In this article, the electrochemical monitoring of phenol (Ph) in water by using a nanostructured MnO2-modified screen-printed carbon electrode (MnO2-SPCE) is reported. MnO2 nanoparticles were synthesized by the redox-precipitation method. Morphological, textural, and microstructural characteristics were investigated by scanning electron microscopy (SEM), X-ray diffraction, Raman, Brunauer–Emmett–Teller (BET) surface area, and pore volume analyses. Electrochemical properties of the modified MnO2-SPCE electrode have been investigated by cyclic voltammetry and linear sweep voltammetry. The detection of Ph in water by the developed sensor was exploited using square wave voltammetry and chronoamperometry. The sensor showed good characteristics, such as simple fabrication, low cost, good sensitivity, stability, reproducibility, and selectivity, against inorganic analytes and other phenolic compounds. The reported results demonstrated the great potential of nanostructured MnO2 in developing high performances electrochemical sensors to be utilized in the field of environmental pollution monitoring.

中文翻译：

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用于苯酚监测的 MnO2 改性丝网印刷电极的开发。

在本文中，报道了使用纳米结构的 MnO2 修饰的丝网印刷碳电极 (MnO2-SPCE) 对水中苯酚 (Ph) 的电化学监测。MnO2纳米颗粒是通过氧化还原沉淀法合成的。通过扫描电子显微镜 (SEM)、X 射线衍射、拉曼、Brunauer-Emmett-Teller (BET) 表面积和孔体积分析研究了形态、质地和微观结构特征。通过循环伏安法和线性扫描伏安法研究了改性 MnO2-SPCE 电极的电化学性能。使用方波伏安法和计时电流法利用开发的传感器检测水中的 Ph。该传感器具有制造简单、成本低、灵敏度、稳定性、重现性和选择性好等优点，抗无机分析物和其他酚类化合物。报告的结果表明，纳米结构的 MnO2 在开发用于环境污染监测领域的高性能电化学传感器方面具有巨大潜力。