International Journal of Electrochemical Science最新文献

{"title":"Preparation and characterization of metal oxide/carbon nanotube nanocomposites for photocatalytic and photo-electrocatalytic hydrogen production: A review","authors":"Dina Thole ,&nbsp;Sheriff A. Balogun ,&nbsp;Kwena D. Modibane ,&nbsp;Reineck Mhlaba ,&nbsp;Ebrahiem Botha ,&nbsp;Nicholas M. Musyoka","doi":"10.1016/j.ijoes.2025.100929","DOIUrl":"10.1016/j.ijoes.2025.100929","url":null,"abstract":"<div><div>The study of metal oxide and carbon nanomaterials for hydrogen evolution reaction (HER) catalysis stands out among the innovative solutions required by the rapid advancement of renewable energy. The potential of metal oxide catalysts to produce hydrogen is promising. In parallel, a lot of attention is being given to carbon nanotubes because of their numerous applications in environmental remediation and renewable energy. Despite an extensive amount of research on these materials, their composites, metal oxide-carbon nanotubes (MO-CNTs), remain relatively underexplored for their photocatalytic and photoelectrocatalytic (PEC) capabilities. This comprehensive study fills this knowledge gap by concentrating on the techniques used in producing and characterizing MO-CNTs composites. Aiming ways of developing methods to produce green hydrogen energy that is cost-effective. The most economical method of producing hydrogen remains to be photocatalysis. One of the important properties in photocatalysis is the band gap of the material. Many metal oxides are reported to have a high band gap; for example, recent reports indicate that TiO₂ has a band gap of 3.11 eV. Upon forming the composite with CNTs, the band gap was reduced to 3.09 eV. The reduction in the band gap is responsible for improved hydrogen production. To further understand the composites of MO-CNTs, characterization techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), cyclic voltammetry (CV), and chronoamperometry (CA), were thoroughly discussed. These techniques assist in understanding and improving the MO-CNTs composites and the synergy between the MO and CNTs. The synergistic effects of the metal oxides and carbon nanotubes are responsible for the outstanding enhancement in hydrogen production under light irradiation, as revealed by photocatalytic tests.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100929"},"PeriodicalIF":1.3,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098830","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}

{"title":"Electrochemical, surface, and theoretical studies on amine-based organic compounds as efficient corrosion inhibitors for mild steel in 1 M HCl","authors":"Mohamed Aoulad Belayachi ,&nbsp;Otmane Kharbouch ,&nbsp;Khadija Dahmani ,&nbsp;Anouar El Magri ,&nbsp;Nordine Er-rahmany ,&nbsp;Issam Saber ,&nbsp;Fatima El hajri ,&nbsp;Galai Mouhsine ,&nbsp;Shaim Abdelillah ,&nbsp;Zakaria Benzekri ,&nbsp;Said Boukhris ,&nbsp;Rafa Almeer ,&nbsp;Abdelkarim Chaouiki","doi":"10.1016/j.ijoes.2025.100951","DOIUrl":"10.1016/j.ijoes.2025.100951","url":null,"abstract":"<div><div>The present article examines the inhibitory efficiency of two synthesized amine-based organic molecules, namely 11-(2-chlorophenyl)-3,3-dimethyl-2,3,4,5,10,11-hexahydro-1H-dibenzo[be][1,4]diazepin-1-one (<strong>CDHD</strong>) and 3,3-dimethyl-11-phenyl-2,3,4,5,10,11-hexahydro-1H-dibenzo[be][1,4]diazepin-1-one (<strong>DPHD</strong>), in reducing the corrosion of mild steel in a 1 M hydrochloric acid solution. These inhibitors were synthesized and characterized by NMR spectroscopy, and their corrosion inhibition performance was evaluated using gravimetric and electrochemical techniques, including open circuit potential (OCP), Tafel polarization, and electrochemical impedance spectroscopy (EIS). Potentiodynamic polarization curves showed that the tested compounds act as mixed-type inhibitors. EIS analyses indicated that the charge transfer resistance increased from 22.7 Ω.cm² to 397.8 Ω.cm² and 606.2 Ω·cm² at a concentration of 10⁻³ M of <strong>CDHD</strong> and <strong>DPHD</strong>, respectively. Additionally, it was found that the adsorption of both compounds on the mild steel surface follows the Langmuir adsorption isotherm equation. These compounds also retained their inhibition efficiency at high temperatures. Surface morphology and elemental composition analyses of steel samples, performed using scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDS), confirmed the formation of a barrier layer covering the mild steel surface. Furthermore, quantum chemical calculations using density functional theory (DFT) provided insights into the reactivity and adsorption characteristics of the inhibitors, validated by molecular dynamic simulations. The study highlights the high efficiency of both inhibitors, with inhibition efficiencies reaching 95.9 % for DPHD at a concentration of 10⁻³ M, emphasizing their potential as environmentally friendly corrosion inhibitors for industrial applications.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 4","pages":"Article 100951"},"PeriodicalIF":1.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135935","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}

