Examination of Carbon Paste Electrode/TiO2 Nanocomposite as Electrochemical Sensor for Detecting Profenofos Pesticide

IF 1.1 Q4 ELECTROCHEMISTRY Surface Engineering and Applied Electrochemistry Pub Date : 2021-07-17 DOI:10.3103/S1068375521030029

Thamrin Azis, Maulidiyah Maulidiyah, Muh. Zakir Muzakkar, Ratna Ratna, Siti Wahyuni Aziza, Catherina M. Bijang, La Ode Agus Salim, Owink Agung Prabowo, Dwiprayogo Wibowo, Muhammad Nurdin

{"title":"Examination of Carbon Paste Electrode/TiO2 Nanocomposite as Electrochemical Sensor for Detecting Profenofos Pesticide","authors":"Thamrin Azis, Maulidiyah Maulidiyah, Muh. Zakir Muzakkar, Ratna Ratna, Siti Wahyuni Aziza, Catherina M. Bijang, La Ode Agus Salim, Owink Agung Prabowo, Dwiprayogo Wibowo, Muhammad Nurdin","doi":"10.3103/S1068375521030029","DOIUrl":null,"url":null,"abstract":"This study reports the preparation and performance of a smart material—a carbon paste electrode combined with TiO2 semiconductor (CPE/TiO2) as electrochemical sensor for detecting profenofos—a toxic organophosphates group insecticide widely used in agriculture. Such techniques as real samples tests and electrochemical tests were used to investigate the following parameters: a scan rate, an electrode response, a limit of detection (LoD), and repeatability. Based on the obtained results, the best mass composition of TiO2 combined with CPE was found to be in a ratio of 1 : 1 : 5, with an anodic peak current (Ipa) of 150 μA, an anodic peak potential (Epa) of 0.87 V, and an optimal scan rate measurement of 0.5 V s–1. The LoD based on a linearity curve with a value of 4.0 × 10–5 μM was also observed, and a repeatability test against the working electrode was performed until the 30th day, using the Horwitz ratio of 0.16. A good electrochemical performance of the working electrode tested against a real sample showed the specifically detected profenofos with Ipa value of 7.0 × 10–5 μM.","PeriodicalId":49315,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"57 3","pages":"387 - 396"},"PeriodicalIF":1.1000,"publicationDate":"2021-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface Engineering and Applied Electrochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1068375521030029","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}

引用次数: 2

Abstract

This study reports the preparation and performance of a smart material—a carbon paste electrode combined with TiO₂ semiconductor (CPE/TiO₂) as electrochemical sensor for detecting profenofos—a toxic organophosphates group insecticide widely used in agriculture. Such techniques as real samples tests and electrochemical tests were used to investigate the following parameters: a scan rate, an electrode response, a limit of detection (LoD), and repeatability. Based on the obtained results, the best mass composition of TiO₂ combined with CPE was found to be in a ratio of 1 : 1 : 5, with an anodic peak current (I_pa) of 150 μA, an anodic peak potential (E_pa) of 0.87 V, and an optimal scan rate measurement of 0.5 V s^–1. The LoD based on a linearity curve with a value of 4.0 × 10^–5 μM was also observed, and a repeatability test against the working electrode was performed until the 30th day, using the Horwitz ratio of 0.16. A good electrochemical performance of the working electrode tested against a real sample showed the specifically detected profenofos with I_pa value of 7.0 × 10^–5 μM.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

碳糊电极/TiO2纳米复合材料检测农药丙烯威的电化学传感器研究

本研究报道了一种智能材料-碳糊电极结合TiO2半导体(CPE/TiO2)作为电化学传感器用于检测农业中广泛使用的有毒有机磷类杀虫剂丙烯磷的制备和性能。使用实际样品测试和电化学测试等技术来研究以下参数:扫描速率、电极响应、检测限(LoD)和可重复性。结果表明，TiO2与CPE复合的最佳质量配比为1:1:5，阳极峰电流(Ipa)为150 μA，阳极峰电位(Epa)为0.87 V，最佳扫描速率测量值为0.5 V s-1。在4.0 × 10-5 μM的线性曲线上测得LoD，并在工作电极上进行重复性测试至第30天，Horwitz比值为0.16。对实际样品的电化学性能测试表明，该工作电极能特异性检测到的异丙酚的Ipa值为7.0 × 10-5 μM。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Surface Engineering and Applied Electrochemistry Engineering-Industrial and Manufacturing Engineering

CiteScore

1.70

自引率

22.20%

发文量

审稿时长

6 months

期刊介绍： Surface Engineering and Applied Electrochemistry is a journal that publishes original and review articles on theory and applications of electroerosion and electrochemical methods for the treatment of materials; physical and chemical methods for the preparation of macro-, micro-, and nanomaterials and their properties; electrical processes in engineering, chemistry, and methods for the processing of biological products and food; and application electromagnetic fields in biological systems.