ECS Advances最新文献_第6页

Tuning the Selectivity of Electrocatalytic CO2 Reduction Reaction via Anion-driven Nanostructuring of Copper Electrodeposits 阴离子驱动纳米铜镀层调整电催化CO2还原反应的选择性

ECS Advances Pub Date : 2023-05-30 DOI: 10.1149/2754-2734/acd9dc

C. Suresh, Manjeet Mudgil, Prafull Prabhakarrao Choudhari, Pravin P Ingole

{"title":"Tuning the Selectivity of Electrocatalytic CO2 Reduction Reaction via Anion-driven Nanostructuring of Copper Electrodeposits","authors":"C. Suresh, Manjeet Mudgil, Prafull Prabhakarrao Choudhari, Pravin P Ingole","doi":"10.1149/2754-2734/acd9dc","DOIUrl":"https://doi.org/10.1149/2754-2734/acd9dc","url":null,"abstract":"Electrochemical CO2 reduction (ECR) to value-added products is one of the potential ways to utilise CO2 as a feedstock, thereby decreasing its level in the atmosphere as it has harmful repercussions on planet Earth. Copper (Cu)-nanostructures have demonstrated a great potential to convert CO2 into valuable higher-end hydrocarbons electrochemically but with poor selectivity. Therefore, novel strategies to tune Cu-based electrocatalysts’ activity and selectivity toward multi-carbon products, particularly at low overpotential, are highly desirable. In the present work, we report an atom-economic strategy to tune the physicochemical properties and the electrocatalytic activity of Cu-nanostructures towards ECR. The Cu-nanostructures synthesized via pulse electrodeposition from an electrolyte bath containing Cu-precursor salts with varying anions (viz. acetates, nitrates, sulphates, and chlorides) are investigated for their effect on the physicochemical properties and the ECR performance. The Cu-electrodeposits from Cu-chloride, having cubic morphology, exposed Cu(100) facets, higher Cu+ content and enhanced electrochemical active surface area demonstrated the best ECR performance depicting good selectivity for ethylene formation.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125550893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of Ni–TiO2 Nanocomposites as Enzyme–Less, Amperometric Sensors for the Electrooxidation of Glucose 葡萄糖电氧化无酶安培传感器Ni-TiO2纳米复合材料的合成

ECS Advances Pub Date : 2023-05-25 DOI: 10.1149/2754-2734/acd404

J. P. de los Rios, Vicente Galvan, G. Prakash

{"title":"Synthesis of Ni–TiO2 Nanocomposites as Enzyme–Less, Amperometric Sensors for the Electrooxidation of Glucose","authors":"J. P. de los Rios, Vicente Galvan, G. Prakash","doi":"10.1149/2754-2734/acd404","DOIUrl":"https://doi.org/10.1149/2754-2734/acd404","url":null,"abstract":"The simple synthesis of a Ni–TiO2 nanocomposite supported on Vulcan carbon (XC–72 R) for the electrooxidation reaction of glucose is reported. Four transition metal weight ratios were synthesized and characterized. Cyclic voltammetry studies in 0.1 M NaOH demonstrate that the four metal catalysts can effectively oxidize 1 mM glucose, with the 3:1 (60%) Ni to Ti nanocomposite yielding the highest current. The 60% Ni–TiO2/XC72R catalyst was used to construct an enzyme–less, chronoamperometric sensor for glucose detection in an alkaline medium. Using 50 μM aliquots of glucose at a potential of +0.7 V (vs Hg/HgO), the sensor responded rapidly (<3 s), provided a sensitivity of 3300 μA mM−1 cm−2, detection limits of 144 nM (Signal/Noise = 3), and excellent selectivity and reproducibility. The glucose aliquot concentrations were then increased to 1 mM to mimic physiological blood conditions of 1–20 mM. At a potential of +0.7 V (vs Hg/HgO), the sensor continued to respond rapidly (<1 s), showed a sensitivity of 273.7 μA mM−1 cm−2, detection limits of 3.13 μM (S/N = 3), and excellent selectivity and reproducibility. The catalyst also exhibited an ideal anti–poisoning capability to free chloride ions and negligible signals towards other interfering species.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116937297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

One Pot Synthesis of CuO-CuFe2O4@rGO Nanostructure with Synergistic Effect for Efficient Electrochemical Sensing Application of Paracetamol 一锅法合成具有协同效应的CuO-CuFe2O4@rGO纳米结构对扑热息痛的电化学传感应用

