Electrochemistry Communications最新文献

{"title":"Nickel oxide electroplating and electrode surface modification for electrochemical detection of glutamate","authors":"Eun Joong Kim ,&nbsp;Chung Mu Kang ,&nbsp;Ji-Hyung Han","doi":"10.1016/j.elecom.2024.107701","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107701","url":null,"abstract":"<div><p>The electrochemical behavior and catalytic properties of nickel oxide (NiOx) are enhanced through cathodic electroplating and subsequent electrochemical activation in an alkaline aqueous electrolyte. The electrochemical detection of ʟ-glutamate becomes feasible by introducing an amine group through immobilizing APTES ((3-aminopropyl)triethoxysilane) on the NiOx surface, resulting in a positive charge. The synergistic effect of electrochemically activated electroplated NiOx and the APTES-modified surface facilitates the effective electrochemical detection of trace ʟ-glutamate. The APTES-activated NiOx electrode exhibits a linear detection range of 0.2 nM to 2 mM for glutamate. This relatively wide concentration range is promising for the analysis of human biological fluids.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"162 ","pages":"Article 107701"},"PeriodicalIF":5.4,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000444/pdfft?md5=805d5f47a8f70c5e9da2a6324a048729&pid=1-s2.0-S1388248124000444-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140187327","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}

{"title":"Redox mediator interaction with Cupriavidus necator – spectroelectrochemical online analysis","authors":"André Gemünde ,&nbsp;Jonas Gail ,&nbsp;Dirk Holtmann","doi":"10.1016/j.elecom.2024.107705","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107705","url":null,"abstract":"<div><p>Bioelectrochemical systems with <em>Cupriavidus necator</em> present a viable solution for harnessing H₂/CO₂ mixtures as substrates, employing mediated electron transfer to an infinite electron acceptor in the form of an anode instead of O₂. Fourteen redox mediators were spectroelectrochemically characterized, and their efficiency was evaluated through screening with <em>C. necator</em> in common cuvettes with screen printed electrodes (e-Cuvettes). Key performance indicators, including total turnover number, reduction rate, and growth, were analyzed. Ferricyanide emerged as highly effective for anodic respiration, reaching a total turnover number of 8.38 over 120 h of cultivation. On the other hand, phenazine methosulfate exhibited the highest reduction rate at 2.49 mM h⁻¹ with a total of 5.16 turnovers. Contrary, growth impairment is reported for menadione, possibly leading to deficient anodic electron transfer. The utilization of a broad spectrum of these shuttle molecules highlights the potential for optimizing bioelectrochemical applications involving <em>C. necator</em>.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"162 ","pages":"Article 107705"},"PeriodicalIF":5.4,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000481/pdfft?md5=3c2df3441b0a106ce1ab1570db692627&pid=1-s2.0-S1388248124000481-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140163011","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}

{"title":"Experimental and theoretical investigation of high-performance supercapacitor based on guanidine functionalized graphene oxide","authors":"Samira Mohammadi ,&nbsp;Amir Mahdi Homayounfard ,&nbsp;S. Morteza Mousavi–Khoshdel","doi":"10.1016/j.elecom.2024.107703","DOIUrl":"10.1016/j.elecom.2024.107703","url":null,"abstract":"<div><p>Functionalization of widely used graphene oxide (GO) can be beneficial not only in tuning its characteristics along with preventing the restacking of its layers and improving wettability but also in providing pseudocapacitance as a supercapacitor electrode. In this research, for the first time, the electrochemical performance of guanidine-functionalized graphene oxide (G-GO) examined by means of both computational and experimental methods. As a high-performance supercapacitor electrode, G-GO illustrates a high specific capacitance of 612F/g at the current density of 1.5 A/g together with extraordinary cyclic stability for 12,000 cycles at high current density of 10 A/g. Moreover, quantum capacitance together with the layer distance change during functionalization reaction, calculated via density functional theory (DFT), also exhibit the superior performance of G-GO.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"163 ","pages":"Article 107703"},"PeriodicalIF":5.4,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000468/pdfft?md5=b36a5046f9f2763b2c2beae7dcf4f4e0&pid=1-s2.0-S1388248124000468-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140171785","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}

