Electrochimica Acta最新文献

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Reducing the Ag consumption of industrial Pb-Ag anode for metal electrowinning via embedding Ag@γ-MnO2 into Pb matrix
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-19 DOI: 10.1016/j.electacta.2025.146078
Xiaocong Zhong , Bing Zhang , Chen Zou , Yingquan Liu , Ruixiang Wang , Zhifeng Xu
{"title":"Reducing the Ag consumption of industrial Pb-Ag anode for metal electrowinning via embedding Ag@γ-MnO2 into Pb matrix","authors":"Xiaocong Zhong ,&nbsp;Bing Zhang ,&nbsp;Chen Zou ,&nbsp;Yingquan Liu ,&nbsp;Ruixiang Wang ,&nbsp;Zhifeng Xu","doi":"10.1016/j.electacta.2025.146078","DOIUrl":"10.1016/j.electacta.2025.146078","url":null,"abstract":"<div><div>PbAg (0.5–1.0 wt.%) alloys are widely employed as commercial anodes in non-ferrous metal electrowinning. To reduce silver consumption, we developed a novel Pb-Ag@γ-MnO₂ composite anode through a two-step strategy: (1) in-situ synthesis of Ag nanoparticle-decorated γ-MnO₂ (Ag@γ-MnO₂) via sequential MnO₄⁻/Mn<sup>2+</sup> redox reaction and Ag⁺ chemical reduction, followed by (2) uniform dispersion of 2.0 wt.% Ag@γ-MnO₂ particles in a Pb matrix using powder metallurgy. Systematic comparisons with industrial PbAg(0.5 wt.%) alloy and Pb composites containing individual Ag or γ-MnO₂ dispersoids (2.0 wt.%) revealed superior performance of the Pb-Ag@γ-MnO₂ composite anode. During galvanostatic polarization at 50 mA·cm⁻² in 160 g·L⁻¹ H₂SO₄, the Pb-Ag@γ-MnO₂ anode exhibited a 40 mV lower stable potential (1.33 V) than the PbAg(0.5 wt.%) benchmark. Electrochemical impedance spectroscopy and DFT calcultion confirmed its faster oxygen evolution reaction (OER) kinetics, evidenced by a lowest charge transfer resistance of 1.73 Ω·cm², linked to optimized adsorption/desorption of oxygen intermediates due to Ag nanoparticles decoration. Microstructural analysis revealed that Pb-Ag@γ-MnO₂ has a remarkably thinner (∼2.5 μm) and denser oxide layer compared to the porous 15–25 μm layer on PbAg alloys. Notably, with &lt;0.08 wt.% total Ag content, an 84% reduction from conventional PbAg alloy anodes, the Pb-Ag@γ-MnO₂ achieved comparable performance to industrial counterparts. These findings establish Ag@γ-MnO₂ as dual-functional active sites that synergistically enhance OER activity while dramatically decreasing precious metal consumption.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146078"},"PeriodicalIF":5.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From limitations to efforts: Improvement of Ti/SnO2 electrodes
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-19 DOI: 10.1016/j.electacta.2025.146073
Fatemeh Mahmoudian , Manuel A. Rodrigo , Farideh Nabizadeh Chianeh
{"title":"From limitations to efforts: Improvement of Ti/SnO2 electrodes","authors":"Fatemeh Mahmoudian ,&nbsp;Manuel A. Rodrigo ,&nbsp;Farideh Nabizadeh Chianeh","doi":"10.1016/j.electacta.2025.146073","DOIUrl":"10.1016/j.electacta.2025.146073","url":null,"abstract":"<div><div>This study investigates some innovative efforts to improve the electrical conductivity of Ti/SnO<sub>2</sub> electrodes, which are widely used electrodes in electrochemical oxidation processes. Considering the increasing challenges of water resource management and pollution, improving the performance of these electrodes has become crucial. In this regard, this research aims to evaluate the effects of various modifications, including the use of tungsten trioxide nanoparticles, and samarium oxide particles, on electrical conductivity and stability of Ti/SnO<sub>2</sub> electrodes. Various techniques were used to analyze the structural, morphological and electrochemical characteristics of the modified electrodes. Results show an improvement in the performance of modified Ti/SnO<sub>2</sub> electrodes, especially, the final modification with addition of samarium oxide led to remarkable enhancement in the electrochemical properties of this electrode, increasing its electric conductivity (and thus decreasing the energy demand, because of a reduction in the resulting cell voltage) and improving electrocatalytic properties (affecting positively to the activation of oxidants such as peroxosulfates). These findings suggest that the modified electrode can be used as effective and efficient solutions for addressing water treatment challenges soon, being a topic worth of further research work in the search of the real application of electrochemical technologies to treat wastewater.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146073"},"PeriodicalIF":5.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fe-N carbon black oxide as catalysts for oxygen reduction reaction and application to room temperature direct lignin fuel cells