ECS Advances Pub Date : 2023-05-23 DOI: 10.1149/2754-2734/acd800

Jagdish C. Bhangoji, S. S. Kahandal, R. S. Patil, T. Lambat, Shirinaz I. Khan, G. Wadhava, S. Mahmood, S. Shendage

{"title":"One Pot Synthesis of CuO-CuFe2O4@rGO Nanostructure with Synergistic Effect for Efficient Electrochemical Sensing Application of Paracetamol","authors":"Jagdish C. Bhangoji, S. S. Kahandal, R. S. Patil, T. Lambat, Shirinaz I. Khan, G. Wadhava, S. Mahmood, S. Shendage","doi":"10.1149/2754-2734/acd800","DOIUrl":"https://doi.org/10.1149/2754-2734/acd800","url":null,"abstract":"In the present study, the facile and synergistic approach for electrochemical sensing of paracetamol (PA) drug was demonstrated by hydrothermally synthesized copper oxide-copper ferrite nanohybrid composite supported on reduced graphene oxide (CuO-CuFe2O4@rGO) glassy carbon electrode. The surface texture and structural information of the electrode material were examined by FE-SEM, HR-TEM, and X-ray diffraction techniques, whereas the electrochemical sensing application of paracetamol oxidation was investigated by amperometric method. The average crystallite size of CuO-CuFe2O4 was calculated from XRD data and found to be 35.45 nm. The fabricated sensor exhibited a higher sensitivity of 970.26 μA.mM−1.cm−2 along with a lower limit of detection (LOD) and limit of quantification (LOQ) of 7.0 μM and 25 μM, respectively, with a linear dynamic range of 10–1200 μM. Furthermore, the CuO-CuFe2O4@rGO modified sensor showed excellent anti-interferents ability, long-term stability and reproducibility towards electro-oxidation of paracetamol drug. Moreover, it can be efficiently applied for the analysis of paracetamol in biological samples. Finally, the synthesized nanocomposite material was validated to be a competent electrocatalyst for electrochemical sensing application of paracetamol.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"4 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133525159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Identification of Degradation Parameters in SOC Under Load and OCV Aging Approaches 负载下SOC退化参数辨识与OCV老化方法

ECS Advances Pub Date : 2023-05-15 DOI: 10.1149/2754-2734/acd565

A. Padinjarethil, A. Hagen

引用次数: 0

Rapid Preparation of All-In-One Compressible Capacitors with Flame Carbonized Melamine Foam for AC Line Filtering 火焰碳化三聚氰胺泡沫可压缩电容器的快速制备

ECS Advances Pub Date : 2023-05-15 DOI: 10.1149/2754-2734/acd566

Q. Yang, Pingping Yang, Yixing Yu, Hongyu Chen, Jie Ren, Cheng Huang, Jiale Xie

{"title":"Rapid Preparation of All-In-One Compressible Capacitors with Flame Carbonized Melamine Foam for AC Line Filtering","authors":"Q. Yang, Pingping Yang, Yixing Yu, Hongyu Chen, Jie Ren, Cheng Huang, Jiale Xie","doi":"10.1149/2754-2734/acd566","DOIUrl":"https://doi.org/10.1149/2754-2734/acd566","url":null,"abstract":"Melamine foam (MF) is a good candidate for electrochemical filter capacitors due to its 3D porous structure, flexibility, and nitrogen-containing property. However, traditional thermal carbonization would cause a severe loss of nitrogen and need several hours to perform the transition from melamine to carbon. Moreover, to construct all-in-one electrochemical capacitors, the nonconductive MF must be deposited a conductive layer on the surface of MFs. Herein, we developed a flame carbonization method to carbonize the MFs to an all-in-one structure in less than one minute. The carbonized MF exhibits 2.6 times higher nitrogen content than that of the traditional carbonized. MF-based all-in-one compressible electrochemical capacitors deliver excellent alternating current (AC) line filtering performance, such as a low phase angle of −83.1° at 120 Hz, a low resistance capacitance time constant of 157 μs, and a short relaxation time constant of 46 μs. The AC signal of 120 Hz, even a higher frequency of 2000 Hz, can be successfully converted into a stable direct current (DC) signal. Besides, the influence of electrolyte, compressive strain, and the thickness/carbonization time of MFs on the electrochemical performance has been studied. This work provides an ingenious design and effective preparation strategy for MFs-based all-in-one electrochemical capacitors.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121438038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Mechanisms of Copper Bipyridine Complexes in Dichloromethane and Water 铜联吡啶配合物在二氯甲烷和水中的电化学机理

