A highly-sensitive electrochemical sensor for the simultaneous detection of Cd²⁺ and Pb²⁺ using liquid phase-exfoliated graphene

Abstract

It is quite important to develop sensitive and simple analytical methods for the detection of toxic heavy metal ions, such as Cd2+ and Pb2+.

Hierarchical MgFe-layered double hydroxide microsphere/graphene composite for simultaneous electrochemical determination of trace Pb(II) and Cd(II)

“…In spite of high sensitivity and accuracy of these methods, they are not appropriate for on-site measurements on account of cumbersome and sophisticated apparatus, complicated pretreatment procedures and tedious analysis time. By contrast, electrochemical technique has received increasing attention in the analytical field due to its fascinating features such as simple handling, rapid response, low limit of detection (LOD), superior sensitivity and favourable selectivity [22][23][24][25][26][27][28][29][30][31].…”

Evaluation of the degradation of the graphene-polypropylene composites of masks in harsh working conditions

“…The appearance of the D band suggests that graphene presents defects, and the intensity ratio between the signals 2D and G indicates that this structure consists of few-layer graphene, with an upper bound of ca. 5 layers based on the shape of the 2D peak [ 42 ]. Similarly, the Raman spectrum of pristine SHC G@PP fiber (after subtracting the PP spectrum) was analyzed, showing the characteristically reduced graphene oxide (rGO) bands, displaying the D and G modes in the same Raman shift as graphene but with the ratio I D /I G increased ( Fig.…”

Sonochemical synthesis of Cu x O/Ag nanoparticles on exfoliated graphite: Application for enhanced electrochemical detection of H 2 O 2 in milk

“…At present, most of the existing related studies use graphene oxide prepared by Hummer's method as carbon substrate to prepare metal nanoparticle composites. The preparation process is complex, and the distribution position and size of metal particles are uneven, which affects the sensing performance of the composites [20].…”