Journal of Electroanalytical Chemistry最新文献_第4页

Novel methods for the non-invasive study of archaeological coins with electrochemical impedance spectroscopy 电化学阻抗谱法用于考古钱币非侵入性研究的新方法

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-05 DOI: 10.1016/j.jelechem.2025.119261

Francesco Abate , Salvatore Daniele , Marco Musiani , Enrico Verlato , Matteo Amati , Francesco De Boni , Zygmunt Milosz , Mauro Moglianetti , Roberta Zanini , Arianna Traviglia

{"title":"Novel methods for the non-invasive study of archaeological coins with electrochemical impedance spectroscopy","authors":"Francesco Abate , Salvatore Daniele , Marco Musiani , Enrico Verlato , Matteo Amati , Francesco De Boni , Zygmunt Milosz , Mauro Moglianetti , Roberta Zanini , Arianna Traviglia","doi":"10.1016/j.jelechem.2025.119261","DOIUrl":"10.1016/j.jelechem.2025.119261","url":null,"abstract":"<div><div>Archaeological copper-based coins are usually covered by insulating <em>patina</em> layers, which prevent the establishment of effective electrical contacts. This hinders the use of electrochemical techniques, including the electrochemical impedance spectroscopy, as the undesirable removal of the <em>patina</em> irreversibly damages the artifacts. To overcome this and other constrains imposed by Heritage samples, we designed two novel experimental approaches.</div><div>In the first approach, the electrical contact problem is solved by exploiting the unique capabilities of laser ablation in producing a micro-dig that is deep enough to reach the underlying alloy, and small enough to be invisible to the naked eye. The insertion of graphite micro-fibres in the micro-dig granted the required electrical contact. Following the best practice in the field, the three-electrode cell was completed by a gel electrolyte pressed against the opposite side of the coin and containing reference and counter electrodes.</div><div>The second approach is completely non-invasive and exploits a symmetric four-electrode cell design that has never been applied to Cultural Heritage objects before. The symmetric cell was realised by putting each side of the coin in contact with a gel electrolyte, containing a reference and a working/counter electrode.</div><div>In this paper, the results obtained on real archaeological samples with each approach are compared and thoroughly discussed, with reference to experimental setups proposed in literature. Both novel approaches were able to achieve an unprecedented combination of high-quality data and non-invasiveness level. In addition, preliminary data fitting suggested a role for a diffusion phenomenon in porous media in the low-frequency regime.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119261"},"PeriodicalIF":4.1,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A novel electrochemical sensor based on one-dimensional porous bimetallic CoCu-CN nanocomposites derived from MOF-on-MOF for simultaneous detection of acetaminophen and p-aminophenol 基于MOF-on-MOF的一维多孔双金属CoCu-CN纳米复合材料的电化学传感器用于同时检测对乙酰氨基酚和对氨基酚

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-04 DOI: 10.1016/j.jelechem.2025.119263

Sumin Xu, Wenjing Liu, Jiajia Zhang, Jianying Qu

引用次数: 0

Efficient and Stable MoCo-Ni(OH)₂/NF electrocatalyst for the Upcycling of Waste PET via Ethylene Glycol Oxidation 高效稳定的MoCo-Ni(OH) 2 /NF电催化剂在废PET乙二醇氧化升级利用中的应用

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-04 DOI: 10.1016/j.jelechem.2025.119262

