Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2024.118845
Qian Lei , Shuai Wang , Qinyu Wu , Rui Cao , Zhenfei Cai , Cheng Liu , Yangzhou Ma , Guangsheng Song , Weidong Yang , Cuie Wen
Silicon monoxide(SiO)-based anode materials have been extensively examined as high energy density for lithium-ion batteries, but still suffer from low initial Coulombic efficiency(ICE). Here, A novel SiO-MnO/Mn2SiO4-MnxSi anode material, prepared through scalable ball milling and heat treatment, is proposed for the first time, in which Mn2SiO4 and MnxSi alloy through solid-state reaction are embedded in the silicon oxide matrix to improve ICE. Half-cell testing shows that the ICE of pristine SiO increased from 52.5 % to 70.5 %, thanks to the solid-state reaction between SiO and MnO during the heat treatment, in which MnO consumed the SiO2 generated during the disproportionation of SiO, thereby reducing the first irreversible loss of Li+ during the lithiation process. In addition, the MnxSi alloy phase can improve lithium-ion diffusion ability to a certain extent. This report provides a new approach to alleviate the ICE performance of SiO-based anode materials.
{"title":"In-situ synthesis of Mn2SiO4 and MnxSi dual phases through solid-state reaction to improve the initial Coulombic efficiency of SiO anode for Lithium-Ion batteries","authors":"Qian Lei , Shuai Wang , Qinyu Wu , Rui Cao , Zhenfei Cai , Cheng Liu , Yangzhou Ma , Guangsheng Song , Weidong Yang , Cuie Wen","doi":"10.1016/j.jelechem.2024.118845","DOIUrl":"10.1016/j.jelechem.2024.118845","url":null,"abstract":"<div><div>Silicon monoxide(SiO)-based anode materials have been extensively examined as high energy density for lithium-ion batteries, but still suffer from low initial Coulombic efficiency(ICE). Here, A novel SiO-MnO/Mn<sub>2</sub>SiO<sub>4</sub>-Mn<em><sub>x</sub></em>Si anode material, prepared through scalable ball milling and heat treatment, is proposed for the first time, in which Mn<sub>2</sub>SiO<sub>4</sub> and Mn<em><sub>x</sub></em>Si alloy through solid-state reaction are embedded in the silicon oxide matrix to improve ICE. Half-cell testing shows that the ICE of pristine SiO increased from 52.5 % to 70.5 %, thanks to the solid-state reaction between SiO and MnO during the heat treatment, in which MnO consumed the SiO<sub>2</sub> generated during the disproportionation of SiO, thereby reducing the first irreversible loss of Li<sup>+</sup> during the lithiation process. In addition, the Mn<em><sub>x</sub></em>Si alloy phase can improve lithium-ion diffusion ability to a certain extent. This report provides a new approach to alleviate the ICE performance of SiO-based anode materials.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118845"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132525","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}
Galvanostatic method based on the convection-dependent adsorption (CDA) model can be effectively utilized to predict the blind via filling performance but failed in evaluating the throwing power (TP) of an acidic copper plating solution for through hole (TH) thickening. In this work, another two factors of copper ions mass transfer and electric field distribution inside the TH are considered for further understanding the thickening mechanism of TH. Considering the copper ions mass transfer, forced convection is necessary to improve the undesirable gradient distribution of copper ions concentration inside the TH for the uniform thickening. Considering the uneven electric field distribution, a simple strategy for evaluating the TP of a plating solution by the electrochemical electrode kinetic parameters measured from linear scanning voltammetry (LSV) test is established. A larger value of Tafel slope (lower value of transfer coefficient) indicates that inside the TH, copper deposition rates at the hole center and hole mouth are more approaching thereby in favor of higher TP. The strategy, which is verified by three copper plating solutions and the finite element simulation, indicates the great reliability and applicability in TH thickening.