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-19 DOI: 10.1016/j.electacta.2025.146083
Jiajia Tai , Quanxiong Lu , Xianliang Song
{"title":"Fe-N carbon black oxide as catalysts for oxygen reduction reaction and application to room temperature direct lignin fuel cells","authors":"Jiajia Tai ,&nbsp;Quanxiong Lu ,&nbsp;Xianliang Song","doi":"10.1016/j.electacta.2025.146083","DOIUrl":"10.1016/j.electacta.2025.146083","url":null,"abstract":"<div><div>The progress in developing inexpensive and highly effective catalysts is vital for overcoming the current limitations of oxygen reduction reaction (ORR) and the practical application of fuel cells. This study constructed a three-dimensional (3D) composite catalyst using etra-β-(8-quinolinoxy) iron phthalocyanine (EFePc) as the sites of catalytic activity, nitrogen-doped reduced graphene oxide (NRGO) as the basal plane, and oxidized carbon black (OCB) as the intercalating agent. The morphological and structural characteristics of the composite catalyst were thoroughly analyzed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, Brunauer-Emmett-Teller (BET) surface area analysis, Fourier-transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). Evidence from the results suggested that the 3D catalyst has been synthesized successfully. The EFePc-NRGO/OCB exhibited a half-wave potential (E<sub>1/2</sub>) of 0.80 V, closely approximating those of commercial Pt/C (20 wt%). The average electron transfer number was 3.77, indicating a 4-electron transfer process. Furthermore, when the catalyst was applied to direct lignin fuel cells (DLFCs), the maximum power density reached 247.87 mW/m² which far exceeded Pt/C (53.13 mW/m²). This offers a novel perspective for the advancement of high-efficiency non-noble metal catalysts and the high-value utilization of lignin.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146083"},"PeriodicalIF":5.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143660877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Image-based analysis of electrochromic materials: Gamma correction with a LEGO luminance checker
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-19 DOI: 10.1016/j.electacta.2025.146062
Jon Velasco , Pablo Galán , Rajendra Kumar R Gajjala , Eduardo Fernández , Justine Trimaille , Jean-Yves Hihn , Boris Lakard , Aitor Álvarez-Gila , Artzai Picón , F. Javier del Campo
{"title":"Image-based analysis of electrochromic materials: Gamma correction with a LEGO luminance checker","authors":"Jon Velasco ,&nbsp;Pablo Galán ,&nbsp;Rajendra Kumar R Gajjala ,&nbsp;Eduardo Fernández ,&nbsp;Justine Trimaille ,&nbsp;Jean-Yves Hihn ,&nbsp;Boris Lakard ,&nbsp;Aitor Álvarez-Gila ,&nbsp;Artzai Picón ,&nbsp;F. Javier del Campo","doi":"10.1016/j.electacta.2025.146062","DOIUrl":"10.1016/j.electacta.2025.146062","url":null,"abstract":"<div><div>This study explores the use of smartphone RGB cameras for reflectance measurements in electrochromic systems, using tungsten trioxide (WO₃) electrodes. The work highlights the challenges and inaccuracies introduced by gamma correction. While gamma correction enhances image aesthetics, it introduces significant non-linearities in RGB data, complicating scientific analyses. We propose an innovative calibration method using LEGO® pieces as a reliable luminance reference, allowing for accurate gamma correction. Our methodology ensures consistent and precise measurements across varying lighting conditions, bridging the gap between traditional spectrophotometry and accessible image-based analysis. By comparing results from RGB cameras with UV-Vis spectroscopy, we demonstrate that corrected RGB data can reliably replicate spectrophotometric data in terms of contrast ratio and response time, making this approach viable for low-cost, portable diagnostics, as well as for diverse scientific applications. This work demonstrates the potential of RGB cameras in scientific research and proposes image analysis protocols for their use in electrochromic studies.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146062"},"PeriodicalIF":5.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","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 titanium suboxide fuel cell catalyst support prepared by sol-gel method: Unveiling the role of Cu as a lone dopant
