“…The designed sensor was compared with the reported sensors for the detection of BPA (Table 1). As noticed, compared with the PdNPs and polyethyleneimine with graphene oxide aerogel modified electrode [34], and the electrochemical sensor based on covalent organic framework [35], the GCE/CS/MWCNTs-AuPtPd had a wider range and lower detection limit. The detection limit of the sensor in this work was much lower than the dual-signal electrochemical sensor based on nanoporous gold and prepared by Zhang et al [36].…”

“…Linear range (μM) LOD (nM) References SPCE 1 /RGA 2 -PEI 3 -Pd 1 -1000 25.5 [34] GCE/CTpPa-2 4 0.1 -50 20 [35] SPCE/MWCNTs-βCD 5 0.125 -30 13.76 [33] GCE/Tyr 6 -GDY 7 -Chi 8 0.1 -3.5 24 [15] GE/SH-β-CD 9 /NPGL 10 0.3 -100 60 [36] CPE 11 /Na-doped WO3 0.081-22.5 28 [37] GCE/MnS 0.02 -2150 6.52 [38] Fe3O4-Au@Ag@(Au@Ag) 0.0001-100 0.1 [39] MTO/Au/µ-Chip 0.0001-1000 0.0027 [40] GCE/CS/MWCNTs-AuPtPd 0.05 -100 1.4 This work…”

Biomass-based graphene aerogel for the removal of emerging pollutants from wastewater

“…1 Meanwhile, conventional aerogels are fragile and prone to mechanical deformation, and their synthesis methods are more complex and can involve chemicals with environmental concerns. There are various types of graphene aerogels such as graphene oxide aerogel, 17 reduced graphene oxide aerogel, 18 3D printed graphene aerogel, metal decorated graphene aerogel 19 and natural source derived graphene aerogel. 20 The choice of graphene aerogel depends on the intended application and the specific properties required for that application.…”

A sensitive electrochemiluminescence immunosensor for carbohydrate antigen 12-5 analysis based on dual-function SnO2 nanoflowers

“…Their basic research and applications in sensors have been subjected to an area of concern in terms of chemical and biological analyses. 25 27,28 In this study, PEI was selected as the stabilizer and dispersant of SnO 2 NFs. After the surface modification of SnO 2 NFs, PEI not only improved the water solubility of SnO 2 NFs but also endowed SnO 2 NFs with abundant -NH 2 groups, which was conducive to connecting with other nanomaterials.…”

“…Polyethylenimine (PEI) is a cationic polyelectrolyte rich in amine, which has excellent hydrophilicity and easily forms complexes with metal ions. 27,28 In this study, PEI was selected as the stabilizer and dispersant of SnO 2 NFs. After the surface modification of SnO 2 NFs, PEI not only improved the water solubility of SnO 2 NFs but also endowed SnO 2 NFs with abundant –NH 2 groups, which was conducive to connecting with other nanomaterials.…”