{"title":"From electrochemical kinetics to evaluate the through hole thickening throwing power of an acidic copper solution","authors":"Jia-Qiang Yang, Yi-Long Liu, Si-Yu Chen, Ren Hu, Fang-Zu Yang, Dongping Zhan","doi":"10.1016/j.jelechem.2024.118862","DOIUrl":"10.1016/j.jelechem.2024.118862","url":null,"abstract":"<div><div>Galvanostatic method based on the convection-dependent adsorption (CDA) model can be effectively utilized to predict the blind via filling performance but failed in evaluating the throwing power (TP) of an acidic copper plating solution for through hole (TH) thickening. In this work, another two factors of copper ions mass transfer and electric field distribution inside the TH are considered for further understanding the thickening mechanism of TH. Considering the copper ions mass transfer, forced convection is necessary to improve the undesirable gradient distribution of copper ions concentration inside the TH for the uniform thickening. Considering the uneven electric field distribution, a simple strategy for evaluating the TP of a plating solution by the electrochemical electrode kinetic parameters measured from linear scanning voltammetry (LSV) test is established. A larger value of Tafel slope (lower value of transfer coefficient) indicates that inside the TH, copper deposition rates at the hole center and hole mouth are more approaching thereby in favor of higher TP. The strategy, which is verified by three copper plating solutions and the finite element simulation, indicates the great reliability and applicability in TH thickening.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118862"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133105","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}
Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2024.118830
Hao Lu , Tanji Yin , Feng Luan , Yanhong Li , Wei Qin
Surfactants are a type of amphiphilic chemicals that comprise both hydrophilic and hydrophobic regions, and the presence of surfactants would bring a detrimental effect on the potential responses of the solid-contact ion-selective electrodes induced by their extraction from the aqueous solution into the polymeric membrane phase. Herein, an anti-surfactant solid-contact Ca2+-selective electrode is proposed based on tailoring the surface of the polymeric membrane with the thin-layer Nafion membrane. The extraction of surfactants into the polymeric membrane can be eliminated through using the hydrophobic group of Nafion acting as “a polymer brush”, while the Ca2+ diffusion from the aqueous solution to the membrane phase is promoted by the hydrophilic group of Nafion based on the electrostatic interaction. The Nafion-functionalized solid-contact Ca2+-ISE shows an improved potential stability and an excellent potentiometric performance for detection of Ca2+ in the presence of cationic and anionic surfactants as compared to the traditional solid-contact Ca2+-ISE. Moreover, the anti-surfactant solid-contact ion-selective electrode is feasible for in situ measurement of Ca2+ at the interface between the seawater and the sediment. This work provides a general and facile strategy to eliminate the interferences of surfactants during the potentiometric measurements, and is favorable for in situ, on-site measurement with high accuracy and precision in the aquatic environment.
{"title":"Tailoring the surface of a polymeric membrane with a thin-layer Nafion membrane: Construction of an anti-surfactant solid-contact ion-selective electrode","authors":"Hao Lu , Tanji Yin , Feng Luan , Yanhong Li , Wei Qin","doi":"10.1016/j.jelechem.2024.118830","DOIUrl":"10.1016/j.jelechem.2024.118830","url":null,"abstract":"<div><div>Surfactants are a type of amphiphilic chemicals that comprise both hydrophilic and hydrophobic regions, and the presence of surfactants would bring a detrimental effect on the potential responses of the solid-contact ion-selective electrodes induced by their extraction from the aqueous solution into the polymeric membrane phase. Herein, an anti-surfactant solid-contact Ca<sup>2+</sup>-selective electrode is proposed based on tailoring the surface of the polymeric membrane with the thin-layer Nafion membrane. The extraction of surfactants into the polymeric membrane can be eliminated through using the hydrophobic group of Nafion acting as “a polymer