%0 Journal Article %T Morphology and Oxidation State Dependent Glucose Sensing Properties of Cu-Oxide Nanocrystals %J Analytical and Bioanalytical Electrochemistry %I Analytical and Bioanalytical Electrochemistry is an international scientific journal, which is published online every 3 months (since 2009), every 2 months (since 2011) and monthly (since 2018) by Center of Excellence in Electrochemistry, University of Tehran %Z - %A Jacobs, Carla %A Erasmus, Elizabeth %D 2022 %\ 11/30/2022 %V 14 %N 11 %P 998-1010 %! Morphology and Oxidation State Dependent Glucose Sensing Properties of Cu-Oxide Nanocrystals %K Cu-oxide %K Nanocrystals %K Non-enzymatic glucose sensor %K XPS %K Oxidation state %R %X 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. %U https://www.abechem.com/article_698012_93245a2ccc11404d03f406e50f8468d6.pdf