Preparation of novel nanostructured WO3/CuMnO2 p-n heterojunction nanocomposite for photoelectrochemical detection of nitrofurazone

Velmurugan S 1 , C-K Yang T 2 , Ching Juan J 3 , Chen JN 1

Affiliations 

  • 1 Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan, ROC
  • 2 Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan, ROC; Precision and Materials Research Centre, National Taipei University of Technology, Taipei, Taiwan, ROC. Electronic address: ckyang@mail.ntut.edu.tw
  • 3 Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur-50603, Malaysia
J Colloid Interface Sci, 2021 Aug 15;596:108-118.
PMID: 33838324 DOI: 10.1016/j.jcis.2021.03.083

Abstract

Herein this research, a visible light active tungsten oxide/copper manganate (WO3/CuMnO2) p-n heterojunction nanocomposite was prepared and has been applied for a signal on photoelectrochemical sensing of antibiotic nitrofurazone (NFZ). Firstly, the n-WO3 nanotiles were synthesized from the cetrimonium bromide (CTAB) assisted hydrothermal method and the p-CuMnO2 nanoparticles were synthesized by using the ultrasound-assisted hydrothermal method. The photoelectrochemical NFZ sensing performance of WO3/CuMnO2 nanocomposite was 1.9 times higher than that of as-synthesized pure WO3 nanotiles. The resulting higher photoelectrochemical performance of the nanocomposite is due to more visible light absorption ability and synergy from p-n heterojunction formation. The designed WO3/CuMnO2 nanocomposite sensor gives satisfactory photocurrent signals for the detection of NFZ in the range of 0.015-32 μM with the detection limit (LOD) of 1.19 nM. The practical applicability of the nanocomposite sensor was monitored in pork liver and tap water samples.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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