ChemElectroChem最新文献_第10页

Design of an Electrochemical Device for the Detection of Alkaline Phosphatase Inhibitors in Seawater 设计用于检测海水中碱性磷酸酶抑制剂的电化学装置

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-18 DOI: 10.1002/celc.202400271

María J. Sáenz-Espinar, Salma Hafed-Khatiri, David Salinas-Torres, Francisco Montilla, Francisco Huerta

{"title":"Design of an Electrochemical Device for the Detection of Alkaline Phosphatase Inhibitors in Seawater","authors":"María J. Sáenz-Espinar, Salma Hafed-Khatiri, David Salinas-Torres, Francisco Montilla, Francisco Huerta","doi":"10.1002/celc.202400271","DOIUrl":"10.1002/celc.202400271","url":null,"abstract":"The present contribution describes an electrochemical system for the detection of alkaline phosphatase (ALP) enzyme inhibitors in seawater medium. Fluorescence spectroscopy and thermal unfolding results suggest that the state of free ALP is affected in this medium, yet the protein remains active. The enzyme activity can be evaluated using hydroquinone diphosphate as the substrate, with hydroquinone as the electrochemically monitored product. It has been demonstrated that encapsulation in conventional and organic modified silica matrices maintains ALP integrity, although diffusion across the formed monoliths hinders the electrochemical response. ALP@Phenyl-modified silica exhibits the best performance due to higher affinity between substrate molecules and aromatic moieties and, probably, to larger pore size. This electrochemical system can detect and quantify calyculin A in seawater at sub-nanomolar concentrations and it can also be employed for the development of electrochemical biosensors tailored for the marine environment.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 16","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400271","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141744436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Conducting Nickel Hydroxide Thin Film on Molybdenum Disulfide – Reduced Graphene Oxide Composite Electrode for Simultaneous Detection of Uric Acid, Dopamine and Ascorbic Acid 二硫化钼-还原石墨烯氧化物复合电极上的导电氢氧化镍薄膜用于同时检测尿酸、多巴胺和抗坏血酸

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-18 DOI: 10.1002/celc.202400149

Dr. Charles Luhana, Prof. Philani Mashazi

{"title":"Conducting Nickel Hydroxide Thin Film on Molybdenum Disulfide – Reduced Graphene Oxide Composite Electrode for Simultaneous Detection of Uric Acid, Dopamine and Ascorbic Acid","authors":"Dr. Charles Luhana, Prof. Philani Mashazi","doi":"10.1002/celc.202400149","DOIUrl":"10.1002/celc.202400149","url":null,"abstract":"Herein we report the fabrication of a simple electrochemical sensor based on an electrode containing reduced graphene oxide and molybdenum disulphide (RGO/MoS2) as a conducting film onto the glassy carbon electrode (GCE) via a drop dry method to form GCE-RGO/MoS2. The surface (GCE-RGO/MoS2) was further modified with nickel hydroxide thin film using electrodeposition method to form GCE-RGO/MoS2/Ni(OH)2. The materials and modification steps were thoroughly characterized using microscopy and spectroscopy methods. The composite electrode, GCE-RGO/MoS2/Ni(OH)2, showed excellent electrocatalytic potential separation for the detection of dopamine, uric acid, and ascorbic acid. The electrocatalytic oxidation peak potentials were at 3 mV, 157 mV and 303 mV for AA, DA and UA, respectively. The composite electrode was also selective towards the determination of ascorbic acid (AA), dopamine (DA), uric acid (UA), and simultaneously in mixture of analytes. The low detection limits for AA, DA and UA were 1.17 μM, 0.15 μM and 1.15 μM, respectively. The composite electrode was applied for the detection of AA, DA and UA in spiked newborn calf serum samples with high percentage recoveries ranging from 96.6–100.8 % for AA, 92.8–104.2 % for DA and 99.4–102.3 % for UA.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 16","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400149","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141744437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Unsupervised Machine Learning-Derived Anion-Exchange Membrane Polymers Map: A Guideline for Polymers Exploration and Design 无监督机器学习得出的阴离子交换膜聚合物图谱：聚合物探索与设计指南

