Electrochemistry Communications最新文献_第10页

Electrochemical analysis of Ca2+ based on DNAzyme catalyzed degradation of DNA hydrogel 基于 DNA 酶催化 DNA 水凝胶降解的 Ca2+ 电化学分析

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-13 DOI: 10.1016/j.elecom.2024.107755

Hua Chai , Chengyu Yan , Jiarong Guo , Fengrui Lei , Peng Miao

{"title":"Electrochemical analysis of Ca2+ based on DNAzyme catalyzed degradation of DNA hydrogel","authors":"Hua Chai , Chengyu Yan , Jiarong Guo , Fengrui Lei , Peng Miao","doi":"10.1016/j.elecom.2024.107755","DOIUrl":"10.1016/j.elecom.2024.107755","url":null,"abstract":"<div>Calcium ion is a type of indispensable metal elements in biology, which participates in processes like maintaining the excitability of neuromuscular muscles. However, calcium content should be monitored in a safety range. Herein, a novel electrochemical method is developed for Ca2+ assay by monitoring electrochemical response after DNAzyme catalyzed DNA hydrogel degradation. Pure DNA hydrogel is first built with three-way junction scaffolds and linkers containing Ca2+-dependent DNAzyme sequence. In the presence of target Ca2+, the substrates in linkers are cleaved and DNA hydrogel can be degraded gradually. The encapsulated electrochemical species thus facilely interact with the electrode, leading to the increase of electrochemical responses. This electrochemical method for Ca2+ quantification is selective and sensitive, which also performs satisfactorily challenging biological samples like sweat and urine.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"165 ","pages":"Article 107755"},"PeriodicalIF":5.4,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000985/pdfft?md5=75ec2a9b239ad8b02cef618858194ac4&pid=1-s2.0-S1388248124000985-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140930518","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

Evaluation of in-plane architecture in a thermo-electrochemical cell with nanostructured and porous Sb:SnO2 electrodes 评估带有纳米结构和多孔 Sb:SnO2 电极的热电化学电池中的面内结构

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-11 DOI: 10.1016/j.elecom.2024.107750

S. Castro-Ruiz, J. García-Cañadas

{"title":"Evaluation of in-plane architecture in a thermo-electrochemical cell with nanostructured and porous Sb:SnO2 electrodes","authors":"S. Castro-Ruiz, J. García-Cañadas","doi":"10.1016/j.elecom.2024.107750","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107750","url":null,"abstract":"<div>Thermo-electrochemical cells (TECs) are able to convert heat into electricity. They are formed by two electrodes (typically Pt) separated by a redox electrolyte (usually 0.4 M aqueous ferro/ferricyanide). The widely adopted architecture of TECs consists of the two electrodes separated by an electrolyte channel. To our knowledge, no studies have been reported exploring a different architecture. Here, we evaluate an alternative configuration, which comprises a substrate with the two electrodes at its ends and with the electrolyte added on the top contacting both electrodes, forming a planar configuration. We explore first the use of the standard Pt electrodes deposited on top of a conductive glass substrate. Then, we replace the Pt by nanostructured and porous Sb-doped SnO2. The planar configurations are compared with their corresponding typical architectures using the common ferro/ferricyanide electrolyte. It was found that the planar TEC with Sb:SnO2 reached a temperature coefficient of 1.76 mV/K, higher than the value obtained in the standard configuration with Sb:SnO2 (1.21 mV/K), and also higher than the planar architecture with Pt electrodes, which showed the typical value for the ferro/ferricyanide electrolyte (1.45 mV/K). As a consequence of this significantly larger value, a 29.7 % higher maximum power output than the planar TEC with Pt was observed. Our study identifies for the first time interesting new features when a planar architecture is employed, opening the door to explore in more detail this alternative configuration in TECs.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"165 ","pages":"Article 107750"},"PeriodicalIF":5.4,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000936/pdfft?md5=4c2a4d2414cffed2e15a4222027e46d9&pid=1-s2.0-S1388248124000936-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140913715","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

Finite element modeling simulation of oxygen evolution during charging in lithium-oxygen batteries 锂氧电池充电过程中氧演化的有限元建模模拟

