Electroanalysis最新文献_第10页

Electrochemical insights into layered assemblies of silver nanoparticles, poly-L-lysine, and bovine serum albumin 银纳米粒子、聚-L-赖氨酸和牛血清白蛋白层状组装的电化学见解

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-03-25 DOI: 10.1002/elan.202400031

Patrick Marcel Seumo Tchekwagep, Rokas Žalnėravičius, Charles Péguy Nanseu-Njiki, Emmanuel Ngameni, Thomas Arnebrant, Tautgirdas Ruzgas

{"title":"Electrochemical insights into layered assemblies of silver nanoparticles, poly-L-lysine, and bovine serum albumin","authors":"Patrick Marcel Seumo Tchekwagep, Rokas Žalnėravičius, Charles Péguy Nanseu-Njiki, Emmanuel Ngameni, Thomas Arnebrant, Tautgirdas Ruzgas","doi":"10.1002/elan.202400031","DOIUrl":"10.1002/elan.202400031","url":null,"abstract":"This study presents a comprehensive exploration of the electrochemical behavior of layer-by-layer assemblies comprising silver nanoparticles (AgNPs), poly-l-lysine (PLL), and bovine serum albumin (BSA) on gold surfaces. AgNPs were synthesized using the reduction of silver ions with the synergy of ascorbic acid and citrate in the presence of sodium chloride. The obtained silver nanoparticles were characterized using transmission electron microscopy, dynamic light scattering and UV-Vis spectroscopy. A typical preparation produced AgNPs with a plasmon peak at 402 nm, a diameter of 27.5 nm and zeta potential of −37 mV. Employing a drop-coating approach, we successfully achieved stable multilayers of AgNPs, PLL, and BSA. Cyclic voltammetry revealed well-defined, bell-shaped oxidation and reduction peaks of AgNPs within the multilayers, demonstrating complete conversion to AgCl and back to Ag. Notably, the stripping of AgNPs on a monolayer of PLL prepared at pH 4.00 resulted in the highest current intensity, contrasting with lower intensities observed for PLL monolayers prepared at pH 7.01 and pH 9.01. Despite the absence of a splitting reduction peak in the presence of biopolymer materials, a noteworthy observation emerged: the peak splitting exclusively occurred when PLL/AgNP layers, terminated with PLL, were exposed to BSA in the solution.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 10","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solid-contact ion-selective sensor for the direct determination of procyclidine HCl and application of in-line dissolution profiling of its tablets 用于直接测定盐酸普罗环利啶及其片剂在线溶出度分析应用的固体接触式离子选择传感器

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-03-17 DOI: 10.1002/elan.202300363

Radwa Ahmed Gaber, Nagiba Y. Hassan, Nesrin K. Ramadan, Mona T. Ragab

{"title":"Solid-contact ion-selective sensor for the direct determination of procyclidine HCl and application of in-line dissolution profiling of its tablets","authors":"Radwa Ahmed Gaber, Nagiba Y. Hassan, Nesrin K. Ramadan, Mona T. Ragab","doi":"10.1002/elan.202300363","DOIUrl":"10.1002/elan.202300363","url":null,"abstract":"The ability to obtain accurate analytical results without sample pre-treatment or derivatization is a key element for an eco-friendly method of analysis. In this work, green electro analytical method was developed and evaluated for the selective determination of the anti-cholinergic drug Procyclidine Hydrochloride in both pure and dosage forms as well as in dissolution medium without sample pre-treatment. Firstly, screening of four ionophore-doped polyvinyl chloride-based membranes were conducted to detect the one with highest affinity towards the studied drug. Accordingly, calix[4]arene-doped membrane exhibited the optimum results. Then optimization was carried out by designing screen-printed and glassy carbon solid-contact ion-selective electrodes with multiwall carbon nanotube and graphene nanocomposite as ion to electron transducers. The fabricated screen-printed sensor with graphene nanocomposite was characterized according to IUPAC recommendations. It acquired the fastest and most stable response, along with thermal stability up to 30 °C. It also displayed a slope of 43.9±0.2 mV/decade in a pH range of 2–5. The proposed sensor successfully obtained a linear range of 1×10−5–1×10−2 M and the theoretical limit of detection was 6.3×10−6 M. Finally, it was used in applications such as in-line dissolution monitoring and quantification of procyclidine in its dosage form without prior sample pre-treatment or derivatization steps. Furthermore, the graphene nanocomposite transducer has been imaged by Scanning Electron Microscope (SEM).","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 8","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140168354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the potential of ternary nanocomposite in biosensor development 探索三元纳米复合材料在生物传感器开发中的潜力

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-03-17 DOI: 10.1002/elan.202300353

