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Peer-reviewedCC BYACS omega

Scalable Fabrication of Stainless Steel–CuO Hybrid Nanostructured Electrodes for Nonenzymatic Glucose Sensing

  • Kelly T. C. Thomaz1,2
  • Jordelson A. A. Junior2,1
  • Raphael M. V. Rocha2
  • Fernando I. L. Leite2
  • William Reis de Araujo1
  • Andrei Alaferdov3
  1. 1Universidade Estadual de Campinas , , , ,
  2. 2Instituto de Pesquisas Eldorado , , , ,
  3. 3Universidade Estadual de Campinas , , ,
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Abstract

A hybrid nanostructure electrode consisting of stainless-steel films decorated with copper oxide nanoparticles (CuONPs) was fabricated via direct current (DC) sputtering followed by thermal oxidation, and its structural, chemical, and electrochemical properties were systematically investigated. The nanoscale morphology and structure were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), including selected area electron diffraction (SAED), revealing well-defined copper nanostructures anchored to the stainless-steel surface. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) confirmed the high crystallinity of the CuONPs and the coexistence of Cu+ and Cu2+ species (Cu2O, CuO, Cu(OH)2). Electrochemical studies in an alkaline medium demonstrated that the Cu+/Cu2+ active layer exhibits significant electrocatalytic activity toward glucose oxidation, producing a pronounced anodic response around 0.6 V vs carbon pseudoreference. The combination of crystalline CuONPs and a robust stainless-steel support, fabricated via a scalable process, makes this hybrid structure a promising candidate for nonenzymatic glucose detection.

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Cite

BibTeXRIS
BibTeX
@article{thomaz2026scalable,
  title = {{Scalable Fabrication of Stainless Steel–CuO Hybrid Nanostructured Electrodes for Nonenzymatic Glucose Sensing}},
  author = {Kelly T. C. Thomaz and Jordelson A. A. Junior and Raphael M. V. Rocha and Fernando I. L. Leite and William Reis de Araujo and Andrei Alaferdov},
  journal = {ACS omega},
  year = {2026},
  month = oct,
  doi = {10.1021/acsomega.6c08394},
  url = {https://europepmc.org/article/PMC/PMC13670281},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Scalable Fabrication of Stainless Steel–CuO Hybrid Nanostructured Electrodes for Nonenzymatic Glucose Sensing
AU  - Kelly T. C. Thomaz
AU  - Jordelson A. A. Junior
AU  - Raphael M. V. Rocha
AU  - Fernando I. L. Leite
AU  - William Reis de Araujo
AU  - Andrei Alaferdov
PY  - 2026
DA  - 2026/10/02
JO  - ACS omega
DO  - 10.1021/acsomega.6c08394
UR  - https://europepmc.org/article/PMC/PMC13670281
AB  - A hybrid nanostructure electrode consisting of stainless-steel films decorated with copper oxide nanoparticles (CuONPs) was fabricated via direct current (DC) sputtering followed by thermal oxidation, and its structural, chemical, and electrochemical properties were systematically investigated. The nanoscale morphology and structure were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), including selected area electron diffraction (SAED), revealing well-defined copper nanostructures anchored to the stainless-steel surface. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) confirmed the high crystallinity of the CuONPs and the coexistence of Cu+ and Cu2+ species (Cu2O, CuO, Cu(OH)2). Electrochemical studies in an alkaline medium demonstrated that the Cu+/Cu2+ active layer exhibits significant electrocatalytic activity toward glucose oxidation, producing a pronounced anodic response around 0.6 V vs carbon pseudoreference. The combination of crystalline CuONPs and a robust stainless-steel support, fabricated via a scalable process, makes this hybrid structure a promising candidate for nonenzymatic glucose detection.
SN  - 2470-1343
ER  -