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Analytical and Bioanalytical Electrochemistry، جلد ۱۴، شماره ۱۱، صفحات ۹۹۸-۱۰۱۰
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عنوان انگلیسی Morphology and Oxidation State Dependent Glucose Sensing Properties of Cu-Oxide Nanocrystals
چکیده انگلیسی مقاله 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.
کلیدواژه‌های انگلیسی مقاله Cu-oxide,Nanocrystals,Non-enzymatic glucose sensor,XPS,Oxidation state
نویسندگان مقاله Carla Jacobs |
Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa

Elizabeth Erasmus |
Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa

نشانی اینترنتی https://www.abechem.com/article_698012_93245a2ccc11404d03f406e50f8468d6.pdf
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