Co₃O₄-CuNi/reduced graphene composite for non-enzymatic detection of ascorbic acid

Selective fluorescence detection of acetylsalicylic acid, succinic acid and ascorbic acid based on a responsive lanthanide metal fluorescent coordination polymer

“…AA is one of the important vitamins and usually distributed in food, plant and animal tissues, and it plays crucial roles in inhibiting cancer, clearing free radicals, and preventing biological reactions. 52,53 Thus, the establishment of selective, simple, and reliable methods for AA determination is benecial for medical diagnosis and diet. 54 The uorescence intensity of the reaction solution increased with the increase in the concentration of AA (Fig.…”

Enhancing electrochemical sensing through the use of functionalized graphene composites as nanozymes

“…Nanozyme materials benefiting from all the advantages of rGO nanomaterial have also been intensively studied for the determination of inorganic compounds such as H 2 O 2 , 100–107 nitrite, 108,109 organic compounds, CAT, 110–114 HQ, 110,112,114,115 chicoric acid, 116 xanthine, 117 methyl parathion and 4-nitrophenol, 118 and also biomolecules such as hormones, 119,120 cancer biomarkers, 121–124 AA, 125,126 and glucose, 127 as summarized in Table 3.…”

“…An immunosensor based on SWCNTs-GQDs on AuNPs-rGO 121 was prepared to immobilize the antibody anti-CEA, capable of determining CEA, as low as 5.3 pg mL −1 , with very good results when tested in human serum samples. A Co 3 O 4 –CuNi/rGO composite 126 was developed by the 2-step hydrothermal method and deposited on top of a GCE to detect AA, an essential vitamin. The linear range exhibited by the AA sensor ranged from 10 to 100 μM, and the LOD was 0.34 μM.…”

A ratiometric fluorescence method based on silicon nanoparticles/o-phenylenediamine/MnO2 nanosheet systems for vitamin C detection

“…Recently, various methods have been developed for the detection of VC, such as high performance liquid chromatography (HPLC), 5 electrochemical methods, 6,7 colorimetric methods [8][9][10] and fluorescence methods. 2,[11][12][13] Among these, fluorescence methods have attracted much attention owing to their advantages of high sensitivity, rapid response, convenient operation and inexpensive instruments.…”