ChemElectroChem最新文献_第2页

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":"https://doi.org/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":"https://doi.org/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

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

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":"https://doi.org/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

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":"https://doi.org/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

The Electrochemical Characterization of Functionalized Isoindolinones 功能化异吲哚酮的电化学表征

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-05-27 DOI: 10.1002/celc.202500044

Daniel. E. Smith, Ashley J. Basson, Niamh J. Owen, Mark Potter, Mark G. McLaughlin, Kathryn E. Toghill

引用次数: 0

Electrochemistry and Antioxidant Activities of Substituted Furanyl Nitrone: The Role of the Nitro Group 取代呋喃基硝基的电化学及抗氧化活性：硝基的作用

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-05-26 DOI: 10.1002/celc.202500068

Danyelle Cândido Santos, Débora de Souza dos Santos Costa, Paulo R. R. Costa, Ayres Guimarães Dias, Messias de Oliveira Silva, Taualia Achira Aly, Vinícius Del Colle, Jadriane Almeida Xavier, Marília O. F. Goulart, Thaissa Lúcio Silva

{"title":"Electrochemistry and Antioxidant Activities of Substituted Furanyl Nitrone: The Role of the Nitro Group","authors":"Danyelle Cândido Santos, Débora de Souza dos Santos Costa, Paulo R. R. Costa, Ayres Guimarães Dias, Messias de Oliveira Silva, Taualia Achira Aly, Vinícius Del Colle, Jadriane Almeida Xavier, Marília O. F. Goulart, Thaissa Lúcio Silva","doi":"10.1002/celc.202500068","DOIUrl":"https://doi.org/10.1002/celc.202500068","url":null,"abstract":"This work compares electrochemical and antioxidant data for synthetic furfural-derived nitrone (LQB-109), the novel N-methyl-nitroaryl-furanyl-nitrone (LQB-569), and the parent aldehyde (5NBFAL). Cyclic voltammograms (CVs) are obtained on a glassy carbon electrode (GCE) in acetonitrile (MeCN) and 0.1 mol L−1 n-Bu4NPF6 versus Ag|AgCl|Cl−, to evaluate cathodic and anodic behavior and chemical processes. The CVs of LQB-109 display two irreversible cathodic waves at −2.04 V and − 2.19V, related to a four-electron reduction to hydroxylamine. Two anodic waves appeared at +1.32 V and +1.53 V. The first electron uptake for LQB-569 occurs in the nitroaromatic group, followed by reductions to give a more electrophilic nitroso, prone to dimerizing and forming reducible azoxy derivatives, along with nitrone reduction, in a 10-electron total process. One irreversible anodic wave at +1.45 V appears, related to the nitrone oxidation. The electrochemical oxidation profile can be correlated to antioxidant capacity (AO). The ability to scavenge 2,2-diphenil-1-picrylhydrazyl (DPPH)• radicals (% radical scavenging activity) and reduce ferric complexes (ferric-reducing antioxidant power) were used to assess. LQB-569 showed low AO, due to the presence of the electron-withdrawing group, reflecting the oxidative part of the CVs.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 13","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551295","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

Synthesis and Electrochemical Investigations of a Binuclear [FeFe]-Hydrogenase Mimic 双核[FeFe]-氢化酶模拟物的合成及电化学研究

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-05-24 DOI: 10.1002/celc.202500050

Benedikt Callies, Kai-Thorben Kuessner, Sven T. Stripp, Stephan Kupfer, Phil Köhler, Helmar Görls, Inke Siewert, Wolfgang Weigand

{"title":"Synthesis and Electrochemical Investigations of a Binuclear [FeFe]-Hydrogenase Mimic","authors":"Benedikt Callies, Kai-Thorben Kuessner, Sven T. Stripp, Stephan Kupfer, Phil Köhler, Helmar Görls, Inke Siewert, Wolfgang Weigand","doi":"10.1002/celc.202500050","DOIUrl":"https://doi.org/10.1002/celc.202500050","url":null,"abstract":"Herein, a [FeFe]-hydrogenase mimic with the benzene-1,2-dithiolato ligand bearing two amino groups in 4- and 5-position of the ligand is reported. The ligand synthesis is straight forward and accomplished in two steps. Detailed studies show that the implementation of the functional groups in the [FeFe]-hydrogenase mimic has marginal impact on the structural, thermodynamic properties, and catalytic performance in the electrochemical proton reduction reaction. However, the modification opens the way for a wide variety of functionalization in the ligand backbone, e.g., for applications in photo/electrocatalysis. Electrochemical investigations reveal that initial two electron reductions are followed by protonation by acetic acid forming an asymmetric diironhydride species. Further reduction of the hydride species and protonation leads to H2 formation. Utilizing foot of the wave analysis, a reaction rate of 2 × 108 s−1 m−1 for the H2 evolution step consisting of the reaction of the metal hydride species and the external acid has been determined. However, catalysis is limited by the formation of the hydride at a rate constant of about 4 × 104 s−1 m−1.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 12","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202500050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256577","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: Probing the Properties of Locally Formed Solid Electrolyte Interphases on Hard Carbon Anodes (ChemElectroChem 10/2025) 封面：探测硬碳阳极上局部形成的固体电解质界面的性质（ChemElectroChem 10/2025）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2025-05-24 DOI: 10.1002/celc.202581001

Dr. Salimeh Saleh, Dr. Sven Daboss, Tom Philipp, David Schäfer, Prof. Dr. Marcus Rohnke, Prof. Dr. Christine Kranz

引用次数: 0