brush”, while the Ca<sup>2+</sup> diffusion from the aqueous solution to the membrane phase is promoted by the hydrophilic group of Nafion based on the electrostatic interaction. The Nafion-functionalized solid-contact Ca<sup>2+</sup>-ISE shows an improved potential stability and an excellent potentiometric performance for detection of Ca<sup>2+</sup> in the presence of cationic and anionic surfactants as compared to the traditional solid-contact Ca<sup>2+</sup>-ISE. Moreover, the anti-surfactant solid-contact ion-selective electrode is feasible for <em>in situ</em> measurement of Ca<sup>2+</sup> at the interface between the seawater and the sediment. This work provides a general and facile strategy to eliminate the interferences of surfactants during the potentiometric measurements, and is favorable for <em>in situ, on-site</em> measurement with high accuracy and precision in the aquatic environment.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118830"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132439","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}
Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2024.118868
Jie Liu , Guangning Wang , Shuyuan Zhang , Chunjing Zhang , Chenxi Wang , Siqi Yang , Tingting Chen , Haijun Pang
Electrocatalytic water splitting offers a simple, efficient, and environmentally friendly method for sustainable hydrogen production. Therefore, in this study, transition metals were introduced into polyoxometalate-based coordination polymers (POMCPs) to form a novel highly efficient and stable trimetallic sulfide material. The POMCPs [Ag(C2H2N3)]3(PMo12O40)·3H2O (1) was served as molybdenum and silver sources, while thiourea provided sulfur source, respectively, and nickel foam was utilized both as a three-dimensional conductive substrate and a nickel source, and a uniform growth of MoS2/Ag2S/NiS@NF trimetallic sulfide was prepared by one-step hydrothermal method. This approach not only takes advantage of the strong electronic coupling between Ag2S and MoS2 matrix, but also creates a large number of interfacial defects or strong electronic interactions. The electrocatalytic performance of MoS2/Ag2S/NiS@NF outperformed many polyoxometalate-based and sulfide-based catalysts, demonstrating a low overpotential of 100 mV and a Tafel slope of 100 mV dec−1 at a current density of 10 mA cm−2. The Faraday efficiency of the composite can reach 96.5%. The synergistic effects and enhanced electron transfer occurring at the interfaces of the sulfide heterostructures facilitate the increase of active sites and significantly improve the electrocatalytic properties of the material. This work provides a promising approach for the design and fabrication of highly efficient trimetallic sulfide electrocatalysts.
{"title":"Directed synthesis of synergistic trimetallic sulfides hydrogen evolution electrocatalysts by pre-designed polynuclear silver modified POMCPs","authors":"Jie Liu , Guangning Wang , Shuyuan Zhang , Chunjing Zhang , Chenxi Wang , Siqi Yang , Tingting Chen , Haijun Pang","doi":"10.1016/j.jelechem.2024.118868","DOIUrl":"10.1016/j.jelechem.2024.118868","url":null,"abstract":"<div><div>Electrocatalytic water splitting offers a simple, efficient, and environmentally friendly method for sustainable hydrogen production. Therefore, in this study, transition metals were introduced into polyoxometalate-based coordination polymers (POMCPs) to form a novel highly efficient and stable trimetallic sulfide material. The POMCPs [Ag(C<sub>2</sub>H<sub>2</sub>N<sub>3</sub>)]<sub>3</sub>(PMo<sub>12</sub>O<sub>40</sub>)·3H<sub>2</sub>O (<strong>1</strong>) was served as molybdenum and silver sources, while thiourea provided sulfur source, respectively, and nickel foam was utilized both as a three-dimensional conductive substrate and a nickel source, and a uniform growth of MoS<sub>2</sub>/Ag<sub>2</sub>S/NiS@NF trimetallic sulfide was prepared by one-step hydrothermal method. This approach not only takes advantage of the strong electronic coupling between Ag<sub>2</sub>S and MoS<sub>2</sub> matrix, but also creates a large number of interfacial defects or strong electronic interactions. The electrocatalytic performance of MoS<sub>2</sub>/Ag<sub>2</sub>S/NiS@NF outperformed many polyoxometalate-based and sulfide-based catalysts, demonstrating a low overpotential of 100 mV and a Tafel slope of 100 mV dec<sup>−</sup><sup>1</sup> at a current density of 10 mA cm<sup>−2</sup>. The Faraday efficiency of the composite can reach 96.5%. The synergistic effects and enhanced electron transfer occurring at the interfaces of the sulfide heterostructures facilitate the increase of active sites and significantly improve the electrocatalytic properties of the material. This work provides a promising approach for the design and fabrication of highly efficient trimetallic sulfide electrocatalysts.