Cadmium cobaltite nanosheets synthesized in basic deep eutectic solvents with oxidase-like, peroxidase-like, and catalase-like activities and application in the colorimetric assay of glucose

Ionic liquids and deep eutectics as a transformative platform for the synthesis of nanomaterials

“…270 This category of polyol:hydroxide systems were expanded to different alkali metal hydroxides and higher PEG weights (PEG400, PEG600) in the preparation of nanoparticulate transition metal oxides, cobaltites, manganites, and cuprites, under mild conditions and in sheet morphologies, 271 and was also used for CdCo 2 O 4 . 272 273 Various nanoporous (silver) selenidostannates were prepared by Wang et al from eutectic mixtures of alkylamine hydrochlorides, with interesting tuneable properties such as reversible thermochromism. 274 It has been shown that the choice of DES strongly dictates the growth process.…”

“…270 This category of polyol:hydroxide systems were expanded to different alkali metal hydroxides and higher PEG weights (PEG400, PEG600) in the preparation of nanoparticulate transition metal oxides, cobaltites, manganites, and cuprites, under mild conditions and in sheet morphologies, 271 and was also used for CdCo 2 O 4 . 272 Nanosheets of either single-metal or high-entropy metal phosphides were achieved by direct calcination of DES comprising tetrabutylphosphonium chloride:ethylene glycol, and containing either the respective metal chlorides, or an equimolar mixture of CoCl 2 Á6H 2 O, CrCl 3 Á6H 2 O, FeCl 3 Á6H 2 O, MnCl 2 Á4H 2 O, and NiCl 2 Á 6H 2 O. 273 Various nanoporous (silver) selenidostannates were prepared by Wang et al from eutectic mixtures of alkylamine hydrochlorides, with interesting tuneable properties such as reversible thermochromism.…”

Triple-enzyme mimetic activity of Fe3O4@C@MnO2 composites derived from metal–organic frameworks and their application to colorimetric biosensing of dopamine

“…Nanomaterials with high multi-enzyme activities tend to have greater advantages and application prospects in many fields. However, only a few nanomaterials have been reported to display multi-enzyme activities, like Co 3 O 4 [14], NiPd hollow NPs [15], MFe 2 O 4 (M = Mg, Ni, Cu) [16], V 6 O 13 [17], CoMo hybrids [18], Co 2 V 2 O 7 [19], Cu 3 V 2 O 7 (OH) 2 nanoribbons [20], CdCo 2 O 4 nanosheets [21], CDs@Cu 4 O 3 nanocomposites [22], Bi@PVP@AuPt nanoparticles [23], Fe 3 C decorated carbon nanofibers [24], and copper nanoclusters (Cu NCs) [25]. However, these reported multi-enzyme-like nanozymes are weakly magnetic or nonmagnetic, and most of them are metal oxides composed of noble metals with high cost, which may lead to difficult separation and easy agglomeration of the nanozymes in their application.…”

Nanozyme‐based luminescence detection

“…To date, nanozymes have been reported to mimic oxidase, peroxidase, catalase, superoxide dismutase, alkaline phosphatase, and nuclease. [ 4–8 ] Nanozymes have been widely used for analytical applications [ 9–15 ] such as replacing horseradish peroxidase (HRP) for signal amplification in immunoassays. In addition, some molecules can regulate the activity of nanozymes and therefore are classified as promotors or inhibitors.…”