Electrochemistry Communications最新文献

Investigation of the modification of gold electrodes by electrochemical molecularly imprinted polymers as a selective layer for the trace level electroanalysis of PAH 将电化学分子印迹聚合物修饰金电极作为多环芳烃痕量电分析选择层的研究

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2024-11-12 DOI: 10.1016/j.elecom.2024.107837

Farah Ibrahim , Alexandre Sala , Armand Fahs , Aoife Morrin , Clément Nanteuil , Guillaume Laffite , Ian A. Nicholls , Fiona Regan , Hugues Brisset , Catherine Branger

{"title":"Investigation of the modification of gold electrodes by electrochemical molecularly imprinted polymers as a selective layer for the trace level electroanalysis of PAH","authors":"Farah Ibrahim , Alexandre Sala , Armand Fahs , Aoife Morrin , Clément Nanteuil , Guillaume Laffite , Ian A. Nicholls , Fiona Regan , Hugues Brisset , Catherine Branger","doi":"10.1016/j.elecom.2024.107837","DOIUrl":"10.1016/j.elecom.2024.107837","url":null,"abstract":"<div><div>Electrochemical molecularly imprinted polymers (e-MIPs) were grafted for the first time as a thin layer to the surface of a gold electrode to perform trace level electroanalysis of benzo(a)pyrene (BaP). This was achieved by controlled/living radical photopolymerization of a redox tracer monomer (ferrocenylmethyl methacrylate, FcMMA) with ethylene glycol dimethacrylate in the presence of benzo(a)pyrene as the template molecule. For that purpose, a novel photoiniferter-derived SAM was first deposited on the gold surface. The SAM formation was monitored by cyclic voltammetry and electrochemical impedance spectroscopy. Then, the “grafting from” of the e-MIP was achieved upon photoirradiation during a controlled time. Differential pulse voltammetry was used to quantify BaP in aqueous solution by following the modification of the signal of FcMMA. A limit of detection of 0.19 nM in water and a linear range of 0.66 nM to 4.30 nM, were determined, thus validating the enhancement of sensitivity induced by the close contact between the e-MIP and the electrode, and the improved transfer electron.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"169 ","pages":"Article 107837"},"PeriodicalIF":4.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ solvothermal synthesis of free-binder NiCo2S4/nickel foam electrode for supercapacitor application: Effects of CTAB surfactant 用于超级电容器的自由粘合剂 NiCo2S4/ 镍泡沫电极的原位溶热合成：CTAB 表面活性剂的影响

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2024-11-12 DOI: 10.1016/j.elecom.2024.107838

A.R. Sarbishei, S.M. Masoudpanah, M. Hasheminiasari, S.A. Sanei

引用次数: 0

Corrosion of nickel foam electrodes during hydrothermal reactions: The influence of a simple protective carbon black coating 水热反应过程中泡沫镍电极的腐蚀：简单碳黑保护层的影响

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2024-11-10 DOI: 10.1016/j.elecom.2024.107835

Gillian Collins , Tara N. Barwa , Luke Glennon , P. Rupa Kasturi , Carmel B. Breslin

{"title":"Corrosion of nickel foam electrodes during hydrothermal reactions: The influence of a simple protective carbon black coating","authors":"Gillian Collins , Tara N. Barwa , Luke Glennon , P. Rupa Kasturi , Carmel B. Breslin","doi":"10.1016/j.elecom.2024.107835","DOIUrl":"10.1016/j.elecom.2024.107835","url":null,"abstract":"<div><div>Nickel foam (NF) substrates are widely used to support electrocatalysts, and this is frequently achieved using hydrothermal reactions, where the NF is immersed in the hydrothermal reactor together with the electrocatalyst precursors. However, other reactions including the corrosion of the NF and changes to the pH occur simultaneously, and these can affect the quality of the final electrocatalyst. Herein, a simple approach is devised to minimise these unwanted reactions. Carbon black (CB) was non-covalently functionalised at room temperature using tannic acid to give very stable and good dispersions of fCB in deionised water. Using a simple sonication step, the NF was coated with a uniform layer of the dispersed fCB. This layer served to minimise the corrosion of the underlying NF during the hydrothermal reactions with very good protection observed up to a temperature of 160 °C in deionised water at a pH of 2.0. The corrosion currents of the NF and fCB@NF were estimated at 8.7 µA and 3.9 µA, respectively, at room temperature in this acidic solution. Using a model reaction, the successful nucleation and growth of MnCo<sub>2</sub>O<sub>4</sub> cubes was observed at fCB@NF, but not at the corroding NF.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"169 ","pages":"Article 107835"},"PeriodicalIF":4.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-power and cost-effective readout circuit design for compact semiconductor gas sensor systems 用于紧凑型半导体气体传感器系统的低功耗、高性价比读出电路设计