Qin Yu , Qiaoyi Xiang , Jingang Xie , Ying Zhou , Xiaodan Pan , Han Zhu

{"title":"Efficient and Stable MoCo-Ni(OH)₂/NF electrocatalyst for the Upcycling of Waste PET via Ethylene Glycol Oxidation","authors":"Qin Yu , Qiaoyi Xiang , Jingang Xie , Ying Zhou , Xiaodan Pan , Han Zhu","doi":"10.1016/j.jelechem.2025.119262","DOIUrl":"10.1016/j.jelechem.2025.119262","url":null,"abstract":"<div><div>The escalating production and consumption of polyethylene terephthalate (PET) plastics pose a significant environmental challenge due to widespread landfill disposal and resource depletion. Electrochemical upcycling of PET, particularly through the electrocatalytic oxidation of ethylene glycol (EG) to formate, offers a promising sustainable solution. However, the complex nature of the EGOR reaction necessitates the development of highly efficient and selective electrocatalysts. This work reports the design and synthesis of a novel MoCo co-doped Ni(OH)₂ nanosheet catalyst supported on nickel foam (NF), denoted as MoCo–Ni(OH)₂/NF, for enhanced EGOR. The controlled growth process yields a distinctive flower-like morphology of MoCo–Ni(OH)₂ nanosheets uniformly distributed on the NF substrate. The resulting MoCo–Ni(OH)₂/NF catalyst exhibits remarkable EGOR performance, achieving a high Faradaic efficiency of 72.28 % for formate production at 1.37 V (vs. RHE) and an impressive formate yield rate of 600 μmol h<sup>−1</sup> cm<sup>−2</sup>. Furthermore, the catalyst demonstrates exceptional stability, retaining its morphology and surface chemistry after extended testing. This work highlights the potential of MoCo–Ni(OH)₂/NF as a high-performance electrocatalyst for the sustainable upcycling of waste PET.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119262"},"PeriodicalIF":4.1,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly efficient and durable Ce-CoPWO composite catalyst on nickel foam for water splitting via one-step electrodeposition 高效耐用的Ce-CoPWO复合泡沫镍催化剂一步电沉积水分解

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-06-03 DOI: 10.1016/j.jelechem.2025.119264

Jiahao Ruan , Mei Wu , Yueqing Liu , Ling Tang , Zhiyu Jia

{"title":"Highly efficient and durable Ce-CoPWO composite catalyst on nickel foam for water splitting via one-step electrodeposition","authors":"Jiahao Ruan , Mei Wu , Yueqing Liu , Ling Tang , Zhiyu Jia","doi":"10.1016/j.jelechem.2025.119264","DOIUrl":"10.1016/j.jelechem.2025.119264","url":null,"abstract":"<div><div>A Ce-CoPWO catalyst supported on a nickel foam substrate was successfully synthesized via a simple one-step electrodeposition method. The catalyst exhibited remarkable electrocatalytic performance in both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). For HER, it achieved an overpotential of only 44 mV at a current density of 10 mA·cm<sup>−2</sup>, while for OER, the overpotential was 224 mV. In the overall water-splitting reaction, the catalyst delivered a current density of 10 mA·cm<sup>−2</sup> at a cell voltage of 1.491 V, demonstrating high catalytic efficiency. The outstanding performance is attributed to the synergistic effects of its unique composite structure, which includes a nanospherical cluster morphology that provides a high electrochemically active surface area and the combination of the Keggin structure of PW<sub>12</sub> nanocrystals with amorphous cerium-doped cobalt oxide. This structure enhances the exposure of active sites, optimizes reactant adsorption, and accelerates charge transfer, thereby improving catalytic activity. Additionally, the catalyst showed excellent stability during prolonged high-current tests, highlighting its reliability and durability for water-splitting applications. These results provide significant insights into the development of efficient and durable catalysts for clean energy technologies</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"993 ","pages":"Article 119264"},"PeriodicalIF":4.1,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unlocking solar potential: Taguchi-optimized idiosyncratic passivation for carbon-based perovskite solar cells 释放太阳能潜力：田口优化的碳基钙钛矿太阳能电池的特殊钝化

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-05-31 DOI: 10.1016/j.jelechem.2025.119240