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-11 DOI: 10.1016/j.elecom.2024.107752

Shotaro Hanada , Shuji Nakanishi , Yoshiharu Mukouyama

{"title":"Finite element modeling simulation of oxygen evolution during charging in lithium-oxygen batteries","authors":"Shotaro Hanada , Shuji Nakanishi , Yoshiharu Mukouyama","doi":"10.1016/j.elecom.2024.107752","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107752","url":null,"abstract":"<div>The quest for advanced energy storage solutions has intensified the focus on developing next-generation secondary batteries, with lithium-oxygen batteries (LOB) standing out for their superior theoretical gravimetric energy density. This study introduces a novel model-based approach to battery development, enabling the detailed analysis of charge–discharge cycles and oxygen evolution efficiency within a virtual environment. Our model distinctively simulates the oxidative decomposition of lithium peroxide (Li2O2) and differentiates between its formation through solution and surface pathways, addressing the complexities of the charging process and its multiple elementary steps. The developed model further categorizes the oxidative decomposition species into four distinct types, facilitating a comprehensive understanding of their interactions, voltage profile changes, and O2 evolution within the battery's porous cathode. This approach not only enhances the understanding of battery behavior but also aids in refining the design of component materials, thereby propelling forward the development of LOBs with improved energy density and cycle performance.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"165 ","pages":"Article 107752"},"PeriodicalIF":5.4,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S138824812400095X/pdfft?md5=e657c02ea13fb818f45419a66633853d&pid=1-s2.0-S138824812400095X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140952451","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

Variations in flavin redox states during extracellular electron transfer and electron conduction in Shewanella oneidensis Shewanella oneidensis 细胞外电子传递和电子传导过程中黄素氧化还原态的变化

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-10 DOI: 10.1016/j.elecom.2024.107751

Yoshihide Tokunou , Hiromasa Tongu , Masanori Toyofuku , Nobuhiko Nomura

{"title":"Variations in flavin redox states during extracellular electron transfer and electron conduction in Shewanella oneidensis","authors":"Yoshihide Tokunou , Hiromasa Tongu , Masanori Toyofuku , Nobuhiko Nomura","doi":"10.1016/j.elecom.2024.107751","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107751","url":null,"abstract":"<div>Flavin is one of the most prevalent redox molecules utilized by electroactive bacteria. Electroactive bacteria form a three-dimensional architecture with multiple cell assemblages on electrodes in bioelectrochemical systems. This provokes the importance of unveiling the redox chemistry of flavins during electron transfer not only at the bacteria/electrode interface but also inside cell assemblages. However, it has been difficult to directly compare the redox species contributing to each electron transfer reaction. In this study, to simultaneously detect the flavin redox species at the electrode surface and those in cell assemblages, we conducted bipotentiometric cyclic voltammetry on a colony of Shewanella oneidensis MR-1. The bipotentiometric data showed that flavin mononucleotide proceeds the redox cycle at − 0.43 V (vs. standard hydrogen electrode) in the MR-1 colony assignable to the semiquinone/hydroquinone redox cycle, which was supported by experiments with semiquinone scavenger and gene deletion mutants. Notably, the peak at − 0.43 V was not detected at the electrode surface, indicating that the flavin redox cycles and redox potentials involved in the electron transfer inside MR-1 assemblages differ from those at the MR-1/electrode interface. The measurement system presented herein offers a platform to clarify the redox reactions in cell assemblages as well as at the bacteria/electrode interface.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"165 ","pages":"Article 107751"},"PeriodicalIF":5.4,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000948/pdfft?md5=2f41ee2d20231653e3149a42e8d20907&pid=1-s2.0-S1388248124000948-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140918533","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

Development of an H2 fuel cell electrochemical system powered by Escherichia coli cells 开发以大肠杆菌细胞为动力的 H2 燃料电池电化学系统

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-10 DOI: 10.1016/j.elecom.2024.107746

Torgom Seferyan , Lusine Baghdasaryan , Meri Iskandaryan , Karen Trchounian , Anna Poladyan

