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Bimetallic Platinum-Nickel Nanoparticles Modified on the Screen-Printed Electrode for Highly Sensitive Urea Determination
Lu, Shun1; Wang, Qingmei2; Fang, Ling1; Zheng, Xingqun3; Yin, Fengjun1; Liu, Hong1
2024-02-15
摘要The accurate determination of urea in wastewater is crucial for environmental and health monitoring due to its potential to cause eutrophication. To address this, we proposed a simple and efficient method for synthesizing platinum-nickel alloyed nanoparticles (PtNi NPs) using a one-pot solvothermal approach using glucose as the reducing agent for urea determination. Experimental results demonstrated that PtNi NPs exhibit abundant active sites that facilitate urea electrooxidation (UEO). Taking advantage of this, we developed a novel enzymatic-free PtNi NPs modified screen-printed electrode for electrochemical urea sensing. Then, the electrochemical performance of the as-fabricated sensor is evaluated through cyclic voltammetry (CV) and linear sweep voltammetry (LSV) measurements. The sensor demonstrates a wider linear range of 0.1 mu M-10 mM and a low limit of detection (LOD) of 0.015 mu M (S/N = 3). The excellent performance allows for the sensor's application in diluted tap water with satisfactory outcomes. The improved electrocatalytic UEO performance of the PtNi NPs contributes to their high activity, selectivity, and robust stability. Furthermore, this study provides a versatile platform for determining other contaminants in wastewater treatment processes.
关键词Bimetallic nanoparticles (NPs) electrochemical sensing electron transfer urea oxidation reaction urea sensors
DOI10.1109/JSEN.2023.3345948
发表期刊IEEE SENSORS JOURNAL
ISSN1530-437X
卷号24期号:4页码:4221-4227
通讯作者Yin, Fengjun(yinfengjun@cigit.ac.cn) ; Liu, Hong(liuhong@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:001173599400012
语种英语