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Photoelectrochemical Nitrate Reduction to Ammonia: Materials, Methods, and Metrics 光电化学硝酸还原为氨:材料、方法和指标
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-26 DOI: 10.1002/celc.70295
Elan D. R. Mistry, Anna Kowalska, Roel van de Krol, Alexander J. E. Rettie
{"title":"Photoelectrochemical Nitrate Reduction to Ammonia: Materials, Methods, and Metrics","authors":"Elan D. R. Mistry,&nbsp;Anna Kowalska,&nbsp;Roel van de Krol,&nbsp;Alexander J. E. Rettie","doi":"10.1002/celc.70295","DOIUrl":"https://doi.org/10.1002/celc.70295","url":null,"abstract":"<p>Ammonia is a crucial chemical feedstock, and its production is a major contributor to greenhouse gas emissions. Electrochemical approaches offer greener routes to ammonia synthesis, but direct nitrogen fixation remains highly challenging. An alternative strategy is the reduction of nitrate, a pollutant commonly found in wastewater, into ammonia and related products. When coupled with light-absorbing materials, this process can be driven photoelectrochemically, enabling modular systems that simultaneously recover waste nitrogen and generate valuable chemicals. In this review, we critically assess the thermodynamic framework underpinning nitrate reduction, clarify reported redox potentials and reaction pathways, examine analytical methodologies for nitrogen product quantification, and summarize the emerging materials and device architectures for (photo)electrocatalytic nitrate reduction. Finally, we provide recommendations to improve experimental standardization and accelerate progress in the field.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70295","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149259401","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
Selenium-Induced Interplay Between Processing, Phase Stability, and Hydrogen Evolution in Multicomponent Pentlandites 硒诱导的多组分Pentlandites加工、相稳定性和氢演化之间的相互作用
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-23 DOI: 10.1002/celc.70335
Maciej Kubowicz, Miłosz Kożusznik, Piotr Rusiniak, Joanna Klich-Kafel, Mathias Smialkowski, Ulf-Peter Apfel, Andrzej Mikuła
{"title":"Selenium-Induced Interplay Between Processing, Phase Stability, and Hydrogen Evolution in Multicomponent Pentlandites","authors":"Maciej Kubowicz,&nbsp;Miłosz Kożusznik,&nbsp;Piotr Rusiniak,&nbsp;Joanna Klich-Kafel,&nbsp;Mathias Smialkowski,&nbsp;Ulf-Peter Apfel,&nbsp;Andrzej Mikuła","doi":"10.1002/celc.70335","DOIUrl":"https://doi.org/10.1002/celc.70335","url":null,"abstract":"<p>Hydrogen evolution reaction (HER) performance of selenium-rich multicomponent pentlandites was investigated using the Co<sub>9<i>−x</i><i>−y</i></sub>Fe<sub><i>x</i></sub>Ni<sub><i>y</i></sub>S<sub>4</sub>Se<sub>4</sub> series prepared as powders, as-cast ingots, and induction-hot-pressed pellets. Structural, electrochemical, spectroscopic, and density functional theory analyses were combined to establish composition-structure–activity relationships. Selenium extends the single-phase range after synthesis but promotes partial phase separation during processing, particularly in Fe-rich compositions. Although the effect of cationic composition on HER performance is comparatively weak within the investigated Se-rich series, making the catalytic response increasingly dependent on electrode architecture and phase stability, the best HER performance across all material forms is consistently near the equimolar composition but shifted toward the Fe─Co-rich region, whereas Ni-rich compositions remain less active. Fe-rich pellets show the highest activity (<i>η</i><sub>20</sub> = 200 mV) together with pronounced surface reconstruction and preferential iron dissolution, while compositions closer to the equimolar region exhibit higher overpotentials (<i>η</i><sub>20</sub> = 251–256 mV) with greater stability, revealing a composition-dependent balance between activity and structural stability. Calculations indicate that selenium shifts the d-band center toward the Fermi level and strengthens hydrogen adsorption, contributing to sluggish HER kinetics. Overall, selenium suppresses the beneficial activation characteristic of sulfur-rich systems and fundamentally changes the factors governing HER performance, making it increasingly dependent on phase stability and electrode architecture.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70335","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258881","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
