Electroanalysis最新文献_第7页

Electrochemical determination of wine polyphenols using carbon electrodes: A review 使用碳电极电化学测定葡萄酒多酚：综述

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-06-03 DOI: 10.1002/elan.202400084

Xhensiana Ndreka, Nensi Isak, Kledi Xhaxhiu, Jiri Kudr, Ondrej Zitka, Muhamed Farruku, Besnik Baraj

{"title":"Electrochemical determination of wine polyphenols using carbon electrodes: A review","authors":"Xhensiana Ndreka, Nensi Isak, Kledi Xhaxhiu, Jiri Kudr, Ondrej Zitka, Muhamed Farruku, Besnik Baraj","doi":"10.1002/elan.202400084","DOIUrl":"10.1002/elan.202400084","url":null,"abstract":"Wine′s phenolic compounds present a group of hundreds of chemical compounds, contributing to the wine taste, color, and stability during the ageing. These compounds include phenolic acids, flavonols, anthocyanins, catechins, proanthocyanidins etc. They are very important because they offer numerous good benefits for human body. Electrochemical methods show a valuable technique for the determination of redox compounds in wine. In this review, a lot of attention is paid to carbon-based electrodes and to the voltammetric signals obtained in red and white wines using different modifiers for the electrode surface with nanoparticles and natural compounds used in the construction of biosensors. These electrodes are widely used due to their non-toxic properties, wide potential ranges, high conductivity and the possibility of use in aqueous and non-aqueous solutions. Different carbon electrodes are considered and briefly discussed. This review explores the current advancements in the electrochemical determination of most important polyphenolic compounds in wine using carbon electrodes. Also, this review gives a clear view about the oxidation peaks of various phenolic compounds in wine. It encompasses -the in-depth analysis of the different types of carbon electrodes used, such as glassy carbon, carbon paste, carbon nanotubes, screen-printed,graphene-based electrodes, biosensors and their respective benefits in polyphenolic compounds analysis. In conclusion, the electrochemical determination of polyphenolic compounds in wine using carbon electrodes offers a promising route for accurate and reliable analysis, with important implications for the wine industry and research. This review provides comprehensive information for researchers, winemakers and analytical chemists seeking to understand and apply these techniques for improving wine quality and advancing knowledge.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 8","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141272135","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

Regulating ion transport in lithium metal batteries via metal-organic frameworks electrolyte modulator 通过金属有机框架电解质调制器调节金属锂电池中的离子传输

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-06-03 DOI: 10.1002/elan.202400167

Jiaxing Yan, Jiaqi Li, Wenqiang Fang, Yuanhang Gao, Zuosu Qin, Mingwei Sun, Peng Yuan, Gen Chen

引用次数: 0

Activation of additively manufactured electrodes using methanol and ethanol solutions 使用甲醇和乙醇溶液活化添加剂制造的电极

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-05-31 DOI: 10.1002/elan.202400075

Rhys J. Williams, Robert D. Crapnell, Tom Brine, Craig E. Banks

{"title":"Activation of additively manufactured electrodes using methanol and ethanol solutions","authors":"Rhys J. Williams, Robert D. Crapnell, Tom Brine, Craig E. Banks","doi":"10.1002/elan.202400075","DOIUrl":"10.1002/elan.202400075","url":null,"abstract":"The use of polymer additive manufacturing to produce electrodes is an increasingly popular area of electrochemical research. However, one downside of additively manufactured electrodes is the frequent need to remove polymer from the electrode surface to reveal a triple-phase boundary in order for improved electrode performance to be realized. A common way to achieve this, is surface activation via chronoamperometry within an aqueous sodium hydroxide solution. However, it has not been investigated whether the same activation can be carried out effectively in solutions of sodium hydroxide in simple alcohols. Therefore, in this work, we study the effect of performing common chronoamperometric additive manufacturing electrode activation methodologies in methanolic and ethanolic solutions of 0.05 M sodium hydroxide and compare these to activation carried out in standard aqueous solutions at concentrations of both 0.05 M and 0.5 M. We show that the alcoholic solutions are more effective in removing polymer from the additive manufacturing electrode surface, but that this does not lead to any improvement in electrode currents, and furthermore appears to hinder electron transfer kinetics at the additive manufacturing electrode surface, with the latter effect shown to be related to differences in the surface functionality of the exposed carbon black filler particles. As well as being interesting chemical experiments in their own right, these results may well be of interest to electrochemists who intend for their additive manufactured electrodes to be applied in these alcohols or indeed other non-aqueous solvents.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 11","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.202400075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141198051","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

