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Dumbbell-like PtPd–Fe3O4 Nanoparticles for Enhanced Electrochemical Detection of H2O2
Abstract
Dumbbell-like Pt(x)Pd(100-x)-Fe(3)O(4) nanoparticles (NPs) were synthesized and studied for electrocatalytic reduction and sensing of H(2)O(2). In 0.1 M phosphate buffered saline (PBS) solution, the 4-10 nm Pt(x)Pd(100-x)-Fe(3)O(4) NPs showed the Pt/Pd composition-dependent catalysis with Pt(48)Pd(52)-Fe(3)O(4) NPs having the best activity. The Pt(48)Pd(52)-Fe(3)O(4) NPs were tested for H(2)O(2) detection, and their H(2)O(2) detection limit reached 5 nM, which was suitable for monitoring H(2)O(2) generated from Raw 264.7 cells. These dumbbell-like PtPd-Fe(3)O(4) NPs are the most sensitive probe ever reported and can be used to achieve real-time quantitative detection of H(2)O(2) in biological environment for biological and biomedical applications.
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Advances in enzyme-free electrochemical sensors for hydrogen peroxide, glucose, and uric acid
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Metadata
- Authors
- Sun, X., Guo, S., Liu, Y., & Sun, S.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-08-31
- Volume
- 12
- Issue
- 9
- Pages
- 4859-4863
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2417846626
- Cited by
- 322
- References
- 1
- FWCI
- 18.72
- Type
- journal article
- Language
- en
- Open access
- closed
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