ChemElectroChem最新文献_第7页

Effective Porous Filler Design for Streaming Potential-Driven Electropolymerization 流电位驱动电聚合的有效多孔填料设计

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-16 DOI: 10.1002/celc.202500181

Suguru Iwai, Ryota Kirino, Elena Villani, Kosuke Sato, George Hasegawa, Norio Ishizuka, Kimihiro Matsukawa, Ikuyoshi Tomita, Shinsuke Inagi

{"title":"Effective Porous Filler Design for Streaming Potential-Driven Electropolymerization","authors":"Suguru Iwai, Ryota Kirino, Elena Villani, Kosuke Sato, George Hasegawa, Norio Ishizuka, Kimihiro Matsukawa, Ikuyoshi Tomita, Shinsuke Inagi","doi":"10.1002/celc.202500181","DOIUrl":"10.1002/celc.202500181","url":null,"abstract":"Bipolar electrode (BPE) systems have been attracting increasing attention owing to their cost-effectiveness and wireless design. Recently, the concept of streaming potential-driven BPEs for the oxidative electropolymerization of aromatic monomers without the need for an electric power supply is reported. However, the previous system, which used cotton as a filler material, had limitations in inducing suitable potential differences and charge amounts. Herein, various electrolytes and filling materials for flow cells are investigated for generating streaming potential. The results demonstrate that the use of bicontinuous porous filler materials and electrolytes containing ammonium cations and small anions effectively induces high streaming potential values. Consequently, the monomer scope of the electropolymerization method is extended compared to that of the prototype cell. In addition, a divided flow cell is developed to overcome the limitations of the available reaction.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 18","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500181","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101153","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

Effect of Operating Temperature on Ni–Fe Alloy Nanostructured Electrodes for Alkaline Electrolyzer 工作温度对碱性电解槽用镍铁合金纳米电极的影响

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-16 DOI: 10.1002/celc.202500042

Alberto Affranchi, Roberto Luigi Oliveri, Sonia Longo, Gabriele Miccichè, Sonia Carbone, Francesca Bellomo, Salvatore Geraci, Bernardo Patella, Nadia Moukri, Giuseppe Aiello, Maurizio Cellura, Philippe Mandin, Myeongsub Kim, Rosalinda Inguanta

{"title":"Effect of Operating Temperature on Ni–Fe Alloy Nanostructured Electrodes for Alkaline Electrolyzer","authors":"Alberto Affranchi, Roberto Luigi Oliveri, Sonia Longo, Gabriele Miccichè, Sonia Carbone, Francesca Bellomo, Salvatore Geraci, Bernardo Patella, Nadia Moukri, Giuseppe Aiello, Maurizio Cellura, Philippe Mandin, Myeongsub Kim, Rosalinda Inguanta","doi":"10.1002/celc.202500042","DOIUrl":"10.1002/celc.202500042","url":null,"abstract":"Herein, the effect of operating temperature on alkaline electrolytic cells for hydrogen generation using nanostructured electrodes is studied. Nanostructured nickel–iron alloy electrodes are obtained by electrosynthesis in a template. These electrodes are characterized by a nanowire-like structure with a high active surface area and consequently a higher catalytic activity than non-nanostructured materials. The chemical and morphological features of nanostructured electrodes are evaluated by energy-dispersive spectroscopy, X-ray diffraction, and scanning electron microscopy analyses. The electrochemical behavior of the nanostructured electrodes is studied through different tests in alkaline solutions. Tests are performed at different temperatures, 25, 40, and 60 °C, to evaluate the performance in terms of hydrogen and oxygen production and to verify the medium-term stability under galvanostatic conditions. The electrodes demonstrate good stability over time without evident signs of performance decay. The performance of a homemade electrolyzer with nanostructured electrodes is also studied at different temperatures and under industrial operation conditions for 600 h. The environmental impacts through the application of life cycle assessment methodology are also evaluated.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 14","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598466","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

Lipophilic Resazurin in Bioelectrochemical Systems: Role in Regulating Carbon Metabolic Pathways 生物电化学系统中的亲脂性瑞祖林：在调节碳代谢途径中的作用

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-16 DOI: 10.1002/celc.202500092

Siyu Tan, Xiao Zhu, Xinxin Wang, Huangsheng Su, Zongqiang Zhu, Xiaobo Luo, John R. Reinfelder, Yundang Wu, Fangbai Li

{"title":"Lipophilic Resazurin in Bioelectrochemical Systems: Role in Regulating Carbon Metabolic Pathways","authors":"Siyu Tan, Xiao Zhu, Xinxin Wang, Huangsheng Su, Zongqiang Zhu, Xiaobo Luo, John R. Reinfelder, Yundang Wu, Fangbai Li","doi":"10.1002/celc.202500092","DOIUrl":"10.1002/celc.202500092","url":null,"abstract":"Lipophilic electron shuttles (ESs), such as phenazine and phenoxazine, can penetrate the outer membrane and enter the periplasmic space, mediating extracellular electron transfer reactions. This study investigates how lipophilic ESs (resazurin, a phenoxazine) regulate carbon metabolic pathways in bioelectrochemical systems using Shewanella oneidensis MR-1 as a model organism. Through the analysis of acetate yield, CO2 production, coulombic efficiency, and other parameters, it is found that resazurin increases coulombic efficiency (26% vs 17% for anthraquinone-2,6-disulfonic acid [AQDS]) and reduces acetate yield (82% vs 90% for AQDS) while slightly increasing CO2 production (13.1% vs 11.8% for AQDS), indicating a shift in carbon metabolism. Transcriptome analysis reveals significant upregulation of genes involved in the NADH-dependent metabolic pathway (e.g., nuoHIJKLMN) and ATP synthesis (atpABDEFGH) under resazurin conditions. Mutant strains lacking key genes in oxidative phosphorylation (Δatp) or substrate-level phosphorylation (Δack&pta) further confirm the regulatory role of lipophilic shuttles. The study proposes that lipophilic ESs penetrate the periplasm, altering the redox state of inner-membrane quinones and activating the NADH-dependent metabolic pathway via the Arc system. This mechanism enhances TCA cycle activity and overall lactate metabolic efficiency. The findings provide insights into microbial carbon metabolic regulation and offer strategies for optimizing bioelectrochemical systems for bioremediation.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 14","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598464","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

Surface Acidity of Basic Oxides: The Case Study of Solvated ZnO from Density Functional Theory-Based Molecular Dynamics Simulations 碱性氧化物的表面酸度：以密度泛函理论为基础的分子动力学模拟为例研究溶剂化氧化锌

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-06-12 DOI: 10.1002/celc.202500121

Aishwarya Sudhama, Chao Zhang

引用次数: 0

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

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