Zn‐doped NiCo2O4 as Modified Electrode Nanomaterials for Enhanced Electrochemical Detection Performance of Cu(II). Issue 12 (2nd December 2021)

• Record Type: Journal Article
• Authors: Jiang, Rong; Chen, Long; Bai, Xuemei; Ye, Jiahui; Luo, Yun; Wang, Liping; Fan, Changchun; Li, Haoquan; Shi, Yulin; Xu, Yisheng
• Is Part Of: Electroanalysis. Volume 34:Issue 12(2022)
• Page Start: 1844
• Page End: 1853
• Publication Date: 2021-12-02
• Subjects: Zn-doping -- Electrochemical sensors -- Coprecipitation -- Ternary spinel oxide -- Cu(II), NiCo2O4; Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.202100347
• Languages: English
• ISSNs: 1040-0397

Abstract

Abstract: A novel nano‐ternary spinel oxides of Zn−Ni‐Co−O are synthesized via the coprecipitation method and used for detection towards Cu(II). The Zn doping effect on morphologies and microstructures of Znx Ni1‐x Co2 O4 (x=0, 0.2, 0.4, 0.6, 0.8, 1.0) is systematically characterized and investigated. At the x of 0.4, the prepared Zn0.4 Ni0.6 Co2 O4 modified electrode nanomaterials can realize electrochemical ultratrace detection of Cu(II), which shows the lowest detection limit of 1.96 nM with a linear range of 0.1 μM∼1.0 μM and the highest sensitivity of 15.2 μA/μM. Meanwhile, Zn0.4 Ni0.6 Co2 O4 modified electrodes exhibit excellent repeatability (relative standard deviation (RSD) of 0.34 %), reproducibility (RSD of 0.3 %), stability (RSD of 3.0 %) as well as anti‐interference analysis, which has been successfully applied in the actual water environment. These results indicate that Znx Ni1‐x Co2 O4 nanoparticles as a promising modified electrode materials for the electrochemical detection Cu(II). Abstract :