Protein templated Au-CuO bimetallic nanoclusters toward neutral glucose sensing
- Received Date: 2020-05-26
- Accepted Date: 2020-07-18
- Rev Recd Date: 2020-06-30
- Available Online: 2020-07-31
Abstract: In this study, the application of bovine serum albumin (BSA) to glucose- sensitive materials was proposed for the first time. Au-CuO bimetallic nanoclusters (Au-CuO/BSA) were prepared using BSA as a template, the new sensing material (Au-CuO/BSA/MWCNTs) was synthesized by mixing with multi-walled carbon nanotubes (MWCNT) and applied to non-enzymatic electrochemical sensors to detect glucose stably and effectively under neutral conditions. The scanning electron microscopy was used to investigate the morphology of the synthesized nanocomposite. The electrochemical properties of the sensor were studied by cyclic voltammetry. Glucose detection experiments showed that Au-CuO/BSA/MWCNTs/Au electrode had good glucose detection ability, stability, accuracy, repeatability, and high selectivity in neutral environment. Unlike existing glucose-sensitive materials, due to the use of BSA, the composite material is firmly fixed to the electrode surface without a Nafion solution, which reduces the current blocking effect on the modified electrode. The composite materials can be effectively preserved for extremely long periods, higher than 80% activity was maintained at room temperature in a closed environment for 3 to 4 months, due to the special effects of BSA. In addition, the feasibility of using BSA in glucose-sensitive materials was confirmed.
|Citation:||Hong-Wei Lv, Hui-ling Peng, Quan-Fu Li. Protein templated Au-CuO bimetallic nanoclusters toward neutral glucose sensing[J]. Chinese Journal of Chemical Physics .|