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Ruthenium oxide nanoparticles immobilized over Citrus limetta waste derived carbon material for electrochemical detection of hexestrol.
Journal of Materials Chemistry B ( IF 6.1 ) Pub Date : 2020-07-15 , DOI: 10.1039/d0tb00263a
Karan Chaudhary 1 , Navin Kumar Mogha , Shubra Lalwani , Raj Kishore Sharma , Dhanraj T Masram
Affiliation  

Hexestrol is a non-steroidal estrogen which causes carcinogenic effects in animals. It is therefore important to develop sensitive and selective test methods for its early detection. Herein, we report the development of an electrochemical sensor to detect hexestrol in ultralow concentrations. In order to devise a simple and cost-effective hexestrol sensing electrode, attention is paid to the development of biomass-derived porous carbon (PCB) with large surface area and suitable porosity to immobilize ruthenium oxide nanoparticles (RuO2 NPs, 3–4 nm). The leftover Citrus limetta pulp is chosen as waste biomass since it has N and O based chemical species. Structural, morphological and compositional analysis of PCB and RuO2@PCB revealed well-dispersed RuO2 NPs over the PCB surface. High loading (5.27 at%) of Ru content is achieved due to the large surface area of PCB. Cyclic voltammetry, chronoamperometry and differential pulse voltammetry results suggest that the RuO2@PCB/ITO electrode is capable of detecting hexestrol concentration (in the range of 1 × 10−7–2 × 10−5 M). The practical application of hexestrol detection in milk samples demonstrates the recovery from 96.28 to 101%.

中文翻译:

氧化钌纳米颗粒固定在柑桔废料衍生的碳材料上,用于己烯雌酚的电化学检测。

己烯雌酚是一种非甾体雌激素,可引起动物致癌作用。因此,重要的是开发灵敏且选择性的测试方法以对其进行早期检测。在这里,我们报告了一种电化学传感器的发展,以检测超低浓度的己烯雌酚。为了设计一种简单且具有成本效益的己烯雌酚感测电极,应注意开发具有大表面积和合适孔隙率的生物质衍生多孔碳(PCB),以固定氧化钌纳米颗粒(RuO 2 NP,3-4 nm )。剩下的柑桔纸浆具有N和O基化学物质,因此被选作废生物质。PCB和RuO 2 @PCB的结构,形态和成分分析表明,RuO分散均匀PCB表面上的2个NP。由于PCB的表面积大,因此可实现较高的Ru含量(5.27 at%)。循环伏安法,计时安培法和差分脉冲伏安法结果表明,RuO 2 @ PCB / ITO电极能够检测己烯雌酚浓度(范围为1×10 -7 –2×10 -5 M)。己烯雌酚检测在牛奶样品中的实际应用表明回收率从96.28%提高到101%。
更新日期:2020-09-16
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