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2024-11-07 DOI: 10.1016/j.elecom.2024.107834

Soon-Kyu Kwon , Jun-Nyeong Kim , Hyung-Gi Byun , Hyeon-June Kim

引用次数: 0

Wirefree Electrochemistry for Enhanced Detection and Treatment of Disease 用于增强疾病检测和治疗的免接线电化学技术

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2024-11-02 DOI: 10.1016/j.elecom.2024.107832

Oisín Foley Doyle , Robert J. Forster

引用次数: 0

A few-minute, simple, and affordable route to functionalized electrodes with DNA 用 DNA 实现功能化电极只需几分钟，既简单又实惠

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2024-04-14 DOI: 10.1016/j.elecom.2024.107729

Shahrzad Nikbin, Abbas Karami, Sadegh Khazalpour

{"title":"A few-minute, simple, and affordable route to functionalized electrodes with DNA","authors":"Shahrzad Nikbin, Abbas Karami, Sadegh Khazalpour","doi":"10.1016/j.elecom.2024.107729","DOIUrl":"10.1016/j.elecom.2024.107729","url":null,"abstract":"<div><div>A key challenge in developing DNA-based electrochemical sensors is the rapid and easy immobilization of DNA on different electrode surfaces. The current methods are often laborious and time-consuming. Here, we present a cost-effective and easy-to-perform method for efficiently functionalizing electrode surfaces with DNA in just a few minutes. Our strategy operates in two simple and rapid steps, regardless of the type of electrode, and avoids complicated and time-consuming procedures. The method uses phosphorothioate (PS) modification as an anchoring agent, which is a more cost-effective alternative to thiol (SH) modification, and eliminates the need for complex pretreatment processes. Additionally, a low-pH DNA loading method was used to quickly bind PS DNA to the gold surface without the need for surface-covering agents. We attributed the effect of low pH to the protonation of adenine (A), which leads to the formation of a parallel poly-A duplex (A motif) and facilitates vertical PS-DNA attachment to the electrode surface. Electrochemical techniques were used to confirm the vertical attachment of DNA to the electrode surface, and evaluation of the adsorption stability and hybridization efficiency confirmed the effectiveness of the method. The simplicity and efficiency of this method make it an ideal solution for researchers who require a fast and reliable method for DNA functionalization of electrode surfaces.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"169 ","pages":"Article 107729"},"PeriodicalIF":4.7,"publicationDate":"2024-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140772943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical detection of amine neurotransmitters is drastically different in buffer solutions, in vivo, and cell culture systems 胺类神经递质的电化学检测在缓冲溶液、体内和细胞培养系统中存在巨大差异

IF 4.7 3区工程技术

Electrochemistry Communications Pub Date : 2024-04-10 DOI: 10.1016/j.elecom.2024.107732

