ChemElectroChem最新文献_第10页

Covalent Organic Framework-Based Solid-State Electrolyte: Regulable Structure Promoting Lithium-Ion Transfer 基于共价有机框架的固态电解质：促进锂离子转移的可调节结构

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-12 DOI: 10.1002/celc.202500163

Shujing Liu, Miao Xu, Xing Chen

引用次数: 0

Electroenzymatic CO2 Reduction Using Formate Dehydrogenase: Direct and Mediated Catalysis 使用甲酸脱氢酶的电解法二氧化碳还原：直接和介导催化

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-12 DOI: 10.1002/celc.202500100

Navendu Paul, Isabel Moura, Luísa B. Maia, Cristina M. Cordas, Jose J. G. Moura

{"title":"Electroenzymatic CO2 Reduction Using Formate Dehydrogenase: Direct and Mediated Catalysis","authors":"Navendu Paul, Isabel Moura, Luísa B. Maia, Cristina M. Cordas, Jose J. G. Moura","doi":"10.1002/celc.202500100","DOIUrl":"10.1002/celc.202500100","url":null,"abstract":"The electrocatalytic reduction of carbon dioxide (CO2) to formate by the enzyme formate dehydrogenase (FDH) makes use of the enzyme's observed reversibility, offering a promising strategy for the mitigation of CO2 and the production of value-added compounds. To enhance the catalytic potential of Desulfovibrio desulfuricans FDH (DdFDH), a range of artificial and natural redox cofactors is investigated using electrochemical methods. These studies included direct (nonmediated) conditions and mediated conditions employing viologens (methyl and benzyl viologens), and small heme proteins (cytochromes). Methyl viologen acts as an efficient mediator for CO2 reduction, achieving a very high current density of 216 μA cm−2. The studies of the different small proteins, namely cytochrome split-soret (cyt SS), cytochrome c3 (cyt c3), and cytochrome c552 (cyt c552), allow the identification of the potential natural physiological partners. These isolated cytochromes, from the same organism, are electrochemically characterized, from which detailed redox processes are determined and later used as mediators to explore DdFDH catalytic activity in both formate oxidation and CO2 reduction. Best results are attained with cytochrome cyt SS and cyt c3, increasing the electrocatalytic activity for formate oxidation by 7.5 times and 5.8 times, respectively.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 15","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500100","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705089","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: Wireless Potentiometric Monitoring of Microbial Biofilm Formation: In Vitro and Ex Vivo Studies of Gram-Positive and Gram-Negative Bacteria (ChemElectroChem 11/2025) 封面：微生物生物膜形成的无线电位监测：革兰氏阳性和革兰氏阴性细菌的体外和离体研究（ChemElectroChem 11/2025）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-11 DOI: 10.1002/celc.202581101

Vladislav Genevskiy, Vivek Chaturvedi, Kristian Thulin, Khurram Usman, Elsa Westerlund, Per-Ola Önnervik, Maryam Mostajeran, Sergey Shleev

引用次数: 0

Front Cover: Graphene Derivatives as Efficient Transducing Materials for Covalent Immobilization of Biocomponents in Electrochemical Biosensors (ChemElectroChem 12/2025) 封面：石墨烯衍生物作为电化学生物传感器中生物组分共价固定的高效转导材料（ChemElectroChem 12/2025）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-11 DOI: 10.1002/celc.202581201

Petr Jakubec, David Panáček, Martin-Alex Nalepa, Marianna Rossetti, Ruslan Álvarez-Diduk, Arben Merkoçi, Majlinda Vasjari, Lueda Kulla, Michal Otyepka

引用次数: 0

High Sensitivity L-Cysteine Indium Telluriselenide Quantum Dot-Inspired Aptasensor for Interferon Gamma TB Biomarker 高灵敏度l -半胱氨酸碲化铟量子点启发的干扰素γ结核生物标志物适配体传感器

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-11 DOI: 10.1002/celc.202400654

Kaylin Cleo Januarie, Usisipho Feleni, Candice Cupido, Nelia Abraham Sanga, Rachel Fanelwa Ajayi, Emmanuel Iheanyichukwu Iwuoha, Marlon Oranzie, Jaymi Leigh January, Zandile Dennis Leve