ECS Advances Pub Date : 2023-05-11 DOI: 10.1149/2754-2734/acd466

Christian D. Haas, Andrew Lazicki, Emily Carroll, Emerson Tran Lam, Ryan Van Daele, John H. Leddy

{"title":"Electrochemical Mechanisms of Copper Bipyridine Complexes in Dichloromethane and Water","authors":"Christian D. Haas, Andrew Lazicki, Emily Carroll, Emerson Tran Lam, Ryan Van Daele, John H. Leddy","doi":"10.1149/2754-2734/acd466","DOIUrl":"https://doi.org/10.1149/2754-2734/acd466","url":null,"abstract":"Voltammetric mechanisms for copper bipyridine complexes are evaluated for Cu(bpy)3(PF6)2 in dichloromethane (DCM), Cu(bpy)3(ClO4)2 in water, and copper bipyridine complexes formed in situ from a stoichiometric 1:3 mix of Cu(II) and bpy in water. The mechanism for Cu(bpy)3(PF6)2 in aprotic DCM is a simple irreversible (slow) heterogeneous electron transfer, Eirrev , with a standard heterogeneous electron transfer rate of 6 × 10−4 cm s−1. For Cu(bpy)3(ClO4)2 in water near pH 6, the mechanism is a six species square scheme, with multiple chemical and electrochemical steps. Voltammetric morphologies for Cu(bpy)3(PF6)2 in DCM and Cu(bpy)3(ClO4)2 in water were evaluated by established diagnostics and modeled with digital simulations. Established diagnostics underrepresent the complexity of copper bipyridines in water. For the complexes formed in situ, the stoichiometric ratio is insufficient to form only Cu(bpy)3 2+, so an equilibrium model that characterizes speciation at given pH and electrode potentials is used. Solvent, pH, and speciation impact the observed voltammetry of copper bipyridine complexes.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116273127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Waste-to-Wealth: Wheat-Based Porous Electrodes for Electrochemical Energy Storage Devices 废物转化财富:用于电化学储能装置的小麦基多孔电极

ECS Advances Pub Date : 2023-05-11 DOI: 10.1149/2754-2734/acd43d

Hamidreza Parsimehr, Parya Kazemzadeh, A. Ehsani

{"title":"Waste-to-Wealth: Wheat-Based Porous Electrodes for Electrochemical Energy Storage Devices","authors":"Hamidreza Parsimehr, Parya Kazemzadeh, A. Ehsani","doi":"10.1149/2754-2734/acd43d","DOIUrl":"https://doi.org/10.1149/2754-2734/acd43d","url":null,"abstract":"Energy production/storage as one of the world’s leading issues has been widely studied. This significant problem can be solved by using disposable/low-cost biomass materials. Electrochemical energy storage (EES) devices including supercapacitors, rechargeable batteries, and hybrid EES devices have been extensively developed in recent years. The EES devices have been recognized as a proper answer to the energy storage problem in the world. Numerous studies have been accomplished to develop biomass-based and biochar-based EES devices to decrease environmental pollution and production costs. The most important part of the EES devices are electrodes including the cathode and anode. According to recent studies, biochar-based electrodes have considerable electrochemical properties. Wheat is one of the most important parts of the human diet. The wheat wastes have amazing electrochemical properties to be used as a precursor of electrochemical energy storage (EES) electrodes including supercapacitors, batteries, and hybrid EES devices. The benign/low-cost wheat wastes especially wheat straw and wheat husk have been used to fabricate wheat-based biochar materials. The electrochemical properties of the wheat-based biochar electrodes (cathode and anode) in the EES devices have determined that these benign/low-cost EES electrodes reduce production costs and obtain acceptable electrochemical performance and environmentally friendly procedures.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130973851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-Activated SiO2/C Nanocomposite from Silica-Rich Marine Mucilage for Supercapacitor Applications 超级电容器用富硅海洋胶浆制备的自活化SiO2/C纳米复合材料

