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Combinatorial Discovery of Alloy Electrocatalysts for Amperometric Glucose Sensors
Abstract
Combinatorial methods were used to search for active alloy electrocatalysts for use in enzyme-free amperometric glucose sensors. Electrode arrays (715-member) containing combinations of Pt, Pb, Au, Pd, and Rh were prepared and screened by converting anodic current to visible fluorescence. The most active compositions contained both Pt and Pb. Bulk quantities of catalysts with compositions corresponding to those identified in the screening experiments were prepared and characterized. The best alloy electrocatalysts catalyzed glucose oxidation at substantially more negative potentials than pure platinum in enzyme-free voltammetric measurements. They were also insensitive to potential interfering agents (ascorbic and uric acids, and 4-acetamidophenol), which are oxidized at slightly more positive potentials. Rotating disk electrode (RDE) experiments were carried out to study the catalytic mechanism. The improvement in catalytic performance was attributed to the inhibition of adsorption of oxidation products, which poison Pt electrodes.
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Cited by
Platinum-Based Nanostructured Materials: Synthesis, Properties, and Applications
Chen, A., & Holt-Hindle, P. (2010) · Chemical Reviews · doi:10.1021/cr9003902 · Cited by 1,390
A Comprehensive Review of Glucose Biosensors Based on Nanostructured Metal-Oxides
Rahman, M. M., Ahammad, A. J. S., Jin, J.-H., Ahn, S. J., & Lee, J.-J. (2010) · Sensors · doi:10.3390/s100504855 · Cited by 762
Jiang, L.-C., & Zhang, W.-D. (2010) · Biosensors and Bioelectronics · doi:10.1016/j.bios.2009.10.038 · Cited by 667
An improved sensitivity non-enzymatic glucose sensor based on a CuO nanowire modified Cu electrode
Zhuang, Z., Su, X., Yuan, H., Sun, Q., Xiao, D., & Choi, M. M. F. (2008) · The Analyst · doi:10.1039/b712970j · Cited by 481
Highly Ordered Platinum‐Nanotubule Arrays for Amperometric Glucose Sensing
Yuan, J. H., Wang, K., & Xia, X. H. (2005) · Advanced Functional Materials · doi:10.1002/adfm.200400321 · Cited by 432
Metadata
- Authors
- Sun, Y., Buck, H., & Mallouk, T. E.
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-03-02
- Volume
- 73
- Issue
- 7
- Pages
- 1599-1604
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2036304068
- Cited by
- 306
- References
- 0
- FWCI
- 4.18
- Type
- journal article
- Language
- en
- Open access
- closed
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