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-18 DOI: 10.1016/j.electacta.2025.146067
Fanqi Kong , Reza Alipour Moghadam Esfahani , Oliver K.L. Strong , Iraklii I. Ebralidze , Andrew J. Vreugdenhil , E. Bradley Easton
{"title":"Cu-doped titanium suboxide fuel cell catalyst support prepared by sol-gel method: Unveiling the role of Cu as a lone dopant","authors":"Fanqi Kong ,&nbsp;Reza Alipour Moghadam Esfahani ,&nbsp;Oliver K.L. Strong ,&nbsp;Iraklii I. Ebralidze ,&nbsp;Andrew J. Vreugdenhil ,&nbsp;E. Bradley Easton","doi":"10.1016/j.electacta.2025.146067","DOIUrl":"10.1016/j.electacta.2025.146067","url":null,"abstract":"<div><div>In this study, we demonstrate a facile synthetic approach for a bottom-up sol-gel method for the preparation of a non-carbonaceous Cu-doped Ti<sub>4</sub>O<sub>7</sub> suboxide (TOC) fuel cell catalyst support. In addition, we seek to achieve a better understanding of the role of Cu as a dopant and reveal its contribution to activity and stability in Pt/TOC during the oxygen reduction reaction (ORR) and corresponding accelerated stress tests (ASTs). The Pt/TOC catalyst showed an enhanced activity and stability over commercial Pt/C due to the strong metal support interaction between TOC and Pt. This enabled the catalyst to retain its oxygen reduction performance after extended load cycling tests. Thus, Cu as a lone dopant was effective in promoting oxygen vacancies and greatly reduces the electronic bandgap, however Cu was prone to leaching after repeated cycling protocols. Finally, we also observed a relatively decreased stability compared to our previous dual-doped systems, highlighting the importance of incorporating a secondary dopant species for synergistic effects in stability and activity.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146067"},"PeriodicalIF":5.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A flexible carbon nanotube//zinc based aqueous zinc ion hybrid micro-supercapacitor with wide voltage window
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-18 DOI: 10.1016/j.electacta.2025.146074
Xingxing Li , Xin Zhou , Guosheng Li , Zilong Wang , Chuankun Zhang , Yuemin Wu , Bo Zhu
{"title":"A flexible carbon nanotube//zinc based aqueous zinc ion hybrid micro-supercapacitor with wide voltage window","authors":"Xingxing Li ,&nbsp;Xin Zhou ,&nbsp;Guosheng Li ,&nbsp;Zilong Wang ,&nbsp;Chuankun Zhang ,&nbsp;Yuemin Wu ,&nbsp;Bo Zhu","doi":"10.1016/j.electacta.2025.146074","DOIUrl":"10.1016/j.electacta.2025.146074","url":null,"abstract":"<div><div>Recently, in order to satisfy the fast development of micro-supercapacitors that require both with excellent energy density and power density, zinc ion hybrid capacitors have garnered significant attention. Herein, a novel configuration of zinc-ion hybrid micro-supercapacitor with good mechanical flexibility has been assembled via carboxylated carbon nanotube (CNT) capacitor-type cathode and electrodeposited zinc (Zn) battery-type anode. The device demonstrates satisfying electrochemical characteristics, featuring an extensive operating voltage window of 1.8 V, and achieving a large areal capacity of 73 mF/cm<sup>2</sup> under 0.34 mA/cm<sup>2</sup>. Additionally, it also displays excellent flexibility, good electrochemical stability with 85% capacitance retention rate and approximately 100% coulombic efficiency even under 5000 charging-discharging cycles. This work sheds light on the device design for Zn<sup>2+</sup> storage, enabling the improvement of promising portable energy storage electronics.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"525 ","pages":"Article 146074"},"PeriodicalIF":5.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Elucidating magnesium-air battery anodes with excellent discharge performance by phase modulation with Gd element
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-18 DOI: 10.1016/j.electacta.2025.146072
Jiaxin Bao , Zhoulin Liu , Lianhui Li , Jianchun Sha , Mingliang Qiao , Jie Tian , Yiqiang Yang , Wenhong Liu , Zhiqiang Zhang