Nishant Rana , Manickam Selvaraj , Jignasa V. Gohel

{"title":"Unlocking solar potential: Taguchi-optimized idiosyncratic passivation for carbon-based perovskite solar cells","authors":"Nishant Rana , Manickam Selvaraj , Jignasa V. Gohel","doi":"10.1016/j.jelechem.2025.119240","DOIUrl":"10.1016/j.jelechem.2025.119240","url":null,"abstract":"<div><div>This study is focused on unlocking solar potential by Taguchi-optimized idiosyncratic passivation for Carbon-Based Perovskite Solar Cell devices (PSCs). Perovskite solar cell technology is considered a thin-film photovoltaic technology. The systematic Taguchi method is utilized to optimize four imperative fabrication parameters: electron transport layer (ETL) type, perovskite absorber layer composition, hole transport layer (HTL) type, and perovskite layer annealing temperature. In addition, Idiosyncratic passivating materials are explored in the present study with the anticipation of achieving extraordinary efficiency and stability. Furthermore, a novel methodology of incorporating a synergistic integration of a zirconium-based metal-organic framework (MOF) as well as inorganic nanoparticles unswervingly into the perovskite layer alongside a mixed cationic perovskite composition (FA<sub>0.55</sub>MA<sub>0.25</sub>Cs<sub>0.2</sub>PbI<sub>3</sub>) is introduced for passivation. Through a series of carefully designed experiments, we identified the optimal fabrication conditions to maximize power conversion efficiency (PCE). After appropriate validation, the champion device (fabricated with the optimal parameters) yielded promising results, with an open-circuit voltage (V<sub>OC</sub>) of 0.74 V, a short-circuit current density (J<sub>SC</sub>) of 21.8 mA/cm<sup>2</sup>, a fill factor (FF) of 0.76, and a power conversion efficiency (PCE) of 12.26 %. Conspicuously, the synergistic effect of the chosen passivating additives holds significant potential for advancing the commercialization of low-cost PSCs, particularly in applications where large-area devices are required. Thus, this work institutes a robust and reproducible protocol for fabricating high-performance, low-cost carbon-based PSCs demonstrating boosted performance and reproducibility.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"994 ","pages":"Article 119240"},"PeriodicalIF":4.1,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a glucose/tartaric acid/glycerol based ternary natural deep eutectic solvent modified carbon paste electrode for carbendazim sensing 葡萄糖/酒石酸/甘油基三元天然深共熔溶剂修饰碳糊电极的研制

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-05-31 DOI: 10.1016/j.jelechem.2025.119251

Suysia R.D'’.A. Slusarenco, Beatriz A. Fernandes, Rafael M. Buoro

{"title":"Development of a glucose/tartaric acid/glycerol based ternary natural deep eutectic solvent modified carbon paste electrode for carbendazim sensing","authors":"Suysia R.D'’.A. Slusarenco, Beatriz A. Fernandes, Rafael M. Buoro","doi":"10.1016/j.jelechem.2025.119251","DOIUrl":"10.1016/j.jelechem.2025.119251","url":null,"abstract":"<div><div>In this work, a novel electrochemical sensor based on a ternary natural deep eutectic solvent (t_NADES) modified carbon paste electrode was developed to quantify carbendazim in tap water samples. Ternary NADES (t_NADES) were prepared from D (+) glucose, L (+) tartaric acid as a base binary mixture with ethylene glycol (t_NADES1), glycerol (t_NADES2) or water (t_NADES3) as a third component. When characterized by FTIR-ATR, all t_NADES presented shifts at C<img>O stretching wavenumber confirming the new formed hydrogen bonds interactions. The carbon paste electrode modified with t_NADES2<sub>–</sub><sub>10%</sub>, D(+) glucose: L(+) tartaric acid: glycerol molar ratio (1:1:5) presented the best performance among all t_NADES evaluated due to increased cohesion of the graphitic sheets of t_NADES observed at SEM-FEG images. The addition of t_NADES to the carbon paste also reduces the hydrophobic character of the CPEs. The t_NADES modified electrode presented higher peak currents for both electrochemical probe and carbendazim and lower charge transfer resistance when compared to the bare electrode. The calibration curve for carbendazim presented linear correlation in the concentration range from 1.0 to 15.0 μmol L<sup>−1</sup>, with LOD of 0.57 μmol L<sup>−1</sup>. The proposed method proved to be accurate and selective, as observed from intra-day repeatability studies (RSD < 5 %) and the reproducibility of electrode preparation (RSD <5 %). The modified electrode allowed a very accurate recovery for carbendazim in tap water samples, with recovery values between 99.2 % and 101.9 %/ (<em>n</em> = 3).</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"992 ","pages":"Article 119251"},"PeriodicalIF":4.1,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boosting photoelectrochemical detection accuracy of trace H2O2 by inducing holes accumulation on the MnOx/WO3 通过在MnOx/WO3上诱导孔积累提高微量H2O2的光电化学检测精度

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-05-30 DOI: 10.1016/j.jelechem.2025.119254

Shichu Zhao , Yuping Du , Hang Zhang , Minzhi Ma , Jiawei Zhang , Mengge Jia , Weiwei He , Zhi Zheng , Wenjun Fa