Samuel Rantataro , Laura Ferrer Pascual , Tomi Laurila

{"title":"Electrochemical detection of amine neurotransmitters is drastically different in buffer solutions, in vivo, and cell culture systems","authors":"Samuel Rantataro , Laura Ferrer Pascual , Tomi Laurila","doi":"10.1016/j.elecom.2024.107732","DOIUrl":"10.1016/j.elecom.2024.107732","url":null,"abstract":"<div><div>Detection of neurotransmitters requires high sensitivity and temporal resolution, favoring electrochemical techniques for the sensing mechanism. However, electrochemical detection of amine neurotransmitters is highly dependent on electrode surface condition and thus, results obtained in clean buffer solutions are not directly applicable to the real measurement environment <em>in vivo</em> or <em>in vitro</em>. In these more complex electrolyte solutions, the presence of antioxidants and surface-adsorbing molecules drastically alters the redox characteristics of amine neurotransmitters, their precursors and metabolites. Accordingly, we surveyed their redox characteristics in the phosphate buffered saline (PBS), cerebrospinal fluid (CSF) and cell culture medium, with high-sensitivity electrodes made of single-walled carbon nanotube network.</div><div>The concentration of surface-fouling molecules was lowest in the PBS and highest in the culture medium. Accordingly, electrochemical reaction kinetics were facile in the PBS and sluggish in the culture medium. Surprisingly, analyte molecular structure had much more importance in the CSF compared to other electrolytes, however the reaction kinetics remained to be generally slower in the CSF compared to when measured in the PBS.</div><div>Whereas the CSF also contains L-Ascorbic acid and uric acid that are electrochemically active interfering molecules, they are either completely absent or can be omitted in the <em>in vitro</em> setting. On the contrast, the culture medium contains substantially higher concentration of surface-adsorbing molecules that causes more significant fouling of electrode and thus loss of sensitivity. As the <em>in vitro</em> brain-on-a-chip applications are rapidly being adopted, direct comparison of these different experimental settings was essential to understand their implications for electrochemical sensors.</div></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"169 ","pages":"Article 107732"},"PeriodicalIF":4.7,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140790138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rational engineering design of nickel hydroxides for urea oxidation reaction: A mini-review 尿素氧化反应用氢氧化镍的合理工程设计

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-10-14 DOI: 10.1016/j.elecom.2023.107599

Shun Lu , Xingqun Zheng , Ling Fang , Fengjun Yin , Hong Liu

引用次数: 3

Towards high performance Li metal batteries: Surface functionalized graphene separator with improved electrochemical kinetics and stability 迈向高性能锂金属电池：具有改进的电化学动力学和稳定性的表面功能化石墨烯隔膜

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-10-13 DOI: 10.1016/j.elecom.2023.107598

Kihwan Kwon , Junghwan Kim , Kwangchul Roh , Patrick Joohyun Kim , Junghyun Choi

{"title":"Towards high performance Li metal batteries: Surface functionalized graphene separator with improved electrochemical kinetics and stability","authors":"Kihwan Kwon , Junghwan Kim , Kwangchul Roh , Patrick Joohyun Kim , Junghyun Choi","doi":"10.1016/j.elecom.2023.107598","DOIUrl":"https://doi.org/10.1016/j.elecom.2023.107598","url":null,"abstract":"<div><p>Lithium (Li) metal is a promising anode for next-generation batteries owing to its ultrahigh theoretical capacity (3,860 mAh g<sup>−1</sup>) and the lowest reduction potential (−3.04 vs SHE at RT). However, the development of Li-metal batteries (LMBs) is still in the research stage due to the inherent problems related to the growth of Li dendrites and unlimited volume change in Li metal. Among diverse approaches, the introduction of functional separators is regarded as an effective strategy for improving the safety and electrochemical performance of LMBs. Herein, we deposited two different graphene layers onto the separators to explore the influence of surface functionalized graphene layer on the electrochemical performance and cycle stability of LMBs. When a surface functionalized graphene separator (SFGS) was used in the LMBs, it exhibited superior electrolyte wettability than a graphene separator (GS), contributing to the improved ionic conductivity and homogeneous Li-ion flux. Due to the improved electrochemical kinetics and reversible electrochemical reactions, Li/Cu cells with the SFGS exhibited the most stable cycle performance with a high Coulombic efficiency of 98 % over 200 cycles compared with other Li/Cu cells. Our strategy would resolve many issues related to the poor electrochemical reversibility of Li-metal anodes and advance the development of practical surface-modified separators for high-performance LMBs.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"157 ","pages":"Article 107598"},"PeriodicalIF":5.4,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50173877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ concentration measurement of soluble-soluble redox couple in molten chlorides utilizing intense natural convection effect 利用强自然对流效应原位测量熔融氯化物中可溶性-可溶性氧化还原偶的浓度

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2023-10-01 DOI: 10.1016/j.elecom.2023.107576

Fei Zhu , Jianbang Ge , Yang Gao , Biwu Cai , Zichen Zhang , Feifei Jia , Shuqiang Jiao

引用次数: 1