Customizing an all-in-one polydimethylsiloxane-based electroanalytical platform using a 3D-pen templated channel 利用三维笔模板通道定制基于聚二甲基硅氧烷的一体化电分析平台

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-05-31 DOI: 10.1002/elan.202300382

Jéssica da Silva do Carmo, Liriana Mara Roveda, Raphael Rodrigues, Cláudio Teodoro de Carvalho, Magno Aparecido Gonçalves Trindade

{"title":"Customizing an all-in-one polydimethylsiloxane-based electroanalytical platform using a 3D-pen templated channel","authors":"Jéssica da Silva do Carmo, Liriana Mara Roveda, Raphael Rodrigues, Cláudio Teodoro de Carvalho, Magno Aparecido Gonçalves Trindade","doi":"10.1002/elan.202300382","DOIUrl":"10.1002/elan.202300382","url":null,"abstract":"The combination of 3D-printing technology and microfluidics has garnered widespread interest for creating new designs and has opened a large window for creativity. However, some laboratories do not have the necessary technology to explore this potential advantage. In this paper, we demonstrate how to explore target technologies to fabricate a single version of a polydimethylsiloxane (PDMS)-based electroanalytical platform using a low-cost protocol and disposable materials. This protocol is cost-effective in terms of equipment and materials, allowing for the creation of a circular channel, a T-junction system, and two designs of electrochemical detectors customized onto a single platform. The interesting new device has some important characteristics, such as fabrication following green and sustainable protocols. Additionally, it can address the limitations associated with flow-based analysis, for which the classical three-electrode configuration is inadequate. It has also demonstrated the feasibility of using the device in analytical applications for the determination of salicylic acid in commercial dermocosmetic samples, including aqueous samples.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 8","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141197995","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

Performance of an aptamer-based neuropeptide Y potentiometric sensor: dependence on spacer molecule selection 基于适配体的神经肽 Y 电位传感器的性能：取决于间隔分子的选择

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-05-31 DOI: 10.1002/elan.202300387

Hayley Richardson, Alex Kline, Spyridon Pavlidis

{"title":"Performance of an aptamer-based neuropeptide Y potentiometric sensor: dependence on spacer molecule selection","authors":"Hayley Richardson, Alex Kline, Spyridon Pavlidis","doi":"10.1002/elan.202300387","DOIUrl":"10.1002/elan.202300387","url":null,"abstract":"Neuropeptide Y (NPY) plays a central role in a variety of emotional and physiological functions in humans, such as forming a part of the body′s response to stress and anxiety. This work compares the impact of MCH and PEG spacer molecules on the performance of a potentiometric NPY sensor. An NPY-specific DNA aptamer with thiol termination was immobilized onto a gold electrode surface. The performance of the sensor is compared when either an MCH- or PEG-based self-assembled monolayer is formed following aptamer immobilization. Backfilling the surface with alkanethiol spacer molecules like these is key for proper conformational folding of aptamer-target binding. Non-specific adhesion of NPY to the MCH-based sensor surface was observed via surface plasmon resonance (SPR), and then confirmed via potentiometry. It is then shown that PEG improves the sensor′s sensitivity to NPY compared to the surfaces with an MCH-based SAM. We achieve the detection of picomolar range NPY levels in buffer with a sensitivity of 36.1 mV/decade for the aptamer and PEG-based sensor surface, thus demonstrating the promise of potentiometric sensing of NPY for future wearable deployment. The sensor′s selectivity was also studied via exposure to cortisol, a different stress marker, resulting in a 13x smaller differential voltage (aptamer-specific) response compared to that of NPY.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 9","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141197949","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

A simple eco-friendly carbon paste modified electrode using chitosan-CaO nanocomposite for the voltammetric detection of the antibiotic ornidazole in real samples 使用壳聚糖-CaO 纳米复合材料的简易环保型碳浆修饰电极，用于实际样品中抗生素奥硝唑的伏安检测

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-05-16 DOI: 10.1002/elan.202300340