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118868"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132526","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}
Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2024.118808
Angamuthu Gnanavel , Derek Ovc-Okene , Lakshmi Shiva Shankar , László Trif , Robert Kun
Lithium-Sulfur battery (Li-S) is considered as a promising new generation battery chemistry. Nevertheless, the sulfur based battery chemistry has downsides in terms of the low electronic conductivity, polysulfide shuttle effect, and low active material utilization. Currently, there are several strategies available to suppress LiPS shuttling and thereby enhance cycle life behavior of the Li-S battery. However, there is no existing literature on the use of organosulfur-based copolymer as a cathode additive material in Li-S. Herein, we have investigated the feasibility of organosulfur copolymer synthesized using sulfur, fresh and used cooking (sunflower) oil. The developed polymers were used cathode additives. The results reveal that the copolymer developed by used cooking oil-loaded cathode (poly-S-UCO@SC) delivers high specific discharge capacity of 936mAh/g at 0.05C-rate and the copolymer developed by fresh sunflower oil loaded cathode (poly-S-SF@SC) exhibits 828mAh/g. However, the poly-S-UCO@SC exhibited poor structural stability, continuous cathode degradation and poor electrochemical performances than poly-S-SF@SC. The poly-S-SF@SC showed improved polysulfide conversion, reduced shuttle effect, reversible redox process, 66.5 % capacity retention for 40 cycles with stable cycling stability and shows much potential as a suitable cathode additive material compared to poly-S-UCO. The results demonstrate that utilization of biomass-based components in Li-S batteries may trigger new research pathways in Li-Sulfur battery science and technology.
{"title":"Synthesis and electrochemical performance Assessment of sunflower oil-based organosulfur Co-Polymers as the cathode additive for Li-S battery","authors":"Angamuthu Gnanavel , Derek Ovc-Okene , Lakshmi Shiva Shankar , László Trif , Robert Kun","doi":"10.1016/j.jelechem.2024.118808","DOIUrl":"10.1016/j.jelechem.2024.118808","url":null,"abstract":"<div><div>Lithium-Sulfur battery (Li-S) is considered as a promising new generation battery chemistry. Nevertheless, the sulfur based battery chemistry has downsides in terms of the low electronic conductivity, polysulfide shuttle effect, and low active material utilization. Currently, there are several strategies available to suppress LiPS shuttling and thereby enhance cycle life behavior of the Li-S battery. However, there is no existing literature on the use of organosulfur-based copolymer as a cathode additive material in Li-S. Herein, we have investigated the feasibility of organosulfur copolymer synthesized using sulfur, fresh and used cooking (sunflower) oil. The developed polymers were used cathode additives. The results reveal that the copolymer developed by used cooking oil-loaded cathode (poly-S-UCO@SC) delivers high specific discharge capacity of 936mAh/g at 0.05C-rate and the copolymer developed by fresh sunflower oil loaded cathode (poly-S-SF@SC) exhibits 828mAh/g. However, the poly-S-UCO@SC exhibited poor structural stability, continuous cathode degradation and poor electrochemical performances than poly-S-SF@SC. The poly-S-SF@SC showed improved polysulfide conversion, reduced shuttle effect, reversible redox process, 66.5 % capacity retention for 40 cycles with stable cycling stability and shows much potential as a suitable cathode additive material compared to poly-S-UCO. The results demonstrate that utilization of biomass-based components in Li-S batteries may trigger new research pathways in Li-Sulfur battery science and technology.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118808"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2024.118865