{"title":"Ultrasensitive, label-free, electrochemical detection of miRNA-206 in human plasma: A potential biomarker associated with Alzheimer’s disease","authors":"Amanda Carrico ,&nbsp;Loanda R. Cumba ,&nbsp;Miguel Medina ,&nbsp;Tobias Engel ,&nbsp;Robert J. Forster","doi":"10.1016/j.elecom.2024.107704","DOIUrl":"10.1016/j.elecom.2024.107704","url":null,"abstract":"<div><p>An impedance-based biosensor for the ultrasensitive, selective, and label-free detection of a blood miRNA associated to Alzheimer disease (AD), miRNA-206, was developed. The principle was grounded in the changes in the charge transfer resistance (R_CT) as an effect of intramolecular forces between miRNAs and ferro/ferricyanide in a well-structured transducer platform. A compact well-ordered mixed monolayer made of co-immobilized miRNA capture to 6-mercapto-1-hexanol (MCH) in a 1:4 M ratio (at 37 °C), uplifted the performance of the sensor through effectively assisting the orientation of the oligonucleotides. In this work, the remarkable response of the sensor was generated through new insights into the use of different moieties of miRNA capture to MCH, aiming to control interfacial constants, surface densities, and hybridization efficiency.A very low limit of detection, 0.15 aM, is achieved and the sensor has a wide linear dynamic range (from 1 aM to 1 μM), high selectivity to mismatches, low non-specific binding of proteins (BSA) and good stability (&lt;10 % change in response after 14 days storage). Importantly, the sensor successfully measured miRNA-206 concentrations in real plasma samples (&gt;95 % recovery), correlating directly with qPCR results. Nanomolar concentrations of miRNA-206 were found in the plasma of confirmed AD patients, while healthy controls, had a concentration of pM or lower. The biosensor's ability to quantitatively detect miRNA-206 in plasma without target amplification, e.g., using PCR, is significant, opening the possibility of developing a point-of-care diagnostic device for AD screening, contributing to clinical trials and patient care.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"162 ","pages":"Article 107704"},"PeriodicalIF":5.4,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S138824812400047X/pdfft?md5=735901ef481a612e9881729345cba1e8&pid=1-s2.0-S138824812400047X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140171754","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}

{"title":"Suppression of dendrite formation via ultrasonic stimulation","authors":"Yifeng Zhang ,&nbsp;Haobo Dong ,&nbsp;Ruoxi Yang ,&nbsp;Hongzhen He ,&nbsp;Guanjie He ,&nbsp;Frederic Cegla","doi":"10.1016/j.elecom.2024.107700","DOIUrl":"10.1016/j.elecom.2024.107700","url":null,"abstract":"<div><p>This research introduces a chemistry-agnostic approach to achieve rapid and degradation-free battery charging via ultrasonic agitation. An ultrasonic device operating in the megahertz range was used to stimulate electrolyte flow from outside the cell. The acoustic streaming effect accelerates ion transport from the bulk electrolyte to the electrode surface and suppresses the formation of an ion depletion zone. An experimental setup was used to optically observe the formation of dendrites when the current imposed across two zinc electrodes exceeded the limiting current. Beyond this limit, diffusion alone cannot provide sufficient ions, resulting in an ion depletion zone. It was subsequently shown that dendrite formation was reduced by over 98% when 15x the limiting current was forced across the electrodes and acoustic stimulation was delivered. Furthermore, it was shown that compared to the scenario without ultrasonic stimulation, the steady state potential was also reduced by 29%, indicating much better ion exchange between the electrodes. These findings suggest that ultrasonic stimulation can be a tool for enhancing electrochemical processes such as battery charging and discharging.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"162 ","pages":"Article 107700"},"PeriodicalIF":5.4,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000432/pdfft?md5=4599bb97873297a6b44d3ff427e9846c&pid=1-s2.0-S1388248124000432-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140106207","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}