{"title":"Boosting photoelectrochemical detection accuracy of trace H2O2 by inducing holes accumulation on the MnOx/WO3","authors":"Shichu Zhao , Yuping Du , Hang Zhang , Minzhi Ma , Jiawei Zhang , Mengge Jia , Weiwei He , Zhi Zheng , Wenjun Fa","doi":"10.1016/j.jelechem.2025.119254","DOIUrl":"10.1016/j.jelechem.2025.119254","url":null,"abstract":"<div><div>Restrained by sluggish migration dynamics of holes, the detection sensitivity and limit of an anodic photoelectrochemical (APEC) strategy for trace hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) is generally difficult to meet the demands of the current chemical industry. Herein, interface hole enrichment engineering is proposed to solve this challenge. Subsequently, manganese oxide species (MnO<sub>x</sub>) was photo-deposited on tungsten trioxide (WO<sub>3</sub>) as a proof-of-concept prototype photoanode. Photoelectric structure characterization demonstrated that MnO<sub>x</sub> species were validated to diminish H<sub>2</sub>O<sub>2</sub> oxidation overpotential by increasing the concentration and lifetime of photogenerated holes, accelerating significantly H<sub>2</sub>O<sub>2</sub> oxidation. As a result, the MnO<sub>x</sub>/WO<sub>3</sub> photoanode achieves a lower detection limit of 0.1 mM and a higher sensitivity of 4.81 μA cm<sup>−2</sup> mM<sup>−1</sup> for H<sub>2</sub>O<sub>2</sub> detection respectively, which are 0.125 (0.8 mM) and 1.72 (2.79 μA cm<sup>−2</sup> mM<sup>−1</sup>) times sensitive compared to that of WO<sub>3</sub> photoanode. This work demonstrates a hole enrichment strategy to boost the sensitivity of trace H<sub>2</sub>O<sub>2</sub> analysis.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"993 ","pages":"Article 119254"},"PeriodicalIF":4.1,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexible zinc-ion hybrid supercapacitors with printable liquid GaInZn alloy anode 具有可打印液体GaInZn合金阳极的柔性锌离子混合超级电容器

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-05-29 DOI: 10.1016/j.jelechem.2025.119253

Zhenyu Xie , Gengcheng Liao , Yundan Liu , Guobao Xu , Xiang Qi , Long Ren

{"title":"Flexible zinc-ion hybrid supercapacitors with printable liquid GaInZn alloy anode","authors":"Zhenyu Xie , Gengcheng Liao , Yundan Liu , Guobao Xu , Xiang Qi , Long Ren","doi":"10.1016/j.jelechem.2025.119253","DOIUrl":"10.1016/j.jelechem.2025.119253","url":null,"abstract":"<div><div>In the realm of wearable electronics, the advancement of flexible energy storage hinges critically on the innovation of efficient electrodes. However, traditional zinc anodes employed in zinc-ion hybrid supercapacitors (ZIHSCs) exhibit restricted flexibility. In this study, we fabricated a novel GaInZn alloy anode. Through the precise melting of Ga, In, and Zn in exact proportions and subsequent deposition onto a flexible substrate via a printing technique. The liquid Ga<img>In phase, with its unique characteristics, uniformly coats the anode surface, thereby optimizing the local electric field and ion current distribution and effectively inhibiting the growth of zinc dendrites. Facilitated by its relatively low melting point, the application onto the flexible substrate is facilitated. The assembled GaInZn//PAM//AC device, featuring an alloy with a mass ratio of m<sub>Ga</sub>/m<sub>In</sub>/m<sub>Zn</sub> = 3/5.6/1.4, demonstrated exceptional performance, achieving 88 % capacity retention after 3000 cycles. It also delivered an impressive energy density of 54.5 Wh kg<sup>−1</sup> at a power density of 287.2 W kg<sup>−1</sup>. Moreover, repeated bending tests revealed excellent mechanical stability, with the device retaining 80.8 % of its initial capacity even after 800 bending cycles. This printable liquid alloy anode holds substantial promise for the next-generation flexible energy storage within the realm of wearable electronics.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"993 ","pages":"Article 119253"},"PeriodicalIF":4.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cu-doped Prussian blue analog-derived (Ni,Co)Se2 nanocubes for high-performance supercapattery cathode 高性能超级电池阴极用掺铜普鲁士蓝模拟衍生（Ni,Co）Se2纳米立方