ECS Advances Pub Date : 2023-05-10 DOI: 10.1149/2754-2734/acd405

Neriman Sinan Tatli, Mete Yilmaz, Ece Unur Yilmaz

{"title":"Self-Activated SiO2/C Nanocomposite from Silica-Rich Marine Mucilage for Supercapacitor Applications","authors":"Neriman Sinan Tatli, Mete Yilmaz, Ece Unur Yilmaz","doi":"10.1149/2754-2734/acd405","DOIUrl":"https://doi.org/10.1149/2754-2734/acd405","url":null,"abstract":"Bioresources are continually being explored as potential precursors for sustainable supercapacitor electrode materials. In this work, diatom-rich marine mucilage (MM) collected from the Marmara Sea, Turkey was used as a biomass source and converted to SiO2/Carbon nanocomposite (SiO 2 /C) through pyrolysis and acid etching. Diatom frustules acted as a highly porous silica source while algal organic matter delivered the carbonaceous part of the composite. The natural salts found in marine mucilage served as a self-activating agent and avoided the use of corrosive chemicals for the development of pores. The SiO 2 /C exhibited a competitive capacitance of 210 F g–1 at a current rate of 0.5 A g–1 in 1 M sodium sulfate (Na2SO4) aqueous electrolyte solution. The porous and durable silica skeleton improved capacitance by expanding the electrode/electrolyte interface, and the interconnected hierarchical pores ensured high electrochemical stability during long-term cycling. The mucilage-derived nanocomposite retained 80% and 70% of its capacitance after 4000 and 10,000 charge–discharge cycles, respectively. This work presents a potential solution for the management of marine mucilage by converting it into a high-value electrode material.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114080822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Biosensor Based on ds-DNA/N-G@CS/GCE for Highly Sensitive and Rapid Measurement of Antioxidant Activity 基于ds-DNA/N-G@CS/GCE的电化学生物传感器高灵敏、快速测定抗氧化活性

ECS Advances Pub Date : 2023-05-04 DOI: 10.1149/2754-2734/acd017

Bolu Sun, Yanmei Yang, Shixing Yu, Liangrong Bao, Hongxia Shi, Qiaoning Dang, Yuhong Liu, L. Yang, Qu-huan Ma, Xiaofeng Shi

{"title":"Electrochemical Biosensor Based on ds-DNA/N-G@CS/GCE for Highly Sensitive and Rapid Measurement of Antioxidant Activity","authors":"Bolu Sun, Yanmei Yang, Shixing Yu, Liangrong Bao, Hongxia Shi, Qiaoning Dang, Yuhong Liu, L. Yang, Qu-huan Ma, Xiaofeng Shi","doi":"10.1149/2754-2734/acd017","DOIUrl":"https://doi.org/10.1149/2754-2734/acd017","url":null,"abstract":"Antioxidants remove free radicals and inhibit the oxidation of oxygen-sensitive substances, which are of great significance in disease prevention and food preservative. Therefore, it is of great significance to establish a convenient, efficient and universal method for screening and evaluating antioxidant activity. In this study, Nitrogen-doped Graphene (N-G) with high conductivity and Chitosan (CS) with good film forming and stability were used as electrode substrate materials. And a ds-DNA/N-G@CS/GCE electrochemical biosensor for rapid evaluation of antioxidant activity was constructed by assembling ds-DNA and taking advantage of the signal difference between pre- and post-damage ds-DNA loading in Ru(NH3)6 3+ probe solution. N-G@CS with good electro-catalysis and high capacitance significantly improved the response signal of the sensor. At the same time, Square Wave Voltammetry (SWV) was used to optimize the conditions affecting the evaluation results of biosensors. The results showed that under the Fenton solution system with pH 7.0 and the ratio of Fe2+ to OH− 1:4, the biosensor has a high oxidation ds-DNA damage within 30 min The system can inhibit the damage of ds-DNA by adding antioxidants. Under optimized experimental conditions, composite yogurt and plain yogurt with weak antioxidant activity difference were evaluated by the constructed biosensor, and compared with L-ascorbic acid, the activity order was L-ascorbic acid > composite yogurt > plain yogurt. The results were consistent with the results of hydroxyl radical scavenging and ABTS+ radical scavenging experiments, and there was no significant difference between the three methods. This study not only provides a convenient and efficient method for the evaluation of antioxidant activity, but also provides strategies and technical support for the development of low-cost, highly sensitive and universal portable activity evaluation techniques.","PeriodicalId":338397,"journal":{"name":"ECS Advances","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125956788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Fabrication of Ideally Ordered Anodic Porous Alumina on Glass Substrates by Stamping Process Using Flexible Stamps 柔性冲压工艺在玻璃基板上制备理想有序阳极多孔氧化铝

ECS Advances Pub Date : 2023-05-03 DOI: 10.1149/2754-2734/acd207

Kenya Kato, T. Yanagishita

引用次数: 0