{"title":"Investigation of the effect of surface modification with organosilane on the multi-redox electrochemical behavior of Co3[Co(CN)6]2 nanocubes","authors":"Anderson F.M. dos Santos ,&nbsp;Lucyano J.A. Macedo ,&nbsp;Everson T.S. Gerôncio ,&nbsp;Roberto A.S. Luz ,&nbsp;Welter Cantanhêde","doi":"10.1016/j.elecom.2024.107696","DOIUrl":"10.1016/j.elecom.2024.107696","url":null,"abstract":"<div><p>The search for new functional nanomaterials rounds science for decades and supramolecular chemistry is an approach used to properly achieve this goal. The present work reports the successful synthesis of Co₃[Co(CN)₆]₂@SiO₂-NH₂ nanomaterial, formed from the supramolecular association of cobalt Prussian blue analogue, Co₃[Co(CN)₆]₂, and an external amorphous layer (@SiO₂-NH₂) originated from the addition of organosilanes as tetraethyl orthosilicate (TEOS) and 3-aminopropyltrimethoxysilane (APTMS). The amount of tetraethyl orthosilicate (TEOS) (0.22, 0.33, 0.44, 0.55, and 0.67 nmol) used to prepare SiO₂ layer was varied to assess its impact on the properties of the new synthesized nanomaterial, which were named Co₃[Co(CN)₆]₂@SiO₂-NH₂-01 to Co₃[Co(CN)₆]₂@SiO₂-NH₂-05. XRD analyses were consistent with the pattern for Co₃[Co(CN)₆]₂. FTIR measurements confirmed the modification of Co₃[Co(CN)₆]₂ nanocubes surface by the formation of SiO₂, and the attachment of NH₂ groups after the APTMS addition was confirmed by the ninhydrin test, since the UV–Vis analysis showed a band around 576 nm, typical of a Ruherman’s purple. TEM images showed Co₃[Co(CN)₆]₂ nanocubes with averaging size around 110 nm, and an amorphous SiO₂ layer around 15 nm thick after modification by TEOS and APTMS. Cyclic voltammetry analyses of Co₃[Co(CN)₆]₂@SiO₂-NH₂ nanomaterials showed the appearance of second redox process in lower scan rates (10–50 mV s⁻¹), as the surface of Co₃[Co(CN)₆]₂ is modified by TEOS and APTMS. Beyond that, electron transfer processes were evident even with the dielectric coating of SiO₂ at high scan rates, which makes it suitable for application as an electrochemical biosensor as NH₂-modified-SiO₂ is capable of being functionalized with a wide range of molecules.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"162 ","pages":"Article 107696"},"PeriodicalIF":5.4,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000390/pdfft?md5=da5cf811182429bdcfae6edf7785eaec&pid=1-s2.0-S1388248124000390-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140106252","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}

{"title":"Efficacy of films of uncapped gold nanoparticle as electrodes for direct electron transfer to redox proteins","authors":"Kentaro Akiyama ,&nbsp;Hirotaka Okabe ,&nbsp;Taisei Motomura ,&nbsp;Naoki Matsuda ,&nbsp;Yasuhiro Mie","doi":"10.1016/j.elecom.2024.107695","DOIUrl":"10.1016/j.elecom.2024.107695","url":null,"abstract":"<div><p>Electrochemical manipulation of enzymes is expected to enable the rapid detection of marker molecules and the efficient production of valuable materials. We have fabricated an Au nanoparticle (AuNP) thin film electrode in our previous study, which enables more enhanced heterogeneous electron transfer reactions than a conventional planner Au electrode. In this study, electrochemical evaluation of cytochrome <em>c</em> was performed using the AuNP thin film electrodes with and without self-assembled monolayer (SAM) modification to assess its practicality for protein electrochemistry. The 4-pyridinethiol- and 7-carboxy-1-heptanethiol-modified AuNP thin film electrodes showed much larger faradaic current values attributed to redox reactions compared to those of the Au electrodes. The results indicate that the nanostructural effects of the AuNP thin film electrode are beneficial. Importantly, even when the non-modified (bare) AuNP thin film electrode was applied, it exhibited the clear electrochemical response of cyt <em>c</em>, while the bare Au electrode showed no such a response. This study provides evidence that the AuNP thin film electrode functions as a potent bioelectrocatalysts due to the nanostructure-specific properties.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"161 ","pages":"Article 107695"},"PeriodicalIF":5.4,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000389/pdfft?md5=f55da446d307c81f2afb67c2d4d39f8b&pid=1-s2.0-S1388248124000389-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140106329","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}

{"title":"Polymer-based passive layer to stabilize zinc anode in aqueous electrolyte","authors":"H. Chotard ,&nbsp;P.L. Taberna ,&nbsp;P. Simon","doi":"10.1016/j.elecom.2024.107697","DOIUrl":"10.1016/j.elecom.2024.107697","url":null,"abstract":"<div><p>Metallic zinc holds promise as a cost-effective and scalable material for secondary energy storage applications. However, its inherent reversibility issues hinder its practical implementation. Among various strategies, interface engineering has emerged as a promising approach to enhance the reversibility of zinc anodes. Herein we introduce an innovative method involving the parallel deposition of poly(acrylic acid) (PAA) and zinc metal, creating a composite layer of polymer and zinc, denoted as Zn-PAA. This unique Zn-PAA layer deposition technique remarkably enhances interfacial behavior, ensuring superior cyclic stability in symmetric cells. Moreover, the Zn-PAA layer reduces polarization effects and effectively mitigates interface alterations during plating and stripping processes resulting in increased interface stability. This study highlights the potential of simultaneous electropolymerisation and zinc deposition as a promising strategy to coat and densify interface on zinc anode with intertangled matrix of zinc and polymer for improving the performance and stability of zinc anodes in batteries.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"162 ","pages":"Article 107697"},"PeriodicalIF":5.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000407/pdfft?md5=91251aca7371fce257deccc26c52a573&pid=1-s2.0-S1388248124000407-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140106256","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}

