Journal of Solid State Electrochemistry最新文献

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Reduced graphene oxide film modified by tannic acid for high areal performance supercapacitors 单宁酸修饰的还原氧化石墨烯薄膜用于高性能超级电容器
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-16 DOI: 10.1007/s10008-024-05946-y
Wei Wang, Qiang Li, Yage Pan, Chuanren R. Ye, Xingnian Li, Yingyu Chen, Qiong Tang, Jun Xu, Yanwu Zhu
{"title":"Reduced graphene oxide film modified by tannic acid for high areal performance supercapacitors","authors":"Wei Wang,&nbsp;Qiang Li,&nbsp;Yage Pan,&nbsp;Chuanren R. Ye,&nbsp;Xingnian Li,&nbsp;Yingyu Chen,&nbsp;Qiong Tang,&nbsp;Jun Xu,&nbsp;Yanwu Zhu","doi":"10.1007/s10008-024-05946-y","DOIUrl":"10.1007/s10008-024-05946-y","url":null,"abstract":"<div><p>When graphene oxide (GO) was reduced, the stacking of reduced graphene oxide (rGO) sheets would lead to far lower of its specific capacitance than the theoretical value of graphene. In order to solve this problem, we use tannic acid (TA) to modify the rGO layered film by vacuum filtration of the mixture of GO and TA in solution, and then mild thermal reduction at 180℃. Due to the rich redox active functional groups of TA, the introduction of TA can not only alleviate the stacking of rGO sheets and promote the reduction process of GO at relatively low temperature, but also provide additional pseudocapacitance. When used for two-electrode symmetrical supercapacitor in 6 M KOH electrolyte, the TrGO-0.5 gives areal capacitance of 525 mF cm<sup>−2</sup>, and energy density of 72.2 uWh cm<sup>−2</sup> at power density of 250.9 uW cm<sup>−2</sup>. It also has capacitance retention of 91.7% after 10,000 charging/discharging cycles at current density of 4 mA cm<sup>−2</sup>. The TrGO-0.5 based button cell with 2 M 1-ethyl-3-methylimidazole tetrafluoroborate (EMIMBF<sub>4</sub>) as electrolyte shows the practical application to light up three LEDs.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141641694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Facile synthesis of integrated electrode-separator-electrolyte hydrogel for solid-state supercapacitor 用于固态超级电容器的集成电极分离器-电解质水凝胶的简易合成
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-16 DOI: 10.1007/s10008-024-06013-2
Yang Cao, Liming Qing, Junru Yao, Yan Wang, Ning Gu, Qiang Fu, Youyi Sun
{"title":"Facile synthesis of integrated electrode-separator-electrolyte hydrogel for solid-state supercapacitor","authors":"Yang Cao,&nbsp;Liming Qing,&nbsp;Junru Yao,&nbsp;Yan Wang,&nbsp;Ning Gu,&nbsp;Qiang Fu,&nbsp;Youyi Sun","doi":"10.1007/s10008-024-06013-2","DOIUrl":"10.1007/s10008-024-06013-2","url":null,"abstract":"<div><p>A new integrated electrode-separator-electrolyte hydrogel is designed and prepared, which is composed of organic liquid crystal, polyvinyl alcohol (PVA), polyaniline (PANI), and reduced graphene oxide (rGO). The organic liquid crystal is introduced into PVA hydrogel, effectively improving compatibility between active materials and hydrogel matrix. The PANI active material is in situ polymerized in hydrogel to prepare PANI-double-network hydrogel. It simultaneously acts as electrode, separator, and electrolyte for assembling flexible solid-state supercapacitor. It obtains an area-specific capacitance of 160.2 mF/cm<sup>2</sup> and a power density of 101.5 μW/cm<sup>2</sup> with an energy density of 21.0 μWh/cm<sup>2</sup>. This work provides a new method to reduce interfacial resistance of electrode, separator, and electrolyte of flexible solid-state supercapacitor, further improving its electrochemical performance.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141640678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a label-free impedimetric immunosensor for the detection of respiratory syncytial virus 开发用于检测呼吸道合胞病毒的无标记阻抗免疫传感器
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-15 DOI: 10.1007/s10008-024-05999-z
Tallita Stéfanne e Silva, Guilherme Ramos Oliveira e Freitas, Lucas Franco Ferreira, Diego Leoni Franco