Azeez Olayiwola Idris

{"title":"Exploring the potential of ternary nanocomposite in biosensor development","authors":"Azeez Olayiwola Idris","doi":"10.1002/elan.202300353","DOIUrl":"10.1002/elan.202300353","url":null,"abstract":"Ternary nanocomposites, composed of three distinct materials, have recently attracted significant attention as promising materials to enhance biosensor development. This review discusses the synthesis, attributes, and applications of ternary nanocomposites for the construction of biosensors. It provides an overview of biosensors and their pivotal role in real-time detection. Furthermore, it explores the distinctive advantages of ternary nanocomposites, elucidating the synergistic effects of the amalgamation of various materials. Detailed discussions on the synthesis methodologies of ternary nanocomposites, encompassing both bottom-up and top-down approaches, offer valuable insights for researchers. The review emphasizes the advancements in ternary nanocomposite-based biosensors for detecting biomolecules, viruses, and environmental contaminants, underlining their potential to address significant environmental challenges. The review critically examines the hurdles and prospects of ternary nanocomposites in biosensors, with particular attention to scalability, cost-efficiency, and biofunctionalization techniques. Ultimately, it highlights the vast potential of ternary nanocomposites in biosensor development and their capacity to facilitate sensitive, selective, and rapid detection. The review stresses the remarkable potential of ternary nanomaterials in biosensing applications, highlighting their considerable advantages, challenges, and future prospects.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.202300353","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140168179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metal-organic frameworks-assisted electrochemical sensing toward magnesium in medicinal and edible homologous for pharmacological evaluation. 金属有机框架辅助电化学感应药用和食用同系物中的镁，以进行药理评估

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-03-12 DOI: 10.1002/elan.202400022

Cuihong Dai, Xu Li, Yunqi Cui, Zhibin Yang, Hongda Zhang

{"title":"Metal-organic frameworks-assisted electrochemical sensing toward magnesium in medicinal and edible homologous for pharmacological evaluation.","authors":"Cuihong Dai, Xu Li, Yunqi Cui, Zhibin Yang, Hongda Zhang","doi":"10.1002/elan.202400022","DOIUrl":"10.1002/elan.202400022","url":null,"abstract":"Given the importance of Magnesium (Mg) assay for efficacy evaluation of medicinal and edible homologous (MEH), an electrochemical sensor is designed by exploiting the cooperative properties of metal–organic frameworks (MOFs) and gold nanoparticles (AuNPs). To be specific, the constructed bimetallic MOFs ((FeZr)MOF) are designed by using Zr(IV) and Fe(III) clusters as metal sources, which provide a large platform for AuNPs attachment to design signal probes. Benefitting from the catalytic properties of (FeZr)MOF toward hydroxylamine, electrochemical signal is attained for Mg2+ analysis with the detection limit to be 3 μM (corresponding to 0.072 μg g−1). Relying on DNAzymes as recognition elements, good anti-jamming is achieved for Mg2+ analysis against the coexisting ions in Puerarin, Chinese wolfberry, hawthorn and dangshen. With the superiority of rapid response, acceptable sensitivity and specificity, the electrochemical sensor provides a useful pattern for assessing the pharmacological effects of MEH substances, pointing to reasonable selection and combination of multiple health function dietary therapy formulas.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 8","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140129541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cover Picture: (Electroanalysis 3/2024) 封面图片：（Electroanalysis 3/2024）

IF 3 3区化学

Electroanalysis Pub Date : 2024-03-11 DOI: 10.1002/elan.202480301

引用次数: 0

Cover Picture: (Electroanalysis 3/2024) 封面图片：（Electroanalysis 3/2024）

IF 3 3区化学

Electroanalysis Pub Date : 2024-03-11 DOI: 10.1002/elan.202480301

引用次数: 0

An affordable and green voltammetric approach for the determination of sotalol in biological, environmental, and pharmaceutical samples 测定生物、环境和药物样品中索他洛尔含量的经济、绿色伏安法

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-03-10 DOI: 10.1002/elan.202300419

Gustavo Fix, Bruna Coldibeli, Elen Romão Sartori

{"title":"An affordable and green voltammetric approach for the determination of sotalol in biological, environmental, and pharmaceutical samples","authors":"Gustavo Fix, Bruna Coldibeli, Elen Romão Sartori","doi":"10.1002/elan.202300419","DOIUrl":"10.1002/elan.202300419","url":null,"abstract":"This work outlines the development of a voltammetric method for a sensitive, rapid, and environmentally friendly determination of the antihypertensive sotalol (SOT) in several sample types employing the anodically pretreated boron-doped diamond electrode. Cyclic voltammograms of SOT presented a well-defined irreversible oxidation peak at 1.21 V (Ag/AgCl (3.0 mol L−1 KCl)) in Britton–Robinson buffer solution (pH 3.0). Figures of merits recommended by the validation guidelines were evaluated for the validation of the present method. Employing differential pulse voltammetry linearity of SOT was obtained in the concentration range of 0.39–4.22 μmol L−1 in 0.1 mol L−1 H2SO4 solution, with a limit of detection of 0.031 μmol L−1. The selectivity of the method was assessed against interferers and show relative standard deviation (RSD) values lower than 6 %. Recovery tests yielded percentages ranging from 93 % to 96 % in urine sample and from 100 % to 107 % in tap water sample. The proposed method was successfully applied in pharmaceutical, environmental, and biological samples offering a suitable green analytical chemistry profile.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 8","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140108084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon screen-printed electrodes modified with SiO2-CuO-glucose oxidase film for toxicity assessment using bacteria as indicator systems 用 SiO 2 -CuO-GLUCOSE 氧化酶薄膜改性的碳丝网印刷电极，用于以细菌为指示系统的毒性评估

