Vanadium selenide decorated reduced graphene oxide nanocomposite: A co-active catalyst for the detection of 2,4,6 - Trichlorophenol

Kuo-Yuan Hwa; Anindita Ganguly; Aravindan Santhan; Tata Sanjay Kanna Sharma

doi:10.1016/j.chemosphere.2021.130874

Vanadium selenide decorated reduced graphene oxide nanocomposite: A co-active catalyst for the detection of 2,4,6 - Trichlorophenol

Chemosphere. 2021 Nov:282:130874. doi: 10.1016/j.chemosphere.2021.130874. Epub 2021 May 15.

Authors

Kuo-Yuan Hwa¹, Anindita Ganguly², Aravindan Santhan², Tata Sanjay Kanna Sharma³

Affiliations

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

PMID: 34087558
DOI: 10.1016/j.chemosphere.2021.130874

Abstract

Transition metal chalcogenides (TMCs) have great potential in diverse electrochemical technologies owing to their unique characteristics. In the present work, we portray the design and synthesis of Vanadium selenide (V₂Se₉)/reduced graphene oxide (rGO) forming a two-dimensional (2D) hybrid nanocomposite via a simple hydrothermal method. The successfully synthesized nanocomposite underwent in-depth surface and morphological characterizations by XRD, Raman spectroscopy, XPS, TEM, STEM and its potential as an electro catalyst was investigated by using glassy carbon electrode (GCE) for the detection of 2,4,6-trichlorophenol (TCP). The structural features favored a high charge transfer ratio, high surface area as well as excellent conductivity and catalytic activity. The V₂Se₉/rGO/GCE modified electrode showed a low charge transfer resistance (R_ct) of 54.057 Ω cm², a decent detection limit (LOD) of 35.07 nM and a very high sensitivity of 22 μA μM^-1 cm^-2 in a working range of 0.001 μM-1150 μM. This is due to the active proton interaction, surface enhancement, and positive synergistic effect between rGO and V₂Se₉. The proposed sensor has good detection potential in agricultural soil, river water, fish, and beverage samples like wine and apple juice. The obtained results from our investigation would elucidate the application of the catalyst in electrochemical sensors.

Keywords: 2,4,6-Trichlorophenol; Hydrothermal synthesis; Reduced graphene oxide; Transition metal chalcogenides.

MeSH terms

Animals
Electrodes
Graphite*
Nanocomposites*
Vanadium

Substances

graphene oxide
Vanadium
Graphite