Ag/Ti Electrodes for Electrochemical Nitrate Reduction: Revealing Highly Effective Interfaces by In-Situ Electrochemical Mass Spectrometry Ag/Ti电极用于电化学还原硝酸盐:原位电化学质谱法揭示高效界面
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-23 DOI: 10.1002/celc.70261
Ainoa Paradelo Rodríguez, Alex Kotiagin, Guido Mul, Bastian T. Mei
{"title":"Ag/Ti Electrodes for Electrochemical Nitrate Reduction: Revealing Highly Effective Interfaces by In-Situ Electrochemical Mass Spectrometry","authors":"Ainoa Paradelo Rodríguez,&nbsp;Alex Kotiagin,&nbsp;Guido Mul,&nbsp;Bastian T. Mei","doi":"10.1002/celc.70261","DOIUrl":"https://doi.org/10.1002/celc.70261","url":null,"abstract":"<p>The electrochemical reduction of nitrate to hydroxyl amine or ammonia is a prominent means to effectively valorize agricultural effluent emissions. We demonstrate that bimetallic electrodes, composed of Ag nanoparticles deposited on Ti metal, exhibit a pronounced synergy in nitrate reduction in acidic electrolyte. This is evidenced by in-situ electrochemical mass spectrometry (EC-MS), showing NO evolution in a complex potential-dependent profile at lower onset potentials compared to single metal Ag or Ti electrodes. Furthermore, liquid phase analysis shows a significant Faradaic efficiency to hydroxylamine for Ag/Ti electrodes, even at potentials above 0 V<sub>RHE</sub>, i.e., requiring at least a 200–300 mV lower overpotential than necessary for the single metal electrodes. We discuss favorable NO and hydroxylamine formation to be occurring on highly effective Ag/Ti interfaces. This work highlights the importance of interfaces and suggests that optimization of (Ag/Ti) bimetallic electrodes appears to be a valuable means to develop high performance electrodes for the reduction of nitrate in acidic conditions.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70261","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258869","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
Mesostructure Engineering of Copper Catalyst Layers for Enhanced Ethylene Production in Electrochemical Reduction of Carbon Dioxide 电化学还原二氧化碳制乙烯用铜催化剂层的介观结构工程
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-22 DOI: 10.1002/celc.70334
Yuki Kono, Keisuke Obata, Satoshi Kuramochi, Kazuhiro Takanabe
{"title":"Mesostructure Engineering of Copper Catalyst Layers for Enhanced Ethylene Production in Electrochemical Reduction of Carbon Dioxide","authors":"Yuki Kono,&nbsp;Keisuke Obata,&nbsp;Satoshi Kuramochi,&nbsp;Kazuhiro Takanabe","doi":"10.1002/celc.70334","DOIUrl":"https://doi.org/10.1002/celc.70334","url":null,"abstract":"<p>To realize efficient CO<sub>2</sub> electroreduction, it is important to regulate “beyond catalyst” factors, including the diffusional contribution, which reflects local partial pressures of the CO<sub>2</sub> reactant and the key intermediate, CO, at the three-dimensional porous electrode under industrially relevant conditions (e.g., at current density exceeding 200 mA cm<sup>−2</sup>). Structural parameters of the catalyst layers, such as porosity, thickness, and pore size, play a decisive role in determining selectivity and CO<sub>2</sub> conversion rates, as they directly control mass transport within the electrode. This study systematically investigates the impact of the mesostructure of Cu catalyst layers originating from CuO<sub><i>x</i></sub> precursor nanoparticles with flake-, leaf-, and sphere-like morphologies, as well as their combinatorial assemblies. The maximum CO<sub>2</sub> conversion rate and CO<sub>2</sub> electroreduction selectivity varied greatly with catalyst particle morphology and mesoscopic catalyst-layer properties, including void architectures and pathways for gaseous molecules. Even with Cu alone, variations in electrode mesostructure substantially modulate CO<sub>2</sub> mass transfer and local CO concentration, highlighting the critical role of mesoscale architecture in determining CO<sub>2</sub> reduction kinetics and selectivity. Based on these insights, we developed a tandem catalyst layer to improve ethylene productivity.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70334","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258645","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
Atomic Layer Deposition for Water Electrolysis Electrocatalysts: From Atomic-Scale Control to Electrode Engineering 水电解电催化剂的原子层沉积:从原子尺度控制到电极工程
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-21 DOI: 10.1002/celc.70328
