Bioelectrochemistry最新文献_第5页

Sillenite-type multiferroic Bi12.5Fe0.5O19.5 decorated ReSe2 as an electrochemical platform for sensitive and selective detection of stress hormones in human biological fluids 硅长岩型多铁质Bi12.5Fe0.5O19.5修饰了ReSe2作为灵敏和选择性检测人体生物体液中应激激素的电化学平台

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-12-05 DOI: 10.1016/j.bioelechem.2025.109194

Rajalakshmi Sakthivel , Hsuan-I Chen , Akash Ashokrao Jagtap , Sayee Kannan Ramaraj , Yu-Chien Lin , Udesh Dhawan , Ting-Yu Liu , Ren-Jei Chung

{"title":"Sillenite-type multiferroic Bi12.5Fe0.5O19.5 decorated ReSe2 as an electrochemical platform for sensitive and selective detection of stress hormones in human biological fluids","authors":"Rajalakshmi Sakthivel , Hsuan-I Chen , Akash Ashokrao Jagtap , Sayee Kannan Ramaraj , Yu-Chien Lin , Udesh Dhawan , Ting-Yu Liu , Ren-Jei Chung","doi":"10.1016/j.bioelechem.2025.109194","DOIUrl":"10.1016/j.bioelechem.2025.109194","url":null,"abstract":"<div><div>Norepinephrine (NEP) or noradrenaline is a key catecholamine that functions both as a neurotransmitter and hormone, playing a pivotal role in mood regulation, cardiovascular function, and the stress response. Reliable and sensitive detection of NEP is crucial for clinical diagnosis and health monitoring. Herein, we describe a novel electrochemical sensor that enables efficient and affordable detection of NEP based on Sillenite-type multiferroic bismuth ferrite integrated onto rhenium diselenide nanosheets (Bi<sub>12.5</sub>Fe<sub>0.5</sub>O<sub>19.5</sub>@ReSe<sub>2</sub>) nanohybrid. The ReSe<sub>2</sub> nanosheets were synthesized by the hot injection method, and the Bi<sub>12.5</sub>Fe<sub>0.5</sub>O<sub>19.5</sub>@ReSe<sub>2</sub> nanohybrid was synthesized using a hydrothermal route and uniformly deposited on the GCE via drop-casting. Comprehensive structural and morphological characterizations were conducted using advanced spectroscopic techniques. The electrochemical characteristics of the sensor were inspected via voltammetry and impedance analysis. The synergistic interaction within the nanocomposite enhances electrochemical performance. The sensor exhibited a linear detection response to NEP in the 0.5–993 μM range, with a detection limit of 0.112 μM and a sensitivity of 0.154 μA μM<sup>−1</sup> cm<sup>−2</sup>. It showed excellent precision, stability, and strong resistance to interference from common biomolecules. Its successful application to NEP detection in human fluids (serum and urine) with satisfactory recovery confirms its promise for use in clinical diagnostics and real-time physiological monitoring.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109194"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Voltage-induced closure of β-barrel channels as electrochemical gating 作为电化学门控的β桶通道的电压诱导闭合。

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-11-25 DOI: 10.1016/j.bioelechem.2025.109181

Laidy M. Alvero-González , D. Aurora Perini , M. Lidón López , Antonio Alcaraz , María Queralt-Martín

