Graphene quantum dots incorporated NiAl₂O₄ nanocomposite based molecularly imprinted electrochemical sensor for 5-hydroxymethyl furfural detection in coffee samples

Abstract

5-hydroxymethyl furfural (HMF) is an intermediate produced by the dehydration of sugars such as fructose, sucrose, glucose in an acidic medium or during Maillard reaction. It also occurs due to...

A novel electrochemical detection method for butylated hydroxyanisole (BHA) as an antioxidant: a BHA imprinted polymer based on a nickel ferrite@graphene nanocomposite and its application

“…It is obvious that molecular imprinting technology provides significant advantages such as selectivity, especially in sensor technology. 37,38 Therefore, both MIP-based and NIP-based electrodes were prepared and the results of BHA analysis were compared in the presence of 0.5 nM BHA. As expected, no electrochemical signals were observed without the analyte (BHA) molecule (curve a of Fig.…”

“…BHA-imprinted GCE electrodes were formed as a result of the application of a high potential (electropolymerization) in the presence of the target molecule (BHA) and a monomer (Py). 37,38 Monomer selection is significant in the molecular imprinting process. Chemical agents, which can recognize the target molecule and interact specifically, were selected in monomer selection.…”

Design of a novel Ag-MOF@GO composite with a high specific surface area and structural stability for the efficient removal of malachite green

“…To solve the above problems, many inorganic nanomaterials have been chosen to modify MOFs, among which graphene oxide (GO) has been used widely. It has the advantages of high strength and surface activity, [35][36][37][38][39] which enable it to interact with the MOF materials without any deterioration in their structure. 40 Accordingly, GO can be used as a substrate for growing MOF materials, increasing their surface area while reducing the agglomeration phenomenon.…”

Fabrication and application of a 3D-rGO electrochemical sensor for SO2 detection in ionic liquids

“…[16][17][18][19][20] Graphene can also be used as quantum dots to reduce resistance and enhance electrochemical activity. 21,22 Due to its controllable surface morphology and defects, the improved porous graphene nanoribbons have the advantages of strong pore edge ability and good stability. 23,24 Reduced graphene oxide has the advantages of a large specic surface area, good electrical conductivity and high chemical stability.…”