Chanwon Park , Hyejin Rhyu , Suhun Jo , Myung Hyun Kang , Yun Chan Kang , Wooseok Song , Sun Sook Lee , Jongsun Lim , Sung Myung
In this study, we developed a highly sensitive electrochemical sensor for detecting dopamine (DA) using a simple and fast CO2 laser scribing technique. The UV/Ozone-treated polyimide (PI) film coated with CeO2 precursor was scribed by the CO2 laser to synthesize the electrochemical sensor (UV-LC). The CeO2 particles were well anchored on the laser-induced graphene (LIG) surface, enhancing the electrochemical surface area (ESA) from 1.31 cm2 in LIG to 3.35 cm2 in UV-LC. Also, the CeO2 particles were affected by the reducing charge transfer resistance (Rct) from 1281 Ω to 761.8 Ω which is the LIG and UV-LC value, respectively. UV-LC demonstrated a linear response to DA concentrations from 0 to 10 μM, with a sensitivity of 25.09 μA/μM·cm2 and a detection limit (LOD) of 0.38 μM which is the higher and lower value compared to other metal oxide-based DA sensors. Additionally, UV-LC exhibited good selectivity with glucose (GU), ascorbic acid (AA), and uric acid (UA) being less than 55 % of the DA current response. These results suggest this sensor is highly suitable for DA detection in biosensing applications. Furthermore, this simple and rapid fabrication process opens possibilities for various electrochemical devices.
{"title":"Electrochemical sensor based on laser-induced graphene and CeO2 for sensitive and selective dopamine detection","authors":"Chanwon Park , Hyejin Rhyu , Suhun Jo , Myung Hyun Kang , Yun Chan Kang , Wooseok Song , Sun Sook Lee , Jongsun Lim , Sung Myung","doi":"10.1016/j.jelechem.2024.118865","DOIUrl":"10.1016/j.jelechem.2024.118865","url":null,"abstract":"<div><div>In this study, we developed a highly sensitive electrochemical sensor for detecting dopamine (DA) using a simple and fast CO<sub>2</sub> laser scribing technique. The UV/Ozone-treated polyimide (PI) film coated with CeO<sub>2</sub> precursor was scribed by the CO<sub>2</sub> laser to synthesize the electrochemical sensor (UV-LC). The CeO<sub>2</sub> particles were well anchored on the laser-induced graphene (LIG) surface, enhancing the electrochemical surface area (ESA) from 1.31 cm<sup>2</sup> in LIG to 3.35 cm<sup>2</sup> in UV-LC. Also, the CeO<sub>2</sub> particles were affected by the reducing charge transfer resistance (R<sub>ct</sub>) from 1281 Ω to 761.8 Ω which is the LIG and UV-LC value, respectively. UV-LC demonstrated a linear response to DA concentrations from 0 to 10 μM, with a sensitivity of 25.09 μA/μM·cm<sup>2</sup> and a detection limit (LOD) of 0.38 μM which is the higher and lower value compared to other metal oxide-based DA sensors. Additionally, UV-LC exhibited good selectivity with glucose (GU), ascorbic acid (AA), and uric acid (UA) being less than 55 % of the DA current response. These results suggest this sensor is highly suitable for DA detection in biosensing applications. Furthermore, this simple and rapid fabrication process opens possibilities for various electrochemical devices.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118865"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2024.118860
Dong Chang , Zhangmin Wang , Xin Xu , Tong Shen , Hongwei Yu , Yuting Zhang , Xiaohui An , Yiyang Fan , Xiaoyi Yang , Hongzhi Pan , Ze Zhang
A multi-signal amplification system using an ITO electrode printed with disposable screen ink was developed for the rapid detecting des-gamma-carboxy prothrombin (DCP). Gold nanoparticles, uniformly shaped, were electrodeposited on the ITO electrode to improve conductivity and biocompatibility. To boost the sensor’s sensitivity, isoreticular metal–organic framework-3 (IROMF-3) and methylene blue (MB) were employed to expand the electrode’s surface area and intensify the current signal. Additionally, the avidin-loaded silver nanoelectrode, capable of binding more biotinylated DCP antibodies, further heightened sensitivity. The developed immunosensor effectively detected trace DCP in serum, with a linear range of 0.31 ng/mL to 40 ng/mL, a detection limit of 0.138 ng/mL, and a recovery rate of 97.9–109.2 % under optimal experimental conditions. This study offers a promising approach for the rapid field detection of trace DCP in serum.