{"title":"Voltage-induced closure of β-barrel channels as electrochemical gating","authors":"Laidy M. Alvero-González , D. Aurora Perini , M. Lidón López , Antonio Alcaraz , María Queralt-Martín","doi":"10.1016/j.bioelechem.2025.109181","DOIUrl":"10.1016/j.bioelechem.2025.109181","url":null,"abstract":"<div><div>Most β-barrel channels exhibit voltage gating, transitioning from high- to low-conducting states under high transmembrane potentials. Unlike flexible alpha-helical channels in which a physical occlusion appears, these rigid structures lack a clear gating mechanism. Using the bacterial porin OmpF from <em>E. coli</em> as a model system, we reveal a non-linear dependence of gating kinetics on electrolyte concentration, explained by a model based on Debye screening with high-concentration adjustments. Also, we demonstrate a large variability in low-conducting state conductances and a striking inversion in ion selectivity, switching from cationic in the high-conducting states to anionic in the low-conducting ones. Based on this and previous data, like the lack of a defined closed-state structure with major structural changes or narrowing of the pore, we hypothesize that OmpF channel closure could be understood as an <em>electrochemical gating</em> process. We suggest a non-steric mechanism in which low-conducting states arise from the disruption of the electrochemical gradient occurring when the external voltage causes subtle, collective reorganizations of channel residues, leading to surface dewetting at diverse locations of the channel. This model brings ideas from solid state nanopores were gating occurs without structural movements, offering a fresh perspective on β-barrel channel closure.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109181"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145659859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A flexible carbon nanotube field-effect transistor-based immunosensor for the selective and sensitive detection of salivary lysozyme: A biomarker of Alzheimer's disease 一种基于柔性碳纳米管场效应晶体管的免疫传感器，用于选择性和敏感检测唾液溶菌酶：阿尔茨海默病的生物标志物。

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-12-02 DOI: 10.1016/j.bioelechem.2025.109193

Gulam Rabbani , Akbar Mohammad , Mohammad Ehtisham Khan , Waleed Zakri , Abrar Ahmad , Glowi Alasiri , Wahid Ali , Syed Kashif Ali , Nazim Hasan , Abdulrahman Khamaj , Jintae Lee

{"title":"A flexible carbon nanotube field-effect transistor-based immunosensor for the selective and sensitive detection of salivary lysozyme: A biomarker of Alzheimer's disease","authors":"Gulam Rabbani , Akbar Mohammad , Mohammad Ehtisham Khan , Waleed Zakri , Abrar Ahmad , Glowi Alasiri , Wahid Ali , Syed Kashif Ali , Nazim Hasan , Abdulrahman Khamaj , Jintae Lee","doi":"10.1016/j.bioelechem.2025.109193","DOIUrl":"10.1016/j.bioelechem.2025.109193","url":null,"abstract":"<div><div>In the modern era, Alzheimer's disease (AD) is one of the most common causes of dementia, with its prevalence increasing over time. Collecting brain tissues for research related to neurodegenerative diseases is challenging due to the need for highly trained neurosurgeons to perform surgery and extract brain tissue. Access to human brain tissue is limited, as sampling faces technical, ethical and cost obstacles. Therefore, developing a noninvasive method to detect biomarkers for an accurate diagnosis of AD is crucial. In this study, we selected lysozyme (LYZ) as a model analyte to quantify in saliva because LYZ levels are upregulated in AD patients. Nafion-anchored carbon nanotubes (Nafion/CNTs) nanocomposite was successfully synthesized and deposited on the polyethylene terephthalate (PET) substrate and utilized in the fabrication of FET-based immunosensor, with anti-LYZ covalently immobilized. Under the optimized conditions, the immunosensor displayed a linear correlation in the range of 0.05 to 100 μg/mL with a LOD of 0.05 μg/mL. The immunosensor exhibited high specificity against interfering molecules and was effectively employed in detecting LYZ in human saliva sample, yielding satisfactory recoveries. This noninvasive method for quantifying LYZ as AD biomarker offers a straightforward and sensitive approach to detection, suggesting significant potential applications in clinical diagnostics.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109193"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145712939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Fluorescence imaging of hydrogel-immobilised microalgae combined with simulations as a novel platform to study electropermeabilisation 水凝胶固定微藻的荧光成像与模拟相结合作为研究电渗透的新平台

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-12-11 DOI: 10.1016/j.bioelechem.2025.109200

Julia Baumgartner , Peter Bigler , Robert Axelrod , Dionys Breu , Tobias Hofmann , Byron Perez , Sing Teng Chua , Michael H.-P. Studer , Fengzheng Gao , Alexander Mathys