{"title":"Development of a label-free impedimetric immunosensor for the detection of respiratory syncytial virus","authors":"Tallita Stéfanne e Silva,&nbsp;Guilherme Ramos Oliveira e Freitas,&nbsp;Lucas Franco Ferreira,&nbsp;Diego Leoni Franco","doi":"10.1007/s10008-024-05999-z","DOIUrl":"10.1007/s10008-024-05999-z","url":null,"abstract":"<div><p>Respiratory syncytial virus (RSV) is responsible for outbreaks of bronchiolitis, bronchitis, and pneumonia and is effective and lethal in children under five years old. Current RSV detection methods are expensive, time-consuming, and require highly skilled personnel. Therefore, we developed a cost-effective impedimetric immunosensor for the detection of RSV based on a pencil graphite electrode (PGE) modified with a polymeric film derived from 3-amino phenylacetic acid. The current responses in the potassium ferricyanide and methylene blue solutions suggest the presence of unchanged carboxylic acid groups in the polymer. With a similar number of electrons involved in the first step of the reaction and electron/proton ratio to those proposed for aniline, a mechanism for electropolymerization was proposed. The immunosensor was assembled by activating the carboxyl groups via an EDC/NHS nucleophilic substitution reaction with the amino groups present in the anti-RSV monoclonal antibody (mAb). The detection was performed using electrochemical impedance spectroscopy, and the data were evaluated using equivalent circuits. The charge transfer resistance values increased as PGE was modified in the following order: PGE &lt; PGE/polymer &lt; PGE/polymer/mAb &lt; PGE/polymer/mAb/virus. 100 ng of mAb was used, and the immobilization times for mAb and blocker were 3 h and 50 min, respectively. The response time for RSV immobilization was 30 min. The limit of detection was 22.54 PFU mL<sup>−1</sup>, and the limit of quantification was 75.12 PFU mL<sup>−1</sup>, with a linear range from 50 – 2000 PFU mL<sup>−1</sup>, demonstrating that the proposed immunosensor is a viable alternative for the detection of RSV.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141646430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Composite cathode Gd0.2Ce0.8O1.9–SrFe1−xTixO3-δ for Nicotiana tabacum-derived carbon fuel-based direct carbon fuel cell 基于烟草衍生碳燃料的直接碳燃料电池的 Gd0.2Ce0.8O1.9-SrFe1-xTixO3-δ 复合阴极
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-15 DOI: 10.1007/s10008-024-06000-7
Mubushar Majeed, Amjad Ali, Farhan Anwer, Bilal Mazhar, Ghulam Mustafa, Rizwan Raza, Chen Xia
{"title":"Composite cathode Gd0.2Ce0.8O1.9–SrFe1−xTixO3-δ for Nicotiana tabacum-derived carbon fuel-based direct carbon fuel cell","authors":"Mubushar Majeed,&nbsp;Amjad Ali,&nbsp;Farhan Anwer,&nbsp;Bilal Mazhar,&nbsp;Ghulam Mustafa,&nbsp;Rizwan Raza,&nbsp;Chen Xia","doi":"10.1007/s10008-024-06000-7","DOIUrl":"10.1007/s10008-024-06000-7","url":null,"abstract":"<div><p>As an electrochemical device that converts the chemical energy of fuel directly into electrical energy, the fuel cell is a new alternative technology that uses fuel from renewable sources and generates power for sustainable development and energy security. Among various types of fuel cells, the direct carbon fuel cell (DCFC) has higher efficiency because carbon fuel has higher energy density than liquid or gas fuel. However, the current development of DCFCs is still limited by the sluggish activity of the cathode reaction. In this study, a new composite cathode made of Gd<sub>0.2</sub>Ce<sub>0.8</sub>O<sub>1.9</sub> (GDC) and SrFe<sub>1−<i>x</i></sub>Ti<sub>x</sub>O<sub>3–<i>δ</i></sub> (SFT) is developed for a <i>Nicotiana tabacum</i>-derived carbon fuel-based DCFC. The structural, optical, and electrochemical properties of the materials are systematically evaluated. X-ray diffraction analysis results show a cubic structure of GDC and cubic perovskite phase of SFT in the sample, with crystallite sizes of 37 and 15 nm, respectively. Ultraviolet–visible spectroscopy reveals an indirect band gap which exhibits a red shift. Fourier transform infrared spectroscopy confirms the presence of Ce–O, Sr–Ti–O, and Fe–O functional groups in all the samples. Scanning electron microscopy analysis shows the morphology and particle size of the materials. The sample Gd<sub>0.2</sub>Ce<sub>0.8</sub>O<sub>2-<i>δ</i></sub>–SrFe<sub>0.96</sub>Ti<sub>0.04</sub>O<sub>1.<i>9</i></sub> exhibits the highest electrical conductivity of 4.96 S cm<sup>−1</sup> in an oxygen atmosphere at 600 °C and a higher power density of 40 mW cm<sup>−2</sup> at 600 °C compared to other samples using <i>Nicotiana tabacum</i> carbon fuel. These findings indicate that the developed composite cathode is an efficient cathode for low-temperature DCFCs.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141645249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Monitoring the curing, degradation and moisture ingress into alkyl 2-cyanoacrylate adhesives using electrochemical impedance spectroscopy 利用电化学阻抗谱监测 2-氰基丙烯酸酯烷基粘合剂的固化、降解和水分渗入情况