{"title":"Development of an H2 fuel cell electrochemical system powered by Escherichia coli cells","authors":"Torgom Seferyan , Lusine Baghdasaryan , Meri Iskandaryan , Karen Trchounian , Anna Poladyan","doi":"10.1016/j.elecom.2024.107746","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107746","url":null,"abstract":"<div>Because of the growing high importance of the development of biocatalytic fuel cell (FC) technologies for renewable energy-producing and testing systems for medical or environmental purposes, in this study, we constructed and demonstrated an H2 FC voltammeter working with graphite sample testing micro-strips and based on Escherichia coli microbial cells. Presented H2 FC voltammeter that provides fast and precise testing of bio-electrochemical possible reactions in biosamples for H2 and other gases, is automated with software which works in NI LabVIEW programming environment, has amplifier cascade system with high internal resistance, temperature controlling and resistance cascade. Microbial Hydrogenase (Hyd) enzymes reversibly catalyze the formation and oxidation of H2. Isolation and characterization of O2-tolerant [NiFe]-hydrogenases (Hyds) have given rise to new concepts in H2 FC. Escherichia coli and [NiFe]-Hyds can be applied as a biocatalyst anode in biofuel cells (BFCs). We evaluated the efficiency of applying the 3 µl (1.5 mg cell dry weight) E. coli intact cells or crude extracts on 0.5 cm2 as anode catalyzers in the bio-electrochemical system. The highest electrical potential (up to 0.7 V) was achieved with bacterial whole cells, which were grown on glucose and glycerol.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"165 ","pages":"Article 107746"},"PeriodicalIF":5.4,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000894/pdfft?md5=04d206ce385402be163c89eb27c87239&pid=1-s2.0-S1388248124000894-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140914128","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

The effect of Al on the corrosion resistance of binary Mg-Al solid solutions: Combining in-situ electrochemistry with combinatorial thin films 铝对镁铝二元固溶体耐腐蚀性的影响：原位电化学与组合薄膜相结合

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-07 DOI: 10.1016/j.elecom.2024.107749

Markus Felten , Alexander Lutz , Shamsa Aliramaji , Siyuan Zhang , Christina Scheu , Jochen Schneider , Daniela Zander

{"title":"The effect of Al on the corrosion resistance of binary Mg-Al solid solutions: Combining in-situ electrochemistry with combinatorial thin films","authors":"Markus Felten , Alexander Lutz , Shamsa Aliramaji , Siyuan Zhang , Christina Scheu , Jochen Schneider , Daniela Zander","doi":"10.1016/j.elecom.2024.107749","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107749","url":null,"abstract":"<div>The effect of varying Al concentrations on the electrochemical corrosion resistance of binary Mg-Al solid solutions thin films under alkaline immersion conditions was investigated via a combination of in-situ flow-cell, scanning vibrating electrode technique and microscopy analysis. These spatially resolving characterization techniques are employed along the Al concentration gradient of the combinatorically grown thin films enabling efficient screening of the Al concentration dependent electrochemical corrosion behaviour. The analysis revealed an increasing corrosion resistance with increasing Al concentration, as a consequence of Al induced hydroxide reinforcement. Specifically, the addition of >4 wt.% Al decreases the corrosion current density in the range of 70–90 % compared to pure Mg.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"164 ","pages":"Article 107749"},"PeriodicalIF":5.4,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000924/pdfft?md5=6a48915b30ee83ee9de4ec5c02cf05d8&pid=1-s2.0-S1388248124000924-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140905588","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

Reliable unencapsulated Ag/Ag2S micro-reference electrodes for battery research and other applications in organic media 用于有机介质中电池研究和其他应用的可靠无封装银/银 2S 微型参比电极

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-07 DOI: 10.1016/j.elecom.2024.107747

Neriah Yan-Jie Tan , Yu Wang , Siaw-Wei Ang , Qiu-Jing Seah , Ming-Ming Sun , Rui-Qi Png , Peter K.H. Ho , Lay-Lay Chua