Ahmed A. Shamroukh, E. Rabie, H. Assaf, M. Khodari

{"title":"A simple eco-friendly carbon paste modified electrode using chitosan-CaO nanocomposite for the voltammetric detection of the antibiotic ornidazole in real samples","authors":"Ahmed A. Shamroukh, E. Rabie, H. Assaf, M. Khodari","doi":"10.1002/elan.202300340","DOIUrl":"10.1002/elan.202300340","url":null,"abstract":"Herein, an eco-friendly, simple, inexpensive electrochemical sensor for the antibiotic ornidazole (ORN) was developed based on a carbon paste electrode modified by chitosan-CaO nanocomposite (Chi-CaO-NC/CPE). Eggshell waste was utilized to prepare CaO-NPs which were then combined with chitosan (Chi) to obtain Chi-CaO-NC/CPE. The prepared Chi-CaO-NC/CPE was characterized by different techniques such as XRD, FTIR, SEM, and EDX. The produced sensor showed higher electrocatalytic activity toward ORN in (0.1 M) PBS (pH 7.0) than the unmodified CPE. The influence of pH and scanning rate on the reduction peak of ORN implies that the reduction process of ORN at the Chi-CaO-NC/CPE surface was a diffusion-controlled reaction with four electrons and four protons. Additionally, under ideal conditions, differential pulse voltammetry (DPV) revealed that the cathodic current was directly proportional to ORN concentrations within two various detection ranges of 0.015–0.3 μM and 0.3–4.5 μM. The limit of quantification (LOQ), and the limit of detection (LOD) were 0.0138 μM and 4.13×10−3 μM, respectively. Moreover, the fabricated sensor provided acceptable selectivity towards ORN, good stability, and repeatable response, with recoveries ranging from 95.8 %–102.0 %; this electrode was also successful in detecting ORN in commercial tablets and milk samples.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 9","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140970797","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 5/2024) 封面图片：（电解 5/2024）

IF 3 3区化学

Electroanalysis Pub Date : 2024-05-13 DOI: 10.1002/elan.202480501

引用次数: 0

One-pot hydrothermal biochar obtained from malt bagasse waste as an electrode-modifying material towards the stripping voltammetric sensing of lead 将麦芽蔗渣废料制成的单锅水热生物炭作为一种电极改性材料，用于铅的剥离伏安法检测

IF 2.7 3区化学

Electroanalysis Pub Date : 2024-05-13 DOI: 10.1002/elan.202300425

Alexsandra Dias da Silva, Aline Aparecida dos Santos Silva, Renê Chagas da Silva, Renata Pereira Lopes Moreira, Tiago Almeida Silva

{"title":"One-pot hydrothermal biochar obtained from malt bagasse waste as an electrode-modifying material towards the stripping voltammetric sensing of lead","authors":"Alexsandra Dias da Silva, Aline Aparecida dos Santos Silva, Renê Chagas da Silva, Renata Pereira Lopes Moreira, Tiago Almeida Silva","doi":"10.1002/elan.202300425","DOIUrl":"10.1002/elan.202300425","url":null,"abstract":"Pb2+ ions are highly toxic to living beings because they tend to bioaccumulate in the body. For this reason, the development of simpler, low-cost, and easy-to-operate techniques that can detect and quantify low concentrations of metal ions would help to identify contaminating media and improve public health. This work proposes a Pb2+ voltammetric sensor based on a carbon paste electrode modified with hydrothermal biochar (hydrochar, HC) obtained from malt bagasse waste (HC/CPE). The obtained hydrochar was characterized by zero-charge point, FT-IR, XRD and thermogravimetry. The differential pulse adsorptive anodic stripping voltammetry (DPAdASV) technique was used to perform the Pb2+ determination. After optimizing important parameters for detecting Pb2+ ions and the parameters of the voltammetric technique employed, a linear response range of 0.50 to 7.06 μmol L−1 with a limit of detection (LOD) and limit of quantification (LOQ) of 55.0 and 181.5 nmol L−1 were achieved, respectively. The developed voltammetric procedure was applied towards the Pb2+ determination at tap water and river water samples, with excellent recoveries (ranging of 91.19 to 109.22 %), proving that the HC-based electrode has great potential for detecting Pb2+ ions. Hydrothermal carbonization allowed the biomass to be converted into functionalized hydrochar, eliminating the need for subsequent functionalization/activation steps for use as a Pb2+ adsorbing material on the electrodic surface. The proposed sensor also proved to be easy to assemble and environmentally friendly by using biomass waste as the carbon material. Thus, the proposed sensor adds to the literature the possibility of simple and easy detection of metal ions with a waste reuse bias.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 9","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140983323","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 5/2024) 封面图片：（电解 5/2024）

IF 3 3区化学

Electroanalysis Pub Date : 2024-05-13 DOI: 10.1002/elan.202480501

引用次数: 0

Enhanced Performance of Complementary Electrochromic Device with Hierarchical‐Porous NiO x Decorated ITO Glasses as the Transparent Conductive Electrodes 以分层多孔 NiO x 装饰 ITO 玻璃为透明导电电极的互补电致变色装置性能增强

IF 3 3区化学

Electroanalysis Pub Date : 2024-05-11 DOI: 10.1002/elan.202400117

BIAO CHEN, Fei Hu, Yinghui Zhao, Yuanhaobo Yang, Bin Yan, Qin Yang, Yingchun Gu, Sheng Chen

引用次数: 0