{"title":"Elucidating magnesium-air battery anodes with excellent discharge performance by phase modulation with Gd element","authors":"Jiaxin Bao ,&nbsp;Zhoulin Liu ,&nbsp;Lianhui Li ,&nbsp;Jianchun Sha ,&nbsp;Mingliang Qiao ,&nbsp;Jie Tian ,&nbsp;Yiqiang Yang ,&nbsp;Wenhong Liu ,&nbsp;Zhiqiang Zhang","doi":"10.1016/j.electacta.2025.146072","DOIUrl":"10.1016/j.electacta.2025.146072","url":null,"abstract":"<div><div>Magnesium-air batteries have a promising future as a potential green and clean energy source. The corrosion resistance and discharge performance of Mg-xGd (<em>x</em> = 0, 1, 3, 8, 15, 20 wt.%) alloys as anodes for magnesium-air batteries are systematically investigated. Gd exists in Mg alloys mainly in the form of the Mg<sub>5</sub>Gd phase. The Mg<sub>5</sub>Gd phase acts as the cathodic phase to promote the dissolution of magnesium substrate during corrosion and discharge processes. A higher content of Gd is not favorable to the improvement of corrosion resistance and discharge properties. Whereas, the corrosion resistance was improved over pure Mg with the addition of small amounts of Gd (1 and 3 wt.%). Mg-3Gd gives the best corrosion resistance. At the meantime, it exhibits the lowest amount of hydrogen evolution in the discharge state. The less hydrogen evolution side reaction is also favorable to reduce the accumulation of discharge products, and the flat discharge morphology is also favorable to product exfoliation, leading to the reduction of overpotential generated by discharge products and the increase of voltage. Mg-3Gd reaches a high voltage of 1.568 V at 2.5 mA cm<sup>-2</sup>. The simultaneous attenuation of the hydrogen evolution reaction and the chunk effect gives Mg-3Gd an optimal discharge performance with a discharge efficiency of 60.7% at 40 mA cm<sup>-2</sup> and an energy density of 1681.4 mWh g<sup>-1</sup> at 20 mA cm<sup>-2</sup>, a good candidate for anodes.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146072"},"PeriodicalIF":5.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143653915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Insights into structure and properties of catalyst-ionomer interfaces in a PEM fuel cell cathode from atomistic molecular dynamics simulations 通过原子分子动力学模拟深入了解 PEM 燃料电池阴极中催化剂-离子体界面的结构和特性
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-18 DOI: 10.1016/j.electacta.2025.146076
Victor M. Fernández-Alvarez , Kourosh Malek , Michael H. Eikerling , Alan Young , Monica Dutta , Erik Kjeang
{"title":"Insights into structure and properties of catalyst-ionomer interfaces in a PEM fuel cell cathode from atomistic molecular dynamics simulations","authors":"Victor M. Fernández-Alvarez ,&nbsp;Kourosh Malek ,&nbsp;Michael H. Eikerling ,&nbsp;Alan Young ,&nbsp;Monica Dutta ,&nbsp;Erik Kjeang","doi":"10.1016/j.electacta.2025.146076","DOIUrl":"10.1016/j.electacta.2025.146076","url":null,"abstract":"<div><div>The structure and properties of the catalyst-ionomer interface at the cathode exert a major impact on the performance of polymer electrolyte membrane fuel cells. The interface is affected by both the chemical structure of the ionomer and the potential-dependent changes to the catalyst/support surface during operation. This work presents molecular dynamics simulations of the catalyst-ionomer interface for an expanded Pt/C-ionomer thin film model. Simulations reveal that the structure of the ionomer film is sensitive to the oxidation state of the carbon support, with the preferential ionomer orientation shifting from backbone-towards-carbon to sidechain-towards-carbon oxide. The equivalent weight of the ionomer is shown to determine ionomer packing at the catalyst surface, which could impact the local oxygen transport resistance. The equivalent weight also influences the local proton concentration (or pH) and the proton conductivity at the catalyst-ionomer interface. Shorter sidechain length also increases conductivity by forming larger water clusters that act as channels for hydronium mobility. Overall, the presented simulations demonstrate how the ionomer composition could be tuned to enhance performance via its impact on kinetic, ohmic, and transport losses in fuel cell voltage.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146076"},"PeriodicalIF":5.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Early detection of bacteria in the lag phase using the distribution of relaxation times analysis 利用弛豫时间分布分析早期检测滞后期细菌