{"title":"Reliable unencapsulated Ag/Ag2S micro-reference electrodes for battery research and other applications in organic media","authors":"Neriah Yan-Jie Tan , Yu Wang , Siaw-Wei Ang , Qiu-Jing Seah , Ming-Ming Sun , Rui-Qi Png , Peter K.H. Ho , Lay-Lay Chua","doi":"10.1016/j.elecom.2024.107747","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107747","url":null,"abstract":"<div>Reliable electrochemical measurements depend on the availability of robust reference electrodes (RE) with well-defined potentials. While many reliable REs are known, they are not applicable in certain demanding media such as ionic liquids, nor in small confined spaces. Here, we describe the fabrication of a simple yet robust Ag/Ag2S micro-reference electrode (μ-RE) where a micron-thick Ag2S layer is formed by isothermal reaction with sulfur vapor. Scanning electron microscopy, X-ray photoemission spectroscopy, and spectroscopic ellipsometry characterization reveals that the optimal morphology corresponds to a slightly porous Ag2S film. We demonstrate that the Ag/Ag2S μ-RE can be operated in and cycled through a wide variety of polar organic solvents, including common protic solvents (EtOH), aprotic solvents (ACN, DMSO, NMP, DMF) and ionic liquids (EMIM-TFSI, BMP-TFSI), with short equilibration time (tens of seconds) and little drift (<20 mV), without requiring encapsulation, protective liquid junctions, nor special conditioning. A redox potential of 0.54 ± 0.02 V was obtained for ferrocene in acetonitrile, which places this RE at 0.08 V vs Ag/AgCl. We have also successfully embedded the electrode inside the CR2032 coin cell to perform cyclic voltammetry of battery materials. These results underpin the suitability of this simple micro-reference electrode for a wide variety of electrochemical measurements in demanding and/or miniaturized environments.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"165 ","pages":"Article 107747"},"PeriodicalIF":5.4,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000900/pdfft?md5=b79c3cfb6ab46dcd32af023516841583&pid=1-s2.0-S1388248124000900-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140913779","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

Numerical modeling and performance analysis of anode with porous structure for aluminum-air batteries 铝-空气电池多孔结构阳极的数值建模和性能分析

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-06 DOI: 10.1016/j.elecom.2024.107748

Jitai Han , Kui Zhu , Peng Li , Yin Li

{"title":"Numerical modeling and performance analysis of anode with porous structure for aluminum-air batteries","authors":"Jitai Han , Kui Zhu , Peng Li , Yin Li","doi":"10.1016/j.elecom.2024.107748","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107748","url":null,"abstract":"<div>Aluminium-air batteries have been considered as one of the most promising next-generation energy storage devices. In this work, based on COMSOL Multiphysics, we firstly explored the effect of 3D pore size structure change on the permeation performance of the solution. The results showed that enhancing the permeation stroke of permeable solutions was beneficial to expanding the electrode reaction contact area, but it would reduce the permeation and corrosion resistance effects. For this reason, we further carried out a secondary study of TPMS structure on fluid permeation and its electrochemical performance based on the TPMS structure modelling mechanism. The results showed that the TPMS structure possessed both good solution permeation reaction rate and good corrosion resistance. Additionally, in order to further verify the validity of the simulation data, we carried out the validation of the self-corrosion rate, discharge properties, and electrochemical properties. From the final data, the discharge voltage of the TPMS structure was only 1.43 V, but its corrosion current and polarisation impedance were 2.207 × 10−2 A/cm2 and 2.2 Ω∙cm2, respectively. At the same time, the structure also had good solution permeability. Therefore the porous anode structure design for aluminium-air batteries in three-dimensional state is preferred.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"164 ","pages":"Article 107748"},"PeriodicalIF":5.4,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000912/pdfft?md5=45b15bbe6ddabcfe6338eb2a8108dce8&pid=1-s2.0-S1388248124000912-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140902298","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

N-doped clay-like Ti3C2Tx MXene/N-doped CNTs composites for ethylene glycol detection in ambient air and exhaled breath 用于检测环境空气和呼出气体中乙二醇的 N 掺杂粘土状 Ti3C2Tx MXene/N 掺杂 CNTs 复合材料

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-05-03 DOI: 10.1016/j.elecom.2024.107738