{"title":"A semi-analytical solution of a nonlinear boundary value problem arises in porous catalysts","authors":"S. Krishnakumar ,&nbsp;P. Jeyabarathi ,&nbsp;M. Abukhaled ,&nbsp;L. Rajendran","doi":"10.1016/j.ijoes.2025.100953","DOIUrl":"10.1016/j.ijoes.2025.100953","url":null,"abstract":"<div><div>In the heterogeneous catalysis, the interaction of transport effects significantly influences reaction rates. Heterogeneous catalysis is essential in several industrial processes and has various practical applications, such as protecting the environment, power generation, synthesis of chemicals, and the manufacturing of biodiesel. This intricate interaction includes external mass transfer resistance and intra-particle diffusion within the porous catalysts, which are often different from conventional chemical kinetics. The heterogeneous catalysts employed in many chemical applications are either porous materials or are created as microscopic particles with a few nanometers diameter coated on a porous substrate like silica or alumina. Mathematical modeling of such phenomena involves nonlinear boundary value problems, with necessitating approximate solutions due to their complexity. This article introduces the efficient Akbari-Ganji method (AGM), which is a semi-analytical approach for solving the nonlinear equations without requiring problem transformation or distinct nonlinear term treatment. We utilize the AGM to derive reliable analytical solutions for a nonlinear reaction-diffusion equation, specifically encompassing the Langmuir-Hinshelwood-Hougen-Watson (LHHW) model. By comparing AGM results with numerical simulations implemented in the MATLAB, this study highlights the AGM's ability in addressing nonlinear boundary value problems. The AGM's significance resides in its potential to unravel complex catalyst-related challenges and engineering applications. This work underlines the power of analytical solutions, allowing explicit insights, broad generalizations, sensitivity analyses, and parametric studies, and hence enriching our understanding of transport phenomena in the heterogeneous catalysis.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100953"},"PeriodicalIF":1.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149380","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}

{"title":"Influence of heat treatment on corrosion resistance of NiTi shape memory alloys in NaCl solution","authors":"Li Xinmei ,&nbsp;Suo Shuai ,&nbsp;Xue Tianxiang ,&nbsp;Li Wen ,&nbsp;Bu Yanjiang ,&nbsp;Wu Dongting","doi":"10.1016/j.ijoes.2025.100949","DOIUrl":"10.1016/j.ijoes.2025.100949","url":null,"abstract":"<div><div>This study conducts quenching heat treatment on hot-rolled Nickel-Titanium (NiTi) shape memory alloys, and explores effects of quenching heat treatment on microstructure and corrosion resistance of NiTi shape memory alloys through microstructure, cyclic tensile mechanical properties, polarization curves, electrochemical impedance spectroscopy, and Mott-Schottky tests. It reveals that quenching heat treatment refines the alloy's grain structure, enhances the uniformity of the microstructure, facilitates the diffusion and dissolution of Ti-C carbides, and optimizes the distribution of the alloy's chemical composition. While heat treatment may result in a reduction of the material's super-elasticity, it significantly enhances its corrosion resistance. It reduces the self-corrosion current density and corrosion rate, increases the charge transfer resistance, decreases the carrier concentration, and strengthens the stability of the passivation film. Consequently, quenching heat treatment proves to be an effective method for optimizing the performance of NiTi shape memory alloys and enhancing their corrosion resistance.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 4","pages":"Article 100949"},"PeriodicalIF":1.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135937","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}