Esenina Stroka, Laura Borgese
{"title":"Atomic Layer Deposition for Water Electrolysis Electrocatalysts: From Atomic-Scale Control to Electrode Engineering","authors":"Esenina Stroka,&nbsp;Laura Borgese","doi":"10.1002/celc.70328","DOIUrl":"https://doi.org/10.1002/celc.70328","url":null,"abstract":"<p>Atomic layer deposition (ALD) has emerged as a powerful fabrication strategy for the design of advanced electrocatalysts for water electrolysis. Owing to its sequential self-limiting surface reactions, ALD enables atomic-scale control over film thickness, composition, morphology, and interface structure, while simultaneously providing highly conformal coatings on complex and porous substrates. These characteristics make ALD particularly attractive for engineering electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), where catalyst utilization, stability, and interface properties critically influence electrochemical performance. Beyond catalyst synthesis, ALD has also emerged as a powerful platform for disentangling structure-activity-stability relationships in electrocatalysis. This review discusses recent advances in ALD-enabled electrocatalyst fabrication for water electrolysis, with emphasis on noble-metal and earth-abundant catalyst systems, including transition-metal oxides, sulfides, and phosphides. Attention is given to the role of ALD in controlling catalyst dispersion, stabilizing active phases, tuning oxidation states, and engineering catalyst–support interactions. In addition, recent developments in interface engineering, ultrathin overlayers, and phase-controlled oxide systems are highlighted. Finally, current limitations associated with scalability, throughput, and processing cost are discussed together with future perspectives involving spatial ALD (SALD), plasma-enhanced ALD (PEALD), and operando characterization approaches for next-generation water electrolysis technologies.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70328","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258453","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
Composition-Dependent Solvation in Low-Concentration Multi-Salt DME Electrolytes: Correlations With Lithium Deposition and Interfacial Evolution 低浓度多盐二甲醚电解质中组分依赖的溶剂化:与锂沉积和界面演化的关系
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-21 DOI: 10.1002/celc.70331
Andrea Gentile, Margherita Moreno, Mauro Falconieri, Laure Monconduit, Lorenzo Stievano, Sergio Brutti
{"title":"Composition-Dependent Solvation in Low-Concentration Multi-Salt DME Electrolytes: Correlations With Lithium Deposition and Interfacial Evolution","authors":"Andrea Gentile,&nbsp;Margherita Moreno,&nbsp;Mauro Falconieri,&nbsp;Laure Monconduit,&nbsp;Lorenzo Stievano,&nbsp;Sergio Brutti","doi":"10.1002/celc.70331","DOIUrl":"https://doi.org/10.1002/celc.70331","url":null,"abstract":"<p>Lithium metal battery behavior is strongly influenced by the electrolyte environment from which the solid–electrolyte interphase develops, yet the effects of combining anions in dilute multi-salt formulations remain incompletely understood. Combinations of LiFSI, LiTFSI, and LiNO<sub>3</sub> in DME, at a total Li<sup>+</sup> concentration of 1 mol kg<sup>−1</sup>, were investigated using complementary spectroscopy, electrochemistry, and microscopy. Raman and <sup>1</sup>H/<sup>7</sup>Li NMR spectroscopy reveal composition-dependent changes in imide-anion association, DME coordination-sensitive spectral features, and the average Li<sup>+</sup> environment. These changes are accompanied by interfacial impedance responses and lithium deposit morphologies. Most notably, all nitrate-containing formulations show improved preservation of a lithium reservoir formed on Cu, sustaining 80–86 reversible cycles with average Coulombic efficiencies close to 99%, while displaying limited impedance evolution and more continuous deposits. Within this nitrate-containing series, FSI and TFSI produce distinct spectroscopic and interfacial responses, even though a ranking in reservoir reversibility cannot be established. TFSI is shifted predominantly toward noncontact environments upon nitrate addition, whereas FSI retains a substantial contribution from contact-associated configurations. The combined results demonstrate that multi-salt electrolytes cannot be described as simple superpositions of their single-salt components and support a working interpretation in which the anion composition modulates the prereduction Li<sup>+</sup> solvation ensemble and subsequent interfacial evolution.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70331","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258321","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