{"title":"Rapid detection of des-gamma-carboxy prothrombin with disposable screen printed ITO electrode based on multiple signal amplification strategy of metal–organic skeleton material","authors":"Dong Chang , Zhangmin Wang , Xin Xu , Tong Shen , Hongwei Yu , Yuting Zhang , Xiaohui An , Yiyang Fan , Xiaoyi Yang , Hongzhi Pan , Ze Zhang","doi":"10.1016/j.jelechem.2024.118860","DOIUrl":"10.1016/j.jelechem.2024.118860","url":null,"abstract":"<div><div>A multi-signal amplification system using an ITO electrode printed with disposable screen ink was developed for the rapid detecting des-gamma-carboxy prothrombin (DCP). Gold nanoparticles, uniformly shaped, were electrodeposited on the ITO electrode to improve conductivity and biocompatibility. To boost the sensor’s sensitivity, isoreticular metal–organic framework-3 (IROMF-3) and methylene blue (MB) were employed to expand the electrode’s surface area and intensify the current signal. Additionally, the avidin-loaded silver nanoelectrode, capable of binding more biotinylated DCP antibodies, further heightened sensitivity. The developed immunosensor effectively detected trace DCP in serum, with a linear range of 0.31 ng/mL to 40 ng/mL, a detection limit of 0.138 ng/mL, and a recovery rate of 97.9–109.2 % under optimal experimental conditions. This study offers a promising approach for the rapid field detection of trace DCP in serum.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118860"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132438","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}
Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2025.118935
Yiwen Chen , Hongyan Yang , Caixia Chang , Jiajia Wang , Jincheng Mu , Baojun Liu
Sulfamethoxazole (SMX) is a kind of widely used antibacterial antibiotic, which can be detected in different water bodies, and poses great harm to aquatic organisms and human health. In this study, different transition metal-loaded carbon oxide blacks (M−OBC, M = Mn, Fe, Cu, or Co) were prepared as cathodic catalysts for the degradation of SMX in the electro-Fenton system. Under optimal conditions of 0.3 mM Fe2+ concentration, −0.5 V, and pH 3, the Mn-OBC catalyst exhibited the most remarkable degradation efficiency, achieving a complete removal of SMX from the water within a mere 10 min. The relationship between catalyst structure and performance was further investigated through morphological and structural characterization. It was revealed that the existence of Mn3+/ Mn4+ significantly accelerates the rapid conversion of Fe2+ and H2O2. Electrochemical performance tests were used to investigate the redox capacity of the catalysts, while radical quenching experiments and electron paramagnetic resonance (EPR) spectroscopy were employed to qualitatively detect ·OH radicals as active oxygen species. Three degradation pathways were ascertained by LC-MS. Simultaneously, toxicity analysis of degradation intermediates showed that most of the intermediates were less toxic than SMX. Therefore, this study provides a reference value for solving low-concentration persistent organic pollutants in water.
