Investigation of T site variation in spinel aluminates TAl2O4 (T= Mg, Zn & Cu), and formation of electrocatalyst CuAl2O4/carbon for efficient sensing application

Po Chou Chen; Anindita Ganguly; Tata Sanjay Kanna Sharma; Kuan-Yu Chou; Shu-Mei Chang; Kuo-Yuan Hwa

doi:10.1016/j.chemosphere.2022.134458

Investigation of T site variation in spinel aluminates TAl2O4 (T= Mg, Zn & Cu), and formation of electrocatalyst CuAl2O4/carbon for efficient sensing application

Chemosphere. 2022 Aug:301:134458. doi: 10.1016/j.chemosphere.2022.134458. Epub 2022 Apr 19.

Authors

Po Chou Chen¹, Anindita Ganguly², Tata Sanjay Kanna Sharma³, Kuan-Yu Chou¹, Shu-Mei Chang⁴, Kuo-Yuan Hwa⁵

Affiliations

¹ Graduate Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, Taiwan, ROC; Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei, Taiwan, ROC.
² Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei, Taiwan, ROC; International Graduate Program in Energy and Optoelectronic Materials, National Taipei University of Technology, Taipei, Taiwan, ROC.
³ Center for Biomedical Industry, National Taipei University of Technology, Taipei, Taiwan, ROC.
⁴ Graduate Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, Taiwan, ROC; Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei, Taiwan, ROC; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei, Taiwan, ROC. Electronic address: f10914@mail.ntut.edu.tw.
⁵ Graduate Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, Taiwan, ROC; Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei, Taiwan, ROC; Center for Biomedical Industry, National Taipei University of Technology, Taipei, Taiwan, ROC. Electronic address: kyhwa@mail.ntut.edu.tw.

PMID: 35452642
DOI: 10.1016/j.chemosphere.2022.134458

Abstract

Spinel structured aluminates TAl₂O₄ (T = Mg, Zn, and Cu) were synthesized by a facile hydrothermal method. The resultant enhancement in the electrochemical behavior was achieved due to the covalent synergism among the elements coexisting together. Structural and morphological characterizations were performed by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, and field emission scanning electron microscopy. MgAl₂O₄, ZnAl₂O₄ and CuAl₂O₄ has displayed same space group Fd3m of Laue class lattice type of the cubic structure as they were synthesized at same temperature (600 °C). CuAl₂O₄ spinel structure displayed a nanoneedle like structure along with the small sized cylindrical particles alongside to which CuAl₂O₄ spinel is combined with activated carbon (CuAl/C) and was applied to develop a facile sensor for the electrochemical detection of Acetaminophen (ACAP) using cyclic voltammetry (CV) and differential pulse voltammetry (DPV), which exhibited maximum conductivity, and a substantial electroactive surface area. Finally, the defect-rich composite, CuAl/C, showed excellent sensor performance towards DPV with 21.5 nM limit of detection (LOD) in a wide linear working range of 0.199 μM-165.88 μM ACAP concentration, with a high sensitivity of 19.1221 μA μM^-1cm². Additionally, the sensor showed excellent recovery results in real-time analysis for environmental aquatic samples like industrial wastewater and Tuna Fish.

Keywords: Acetaminophen; Electrochemical sensor; Hydrothermal synthesis; Real time analysis; Spinel aluminates.

MeSH terms

Aluminum Oxide*
Animals
Electrochemical Techniques* / methods
Electrodes
Magnesium Oxide
Zinc

Substances

spinell
Magnesium Oxide
Zinc
Aluminum Oxide