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-05-29 DOI: 10.1016/j.jelechem.2025.119232

Bingge Li, Song Liu, Ziwei Sun, Xiaojie Liu

{"title":"Cu-doped Prussian blue analog-derived (Ni,Co)Se2 nanocubes for high-performance supercapattery cathode","authors":"Bingge Li, Song Liu, Ziwei Sun, Xiaojie Liu","doi":"10.1016/j.jelechem.2025.119232","DOIUrl":"10.1016/j.jelechem.2025.119232","url":null,"abstract":"<div><div>Selenide materials are promising for electrochemical energy storage owing to their high theoretical capacity but designing nanostructures with unique architectures and energy properties is still challenging. In this paper, Cu-(Ni,Co)Se<sub>2</sub> nanocubes were prepared using nickel cobalt based-Prussian blue (NiCo-PBA) as a template through high-temperature selenization and ion doping. The introduction of Cu ions significantly enhances the conductivity of the materials and their vacancy defects concentrations, resulting in improved electrode capacity and cycle stability. The capacity of the optimized Cu-(Ni,Co)Se<sub>2</sub> material reaches 140.3 mAh g<sup>−1</sup> and maintains 81.1 % after 5000 cycles. When assembled into Cu-(Ni,Co)Se<sub>2</sub>//AC supercapattery, the device provides a high energy density of 41.9 Wh kg<sup>−1</sup> at a power density of 750.0 W kg<sup>−1</sup>, coupled with excellent cycling stability of 87.3 % after 5000 cycles. Overall, the improved capacitive features of the proposed Se material are potential for supercapattery applications.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"992 ","pages":"Article 119232"},"PeriodicalIF":4.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144190339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

UV-assisted electrochemical oxidation for saline wastewater treatment: Condition optimization and mechanism exploration 紫外辅助电化学氧化处理含盐废水：条件优化及机理探讨

IF 4.1 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2025-05-28 DOI: 10.1016/j.jelechem.2025.119250

Ping Cao , Zhengnan Li , Jiahao Hu , Wenkai Ye , Yuanhui Ji , Han Lin , Jiahua Zhu

{"title":"UV-assisted electrochemical oxidation for saline wastewater treatment: Condition optimization and mechanism exploration","authors":"Ping Cao , Zhengnan Li , Jiahao Hu , Wenkai Ye , Yuanhui Ji , Han Lin , Jiahua Zhu","doi":"10.1016/j.jelechem.2025.119250","DOIUrl":"10.1016/j.jelechem.2025.119250","url":null,"abstract":"<div><div>Saline wastewater, generated from various industrial processes, poses significant environmental challenges and leads to the waste of valuable saline resources if not properly treated. Traditional treatment methods often fail to achieve efficient removal of organic pollutants in saline wastewater. In this study, a UV-assisted electrochemical oxidation (UV/EO) process was employed to effectively degrade phenol in saline wastewater. The synergistic effects between UV irradiation and electrochemical oxidation (EO) on phenol degradation were systematically demonstrated. Mechanistic insights into the UV/EO process were provided through electron paramagnetic resonance (EPR) analysis and the determination of steady-state concentrations of reactive free radicals. Additionally, the phenol degradation intermediates were identified using gas chromatography–mass spectrometry (GC–MS) and high-performance liquid chromatography (HPLC). The degradation pathways of these intermediates in the UV/EO system were further investigated through free radical inhibition assays. The results revealed that the UV/EO process exhibited a significant synergistic effect, primarily due to the enhanced generation of hydroxyl radicals (OH·) under UV irradiation. Furthermore, the performance of the UV/EO system was evaluated using real saline industrial wastewater containing complex and refractory organic pollutants. Under optimal conditions, the UV/EO system achieved a TOC removal rate of 68.9 %, which was 12.3 % higher than the 56.5 % achieved by the EO process alone. This study provides a deeper understanding of the mechanisms underpinning the UV/EO process and highlights its potential for practical applications in treating saline organic wastewater.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"993 ","pages":"Article 119250"},"PeriodicalIF":4.1,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0