Zhiwen Shi , Lijuan Qiao , Mei Ma , Zhi Jia , Bingxin Liu , Li Gao

{"title":"N-doped clay-like Ti3C2Tx MXene/N-doped CNTs composites for ethylene glycol detection in ambient air and exhaled breath","authors":"Zhiwen Shi , Lijuan Qiao , Mei Ma , Zhi Jia , Bingxin Liu , Li Gao","doi":"10.1016/j.elecom.2024.107738","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107738","url":null,"abstract":"<div>Ethylene glycol is odorless and harmful to humans. Each year, a large number of fatal cases are caused by ethylene glycol poisoning. Therefore, rapid identification of ethylene glycol is crucial. In this study, clay-like Ti3C2Tx MXene exhibits a larger interlayer spacing compared to accordion-like Ti3C2Tx MXene, which enhances the gas diffusion channels. Nitrogen doping can increase the active sites of clay-like Ti3C2Tx MXene. The introduction of nitrogen-doped carbon nanotubes into N-Ti3C2Tx was carried out to enhance selectivity towards ethylene glycol, leading to the formation of N-Ti3C2Tx MXene/N-CNTs. The N-Ti3C2Tx MXene/N-CNTs exhibits significant selectivity towards the ethylene glycol at room temperature. Meanwhile, the detection limit was 0.3484 ppm, with a shortened response/recovery time of 10.57/6.29 s. Meanwhile, the ethylene glycol sensor device has been prepared through custom-made circuit boards and sensing programs. Moreover, the adsorption and oxidation process of ethylene glycol on N-Ti3C2Tx MXene/N-CNTs was explored through in-situ infrared spectroscopy testing. This study revealed that the oxygen vacancies on the surface of N-Ti3C2Tx MXene/N-CNTs play a crucial role in the oxidative catalytic detection of ethylene glycol. The strategy of N-Ti3C2Tx MXene/N-CNTs provides a new avenue for the detection of ethylene glycol.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"164 ","pages":"Article 107738"},"PeriodicalIF":5.4,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S138824812400081X/pdfft?md5=9b94d206512b6839d9c2e9c878fe43de&pid=1-s2.0-S138824812400081X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140825981","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

Local electrochemiluminescence imaging using scanning electrochemical cell microscopy 利用扫描电化学细胞显微镜进行局部电化学发光成像

IF 5.4 3区工程技术

Electrochemistry Communications Pub Date : 2024-04-30 DOI: 10.1016/j.elecom.2024.107737

Yufei Deng , Xiaofan He , Rong Jin , Dechen Jiang , Danjun Fang

{"title":"Local electrochemiluminescence imaging using scanning electrochemical cell microscopy","authors":"Yufei Deng , Xiaofan He , Rong Jin , Dechen Jiang , Danjun Fang","doi":"10.1016/j.elecom.2024.107737","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107737","url":null,"abstract":"<div>In this communication, local electrochemiluminescence (ECL) imaging is achieved using scanning electrochemical cell microscopy (SECCM) to create a localized region for the occurrence of ECL reaction. The system is demonstrated using a droplet at the micropipette that is contact with the prepared Ru-Silica@Au particles at indium tin oxide (ITO) slide. Tri-n-propylamine (TPrA) in the droplet reacts with ruthenium complex in a 10 μm-diameter-region to produce ECL emission, which is recorded by photo multiplier tube (PMT) underneath the ITO slide. By contacting each local region consecutively, the distribution of steady-state current and the related ECL emission at the ITO surface is imaged. The local ECL intensity show an approximately linear dependence with the current, but obvious deviation from the linear curve is observed at some regions. This result suggests that the ECL emission is not only determined by the transferred electron number in the electrochemical reaction, and also affected by local environments at ITO surface. As compared with the traditionally used ECL imaging in the bulk solution, this strategy avoids the cross-talking of ECL emission from nearby regions, and could offer a new way to unveil more molecular mechanism in the ECL reaction.</div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"164 ","pages":"Article 107737"},"PeriodicalIF":5.4,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000808/pdfft?md5=4db0c36668499413e0e49adbf6d77201&pid=1-s2.0-S1388248124000808-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140843747","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