{"title":"Fluorescence imaging of hydrogel-immobilised microalgae combined with simulations as a novel platform to study electropermeabilisation","authors":"Julia Baumgartner , Peter Bigler , Robert Axelrod , Dionys Breu , Tobias Hofmann , Byron Perez , Sing Teng Chua , Michael H.-P. Studer , Fengzheng Gao , Alexander Mathys","doi":"10.1016/j.bioelechem.2025.109200","DOIUrl":"10.1016/j.bioelechem.2025.109200","url":null,"abstract":"<div><div>Cell electropermeabilisation in pulsed electric field (PEF) treatments depends on complex interactions among chamber geometry, treatment parameters, biological and environmental conditions. Traditional PEF optimisation methods, such as numerical simulations or flow cytometry (FCM), typically address only isolated aspects of these interactions. Here, we present an experimental-computational platform that combines fluorescence imaging of hydrogel-immobilised <em>Chlamydomonas reinhardtii</em> with electric field simulations. Thereby, local treatment intensity in complex chamber geometries can be assessed, and experimental workload is reduced by probing multiple field strengths in a single treatment. Cells embedded in a transparent hydrogel matrix were exposed to PEF using a custom grid electrode that creates spatial field gradients. After staining with Sytox Green, a marker of membrane damage, fluorescence microscopy images of the hydrogel were overlaid with simulated electric field maps. Quantitative image analysis enabled an estimation of the electropermeabilisation threshold within the semi-solid matrix and could be validated against conventional FCM in cell suspensions. During long-pulse (35 μs) exposures, some fluorescence patterns not captured by simulations highlighted the need for further investigation. Nevertheless, the platform provides a consistent, image-based method for evaluating local PEF treatment intensity and inhomogeneity, adaptable to diverse PEF chamber designs and biological systems.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109200"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145786522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 glucose biosensor via co-electrodeposition of methylene blue and glucose oxidase on carbon nanotube yarns 亚甲基蓝与葡萄糖氧化酶在碳纳米管纱线上共电沉积的柔性葡萄糖生物传感器

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-11-19 DOI: 10.1016/j.bioelechem.2025.109174

Jifan Zhao, Xiaorui He, Linghui Tang, Yue Wang, Shaoyan Wang

{"title":"Flexible glucose biosensor via co-electrodeposition of methylene blue and glucose oxidase on carbon nanotube yarns","authors":"Jifan Zhao, Xiaorui He, Linghui Tang, Yue Wang, Shaoyan Wang","doi":"10.1016/j.bioelechem.2025.109174","DOIUrl":"10.1016/j.bioelechem.2025.109174","url":null,"abstract":"<div><div>In this study, we report a flexible and highly sensitive glucose sensor (CNTYs-MB/GOx) for the first time based on methylene blue (MB) and glucose oxidase (GOx) co-electrodeposited onto carbon nanotube yarns (CNTYs). Unlike conventional MB/GOx coatings on planar carbon electrodes, the three-dimensional CNTY network provides a large electroactive surface area and efficient electron transport pathways, enabling dense and uniform immobilization of the MB/GOx complex. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR) confirmed the effective capture and stabilization of GOx by MB and its homogeneous distribution on the CNTYs. This co-deposition strategy increased the active surface area 1.3-fold compared with physically adsorbed MB/GOx, resulting in significantly enhanced electrocatalytic activity. The sensor achieved a low detection limit of 25.2 μM, a wide linear range of 0.1–65 mM, excellent repeatability (RSD = 4.12 %), high selectivity (interference <5.4 %), and good long-term stability (86 % signal retention after 15 days). Moreover, it maintained a stable current response (RSD = 1.22 %) under repeated bending and mechanical deformation. In comparison of sequential electrodeposition and physical adsorption methods, this one-step co-electrodeposition enables MB and GOx to assemble synergistically on the CNTY surface, improving enzyme retention, increasing electroactive surface area, and facilitating efficient electron transfer. These results highlight the advantages of the CNTY-based co-electrodeposition approach and its potential for developing flexible, wearable glucose monitoring devices beyond traditional MB/GOx platforms.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109174"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145571203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Gold nanoparticle-modified graphene oxide electrochemical aptasensor for ultrasensitive detection of interferon gamma in kidney transplants 金纳米粒子修饰氧化石墨烯电化学感应传感器用于肾移植干扰素γ的超灵敏检测

