Citation: WANG Wen-Jun, WU Yan-Hong, LIN Xiu-Ling, CHEN Wei, LIU Ai-Lin, PENG Hua-Ping. Synthesis of Au-WS₂ Nanocomposites and Study on Its Peroxidase Mimic Activity[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(10): 1545-1551. doi: 10.11895/j.issn.0253-3820.181107 shu

Synthesis of Au-WS₂ Nanocomposites and Study on Its Peroxidase Mimic Activity

1.
Department of Pharmaceutical Analysis of the Fujian Medical University, Fuzhou 350004, China;
2.
The Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Fujian Medical Univeristy, Fuzhou 350004, China

Received Date: 9 February 2018
Revised Date: 30 August 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (No.21675024), the Joint Funds for the Innovation of Science and Technology, Fujian Province (Nos. 2016Y9054, 2016Y9056) and the Funds of Clinical Experiment Platform of Fujian Province, China (No. FYKFKT-201707)

Gold nanoclusters-tungsten sulfide nanocomposites (Au-WS₂ NCs) were synthesized through electrostatic self-assembly method. The synthesized Au-WS₂ NCs could effectively catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of H₂O₂ due to its excellent peroxidase-like catalytic activity. The effects of Au-WS₂ NCs/TMB/H₂O₂ coloration conditions on peroxidase-like activity of Au-WS₂ NCs were investigated and the steady-state kinetic analysis was carried out. The experimental results showed that the Au-WS₂ NCs catalytic reaction using H₂O₂ and TMB as reaction substrates followed a typical Michaelis-Menten kinetic model. Based on the intrinsic peroxidase-like activity of Au-WS₂ NCs and that glucose could be oxidized by glucose oxidase to produce H₂O₂, a colorimetric detection method for H₂O₂ and glucose was established and the detection limits were 6.0×10^-7 mol/L and 3.1×10^-6 mol/L, respectively. Thus, a new colorimetric method was developed, which provided a significant reference value for other types of peroxidase mimics.
- Gold nanoclusters,
- Tungsten disulfide nanosheet,
- Peroxidase mimic,
- Colorimetric analysis
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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis of Au-WS2 Nanocomposites and Study on Its Peroxidase Mimic Activity

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通讯作者: 陈斌, bchen63@163.com

Synthesis of Au-WS₂ Nanocomposites and Study on Its Peroxidase Mimic Activity