{"title":"Electrodeposition and recovery of copper from simulated wastewater using alkali-modified amidoxime carbon felt coated with polyacrylonitrile","authors":"Dingqian Xue ,&nbsp;Chunjian Deng ,&nbsp;Jiayi Wu ,&nbsp;Hao Cheng ,&nbsp;Wei Hu ,&nbsp;Yongzhuang Zhang ,&nbsp;Zhongbing Wang ,&nbsp;Chunli Liu ,&nbsp;Guisheng Zeng","doi":"10.1016/j.ijoes.2025.100954","DOIUrl":"10.1016/j.ijoes.2025.100954","url":null,"abstract":"<div><div>The recovery of copper ions by electrodeposition is a common method for the treatment of copper-containing wastewater, but the effect of using ordinary carbon felt electrode electrodeposition is not ideal. In order to further improve the electrodeposition effect of carbon felt electrode on Cu²⁺, in this study，polyacrylonitrile was coated on the surface of the carbon felt, after which the sample was subjected to amidoxime and alkaline hydrolysis. The modified amidoxime carbon felt was prepared by loading amidoxime, amide and carboxyl groups at the same time. The experimental results showed that the modified amidoxime carbon felt had good selectivity for Cu²⁺ during adsorption. Under the same experimental conditions, the adsorption and electrodeposition of Cu²⁺ by the modified amidoxime carbon mat were greater than those by the amidoxime carbon mat. Using modified amidoxime carbon felt as the working electrode and bare carbon felt as the opposite electrode, an asymmetric AC voltage with a frequency of 400 Hz, + 5 V (20 %) and −10 V (80 %) was applied at 25 °C, the initial concentration of Cu²⁺ was 100 mg/L, and the initial pH was 3.5. The Cu²⁺ electrodeposition efficiency of the modified carbamic acid mat was the highest, and the recovery efficiency of Cu²⁺ reached 99.99 %. Since there are lone electron pairs on the amidoxime group, amide group and carboxyl group supported by the modified amidoxime carbon felt at the same time, the adsorption site of Cu²⁺ can be increased, so the recovery efficiency of Cu²⁺ can be greatly improved.The use of modified amidoxime carbon felt in this study provides a new way to recover copper from copper wastewater.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 4","pages":"Article 100954"},"PeriodicalIF":1.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421087","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}

{"title":"Ingestible electrochemical sensors: Emerging tools for gastrointestinal disease detection and monitoring","authors":"Zhaodong Wang","doi":"10.1016/j.ijoes.2025.100952","DOIUrl":"10.1016/j.ijoes.2025.100952","url":null,"abstract":"<div><div>This review explores the emerging field of ingestible electrochemical sensors for gastrointestinal (GI) disease detection and monitoring. These miniature devices, designed to be swallowed and travel through the GI tract, offer a revolutionary approach to non-invasive, real-time monitoring of various physiological parameters and biomarkers within the GI environment. The fundamental principles of electrochemical sensing and the key components of ingestible sensors have been presented, including electrodes, power sources, and communication systems. The review examines different types of ingestible electrochemical sensors, such as pH sensors utilizing ion-selective electrodes and metal oxides, gas sensors for detecting hydrogen sulfide and nitric oxide, and biomarker sensors for molecules like serotonin. Recent advancements in materials science, microelectronics, and wireless communication have enabled the development of these sophisticated devices. This review highlights the potential applications of ingestible electrochemical sensors in diagnosing and monitoring conditions such as inflammatory bowel disease and assessing medication adherence. The review also addresses the challenges facing the field, including power management, sensor stability, and data transmission. Finally, this review discuss future directions, including the integration of multiple sensing modalities, the use of biocompatible materials, and the application of artificial intelligence for data analysis, emphasizing the transformative potential of these technologies in personalized GI healthcare.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100952"},"PeriodicalIF":1.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098268","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}