{"title":"High performance carboxymethyl cellulose- polyethylene oxide polymer binder for black phosphorus anode in lithium-ion batteries","authors":"Fangli Xiao ,&nbsp;Bofeng Wang ,&nbsp;Xing Gao ,&nbsp;Lingke Li ,&nbsp;Wenqiang Ai ,&nbsp;Shuo Zhao ,&nbsp;Yang Liu ,&nbsp;Lei Zu ,&nbsp;Huiqin Lian","doi":"10.1016/j.elecom.2024.107699","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107699","url":null,"abstract":"<div><p>Black phosphorus (BP) is regarded as a promising anode material due to its high theoretical specific capacity and fast charging safety. However, the problems of huge volume expansion and moderate electrical conductivity may restrict its performance. In this work, we present a novel 3D network binary polymer binder synthesized from carboxymethyl cellulose (CMC) and polyethylene oxide (PEO) for adapt to lithium-ion batteries of BP and graphite (G) composite anode (BP-G). There are the following characteristics of the binder: CMC and PEO are crosslinked through intermolecular forces; while CMC and PEO are connected to BP through strong intermolecular forces, respectively; BP and graphite are connected through P<img>C and P<img>O<img>C bonds to form composite anode. So as to form a sturdy structure and effectively accommodate the volume expansion of BP during charging-discharging processes, while avoiding loss of electrical contact between electrode components. Accordingly, the lithium-ion battery shown an excellent electrochemical performance, such as a high initial discharge capacity of 1602 mA h g⁻¹ at 0.5 A/g.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"161 ","pages":"Article 107699"},"PeriodicalIF":5.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000420/pdfft?md5=0d62ca0ce47ac33dc889555f00c0752e&pid=1-s2.0-S1388248124000420-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140103608","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}

{"title":"Pitch-derived P-doped carbon/GeP3 composite via ball milling towards enhanced sodium-ion storage","authors":"Kewei Shu ,&nbsp;Cunguo Yang ,&nbsp;Huizhu Niu ,&nbsp;Xiaorui Fuyan ,&nbsp;Shuqi Yang ,&nbsp;Haihua Wang","doi":"10.1016/j.elecom.2024.107698","DOIUrl":"https://doi.org/10.1016/j.elecom.2024.107698","url":null,"abstract":"<div><p>GeP₃ is a promising anode material for sodium ion battery due to better conductivity, relatively high theoretical capacity and improved mechanical endurance compared to phosphorus and other phosphides. However unsatisfied rate capability and cycling stability is still an annoying issue that hinders the application of GeP₃. Here, GeP₃ was hybridized with P doped carbon (PPC) derived from low-cost coal tar pitch to prepare composite electrode. Through ball-milling process, the GeP₃ and PPC was homogenously mixed and form fused, secondary particles as confirmed by electron microscope. The formation of P-C and P-O-C bond between GeP₃ and carbon matrix was evidenced by XPS, and prompted by P doping level and O content in PPC. The electrochemical performance of the composite electrodes was evaluated, demonstrated much enhanced properties compared to bare GeP₃ and also GeP₃/carbon black electrode. High reversible capacity of 781 mAh/g was achieved by GeP₃/PPC-950 at 0.05 A/g. At higher current density of 2 A/g, the capacity can maintain at 360 mAh/g, 46% of the value that obtained at 0.05 A/g. The correlation between the structure of carbon and battery performance was discussed. The improvement in battery performance can be attributed to suppressed volume expansion and good conductive network of the GeP₃/PPC composite, which affected by P doping level and O content of PPC.</p></div>","PeriodicalId":304,"journal":{"name":"Electrochemistry Communications","volume":"161 ","pages":"Article 107698"},"PeriodicalIF":5.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1388248124000419/pdfft?md5=34f4f94b84f2081de8e50a7cb1e7b86d&pid=1-s2.0-S1388248124000419-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140095905","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}