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Morphology and Oxidation State Dependent Glucose Sensing Properties of Cu-Oxide Nanocrystals.
- Source :
- Analytical & Bioanalytical Electrochemistry; Nov2022, Vol. 14 Issue 11, p998-1010, 13p
- Publication Year :
- 2022
-
Abstract
- Several morphologically different Cu-oxide nanocrystals (cube, exposing only the (100) facets; elongated octahedron, exposing only the (111) facets; normal octahedron, exposing only the (111) facets; rounded octahedron, exposing only the (111) facets; truncated edge cube, exposing the (100), (110), and (111) facets) have been prepared. Mixed oxidation state facets were obtained, with the X-ray Photoelectron Spectroscopy revealing that both CuI and CuII are present in the samples. The % CuI and CuII vary for the different morphologies. Morphologies exposing the (111) facet showed the highest % CuI present, with the morphologies exposing the (100) facet showing the least amount of CuI. The glassy carbon electrode's surface was modified with these Cu-oxide nanocrystals and their sensing performance for glucose detection was investigated. The limits of detection (LOD) observed for all the Cu-oxide nanocrystal electrodes were < 2 µM. Electrodes modified with Cu-oxide nanocrystals exposing the (111) facets and having more CuI present in the sample resulted in better glucose detection limits. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20084226
- Volume :
- 14
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Analytical & Bioanalytical Electrochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 160640982