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  11. Development Of An Ultrasensitive Sensor For Detecting Metol In Environmental Water Samples Using Ruddlesden-popper Type Layered Perovskite (la2nio4) Combined With Graphene Oxide

Development of an ultrasensitive sensor for detecting metol in environmental water samples using ruddlesden-popper type layered perovskite (La2NiO4) combined with graphene oxide

Parthasarathi Manimaran1, Elayappan Tamilalagan1, Shen-Ming Chen1

  • 1Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.

Water Research
|December 25, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

A new La₂NiO₄@GO nanocomposite electrode offers ultrasensitive detection of Metol (MTO), an environmental pollutant. This sensor effectively monitors MTO in water and urine, aiding environmental protection efforts.

Area of Science:

  • Materials Science
  • Electrochemistry
  • Environmental Science

Background:

  • Metol (MTO) is a widely used photographic developer that has become an environmental pollutant.
  • MTO accumulation in water sources poses risks such as aquatic toxicity and bioaccumulation, impacting ecosystems.

Purpose of the Study:

  • To develop an ultrasensitive electrochemical sensor for detecting Metol (MTO).
  • To utilize a La₂NiO₄ combined with graphene oxide (La₂NiO₄@GO) nanocomposite modified glassy carbon electrode (GCE) for MTO detection.

Main Methods:

  • La₂NiO₄ synthesis via hydrothermal method and integration with graphene oxide via sonochemical technique.
  • Characterization using FT-IR, XPS, and HR-TEM.
  • Electrochemical detection using differential pulse voltammetry (DPV).
Keywords:
Electrochemical sensingLa(2)NiO(4)@GO nanocompositeOrganic pollutantP-methylamino phenol sulfate

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Main Results:

  • The La₂NiO₄@GO-modified electrode showed low charge transfer resistance (20 Ω).
  • Achieved a low limit of detection (LOD) of 6.4 nM for MTO.
  • Demonstrated high sensitivity (10.84 µA µM⁻¹cm⁻²) and excellent anti-interference properties.
  • Successfully applied to real environmental water and human urine samples with excellent recovery rates.

Conclusions:

  • The developed La₂NiO₄@GO-modified electrode is highly effective for ultrasensitive MTO detection.
  • This sensor shows significant potential for monitoring MTO in environmental and biological samples.
  • The findings contribute to mitigating the environmental impact of MTO and promoting a healthier environment.
Voltammetry