CuMnO2 nanoflakes as pH-switchable catalysts with multiple enzyme-like activities for cysteine detection

The Fabrication of Amino Acid Incorporated Nanoflowers with Intrinsic Peroxidase-like Activity and Its Application for Efficiently Determining Glutathione with TMB Radical Cation as Indicator

“…As for the detection of GSH, the values of σ, k and LOD (H 2 O 2 ) are 4.9 × 10 −4 , 0.01539 and 95.52 nM, respectively. The published results about GSH and H 2 O 2 detection using the enzymatic-like activity of the peroxidase mimics are listed in Tables S1 and S2 [ 37 , 39 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 ]. It can be deduced from Tables S1 and S2 that the hybrid nanoflowers represent a satisfactory limit of detection as well as a wide linear range when detecting GSH and H 2 O 2 as compared with other peroxidase mimics.…”

“…In this work, the selectivity of the detection system towards GSH was investigated by adding various interference species. As illustrated in Figure 10, no obvious change in the value of ΔA can be observed after adding the above-mentioned interference sub- GSH and H2O2 detection using the enzymatic-like activity of the peroxidase mimics are listed in Tables S1 and S2 [37,39,[60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76]. It can be deduced from Tables S1 and S2 that the hybrid nanoflowers represent a satisfactory limit of detection as well as a wide linear range when detecting GSH and H2O2 as compared with other peroxidase mimics.…”

“…It can be deduced from Tables S1 and S2 that the hybrid nanoflowers represent a satisfactory limit of detection as well as a wide linear range when detecting GSH and H 2 O 2 as compared with other peroxidase mimics. GSH and H2O2 detection using the enzymatic-like activity of the peroxidase mimics are listed in Tables S1 and S2 [37,39,[60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76]. It can be deduced from Tables S1 and S2 that the hybrid nanoflowers represent a satisfactory limit of detection as well as a wide linear range when detecting GSH and H2O2 as compared with other peroxidase mimics.…”

Oxygen Vacancy‐Engineered PEGylated MoO3−x Nanoparticles with Superior Sulfite Oxidase Mimetic Activity for Vitamin B1 Detection

“…Meanwhile, the kinetic parameters of SuO x ‐like activity of P‐MoO 3 −x NPs were measured based on the Michaelis–Menton model and Lineweaver–Burk equation, and the results were listed in Table S3 in the Supporting Information. P‐MoO 3 −x NPs have a higher K m (0.12 × 10 −3 m ) value towards sulfite than human SuO x ( K m (SO 3 2− ) = 0.017 × 10 −3 m ), demonstrating its lower affinity for sulfite as substrate.…”

“…Moreover, the concentration of detectible VB1 was 0.67 µg mL −1 with a good linear range within 0.67–202.38 µg mL −1 (0.2–600 × 10 −3 m , R 2 = 0.997). The limit of detection (LOD, S/N = 3) for VB1 was 0.46 µg mL −1 . Despite various analytic techniques have been carried out for the detection of VB1, such as high performance liquid chromatography (HPLC), spectrofluorimetric, and electrochemical methods, the unstable signal, complicated and high cost of operation limit their practical applications.…”