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-18 DOI: 10.1016/j.electacta.2025.145973
Kyo-Seok Lee , Sun-Mi Lee , Yonghee Bae , Kyung-Hwa Yoo
{"title":"Early detection of bacteria in the lag phase using the distribution of relaxation times analysis","authors":"Kyo-Seok Lee ,&nbsp;Sun-Mi Lee ,&nbsp;Yonghee Bae ,&nbsp;Kyung-Hwa Yoo","doi":"10.1016/j.electacta.2025.145973","DOIUrl":"10.1016/j.electacta.2025.145973","url":null,"abstract":"<div><div>Impedance spectroscopy has been explored for bacterial detection due to its rapid and noninvasive detection. In a bacterial solution, various components, including the culture medium, bacterial cells, and metabolites from bacterial growth, are present, and they exhibit different responses to alternating current electric fields depending on their size and charge. However, conventional impedance spectroscopy for bacterial detection typically considers only overall polarization processes, as isolating individual processes can be challenging. Here, we report on the distribution of relaxation times (DRTs) method, which enables the separation of polarization processes occurring at different time scales. By calculating DRTs from impedance spectra measured during bacterial growth or death, we successfully differentiated between the lag and exponential phases of growth in <em>Escherichia coli, Staphylococcus aureus</em>, and <em>Pseudomonas aeruginosa</em>. This demonstrates its potential for early bacterial detection during the lag phase. In addition, DRT analysis allowed us to distinguish between the mechanisms of action of the antibiotics meropenem and tetracycline.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 145973"},"PeriodicalIF":5.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced electrokinetic remediation of cadmium contaminated soil by calcium phosphate-modified zeolite as permeable reactive barriers
IF 5.5 3区 材料科学
Electrochimica Acta Pub Date : 2025-03-18 DOI: 10.1016/j.electacta.2025.146057
Xi Liu , Chenrui Lan , Zhenhao Yang , Xiaojie Zhuang , Haopeng Feng , Hongbin Wang , Wei Chen , Yangfeng Wu , Jing Tang
{"title":"Enhanced electrokinetic remediation of cadmium contaminated soil by calcium phosphate-modified zeolite as permeable reactive barriers","authors":"Xi Liu ,&nbsp;Chenrui Lan ,&nbsp;Zhenhao Yang ,&nbsp;Xiaojie Zhuang ,&nbsp;Haopeng Feng ,&nbsp;Hongbin Wang ,&nbsp;Wei Chen ,&nbsp;Yangfeng Wu ,&nbsp;Jing Tang","doi":"10.1016/j.electacta.2025.146057","DOIUrl":"10.1016/j.electacta.2025.146057","url":null,"abstract":"<div><div>Electrokinetic permeable reactive barrier (EK-PRB) is recognized as a prospective technology for the in-situ treatment of heavy metal-contaminated agricultural soils. However, the remediation efficiency is mostly limited by the PRB material. In this study, a calcium phosphate-modified zeolite(Z) adsorption material named Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z was successfully developed. The morphology and adsorption performance of Cd have been thoroughly explored. The adsorption capacity of Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z for Cd amounted to 209.97 mg g<sup>−1</sup>, and the fitted adsorption was in agreement with the mechanistic model, suggesting that the adsorption of Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z on Cd was mainly chemisorption. The fitted adsorption isothermal model showed that the adsorption of Z on cadmium was monolayer adsorption. The synthesized Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z was used as the adsorption material in EK-PRB to remove cadmium from contaminated agricultural soil. The removal efficiency of Cd is doubled compared to EK, and the energy consumption is reduced by about 147.2 kW·h for 1 g kg<sup>−1</sup> Cd removed. Moreover, the experimental results further confirm its potential for long-term stable application. This work demonstrates the practical feasibility of Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>/Z as an efficient PRB material in EK-PRB for in-situ remediation of Cd-contaminated soil.</div></div>","PeriodicalId":305,"journal":{"name":"Electrochimica Acta","volume":"524 ","pages":"Article 146057"},"PeriodicalIF":5.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143640824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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