{"title":"Study on the performance of metal-loaded carbon black cathode for electro-Fenton degradation of SMX","authors":"Yiwen Chen , Hongyan Yang , Caixia Chang , Jiajia Wang , Jincheng Mu , Baojun Liu","doi":"10.1016/j.jelechem.2025.118935","DOIUrl":"10.1016/j.jelechem.2025.118935","url":null,"abstract":"<div><div>Sulfamethoxazole (SMX) is a kind of widely used antibacterial antibiotic, which can be detected in different water bodies, and poses great harm to aquatic organisms and human health. In this study, different transition metal-loaded carbon oxide blacks (M−OBC, M = Mn, Fe, Cu, or Co) were prepared as cathodic catalysts for the degradation of SMX in the electro-Fenton system. Under optimal conditions of 0.3 mM Fe<sup>2+</sup> concentration, −0.5 V, and pH 3, the Mn-OBC catalyst exhibited the most remarkable degradation efficiency, achieving a complete removal of SMX from the water within a mere 10 min. The relationship between catalyst structure and performance was further investigated through morphological and structural characterization. It was revealed that the existence of Mn<sup>3+</sup>/ Mn<sup>4+</sup> significantly accelerates the rapid conversion of Fe<sup>2+</sup> and H<sub>2</sub>O<sub>2</sub>. Electrochemical performance tests were used to investigate the redox capacity of the catalysts, while radical quenching experiments and electron paramagnetic resonance (EPR) spectroscopy were employed to qualitatively detect ·OH radicals as active oxygen species. Three degradation pathways were ascertained by LC-MS. Simultaneously, toxicity analysis of degradation intermediates showed that most of the intermediates were less toxic than SMX. Therefore, this study provides a reference value for solving low-concentration persistent organic pollutants in water.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"980 ","pages":"Article 118935"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143164223","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}
Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2024.118846
Jing Yang , Xia Wang , Di Cheng , Chong Li , Zhe Qin , Huaixia Yang
Carcinoembryonic antigen (CEA) is a broad-spectrum tumour marker, with its concentration levels serving as a crucial predictor of cancer diagnosis. In this study, we synthesized a polycaprolactone (PCL) macromolecular polymer via enzyme ring-opening polymerization (eROP). This polymer was then utilized as a signal amplification element in the “sandwich structure” electrochemical impedance biosensor designed for CEA detection. Initially, 3-mercaptopropionic acid (MPA) was self-assembled onto the electrode surface via a gold-sulfur bond. The carboxyl terminus of MPA was then activated using carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS). Subsequently, antibody 1 (Ab1) was immobilised on the electrode surface through the formation of an amide bond, serving as a recognition probe. To prevent non-specific binding, the remaining sites were blocked with Bovine Serum Albumin (BSA). Following the specific capture of CEA by Ab1, the unreacted amino group on the electrode surface was sealed using acrolein. Antibody-2 (Ab2) was then introduced to specifically recognize CEA, forming a classic antibody–antigen–antibody “sandwich structure.” Finally, a DMPA (2,2-dihydroxymethylpropionic acid)-PCL (Polycaprolactone) polymer was conjugated to the electrode surface as a signal amplification unit. The impedance signal strength was subsequently measured using Electrochemical Impedance Spectroscopy (EIS). Under optimal conditions, the biosensor demonstrated a wide linear range (1 pg mL−1–100 ng mL−1) and a low detection limit of 0.38 pg mL−1. The sensor also exhibited high selectivity, stability and reproducibility when tested with clinical serum samples, highlighting its potential applications for early diagnosis and clinical monitoring.
