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<p>Simple and inexpensive electrochemical sensing material molybdenum and tin oxide composite material (MoO<sub>3</sub>@SnO<sub>2</sub>) for nitrite has been synthesized by the combustion method. The MoO<sub>3</sub>@SnO<sub>2</sub> have been synthesized through the combustion method using easily available and sustainable fuel materials like glucose and urea. The synthesized materials have been characterized by P-XRD, BET, FE-SEM and TEM techniques. The MoO<sub>3</sub>@SnO<sub>2</sub> exhibited surface of about 1.5255 m<sup>2</sup>g<sup>− 1</sup>. The electrocatalytic oxidation studies of nitrite with synthesized MoO<sub>3</sub>@SnO<sub>2</sub> have been explored with cyclic voltammetry (CV), differential pulse voltammetry (DPV), and Linear Sweep voltammetry (LSV) techniques. The MoO<sub>3</sub>@SnO<sub>2</sub> modified glassy carbon electrode (GCE) exhibited good electrocatalytic oxidation properties towards nitrite with a good linear range from 1.0 to 140 µM and a limit of detection (LOD) of 0.0986 µM trough LSV technique. The proposed sensor material exhibited good stability and reproducibility towards nitrite detection. Furthermore, the practical utility of the developed sensor has been explored by monitoring nitrite levels in various water and soil samples. The results obtained with the proposed sensor have been validated by comparing with the standard method. The recovery studies for spiked water and soil samples are also satisfactory and found to be more than 99%.</p>

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Green synthesized MoO3@SnO2 materials based sensitive electrochemical interface for nitrite sensing

  • 期刊论文

  • 发表日期：

    2026年4月21日

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  • Prakash HR,
  • Ramakrishnappa T,
  • Sureshkumar K,
  • Manjunatha Kumara K S,
  • Nagaraju Kottam,
  • Lavanya R,
  • Nanjundappa VS

摘要

Simple and inexpensive electrochemical sensing material molybdenum and tin oxide composite material (MoO3@SnO2) for nitrite has been synthesized by the combustion method. The MoO3@SnO2 have been synthesized through the combustion method using easily available and sustainable fuel materials like glucose and urea. The synthesized materials have been characterized by P-XRD, BET, FE-SEM and TEM techniques. The MoO3@SnO2 exhibited surface of about 1.5255 m2g− 1. The electrocatalytic oxidation studies of nitrite with synthesized MoO3@SnO2 have been explored with cyclic voltammetry (CV), differential pulse voltammetry (DPV), and Linear Sweep voltammetry (LSV) techniques. The MoO3@SnO2 modified glassy carbon electrode (GCE) exhibited good electrocatalytic oxidation properties towards nitrite with a good linear range from 1.0 to 140 µM and a limit of detection (LOD) of 0.0986 µM trough LSV technique. The proposed sensor material exhibited good stability and reproducibility towards nitrite detection. Furthermore, the practical utility of the developed sensor has been explored by monitoring nitrite levels in various water and soil samples. The results obtained with the proposed sensor have been validated by comparing with the standard method. The recovery studies for spiked water and soil samples are also satisfactory and found to be more than 99%.