Scholarlink

<p>Nanocomposites have gained significant attention in various fields like energy, sensors, and electronics due to their unique properties. These include easiness of synthesis, a wide electrochemical potential range, special physicochemical and structural properties, and cost-effectiveness. In the present work, we employed a facile method to fabricate a Ni-Co-GO composite electrode formed on stainless steel for the detection of hydrazine. Structural and morphological properties of the prepared Ni-Co-GO composite electrode were characterized by various studies such as FTIR-ATR, SEM, XPS, and EDX analysis. The electrochemical sensing of hydrazine on Ni-Co-GO composite electrode was examined by CV, LSV, and CA techniques. The modified electrode achieved a very high scan rate of 250&#xa0;mV/s with the least modification in the characteristic peaks and retained considerable current response after the 750th cycle of operation at 20&#xa0;mV/s. The mixed valance of nickel and cobalt ions is beneficial for fast electron transfer in the presence of graphene and enhances the current response. This electrochemical platform can realize good selectivity, excellent stability, reproducibility, and good detection limit. Low limits of detection (LOD) and quantification (LOQ) of 0.021&#xa0;μM and 0.07&#xa0;μM, respectively, were achieved for hydrazine using the Ni-Co-GO composite electrode. This study proves that through simple and inexpensive methods, we can fabricate various types of mixed metal oxide functionalized graphene electrodes for different applications.</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

Electrochemical performance of Ni-Co-GO nanocomposite electrode for selective detection of hydrazine

  • 期刊论文

  • 发表日期：

    2025年5月28日

查看全文
  • Aiswarya P.,
  • R. Manu

摘要

Nanocomposites have gained significant attention in various fields like energy, sensors, and electronics due to their unique properties. These include easiness of synthesis, a wide electrochemical potential range, special physicochemical and structural properties, and cost-effectiveness. In the present work, we employed a facile method to fabricate a Ni-Co-GO composite electrode formed on stainless steel for the detection of hydrazine. Structural and morphological properties of the prepared Ni-Co-GO composite electrode were characterized by various studies such as FTIR-ATR, SEM, XPS, and EDX analysis. The electrochemical sensing of hydrazine on Ni-Co-GO composite electrode was examined by CV, LSV, and CA techniques. The modified electrode achieved a very high scan rate of 250 mV/s with the least modification in the characteristic peaks and retained considerable current response after the 750th cycle of operation at 20 mV/s. The mixed valance of nickel and cobalt ions is beneficial for fast electron transfer in the presence of graphene and enhances the current response. This electrochemical platform can realize good selectivity, excellent stability, reproducibility, and good detection limit. Low limits of detection (LOD) and quantification (LOQ) of 0.021 μM and 0.07 μM, respectively, were achieved for hydrazine using the Ni-Co-GO composite electrode. This study proves that through simple and inexpensive methods, we can fabricate various types of mixed metal oxide functionalized graphene electrodes for different applications.