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-12-22 DOI: 10.1016/j.bioelechem.2025.109207

Nashmin Hosseini , Sattar Akbari Nakhjavani , Mohammadreza Ardalan , Abdollah Salimi , Khosro Adibkia , Yadollah Omidi

{"title":"Gold nanoparticle-modified graphene oxide electrochemical aptasensor for ultrasensitive detection of interferon gamma in kidney transplants","authors":"Nashmin Hosseini , Sattar Akbari Nakhjavani , Mohammadreza Ardalan , Abdollah Salimi , Khosro Adibkia , Yadollah Omidi","doi":"10.1016/j.bioelechem.2025.109207","DOIUrl":"10.1016/j.bioelechem.2025.109207","url":null,"abstract":"<div><div>The early and accurate detection of interferon gamma (IFN-γ), a key cytokine in acute cellular rejection following kidney transplantation, is essential for effective immunosuppressive management. Current methods often lack the sensitivity, speed, or simplicity for routine clinical immunomonitoring. Here, we developed a novel electrochemical aptasensor that employs a thiolated reduced graphene oxide/gold nanoparticles (TrGO–AuNPs) nanohybrid interface for IFN-γ detection. The platform integrates an anthraquinone-labeled hairpin aptamer immobilized onto the TrGO/AuNPs-modified glassy carbon electrode, through a binding-induced conformational switching mechanism to enhance signal transduction efficiency. Upon differential pulse voltammetry, the sensor exhibited a wide linear range from 0.28 to 900 pg mL<sup>−1</sup> and an ultra-low limit of detection (67 fg mL<sup>−1</sup>). These analytical values surpass clinically relevant IFN-γ levels observed during acute cellular rejection. The synergistic TrGO/AuNPs combination significantly enhanced aptamer anchoring, surface conductivity, and signal resolution. The sensor demonstrated excellent selectivity in complex matrices and reliable recovery in spiked human serum, with a total analysis time of less than 45 min. To the best of our knowledge, this is the first report to utilize the TrGO–AuNPs nanohybrid architecture for electrochemical quantification of IFN-γ, offering a simplified, rapid, and sensitive strategy for point-of-care transplant immunomonitoring and highlighting the translational utility of the platform.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109207"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A low-voltage alternating electric field strategy against Phaeodactylum tricornutum: Anti-biofouling mechanism under electrical stimulation 低压交变电场对抗三角褐指藻的策略：电刺激下的抗生物结垢机制

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-11-25 DOI: 10.1016/j.bioelechem.2025.109180

Zhihao Zhou , Xuan Huang , Dongbai Sun , Hongying Yu , Xuzhou Jiang

{"title":"A low-voltage alternating electric field strategy against Phaeodactylum tricornutum: Anti-biofouling mechanism under electrical stimulation","authors":"Zhihao Zhou , Xuan Huang , Dongbai Sun , Hongying Yu , Xuzhou Jiang","doi":"10.1016/j.bioelechem.2025.109180","DOIUrl":"10.1016/j.bioelechem.2025.109180","url":null,"abstract":"<div><div>Biofouling is significantly harmful to marine engineering equipment. Utilizing electric fields for biofouling prevention is a promising approach. Current research on electric field anti-biofouling mechanisms primarily focuses on high-voltage fields, while low-voltage alternating electric fields exhibit excellent anti-biofouling efficacy and potential. This study employs low-voltage alternating electric fields, characterized by low energy consumption, high controllability, and minimal environmental impact, to repel the typical fouling microorganisms (<em>Phaeodactylum tricornutum</em>). The parameters of electric field were optimized to achieve a repulsion efficiency of 97.2 %. With DCFH-DA fluorescent probes, the elevated intracellular reactive oxygen species (ROS) levels were observed after electric field treatment. Increased malondialdehyde (MDA) content confirmed the lipid peroxidation, revealing the induction of oxidative stress. Rhodamine 123 staining revealed the damage to the mitochondrial membrane in alternating electric field-treated cells, directly resulting in reduced adenosine triphosphate (ATP) levels. These results indicate that low-voltage alternating electric fields disrupts energy homeostasis via ROS-mediated mitochondrial damage, thereby inhibiting diatom adhesion. This study investigates the biological mechanism of an electric field-based anti-biofouling strategy from the perspective of cellular energy supply, highlighting the critical role of energy pathways in microbial adhesion. The findings provide theoretical support for developing next-generation anti-biofouling systems and advancing sustainable marine engineering.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109180"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145616680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A bioelectrocatalytic glucose oxidation cascade for energy-efficient electrocatalysis applications 用于高能效电催化应用的生物电催化葡萄糖氧化级联