{"title":"High Sensitivity L-Cysteine Indium Telluriselenide Quantum Dot-Inspired Aptasensor for Interferon Gamma TB Biomarker","authors":"Kaylin Cleo Januarie, Usisipho Feleni, Candice Cupido, Nelia Abraham Sanga, Rachel Fanelwa Ajayi, Emmanuel Iheanyichukwu Iwuoha, Marlon Oranzie, Jaymi Leigh January, Zandile Dennis Leve","doi":"10.1002/celc.202400654","DOIUrl":"10.1002/celc.202400654","url":null,"abstract":"Tuberculosis (TB) continues to be a significant contributor to global death tolls among infectious diseases. It can be diagnosed using certain cytokines, such as interferon-gamma (IFN-γ). Interferon-gamma is an essential component of the immune system's defense against pathogens which is known to be expressed in TB infection. This work involves the development of a quantum dot-sensitized electrochemical aptasensor for IFN-γ. The sensor system consists of gold disc electrode surface that was modified with novel L-cysteine-functionalized indium telluriselenide quantum dots (L-cysteine-InTeSe QD). Subsequently, the L-cysteine-InTeSe QDs are conjugated to an amine-terminated IFN-γ aptamer through a carbodiimide-mediated amide bond formation. The electrochemical responses of the IFN-γ aptasensor are studied by voltammetry. A linear calibration curve is generated for the concentration range studied (i.e., 10–21 pg mL−1 IFN-γ), and a limit of detection of 0.312 pg mL−1 is obtained. The QD aptasensor is able to accurately detect IFN-γ without interference from other substances. In a practical application using synthetic human serum, the QD aptasensor produced good detection recovery of 98–102%, highlighting its potential for diagnosing infectious diseases.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 15","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400654","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705133","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

An Alternative Mechanistic Paradigm for the Electrochemical C-Terminal Decarboxylation of Peptides 多肽c端电化学脱羧的另一种机制范式

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-11 DOI: 10.1002/celc.202500142

Adam J. Sowers, Kevin D. Moeller, Kim S. Halskov

{"title":"An Alternative Mechanistic Paradigm for the Electrochemical C-Terminal Decarboxylation of Peptides","authors":"Adam J. Sowers, Kevin D. Moeller, Kim S. Halskov","doi":"10.1002/celc.202500142","DOIUrl":"10.1002/celc.202500142","url":null,"abstract":"The C-terminal decarboxylation of peptides provides an important opportunity to synthesize modern peptide pharmaceuticals that contain C-terminal amides. This transformation can be achieved by electrochemical oxidation; however, the standard implementation depends on oxidation potential for selectivity which may represent a challenge when amino acid residues containing electroactive side chains are present. To address this limitation, an alternative mechanistic paradigm has been introduced for selective decarboxylation of a C-terminal carboxylate, one that relies on a chelation event. In a proof-of-principle experiment used to probe and define the viability of this mechanism, it is demonstrated that the combination of an iron mediator and a C-terminal glutamate residue can be used to conduct the reaction in the presence of the more electron-rich tyrosine residue frequently found in medicinally active peptides. Investigations into the reaction specifics and the scope/limitations provide key insights into the reaction mechanism and how such processes can be optimized. The success of the method highlighted here points to a more general binding-based approach to drive C-terminal decarboxylation that utilizes a functional group motif not possible at any other position in a peptide.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 14","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598645","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

Modification Mechanisms and Synergistic Effects of Nb/Al Codoping in High-Nickel Cathode Materials for Lithium-Ion Batteries 锂离子电池高镍正极材料中Nb/Al共掺杂的改性机理及协同效应

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-08 DOI: 10.1002/celc.202500125

Zailun Ma, Jiashu Yuan

{"title":"Modification Mechanisms and Synergistic Effects of Nb/Al Codoping in High-Nickel Cathode Materials for Lithium-Ion Batteries","authors":"Zailun Ma, Jiashu Yuan","doi":"10.1002/celc.202500125","DOIUrl":"10.1002/celc.202500125","url":null,"abstract":"Advanced medical imaging systems require exceptional reliability and extended service life. While high-nickel layered cathode materials (Li[NixCoyMn1−x−y]O2, Ni ≥ 80%) offer high energy density, their structural instability threatens critical medical operations. This study addresses the challenges of electrochemical performance and structural stability in high-nickel layered cathode materials. A codoping strategy using Nb5+ and Al3+ is employed to deeply explore the modification mechanisms and synergistic effects. The results indicate that Nb5+ doping induces a contraction of the primary particles, which enhances the crystal structure density and facilitates Li+ diffusion; however, it also increases Li+/Ni2+ cation mixing, potentially leading to irreversible capacity loss during the initial cycles. In contrast, the introduction of Al3+ effectively mitigates the cation mixing aggravated by Nb5+, maintaining the Li+/Ni2+ disorder within an optimal range. This adjustment significantly reduces electrode polarization during long-term cycling and prevents the formation of microcracks. Consequently, the codoped cathode half-cells retain 95.93% of their capacity after 200 cycles, while delivering a discharge capacity of 160.1 mAh g−1 at a 5 C rate. Moreover, both high-temperature and room-temperature performances are markedly improved. The synergistic effect of Nb5+ and Al3+ codoping not only stabilizes the layered structure but also enhances rate performance and cycle life.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 15","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500125","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705337","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

Macroporous Hollow-Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources 大孔中空纤维和磁可回收TiO2催化剂在染料废水资源化中的应用

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-05 DOI: 10.1002/celc.202500084