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-03-08 DOI: 10.1002/elan.202300404

Marko Kuznetsov, Oksana Tananaiko, Michael Gelinsky, Max von Witzleben, David Kilian, Anastasia Lunyo, Vita Saska, Katerina Dzhihirei, Vladyslav Lisnyak, Liudmyla Grischenko, Serhiy Kondratenko, Liudmyla Rieznichenko, Tamara Gruzina, Svitlana Dybkova

{"title":"Carbon screen-printed electrodes modified with SiO2-CuO-glucose oxidase film for toxicity assessment using bacteria as indicator systems","authors":"Marko Kuznetsov, Oksana Tananaiko, Michael Gelinsky, Max von Witzleben, David Kilian, Anastasia Lunyo, Vita Saska, Katerina Dzhihirei, Vladyslav Lisnyak, Liudmyla Grischenko, Serhiy Kondratenko, Liudmyla Rieznichenko, Tamara Gruzina, Svitlana Dybkova","doi":"10.1002/elan.202300404","DOIUrl":"10.1002/elan.202300404","url":null,"abstract":"A portable voltammetric sensor for toxicity assessment was developed based on a screen-printed carbon electrode modified with SiO2-CuO-glucose oxidase (GOx) film. The method is based on the detection of the metabolic activity of E. coli towards glucose as an indicator systems in the presence of antiseptic drugs as model toxic compounds. CuO particles exhibited catalytic activity toward hydrogen peroxide produced by the GOx-induced oxidation of glucose. A well-defined reduction peak was registered at E=−0.50 V (vs. Ag/AgCl). The metabolism of glucose by E. coli resulted in a decrease in analytical signal of glucose with the increasing bacteria content in the range of 0.8×109–5.0×109 CFU mL−1 with a calculated limit of detection (LOD) of 0.59×109 CFU mL−1. To evaluate the effect of antiseptics the biosensor was tested in E. coli solution with chlorhexidine (CHD) or decamethoxine (DMT). A linear dependence of glucose consumption by E. coli solution on the antiseptic concentration was obtained in the range of 3.0–12.0 μg mL−1 for CHG and 1.0–12.0 μg mL−1 for DMT, respectively. The developed third generation biosensor showed satisfactory stability and reproducibility of the analytical response. A modified electrode can be used for at least two months.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 8","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140076278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rational approach for expanding functionality of wurtzite rectangle nano-sheets based photoanode for improved photoelectrochemical water-splitting performance 扩展基于矩形矩形纳米片的光阳极功能以提高光电化学分水性能的合理方法

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-03-06 DOI: 10.1002/elan.202400025

Humaira Rashid Khan, Asadullah Dawood, Javed Akhtar, Azmat Ali Khan, Muhammad Aziz Choudhary, Muhammad Asad Khan

{"title":"Rational approach for expanding functionality of wurtzite rectangle nano-sheets based photoanode for improved photoelectrochemical water-splitting performance","authors":"Humaira Rashid Khan, Asadullah Dawood, Javed Akhtar, Azmat Ali Khan, Muhammad Aziz Choudhary, Muhammad Asad Khan","doi":"10.1002/elan.202400025","DOIUrl":"10.1002/elan.202400025","url":null,"abstract":"Photoanodes possessing multifunctionality for efficient clean fuel generation have garnered significant attention. In this study, we present successful fabrication of tungsten-doped ZnO photoelectrodes, resulting in enhanced photoelectrochemical water-splitting performance. A single-step deposition process was employed to achieve thin films with excellent adhesion on FTO substrates, eliminating the need for post-annealing treatments. The addition of tungsten into the ZnO matrix extended the optical absorbance range of the thin films to the visible spectrum, leading to improved photoelectrochemical performance under visible light irradiation. At an applied potential of 0.85 V vs. RHE, the as-fabricated tungsten-doped ZnO thin films exhibited a remarkable photocurrent density of 5218 μA/cm2, which was eight times higher than that of the undoped ZnO electrode. The incorporation of tungsten in the ZnO photoanode resulted in increased charge carrier density and enhanced visible light absorption, consequently elevating the photocurrent density.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 7","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140071980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface characterization of barium(II)-selective potentiometric sensor based on a newly synthesized thiosemicarbazone derivative molecule 基于新合成的腙衍生物分子的钡(II)选择性电位传感器的表面表征

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-03-03 DOI: 10.1002/elan.202300407

Onur Cem Altunoluk, Oguz Özbek, Erbay Kalay, Feyzi Sinan Tokalı, Osman Nuri Aslan

引用次数: 0