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-15 DOI: 10.1002/celc.202400252

Yin Kan Phua, Nana Terasoba, Prof. Manabu Tanaka, Prof. Tsuyohiko Fujigaya, Prof. Koichiro Kato

{"title":"Unsupervised Machine Learning-Derived Anion-Exchange Membrane Polymers Map: A Guideline for Polymers Exploration and Design","authors":"Yin Kan Phua, Nana Terasoba, Prof. Manabu Tanaka, Prof. Tsuyohiko Fujigaya, Prof. Koichiro Kato","doi":"10.1002/celc.202400252","DOIUrl":"https://doi.org/10.1002/celc.202400252","url":null,"abstract":"Although anion-exchange membranes (AEMs) are commonly used in fuel cells and water electrolyzers, their widespread commercialization is hindered by problems such as low anion conductivity and durability. Moreover, the development of high-performance AEMs remains complex and time consuming. Here, we address these challenges by proposing an innovative approach for the efficient design and screening of AEM polymers using unsupervised machine learning. Our model, which combines principal component analysis with uniform manifold approximation and projection, generates an intuitive map that clusters AEM polymers based on structural similarities without any predefined knowledge regarding anion conductivity or other experimentally derived variables. As a powerful navigation tool, this map provides insights into promising main-chain structures, such as poly(arylene alkylene)s with consistently high conductivity and polyolefins with exceptional performance depending on the substituent. Furthermore, assisted by key molecular descriptors, inverse analysis with this model allows targeted design and property prediction before synthesis, which will significantly accelerate the discovery of novel AEM polymers. This work represents a paradigm shift not only in AEM research but also generally in materials research, moving from black-box predictions toward interpretable guidelines that foster collaboration between researchers and machine learning for efficient and informed material development.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 14","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400252","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141631185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Metal Alloy-Functionalized 3D-Printed Electrodes for Nitrate-to-Ammonia Conversion in Zinc-Nitrate Batteries 用于硝酸锌电池中硝酸-氨转化的金属合金功能化三维打印电极

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-15 DOI: 10.1002/celc.202400291

Dr. Si Liu, Yupeng Zhao, Zhengfan Chen, Dr. Dandan Gao, Fan Feng, Tobias Rios-Studer, Dr. Joachim Bansmann, Johannes Biskupek, Prof. Dr. Ute Kaiser, Dr. Rongji Liu, Prof. Dr. Carsten Streb

{"title":"Metal Alloy-Functionalized 3D-Printed Electrodes for Nitrate-to-Ammonia Conversion in Zinc-Nitrate Batteries","authors":"Dr. Si Liu, Yupeng Zhao, Zhengfan Chen, Dr. Dandan Gao, Fan Feng, Tobias Rios-Studer, Dr. Joachim Bansmann, Johannes Biskupek, Prof. Dr. Ute Kaiser, Dr. Rongji Liu, Prof. Dr. Carsten Streb","doi":"10.1002/celc.202400291","DOIUrl":"10.1002/celc.202400291","url":null,"abstract":"Electrocatalytic nitrate reduction is a promising approach to remove harmful nitrate and produce ammonia in aqueous media. Here, we demonstrate how 3D printed polymer electrodes can be electroless plated with a bimetallic NiCu alloy film suitable for sustained nitrate-to-ammonia reduction. Characterization by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning/transmission electron microscopy and energy-dispersive X-ray spectroscopy indicate that the electrode has a two-layer structure consisting of polymer/ coating layer of metal alloys. The composite electrode shows high-performance in the nitrate-to-ammonia electroreduction, giving NH3 Faradaic efficiencies of up to 83 % and NH3 yield rates up to 860 μg/(h cm2) at −0.38 V vs. RHE. We show that the electrode can easily be integrated into a Zn-nitrate battery, giving a power density of 3.8 mW cm−2 with continuous NH3 production. The system combines three productive outputs, that is removal of nitrate pollutants, synthesis of valuable ammonia and generation of “green” electricity.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 15","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400291","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141646980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Front Cover: Recent Progress of In-Depth Analysis Techniques for Si Anodes in Sulfide-Based All-Solid-State Batteries: A Concise Overview and Future Perspective (ChemElectroChem 14/2024) 封面：硫化物全固态电池中硅阳极深度分析技术的最新进展：简明概述与未来展望（ChemElectroChem 14/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-15 DOI: 10.1002/celc.202481401