Xin Liu, Gonggang Liu, Shanshan Chang, Yuanyuan Liao, Jinbo Hu

{"title":"Macroporous Hollow-Fibrous and Magnetically Recoverable TiO2 Catalysts for Converting Dye Wastewater to Valuable Resources","authors":"Xin Liu, Gonggang Liu, Shanshan Chang, Yuanyuan Liao, Jinbo Hu","doi":"10.1002/celc.202500084","DOIUrl":"10.1002/celc.202500084","url":null,"abstract":"The photocatalytic TiO2 has been regarded as a promising catalyst of nonbiodegradable organic pollutants in wastewater. Resolving some issues of agglomeration, recoverability, and poor efficiency, an inorganic TiO2-based catalyst has been constructed by a template method, which picks out bamboo fibers originating from processing waste. Characterization of the hollow fibrous TiO2/Fe3O4 catalyst confirms the successful loading of Fe3O4 and TiO2, along with a well-developed macroporous structure and high porosity (67.46%). At a solar intensity of 1 kW/m2, when the amount of TiO2/Fe3O4 is 0.3 g and the amount of H2O2 added is 3 mL, its degradation effect of 88.36% on industrial dye wastewater is optimal. The high magnetic saturation strength (5.78 emu/g) endows TiO2/Fe3O4 with ultra-high magnetic properties. As expected, after 10 catalytic cycles, the average degradation rate of TiO2/Fe3O4 toward methylene blue (MB) (0.2 L, 10 mg/L) remains above 96.2%, indicating that TiO2/Fe3O4 has ultra-high recyclability and repeatability. Furthermore, the degradation kinetics analysis shows that TiO2/Fe3O4 exhibits complete degradation of MB within 1 h and the degradation follows quasi-primary kinetics (k = 06062 min−1, R2 = 0.99747). Free radical burst experiments also indicate that hydroxyl radicals are active species that may play a major role in the solar-photo-Fenton system.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 14","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598356","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

Graphene-Based in situ Electrochemical Plasmon Waveguide Resonance Sensor Incorporating a Polymer Layer 结合聚合物层的石墨烯原位电化学等离子体波导谐振传感器

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-04 DOI: 10.1002/celc.202500122

Robert Jungnickel, Kannan Balasubramanian

{"title":"Graphene-Based in situ Electrochemical Plasmon Waveguide Resonance Sensor Incorporating a Polymer Layer","authors":"Robert Jungnickel, Kannan Balasubramanian","doi":"10.1002/celc.202500122","DOIUrl":"https://doi.org/10.1002/celc.202500122","url":null,"abstract":"Surface plasmon resonance (SPR) sensing is a suitable analytical technique to obtain kinetic information about the solid–liquid interface. In the standard SPR configuration, a metallic structure is needed, and the sensitivity is limited to the region close to the metal surface. Hence, it is difficult to study electrochemical reactions free of the metal film. Here, the use of a polymer layer on the metal is proposed, which serves as a dielectric waveguide presenting additional modes due to plasmon waveguide resonance (PWR). This helps one to offset the analytical interface a few 100 nm away from the metal surface. For studying electrochemical reactions, a graphene sheet is incorporated as an electrode on top of the polymer waveguide, thereby completely decoupling the electrode from the plasmonic gold layer. As a proof-of-principle, the possibility of following the kinetics of nanoparticle growth and dissolution is demonstrated. Moreover, it is shown that the electrochemical PWR can be used to monitor the redox behavior of immobilized nanoparticles in situ during potential cycling. Although the chemical structural information is not obtained, the ability to extract in situ kinetic data will help us gather a deeper mechanistic understanding of active metal centers in the context of electrocatalysis.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 19","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228188","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

Electrolyte-Dependent Electrode Potentials in Lithium–Sulfur Batteries 锂硫电池中与电解质相关的电极电位

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-02 DOI: 10.1002/celc.202500109

Fritz Wortelkamp, Christian Wittekind, Lilli Busch, Ingo Krossing

{"title":"Electrolyte-Dependent Electrode Potentials in Lithium–Sulfur Batteries","authors":"Fritz Wortelkamp, Christian Wittekind, Lilli Busch, Ingo Krossing","doi":"10.1002/celc.202500109","DOIUrl":"10.1002/celc.202500109","url":null,"abstract":"Lithium–sulfur batteries are promising for future energy storage due to their high specific capacity. However, challenges like low cycling stability and the shuttle effect hinder their practical use. A better understanding of the underlying processes is crucial. This study examines the correlation between lithium potential (ELi) and sulfur reaction potentials, referenced against the ferrocenium/ferrocene couple as an (almost) solvent-independent reference. Sulfur reactions are divided into two main stages during discharge and charge. Most sulfur reactions show a good linear correlation with ELi (R2 up to 0.87), except for the initial reduction of S8 to Li2S8, which shows no significant correlation. This suggests electrolyte design should address individual sulfur reactions rather than treating them collectively. Additionally, the correlation between ELi and the Raman-active symmetric S–N–S stretching mode vs(SNS) in the Li[N(SO2CF3)2] electrolyte anion is analyzed across different electrolyte mixtures. A good linear correlation (R2 = 0.73) indicates that both the Raman peak position and ELi reflect the strength of the interaction between Li+ and the electrolyte solvent and hence the Li+ ion activity. These findings provide valuable insights for optimizing lithium–sulfur battery electrolytes.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 16","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500109","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144881021","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