Creation of a 2-Nitrophenol Sensor by Using ZrO2-Encapsulated Barium Oxide in the Presence of 4-Nitrophenol

IF 2.8 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2025-03-04 DOI:10.1007/s12678-025-00943-9

Sudhan Narayanan, Pitchaimuthu Sakthivel, Balasubramanian Venkataraman

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Abstract

By employing ZrO₂ coupled barium oxide nanoparticles modified glassy carbon electrode (ZrO₂ coupled BaO/GCE), we create a novel platform to sense the environmental contaminant 2-nitrophenol. Using XRD, FTIR, and SEM, the phase formation of BaO and ZrO₂ coupled BaO nanomaterials was examined. In comparison to bare GCE, both ZrO₂ coupled BaO-modified GCE and pure BaO-modified GCE demonstrate strong electrocatalytic activity towards 2-nitrophenol. The ZrO₂ coupled BaO-modified sensing platform has good sensitivity for 2-nitrophenol measurement across a broad linear range of 0.2 to 60 µM, with a 0.09 µM detection limit at the lowest. Moreover, it exhibits strong selectivity towards significant interfering substances including 4-nitrophenol, 4-aminophenol, catechol, hydroquinone, etc. Good agreement is observed between the analytical application of the suggested sensor and actual real water sample analysis.

Graphical Abstract

Abstract Image

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在4-硝基苯酚存在下用zro2包封氧化钡制备2-硝基苯酚传感器

采用ZrO2偶联氧化钡纳米粒子修饰的玻碳电极（ZrO2偶联BaO/GCE），建立了一种新型的环境污染物2-硝基苯酚检测平台。采用XRD、FTIR、SEM等手段对BaO和ZrO2偶联BaO纳米材料的相形成进行了研究。与裸GCE相比，ZrO2偶联bao修饰GCE和纯bao修饰GCE对2-硝基苯酚均表现出较强的电催化活性。ZrO2耦合bao修饰的传感平台在0.2 ~ 60µM的宽线性范围内具有良好的2-硝基苯酚测量灵敏度，最低检测限为0.09µM。对4-硝基酚、4-氨基酚、儿茶酚、对苯二酚等重要干扰物质具有较强的选择性。该传感器的分析应用与实际水样分析结果吻合较好。图形抽象

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

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