{"title":"Effect of poultice composition on multi-ion transport in fired-clay bricks during electrokinetic desalination","authors":"Sana Siddique ,&nbsp;Mubashera Ishaq ,&nbsp;Abdul Ahad Hussain ,&nbsp;Maryam Hina ,&nbsp;Aamir Sohail ,&nbsp;Sameen Maqsood ,&nbsp;Aasma Akram ,&nbsp;Farwa Bint E Arshad ,&nbsp;Muhammad Yasin Naz ,&nbsp;Kashif Kamran","doi":"10.1016/j.ijoes.2025.100950","DOIUrl":"10.1016/j.ijoes.2025.100950","url":null,"abstract":"<div><div>The crystallization of water-soluble salts in the pores of a material severely affects the building structures and is a serious threat to the historical buildings of cultural importance. Electrokinetics (EK) has been investigated as a promising method for salt removal from fired-clay brick using low DC electric potential applications. This research work is focused on the desalination of fired-clay brick specimens intentionally contaminated with salt mixture (NaCl, Na₂SO₄, and NaNO₃). In order to hinder the pH ingress in the brick and to enhance the removal efficiency, the kaolin clay poultice mixed with buffering agents was applied across the specimens, i.e., CaCO₃ at the anode and CH₃COOH at the cathode side. The effect of poultice composition on the removal of Na⁺, Clˉ, <span><math><msubsup><mrow><mi>SO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mn>2</mn><mo>−</mo></mrow></msubsup></math></span> and <span><math><msubsup><mrow><mi>NO</mi></mrow><mrow><mn>3</mn></mrow><mrow><mo>−</mo></mrow></msubsup></math></span> ions was investigated by performing EK experiments for 24 h by employing kaolin clay with and without containing buffering agents. However, the effect of treatment time (i.e., 24, 36, and 48 h) on the removal of NaCl from brick samples was examined using clay poultice enriched with buffers. The results demonstrated that the clay poultice with buffering agents effectively suppressed the pH changes and enhanced the desalination efficiency in the salt mixture (66 % for Na⁺, 80 % for Clˉ, 79 % for <span><math><msubsup><mrow><mi>SO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mn>2</mn><mo>−</mo></mrow></msubsup></math></span>, and 72 % for <span><math><msubsup><mrow><mi>NO</mi></mrow><mrow><mn>3</mn></mrow><mrow><mo>−</mo></mrow></msubsup></math></span> over 24 h) and NaCl case (93 % for Na⁺, 95 % for Clˉ over 72 h). Moreover, the EK treatment time is a critical parameter, with maximum removal rate occurring within the first 24 h, indicating that extending the treatment time beyond this duration is less efficient.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100950"},"PeriodicalIF":1.3,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098837","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}

{"title":"Study on factors influencing hole diameter uniformity in electrochemical drilling of titanium matrix composites","authors":"Xin Ma ,&nbsp;Xiaoyun Hu ,&nbsp;Junzhi Shen ,&nbsp;Shukai Fan ,&nbsp;Haiqun Yang ,&nbsp;Hansong Li","doi":"10.1016/j.ijoes.2025.100935","DOIUrl":"10.1016/j.ijoes.2025.100935","url":null,"abstract":"<div><div>Titanium matrix composites (TMCs) are widely utilized in aerospace applications owing to their exceptional mechanical properties. Nevertheless, the incorporation of reinforced particles renders them challenging to machine. Electrochemical drilling (ECD) is extensively applied for drilling hard-to-machine materials due to its advantages, such as no tool wear and no induced residual stresses. Initially, during ECD experiments utilizing a cathode tool with a diameter of 20 mm, an “anomalous phenomenon” was observed for the first time, wherein the entrance diameter was significantly smaller than the balance diameter. Subsequently, we investigated the causes of this phenomenon through experimental and simulation analyses, comparing the impacts of factors like the height of the working ring and the flow field at varying depths. The factors influencing the size of the chemical reaction heat source and ohmic heat source in ECD were examined. Following this, a model for the process of achieving the balance temperature in ECD was developed, revealing that the disparity between the initial and balance temperature was the primary cause of this phenomenon. Finally, reducing the cathode outlet area by 70.8 % was found to effectively enhance the consistency of the hole size, achieving a reduction of more than 90 % in hole size variation.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 4","pages":"Article 100935"},"PeriodicalIF":1.3,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135934","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}

