Scholarlink

<p>The persistent use of carbendazim (CBD) in agriculture, coupled with its environmental stability, necessitates the development of rapid and sensitive detection techniques to monitor its residues in food and water systems. In this work, a spinel NiCo<sub>2</sub>O<sub>4</sub> decorated over mechanochemically exfoliated G nanosheets nanocomposite (NiCo<sub>2</sub>O<sub>4</sub>/G) electrocatalyst was prepared using an in situ hydrothermal process. The mechanochemical exfoliation of graphene has been achieved by grinding oxalic acid (milling agent) and graphite in a ball mill, followed by thermal eradication of the milling agent. The designed NiCo<sub>2</sub>O<sub>4</sub>/G electrocatalyst modified carbon printed electrode (SPCE) deployed in square wave voltammetry (SWV) technique exhibited a broad range of CBD in pH 7 buffer (0.1&#xa0;M phosphate). The obtained linear range and detection limit (LOD) for CBD signaling at NiCo<sub>2</sub>O<sub>4</sub>/G/SPCE were 0.05–120&#xa0;µM and 16&#xa0;nM (S/N = 3), respectively. Especially, the sensor retained a CBD signal of 99.45% in the presence of interferences. Moreover, the limit of quantification (LOQ) and sensitivity of the sensor are estimated as 0.053&#xa0;µM and 0.184 µA/µM.cm<sup>2</sup>, respectively. At most, the designed CBD selective sensor has also been used to detect CBD in vegetables (soybean, lettuce, tomato) and environmental aqua regions (river, paddy, lake) at the retrieval of 97.0–99.0% and 97.4–99.2%, respectively.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

High-performance electrochemical detection of carbendazim using NiCo2O4 nanoflower/graphene nanocomposite for food and environmental safety

  • 期刊论文

  • 发表日期：

    2025年8月11日

查看全文
  • Sethupathi Velmurugan,
  • Sarawut Kondee,
  • Chatchawal Wongchoosuk

摘要

The persistent use of carbendazim (CBD) in agriculture, coupled with its environmental stability, necessitates the development of rapid and sensitive detection techniques to monitor its residues in food and water systems. In this work, a spinel NiCo2O4 decorated over mechanochemically exfoliated G nanosheets nanocomposite (NiCo2O4/G) electrocatalyst was prepared using an in situ hydrothermal process. The mechanochemical exfoliation of graphene has been achieved by grinding oxalic acid (milling agent) and graphite in a ball mill, followed by thermal eradication of the milling agent. The designed NiCo2O4/G electrocatalyst modified carbon printed electrode (SPCE) deployed in square wave voltammetry (SWV) technique exhibited a broad range of CBD in pH 7 buffer (0.1 M phosphate). The obtained linear range and detection limit (LOD) for CBD signaling at NiCo2O4/G/SPCE were 0.05–120 µM and 16 nM (S/N = 3), respectively. Especially, the sensor retained a CBD signal of 99.45% in the presence of interferences. Moreover, the limit of quantification (LOQ) and sensitivity of the sensor are estimated as 0.053 µM and 0.184 µA/µM.cm2, respectively. At most, the designed CBD selective sensor has also been used to detect CBD in vegetables (soybean, lettuce, tomato) and environmental aqua regions (river, paddy, lake) at the retrieval of 97.0–99.0% and 97.4–99.2%, respectively.

Graphical Abstract