检出限
复合数
材料科学
炭黑
电化学
电催化剂
介孔材料
电化学气体传感器
碳纤维
介电谱
碳糊电极
化学工程
核化学
循环伏安法
复合材料
化学
色谱法
电极
有机化学
物理化学
催化作用
工程类
天然橡胶
作者
Thangavelu Sakthi Priya,Tse-Wei Chen,Shen–Ming Chen,Thangavelu Kokulnathan,Bih-Show Lou,Tahani Saad Algarni,Wedad A. Al-onazi,Mohamed S. Elshikh
出处
期刊:Carbon
[Elsevier BV]
日期:2024-03-09
卷期号:223: 119026-119026
被引量:29
标识
DOI:10.1016/j.carbon.2024.119026
摘要
The release of industrial effluents contributes to environmental degradation, posing a significant challenge to sustainable development. Metol (MTL) is a popular color-developing agent which is extensively used in the hair dyes and photographic industries. The massive usage and improper disposal of MTL into water resources would adversely affect the ecosystem. Therefore, we have prepared a MOF-derived zerovalent iron in mesoporous carbon (Fe@C) with a carbon black (CB) electrocatalyst for the detection of MTL. The structural and elemental details were examined with several spectroscopic techniques. Our prepared electrocatalyst was used to modify the screen-printed carbon electrode (SPCE). The electrochemical property of the fabricated sensor was investigated with impedance and voltammetric measurements. The catalytic activity of Fe@C/CB/SPCE towards MTL was scrutinized with different voltammetric techniques. Consequently, our Fe@C/CB/SPCE demonstrated a low detection limit (0.003 μM), high sensitivity (12.948 μA μM −1 cm −2 ), two linear ranges (at lower concentrations (0.01–27 μM), and higher concentrations (27–142 μM)), good selectivity , and appreciable stability results. The practical utility of the reported sensor was determined by monitoring MTL in various real-world water samples (tap, pond, and river). Based on the outcomes of the experiment, it would be suggested that our Fe@C/CB is a propitious catalyst for the electrochemical detection of MTL. • A noble zerovalent Fe@C was prepared from MOF by a simple hydrothermal and pyrolysis technique. • Fe@C/CB was prepared by ultrasonication and applied to modify the SPCE to detect the MTL. • Our sensor has shown low LOD (0.003 μM), good sensitivity values (12.948 μA μM −1 cm −2 ), and high stability result. • Fe@C/CB/SPCE sensor was employed to monitor the MTL in various water samples and resulted in good recovery values.
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