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2000
Volume 15, Issue 4
  • ISSN: 2210-6812
  • E-ISSN: 2210-6820

Abstract

Introduction

Para-nitrophenol (p-NP) is a toxic pollutant frequently released from industrial processes, posing risks to both environmental and human health. This study aimed to develop a highly sensitive electrochemical sensor using a TiCTx MXene-based ternary nanocomposite.

Methods

A ternary nanocomposite comprising TiCTx, single-walled carbon nanotubes (SWCNTs), and silver (Ag) nanoparticles was synthesized through ultrasonic dispersion and chemical reduction under alkaline conditions. The resulting material was characterized using UV–Vis spectroscopy, FTIR spectroscopy, XRD, SEM, and electrochemical impedance spectroscopy (EIS). The composite was drop-cast onto a glassy carbon electrode (GCE) and evaluated using cyclic voltammetry (CV).

Results

Multiple characterizations confirmed the formation of the nanocomposite. The TiCTx/SWCNT/Ag/GCE exhibited excellent performance for p-nitrophenol (p-NP) detection at a low reduction potential of –0.47 V. This sensor exhibited a linear detection range of 5–30 µM and 50–500 µM, with a detection limit of 0.32 µM. The TiCTx/SWCNT/Ag/GCE showed good repeatability and stability over multiple cycles.

Discussion

The enhanced electrocatalytic performance was attributed to the high conductivity of MXene, the fast electron transfer properties of SWCNTs, and the catalytic activity of Ag nanoparticles. This synergy enabled sensitive p-NP detection at a lower potential.

Conclusion

The TiCTx/SWCNT/Ag-modified GCE presents a promising platform for the sensitive detection of environmental pollutants, such as p-NP. This study provides insights into the design of multifunctional nanocomposites for advanced electrochemical sensor applications.

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/content/journals/nanoasi/10.2174/0122106812381051250704051713
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Synthesis and Characterisation of an MXene/SWCNTs/Ag Nanocomposite for the Electrochemical Detection of p-Nitrophenol
Nanoscience & Nanotechnology-Asia 15, E22106812381051 (2025); https://doi.org/10.2174/0122106812381051250704051713
/content/journals/nanoasi/10.2174/0122106812381051250704051713
/content/journals/nanoasi/10.2174/0122106812381051250704051713
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  • Article Type:     Research Article
Keyword(s): electrochemical impedance spectroscopy; electrochemical sensor; glassy carbon electrode; MXene; p-nitrophenol; silver nanoparticles; SWCNTs

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