Microwave-Assisted Leaching and Mixed Oxalates Precipitation as Closed-Loop NMC532 Recycling Process 微波辅助浸出和混合草酸盐沉淀闭环NMC532回收工艺
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-21 DOI: 10.1002/celc.70325
Cristina Gatti, Maria Giuseppina Motta, Mahnoor Khan, Emilio Pafumi, Chiara Ferrara
{"title":"Microwave-Assisted Leaching and Mixed Oxalates Precipitation as Closed-Loop NMC532 Recycling Process","authors":"Cristina Gatti,&nbsp;Maria Giuseppina Motta,&nbsp;Mahnoor Khan,&nbsp;Emilio Pafumi,&nbsp;Chiara Ferrara","doi":"10.1002/celc.70325","DOIUrl":"https://doi.org/10.1002/celc.70325","url":null,"abstract":"<p>This work aims to advance the research on microwave (MW)-assisted hydrometallurgical recycling of Li(Ni/Mn/Co)O<sub>2</sub> (NMC) cathode materials, with a special focus on leaching and mixed oxalate precipitation. Traditional (hot plate and magnetic stirring) setup and MW-assisted one have been systematically compared across different organic-based leaching recipes. Pristine NMC532 MW-assisted leaching achieves near quantitative recovery (&gt;99%) for Ni, Mn, Co while reducing the reaction times by up to 75%. Characterization of the obtained oxalates reveals that, while the leaching media do not affect the composition, mechanical stirring plays a major role during the precipitation, ensuring uniform growth and morphology. Consequently, the hybrid setup (MW-assisted leaching and “standard” precipitation) has been chosen for the best-performing recipe scale up, followed by cathode recovery and electrochemical testing. Quantitative green chemistry metrics further confirm the process efficiency, demonstrating a 40%–60% reduction in specific energy consumption and 35% reduction in process mass intensity via direct solid-oxalate addition. The resynthesized cathodes demonstrate electrochemical performance comparable with the pristine commercial benchmark, demonstrating the feasibility of the proposed recycling routes. Finally, the procedure was successfully validated on real NMC622 spent battery black mass, confirming the efficiency and transferability of the proposed method as a sustainable hydrometallurgical recycling route.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70325","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258322","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
Fabrication of Nb2O5@IrO2 Core–Shell Catalysts for Enhanced Oxygen Evolution Reaction in Acidic Media 酸性介质中增强析氧反应Nb2O5@IrO2核壳催化剂的制备
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-18 DOI: 10.1002/celc.70327
Soomin Kim, Yongsug Tak
{"title":"Fabrication of Nb2O5@IrO2 Core–Shell Catalysts for Enhanced Oxygen Evolution Reaction in Acidic Media","authors":"Soomin Kim,&nbsp;Yongsug Tak","doi":"10.1002/celc.70327","DOIUrl":"https://doi.org/10.1002/celc.70327","url":null,"abstract":"<p>Iridium oxide (IrO<sub>2</sub>) is the benchmark catalyst for the acidic oxygen evolution reaction (OER) in proton exchange membrane water electrolysis (PEMWE), but its cost and scarcity require improved Ir utilization. Herein, Nb<sub>2</sub>O<sub>5</sub>@IrO<sub>2</sub> core–shell catalysts were developed using ball-milled Nb<sub>2</sub>O<sub>5</sub> supports with uniform IrO<sub>2</sub> shell formation. Ball-milling at 300 rpm for 8 h produced a rounded and relatively uniform Nb<sub>2</sub>O<sub>5</sub> morphology with a high defect-related oxygen contribution, providing favorable support characteristics for homogeneous IrO<sub>2</sub> deposition. Electron microscopy and elemental mapping supported an approximately 3 nm IrO<sub>2</sub> shell on the Nb<sub>2</sub>O<sub>5</sub> core. Among catalysts prepared from supports milled for different durations, BM-8h-Nb<sub>2</sub>O<sub>5</sub>@IrO<sub>2</sub> exhibited the best OER performance in 0.1 M HClO<sub>4</sub>, with an overpotential of 307 mV at 10 mA cm<sup>−2</sup> and an IrO<sub>2</sub> mass activity of 304.17 A g<sub>IrO2</sub><sup>−1</sup>, outperforming unsupported IrO<sub>2</sub>. Although the 18 h ball-milled catalyst exhibited the largest electrochemically active surface area, its lower OER activity indicates that optimized support morphology and defect structure, rather than surface area alone, govern IrO<sub>2</sub> utilization. These results demonstrate that ball-milled Nb<sub>2</sub>O<sub>5</sub> support provides an effective platform for Ir-efficient acidic OER catalysts relevant to PEMWE anodes.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70327","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149258106","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