S. Jayasubramaniyan, Seokjin Kim, Minseok Ko, Jaekyung Sung

引用次数: 0

Cover Feature: Unsupervised Machine Learning-Derived Anion-Exchange Membrane Polymers Map: A Guideline for Polymers Exploration and Design (ChemElectroChem 14/2024) 封面特征：无监督机器学习推导的阴离子交换膜聚合物图谱：聚合物探索和设计指南（ChemElectroChem 14/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-15 DOI: 10.1002/celc.202481402

Yin Kan Phua, Nana Terasoba, Prof. Manabu Tanaka, Prof. Tsuyohiko Fujigaya, Prof. Koichiro Kato

引用次数: 0

Commercialization Efforts of Capacitive Deionization Technology in Water Treatment Processes 水处理工艺中电容式去离子技术的商业化努力

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-15 DOI: 10.1002/celc.202400277

Bei Li, Chang Tan, Kang Sun, Steven Boles, Ao Wang, Tianye Zheng

引用次数: 0

Polyester-Polycarbonate Polymer Electrolytes Beyond LiFePO4: Influence of Lithium Salt and Applied Potential Range 超越 LiFePO4 的聚酯-聚碳酸酯聚合物电解质：锂盐和应用电位范围的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-12 DOI: 10.1002/celc.202400354

Isabell L Johansson, Rassmus Andersson, Johan Erkers, Daniel Brandell, Jonas Mindemark

{"title":"Polyester-Polycarbonate Polymer Electrolytes Beyond LiFePO4: Influence of Lithium Salt and Applied Potential Range","authors":"Isabell L Johansson, Rassmus Andersson, Johan Erkers, Daniel Brandell, Jonas Mindemark","doi":"10.1002/celc.202400354","DOIUrl":"10.1002/celc.202400354","url":null,"abstract":"Rechargeable polymer-based solid-state batteries with metallic lithium anodes and LiNixMnyCo1−x−yO2 (NMC)-based cathodes promise safer high-energy-density storage solutions than existing lithium-ion batteries, but have shown challenging to realize. The failure mechanisms that have been suggested for these battery cells have mostly been related to the use of a metallic lithium anode and formation of dendrites during cycling. Here, we approach the issue of using solid polymer electrolytes (SPEs) vs. NMC cathodes by employing a range of materials based on poly(ϵ-caprolactone-co-trimethylene carbonate) (PCL-PTMC) with different salts under various cycling conditions. It is seen that although the ionic conductivity of the electrolyte can be improved by exchanging the lithium salt, it does not immediately correlate to better cycling performance. However, increasing the temperature during battery cycling to improve the ion transport kinetics lowers the polarization of the battery cell and full capacity can be achieved at an upper voltage cut-off that is appropriate for the polymer electrolyte. For these electrolytes, the limit is demonstrated to be 4.4 V vs. Li+/Li, and cycling with NMC-111 cathodes is thereby possible provided that the upper cut-off is limited to below this limit.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 15","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400354","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Exploring Impurity Effects and Catalyst Surface Features in Furfural Electroreduction for Jet Fuel Precursor Production: Experimental and Molecular Dynamics Insights 探索用于生产喷气燃料前体的糠醛电还原中的杂质效应和催化剂表面特征：实验和分子动力学见解