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-12-10 DOI: 10.1016/j.bioelechem.2025.109198

Yuxia Zhang , Yili Zhang , Yan Zheng , Hongfen Deng , Chen Li , Zhi Li , Cuixing Xu , Zhaohui Hou , Gangyong Li

{"title":"A bioelectrocatalytic glucose oxidation cascade for energy-efficient electrocatalysis applications","authors":"Yuxia Zhang , Yili Zhang , Yan Zheng , Hongfen Deng , Chen Li , Zhi Li , Cuixing Xu , Zhaohui Hou , Gangyong Li","doi":"10.1016/j.bioelechem.2025.109198","DOIUrl":"10.1016/j.bioelechem.2025.109198","url":null,"abstract":"<div><div>Hydrogen energy and metal-air batteries, particularly zinc-air batteries (ZABs), have garnered significant interest as clean energy vectors and energy storage devices, respectively. However, their efficiency is constrained by the high overpotential and sluggish kinetics associated with the oxygen evolution reaction (OER). In this study, we propose a green and efficient bioelectrocatalytic cascade system designed to overcome the energy efficiency limitations of conventional OER. The system employs nitrogen-doped carbon nanotubes (N-CNTs) as both supporting material and electrocatalyst for immobilizing glucose oxidase (GOx) and for the in situ catalytic decomposition of H<sub>2</sub>O<sub>2</sub> produced during the GOx-catalyzed oxidation of glucose. This approach not only significantly reduces the overpotentials required for water splitting and ZAB charging but also facilitates the co-production of high-value gluconic acid. Electrochemical evaluations demonstrate that the bioelectrocatalytic hydrogen evolution system achieves a current density of 10 mA cm<sup>−2</sup> at just 1.60 V. Furthermore, ZABs incorporating this system exhibit high power density and exceptional cycling stability. These findings underscore the potential of designing efficient and stable bifunctional bioelectrochemical catalysts as an energy-saving and high-efficiency strategy for hydrogen production and biomass valorization.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109198"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145733319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

MFC-based biosensors for real-time monitoring BOD and Toxicity in paraquat and pesticide-contaminated wastewater 基于mfc的生物传感器用于实时监测百草枯和农药污染废水中的BOD和毒性

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-12-24 DOI: 10.1016/j.bioelechem.2025.109210

