{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T22:37:30Z","timestamp":1788561450536,"version":"build-2803163510"},"reference-count":40,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2021,3,15]],"date-time":"2021-03-15T00:00:00Z","timestamp":1615766400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>CuBi2O4 synthesized by thermolysis of a new Bi(III)-Cu(II) oxalate coordination compound, namely Bi2Cu(C2O4)4\u00b70.25H2O, was tested through its integration within carbon nanofiber paste electrode, namely CuBi\/carbon nanofiber (CNF), for the electrochemical detection of amoxicillin (AMX) in the aqueous solution. Thermal analysis and IR spectroscopy were used to characterize a CuBi2O4 precursor to optimize the synthesis conditions. The copper bismuth oxide obtained after a heating treatment of the precursor at 700 \u00b0C\/1 h was investigated by an X-ray diffraction and scanning electron microscopy. The electrochemical behavior of CuBi\/CNF in comparison with CNF paste electrode showed the electrocatalytic activity of CuBi2O4 toward amoxicillin detection. Two potential detections, with one at the potential value of +0.540 V\/saturated calomel electrode (SCE) and the other at the potential value of \u22121.000 V\/SCE, were identified by cyclic voltammetry, which were exploited to develop the enhanced voltammetric and\/or amperometric detection protocols. Better electroanalytical performance for AMX detection was achieved for CuBi\/CNF using differential-pulsed and square-wave voltammetries than others reported in the literature. Very nice results obtained through anodic and cathodic currents recorded at +0.750 V\/SCE and \u22121.000 V\/SCE in the same time period using a pseudo multiple-pulsed amperometry technique showed the great potential of the CuBi\/CNF paste electrode for practical applications in amoxicillin detection in aqueous solutions.<\/jats:p>","DOI":"10.3390\/nano11030740","type":"journal-article","created":{"date-parts":[[2021,3,15]],"date-time":"2021-03-15T22:16:54Z","timestamp":1615846614000},"page":"740","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["CuBi2O4 Synthesis, Characterization, and Application in Sensitive Amperometric\/Voltammetric Detection of Amoxicillin in Aqueous Solutions"],"prefix":"10.3390","volume":"11","author":[{"given":"Raluca","family":"Dumitru (m.Vod\u0103)","sequence":"first","affiliation":[{"name":"Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Piata Victoriei No. 2, 300006 Timisoara, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sorina","family":"Negrea","sequence":"additional","affiliation":[{"name":"National Institute of Research and Development for Industrial Ecology (INCD ECOIND), 300431 Timisoara, Romania"},{"name":"Department of Environmental Engineering and Management, \u201cGheorghe Asachi\u201d Technical University of Iasi, 700050 Iasi, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cornelia","family":"P\u0103curariu","sequence":"additional","affiliation":[{"name":"Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Piata Victoriei No. 2, 300006 Timisoara, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4207-5380","authenticated-orcid":false,"given":"Adrian","family":"Surdu","sequence":"additional","affiliation":[{"name":"Department of Oxide Materials Science and Engineering, Faculty of Applied Chemistry and Materials Science, Polytehnic University of Bucharest, Gh. Polizu Street No. 1\u20137, 011061 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adelina","family":"Ianculescu","sequence":"additional","affiliation":[{"name":"Department of Oxide Materials Science and Engineering, Faculty of Applied Chemistry and Materials Science, Polytehnic University of Bucharest, Gh. Polizu Street No. 1\u20137, 011061 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aniela","family":"Pop","sequence":"additional","affiliation":[{"name":"Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Piata Victoriei No. 2, 300006 Timisoara, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1285-6634","authenticated-orcid":false,"given":"Florica","family":"Manea","sequence":"additional","affiliation":[{"name":"Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, Piata Victoriei No. 2, 300006 Timisoara, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,3,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2317","DOI":"10.30638\/eemj.2014.259","article-title":"Simultaneous arsenic (III) and lead (II) detection from aqueous solution by anodic stripping square-wave voltammetry","volume":"13","author":"Baciu","year":"2014","journal-title":"Environ. 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