{"title":"Electrochemical biosensor based on Novozym 435 enzymatic ring-opening polymerization for CEA detection","authors":"Jing Yang , Xia Wang , Di Cheng , Chong Li , Zhe Qin , Huaixia Yang","doi":"10.1016/j.jelechem.2024.118846","DOIUrl":"10.1016/j.jelechem.2024.118846","url":null,"abstract":"<div><div>Carcinoembryonic antigen (CEA) is a broad-spectrum tumour marker, with its concentration levels serving as a crucial predictor of cancer diagnosis. In this study, we synthesized a polycaprolactone (PCL) macromolecular polymer via enzyme ring-opening polymerization (eROP). This polymer was then utilized as a signal amplification element in the “sandwich structure” electrochemical impedance biosensor designed for CEA detection. Initially, 3-mercaptopropionic acid (MPA) was self-assembled onto the electrode surface via a gold-sulfur bond. The carboxyl terminus of MPA was then activated using carbodiimide hydrochloride (EDC) and <em>N</em>-hydroxysuccinimide (NHS). Subsequently, antibody 1 (Ab1) was immobilised on the electrode surface through the formation of an amide bond, serving as a recognition probe. To prevent non-specific binding, the remaining sites were blocked with Bovine Serum Albumin (BSA). Following the specific capture of CEA by Ab1, the unreacted amino group on the electrode surface was sealed using acrolein. Antibody-2 (Ab2) was then introduced to specifically recognize CEA, forming a classic antibody–antigen–antibody “sandwich structure.” Finally, a DMPA (2,2-dihydroxymethylpropionic acid)-PCL (Polycaprolactone) polymer was conjugated to the electrode surface as a signal amplification unit. The impedance signal strength was subsequently measured using Electrochemical Impedance Spectroscopy (EIS). Under optimal conditions, the biosensor demonstrated a wide linear range (1 pg mL<sup>−1</sup>–100 ng mL<sup>−1</sup>) and a low detection limit of 0.38 pg mL<sup>−1</sup>. The sensor also exhibited high selectivity, stability and reproducibility when tested with clinical serum samples, highlighting its potential applications for early diagnosis and clinical monitoring.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118846"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132445","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}
Pub Date : 2025-01-15DOI: 10.1016/j.jelechem.2024.118834
Tian Zhou, Zhangnan Xu, Nianben Zheng, Zhiqiang Sun
Repairing and regenerating the unbalanced electrolytes is critical for the long-term operation of vanadium redox flow batteries (VRFBs). In this work, we propose a simple strategy to repair the unbalanced electrolytes for capacity recovery through chemical oxidation with the V(V) electrolyte and develop a method based on image analysis to obtain the electrolytes’ V(IV) ion contents. When the V(V) electrolyte with the same concentration as that of the unbalanced electrolyte is added to the unbalanced electrolyte, V(V) ions gradually oxidize V(III) ions to V(IV) ions, and the color of the electrolyte changes significantly. By extracting the RGB information of the electrolyte image, it is found that the B channel value presents the highest sensitivity to the V(IV) ion content. Thus, the relationship between them is fitted, and the R2 of the fitted curve reaches 0.9978. Furthermore, the image analysis-based method is applied to predict the V(V) electrolyte volumes needed to repair the unbalanced electrolytes. Results show that the deviation of the B channel values between the recovered and standard V(IV) electrolytes is within 5%, demonstrating the effectiveness of the proposed repair strategy and image analysis-based method, which show great promise for practical VRFB applications.
{"title":"An image analysis-based method to determine the vanadium electrolyte contents during the capacity recovery process with a facile chemical oxidation strategy","authors":"Tian Zhou, Zhangnan Xu, Nianben Zheng, Zhiqiang Sun","doi":"10.1016/j.jelechem.2024.118834","DOIUrl":"10.1016/j.jelechem.2024.118834","url":null,"abstract":"<div><div>Repairing and regenerating the unbalanced electrolytes is critical for the long-term operation of vanadium redox flow batteries (VRFBs). In this work, we propose a simple strategy to repair the unbalanced electrolytes for capacity recovery through chemical oxidation with the V(V) electrolyte and develop a method based on image analysis to obtain the electrolytes’ V(IV) ion contents. When the V(V) electrolyte with the same concentration as that of the unbalanced electrolyte is added to the unbalanced electrolyte, V(V) ions gradually oxidize V(III) ions to V(IV) ions, and the color of the electrolyte changes significantly. By extracting the RGB information of the electrolyte image, it is found that the B channel value presents the highest sensitivity to the V(IV) ion content. Thus, the relationship between them is fitted, and the R<sup>2</sup> of the fitted curve reaches 0.9978. Furthermore, the image analysis-based method is applied to predict the V(V) electrolyte volumes needed to repair the unbalanced electrolytes. Results show that the deviation of the B channel values between the recovered and standard V(IV) electrolytes is within 5%, demonstrating the effectiveness of the proposed repair strategy and image analysis-based method, which show great promise for practical VRFB applications.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"977 ","pages":"Article 118834"},"PeriodicalIF":4.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132465","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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