Core–Shell Molecularly Imprinted Polymer@SiO2@Fe3O4 for Low-Cost and Selective Electrochemical Sensing of Paraquat 核壳分子印迹Polymer@SiO2@Fe3O4用于百草枯低成本和选择性电化学传感
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-14 DOI: 10.1002/celc.70332
M. Ashraful Kader, Gang Li, Yang Liu
{"title":"Core–Shell Molecularly Imprinted Polymer@SiO2@Fe3O4 for Low-Cost and Selective Electrochemical Sensing of Paraquat","authors":"M. Ashraful Kader,&nbsp;Gang Li,&nbsp;Yang Liu","doi":"10.1002/celc.70332","DOIUrl":"https://doi.org/10.1002/celc.70332","url":null,"abstract":"<p>The widespread use of the water-soluble paraquat (PQ) herbicide has found to be linked with numerous toxic outcomes to humans as well as aquatic animals, while the on-site and rapid measurement is still challenging due to unsuitability and lack of selectivity of the existing techniques. This study presents a selective, sensitive, and low-cost electrochemical sensor for detecting residual PQ in water by combining a core–shell molecularly imprinted polymer (MIP)@SiO<sub>2</sub>@Fe<sub>3</sub>O<sub>4</sub> material with a portable screen-printed carbon electrode (SPCE). Adsorptive stripping voltammetry (AdSV) was employed to determine PQ using the proposed MIP@SiO<sub>2</sub>@Fe<sub>3</sub>O<sub>4</sub>/SPCE, exhibiting high analytical performance with a sensitivity of 7.27 µA/µM, a two-segment linear range of 0.25–20 and 20–50 µM, and a detection limit of 0.043 µM. In addition, excellent selectivity towards PQ was achieved, even in the presence of a 20-fold excess of interfering substances commonly found in various water matrices. Recoveries of 89.72%–113.46% were obtained at the MIP@SiO<sub>2</sub>@Fe<sub>3</sub>O<sub>4</sub>/SPCE for the determination of PQ in tap water, river water, and seawater samples, and the results were validated using high-performance liquid chromatography, demonstrating its strong potential for practical applications in aquatic analysis.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70332","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149177390","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
Rapid Alternating Polarity-Enabled Electrochemical Decarboxylative Borylation of Aryl Carboxylic Acids 快速交变极性催化芳基羧酸的电化学脱羧硼酸化
IF 5.2 4区 化学
ChemElectroChem Pub Date : 2026-10-14 DOI: 10.1002/celc.70320
Riya Halder, Johannes L. Röckl, Anna Olsson, Eleni Lazaridi, Lutz Ackermann, Magnus J. Johansson
{"title":"Rapid Alternating Polarity-Enabled Electrochemical Decarboxylative Borylation of Aryl Carboxylic Acids","authors":"Riya Halder,&nbsp;Johannes L. Röckl,&nbsp;Anna Olsson,&nbsp;Eleni Lazaridi,&nbsp;Lutz Ackermann,&nbsp;Magnus J. Johansson","doi":"10.1002/celc.70320","DOIUrl":"https://doi.org/10.1002/celc.70320","url":null,"abstract":"<p>Aromatic carboxylic acids are attractive feedstocks owing to their stability, commercial abundance, and widespread presence in pharmaceuticals and functional molecules. However, their direct decarboxylation under mild conditions has remained a longstanding challenge because of the slow fragmentation of aroyloxyl radicals and the prevalence of competing pathways. Herein, we report an electrochemical decarboxylative borylation of aryl carboxylic acids enabled by rapid alternating polarity (rAP) using reticulated vitreous carbon (RVC) electrodes. The protocol operates at ambient temperature without transition metals or external oxidants, delivering aryl boronic acid esters directly from abundant aromatic acid feedstocks. In addition to its synthetic utility, the method exhibits markedly lower energy intensity than previously reported photochemical decarboxylation platforms, highlighting its potential as a scalable and sustainable strategy for the direct conversion of abundant aromatic acid feedstocks into valuable organoboron building blocks.</p>","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"13 21","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.70320","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149177392","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
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