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-12 DOI: 10.1002/celc.202400336

Sahar Rabet, Willi Tobaschus, Gaseng Chung, Dr. Thomas Gimpel, Prof. Dr. Gabriele Raabe, Prof. Dr. Daniel Schröder, Dr. Balakrishnan Munirathinam

{"title":"Exploring Impurity Effects and Catalyst Surface Features in Furfural Electroreduction for Jet Fuel Precursor Production: Experimental and Molecular Dynamics Insights","authors":"Sahar Rabet, Willi Tobaschus, Gaseng Chung, Dr. Thomas Gimpel, Prof. Dr. Gabriele Raabe, Prof. Dr. Daniel Schröder, Dr. Balakrishnan Munirathinam","doi":"10.1002/celc.202400336","DOIUrl":"10.1002/celc.202400336","url":null,"abstract":"This research investigates the impact of laser-structuring of lead electrodes on the selectivity and production rate of hydrofuroin, a valuable jet fuel precursor derived from furfural (FF). Laser structuring of electrodes led to a slight enhancement in hydrofuroin selectivity, along with an improved production rate, suggesting promising advancements in electrosynthesis methodologies. The addition of acetic acid as an impurity did not significantly affect the selectivity or the production rate. This finding indicates that the catalytic activity of the electrode surface was not diminished by this impurity. Analysis via high-performance liquid chromatography revealed the presence of two isomers of hydrofuroin, indicating a complex reaction pathway. Combined experimental and molecular dynamics simulations indicated inner sphere adsorption of FF and H+ ions and outer sphere dimerization reaction to form hydrofuroin. These findings offer insights into surface morphology, adsorption, and reaction pathways, guiding future optimization of catalytic systems for sustainable chemical synthesis.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 15","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400336","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Development of a Co3O4/rGO Modified Electrochemical Sensor for Highly Sensitive Riboflavin Detection 开发用于高灵敏核黄素检测的 Co3O4/rGO 改性电化学传感器

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-07-11 DOI: 10.1002/celc.202400290

Dr. Gloria Ebube Uwaya, Prof. Praveen Kumar Sappidi, Krishna Bisetty

{"title":"Development of a Co3O4/rGO Modified Electrochemical Sensor for Highly Sensitive Riboflavin Detection","authors":"Dr. Gloria Ebube Uwaya, Prof. Praveen Kumar Sappidi, Krishna Bisetty","doi":"10.1002/celc.202400290","DOIUrl":"10.1002/celc.202400290","url":null,"abstract":"The monitoring of antioxidants is crucial to prevent damage caused by reactive oxygen species (ROS). In this study, we introduce an innovative electrochemical sensor tailored for detecting riboflavin (RF), a powerful antioxidant. The sensor was developed by modifying a gold electrode (AuE) with cobalt oxide (Co3O4) and reduced graphene oxide (rGO). The resulting nanocomposite-modified electrode (AuE/Co3O4-rGO) exhibited a substantial surface area of 0.41 cm2 in the redox probe, leading to an enhanced RF peak characterized by remarkably low charge transfer resistance (1.61 KΩ) and a high exchange current density (18.6 μA/cm2). Under optimized conditions, the sensor achieved a limit of detection (LOD) for RF at 1.30 μM, over a concentration range of 6.5–42.2 μM. These results highlight the sensor's potential applicability in real-world scenarios, including the analysis of milk and pharmaceutical samples. A kinetics study revealed that the electrochemical reaction involving RF is adsorption-controlled, emphasising the critical role of surface interactions. The modified electrode's interaction with RF significantly influences overall reaction kinetics. These findings were further supported by density functional theory (DFT) calculations and molecular simulations. Our nanocomposite-modified electrode provides valuable insights into the atomistic interactions governing sensor performance, advancing the field of electrochemical sensing for antioxidants like riboflavin.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 15","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400290","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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