{"title":"Optimization of process parameters for 4643 Al alloy anodization in mixed oxalic/phosphoric electrolytes: Doehlert experimental design","authors":"Khalid H. Rashid ,&nbsp;Anees A. Khadom ,&nbsp;Abdul Amir H. Kadhum","doi":"10.1016/j.ijoes.2025.100945","DOIUrl":"10.1016/j.ijoes.2025.100945","url":null,"abstract":"<div><div>The anodization technology is commonly used for surface enhancement for aluminum and its alloys. It is widely used to improve the hardness and corrosion resistance of aluminum alloys. In the present work, the Doehlert experimental design was used to optimize the film generated on aluminum during anodization in oxalic or phosphoric solutions. The research assessed the oxide layer thickness (T_OL) and practical oxide layer efficiency (<span><math><msub><mrow><mi>η</mi></mrow><mrow><mi>POLE</mi></mrow></msub></math></span>) based on variables such as temperature, electrolyte concentration, current density, and exposure duration. According to the Doehlert experimental design, 25 tests are achieved for each response function. The anodized aluminum samples are tested in an aggressive saline solution via electrochemical techniques. The open-circuit potential measurements showed that steady-state potentials are approached after 40 minutes. The polarization measurements showed that corrosion current density decreased with an increase in layer thickness. Maximum protection efficiency was 97 % at optimum layer thickness. Electrochemical impedance spectroscopy measurements indicated that the metal's resistance increased with the thickness of the layer, corroborating the polarization findings. The outcomes of the experimental design and mathematical modeling show that all process-independent variables are significant. Furthermore, the interaction between the independent variables on the thickness of the oxide layer and the practical oxide layer efficiency is very considerable. The optimum T_OL and <span><math><mrow><msub><mrow><mi>η</mi></mrow><mrow><mi>POLE</mi></mrow></msub><mspace></mspace></mrow></math></span>are 25.5459 μm and 0.976, respectively. These results were further validated through surface morphology analyses.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100945"},"PeriodicalIF":1.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098831","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}

{"title":"Synthesis, characterization, and application of a novel electrochemical sensor based on poly [Mn(Chr)3]Cl2/PGE for the determination of ciprofloxacin in pharmaceuticals and urine samples","authors":"Abebaw Shitahun ,&nbsp;Minaleshewa Atlabachew ,&nbsp;Belete Asefa Aragaw ,&nbsp;Amare Benor ,&nbsp;Melaku Metto ,&nbsp;Atakilt Abebe","doi":"10.1016/j.ijoes.2025.100937","DOIUrl":"10.1016/j.ijoes.2025.100937","url":null,"abstract":"<div><div>Ciprofloxacin (Cpro) is a synthetic second-generation drug belonging to the fluoroquinolones class and its excretion in urine as unchanged, improper use, and overuse contributes to bacterial resistance. Therefore, continuous monitoring using sensitive and selective methods are required. In this work, a voltammetric technique with a pencil graphite electrode (PGE) modified by a novel complex of manganese (II) and chrysine (Chr (C₁₇H₁₄O₇)) ([Mn(Chr)₃]Cl₂) has been developed. The performance and surface of the modified electrode were characterized using CV, EIS, Uv-Vis and digital optical microscope and compared with the unmodified PGE electrode. The developed method has been calibrated using a series of standard solutions with increasing concentration after optimizing pH and SWV parameters. Then, ciprofloxacin has been determined in two brands of pharmaceuticals, in urine samples, and in the presence of different potential interference. The percent recoveries of Cpro in pharmaceuticals were in the range of 84.5–114.3 %, and in urine samples were in the range of 92.8–114.9 %. The values of dynamic range, LoD, and sensitivity were 1–200 µM, 0.536 µM, and −0.161, respectively. The method was selective towards Cpro in the presence of paracetamol and uric acid and can be taken as an option for the determination of ciprofloxacin in different matrices.</div></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"20 3","pages":"Article 100937"},"PeriodicalIF":1.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098874","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}