Raqba Raqba , Azka Azfreen , Warda Imran , Muhammad Usman , Naeem Ali

{"title":"MFC-based biosensors for real-time monitoring BOD and Toxicity in paraquat and pesticide-contaminated wastewater","authors":"Raqba Raqba , Azka Azfreen , Warda Imran , Muhammad Usman , Naeem Ali","doi":"10.1016/j.bioelechem.2025.109210","DOIUrl":"10.1016/j.bioelechem.2025.109210","url":null,"abstract":"<div><div>Monitoring water quality is crucial for ecosystem preservation and public health in Pakistan, where agricultural/chemical contamination is diminishing clean water resources. This research aimed to develop long-term, reusable, and cost-effective MFC-based biosensors for monitoring BOD and toxicity in paraquat, pesticide-contaminated wastewater. Two double-chamber MFCs were fabricated with a 250 mL working volume, a Nafion membrane, and carbon felt electrodes, inoculated with pesticide-contaminated soil (PMFC) and pesticide-contaminated soil plus anaerobic sludge (PSMFC). Both biosensors reached a voltage of 400 ± 10 mV after 48 h, which was enhanced to 600 ± 25 mV with a 200 mV solar input during the enrichment phase. During stable power generation, PMFC and PSMFC achieved current outputs of 0.024 mA and 0.014 mA, respectively, and power densities of 225.49 mWm<sup>−2</sup> and 50.06 mWm<sup>−2</sup>. PMFC (R<sup>2</sup> 0.9343) showed a stronger linear correlation between BOD levels (10–70 mgL<sup>−1</sup>) and voltage than PSMFC (R<sup>2</sup> 0.7673). Voltage initially increased at paraquat concentrations of 1–10 mgL<sup>−1</sup> but decreased at 50–100 mgL<sup>−1</sup> due to biofilm inhibition. BOD measurements by PMFC closely matched conventional BOD₅ results, with a mean relative error of 7.03 %, highlighting its superior sensing performance with a 40-min response time during real-time monitoring.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109210"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synergistic effect of ternary nanoparticles ag@Zn-In2S3-(3-MPA): enhancement of catalyst electrocatalytic activity and luminophore electrochemiluminescence efficiency 三元纳米颗粒ag@Zn-In2S3-(3-MPA)的协同效应：增强催化剂电催化活性和发光团电化学发光效率

IF 4.5 2区化学

Bioelectrochemistry Pub Date : 2026-06-01 Epub Date: 2025-11-13 DOI: 10.1016/j.bioelechem.2025.109171

Shaopeng Zhang, Wenjin Liang, Wenjing Lai, Yingying Cheng, Chulei Zhao, Min Wang, Chenglin Hong, Hongling Li

{"title":"Synergistic effect of ternary nanoparticles ag@Zn-In2S3-(3-MPA): enhancement of catalyst electrocatalytic activity and luminophore electrochemiluminescence efficiency","authors":"Shaopeng Zhang, Wenjin Liang, Wenjing Lai, Yingying Cheng, Chulei Zhao, Min Wang, Chenglin Hong, Hongling Li","doi":"10.1016/j.bioelechem.2025.109171","DOIUrl":"10.1016/j.bioelechem.2025.109171","url":null,"abstract":"<div><div>Zn-In<sub>2</sub>S<sub>3</sub> has attracted much attention in electrochemiluminescence (ECL) due to its electronic properties, but severe carrier recombination and low content of sulfur vacancy (Sv) limit its electrocatalytic activity in the ECL process. In this study, the catalytic performance of Zn-In<sub>2</sub>S<sub>3</sub> for ECL process was enhanced by synthesizing Ag@Zn-In<sub>2</sub>S<sub>3</sub>-(3-MPA). The composite of Ag increased sulfur vacancies via electronic metal-support interaction (EMSI), which in turn enhanced the electrocatalytic activity of Zn-In<sub>2</sub>S<sub>3</sub>. Meanwhile the grafting of 3-mercaptopropionic acid (3-MPA) was to further enhance the electrocatalytic activity through bonding interaction and amorphization effect. All these improvements enhance the carrier separation efficiency and reduce their recombination, while facilitating the electron transfer during the generation of reactive oxygen species (ROS, e.g., *OH). This process further accelerates the electron transfer between luminol<sup>•-</sup> and ROS, which significantly enhances the ECL signal of luminol. A sensor for the detection of carcinoembryonic antigen (CEA) was successfully constructed using Ag@Zn-In<sub>2</sub>S<sub>3</sub>-(3-MPA)/luminol as a secondary antibody marker with a wide detection range and high sensitivity. The study solves the problem of low catalytic activity of Zn-In<sub>2</sub>S<sub>3</sub> and provides new ideas for the application of Zn-In<sub>2</sub>S<sub>3</sub> in the fields of electrocatalysis, photocatalysis and electrochemiluminescence.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"169 ","pages":"Article 109171"},"PeriodicalIF":4.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145571204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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