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-15 DOI: 10.1007/s10008-024-06003-4
Kevin Raheem, John Cassidy, Bernard Ryan, Anthony Betts
{"title":"Monitoring the curing, degradation and moisture ingress into alkyl 2-cyanoacrylate adhesives using electrochemical impedance spectroscopy","authors":"Kevin Raheem,&nbsp;John Cassidy,&nbsp;Bernard Ryan,&nbsp;Anthony Betts","doi":"10.1007/s10008-024-06003-4","DOIUrl":"10.1007/s10008-024-06003-4","url":null,"abstract":"<div><p>Electrochemical impedance spectroscopy (EIS) was employed in an attempt to gain insight into the mechanisms of ethyl 2-cyanoacrylate (ECA) curing (polymerisation) and bonding on aluminium alloy 2024 metal. EIS can detect ionic movement, adsorption processes, charge transfer and storage occurring at an adhesive/substrate interface and/or in a bulk bond line during curing. Low-frequency capacitance measurements demonstrated sensitivity to surface polymerisation reactions and were modelled using an equivalent circuit model with two time constants in series. At a frequency of 1 kHz, changes in the dielectric polymer could be readily followed with time, confirmed by employing a crown ether to accelerate the polymerisation process. Hydrolytic degradation of poly-ECA bonds at a stainless steel interface was also investigated. An equivalent circuit model containing a number of circuit components comprising pore, charge transfer and diffusional impedances, along with polymer film, double layer and diffusional capacitances (represented by constant phase elements), was developed. Three regions were identified in the frequency domain and ascribed to processes taking place at the polymer/electrolyte and polymer/metal oxide interfaces. In short, EIS can be employed to follow the rate of polymerisation of ethyl-2-cyanoacrylate and also the degradation of the resulting polymer in saline solution.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-024-06003-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141645575","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}
引用次数: 0
Investigation of polyaniline electrodeposition on hydrophilic/hydrophobic carbon cloth substrates for symmetric coin cell supercapacitors 研究在亲水/疏水碳布基底上电泳聚苯胺以制造对称钮扣电池超级电容器
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-15 DOI: 10.1007/s10008-024-06009-y
A. H. Shabi, Abdulmajid A. Mirghni, Syed Shaheen Shah, Mostafa M. Mohamed, Abubakar Dahiru Shuaibu, Arshad Hussain, Saheed Adewale Ganiyu, Md. Abdul Aziz
{"title":"Investigation of polyaniline electrodeposition on hydrophilic/hydrophobic carbon cloth substrates for symmetric coin cell supercapacitors","authors":"A. H. Shabi,&nbsp;Abdulmajid A. Mirghni,&nbsp;Syed Shaheen Shah,&nbsp;Mostafa M. Mohamed,&nbsp;Abubakar Dahiru Shuaibu,&nbsp;Arshad Hussain,&nbsp;Saheed Adewale Ganiyu,&nbsp;Md. Abdul Aziz","doi":"10.1007/s10008-024-06009-y","DOIUrl":"10.1007/s10008-024-06009-y","url":null,"abstract":"<div><p>This research innovatively produced polyaniline-coated carbon cloth (PANI@CC) using an electrochemical deposition process, highlighting the impact of carbon cloth substrate characteristics on the performance of symmetric supercapacitors in a coin cell setup. The study compared the electrochemical performance of hydrophilic and hydrophobic, soft, and hard carbon cloth substrates through cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy. The PANI@0-N (hydrophilic soft carbon cloth) substrate showcased superior electrochemical properties, achieving a maximum specific capacitance of 113.3 F g<sup>−1</sup> at a current density of 0.1 A g<sup>−1</sup>, with a noteworthy rate capability of 88.6%. After 2000 galvanostatic charge–discharge cycles at 1 A g<sup>−1</sup>, the developed symmetric coin cell supercapacitor retained 74% of its initial capacitance, demonstrating notable durability and efficiency. This underscores the significance of substrate selection in the direct synthesis approach for optimizing supercapacitor performance, making the PANI@0-N-based coin cell a promising option for supercapacitor applications.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141646161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Correction to: Enhanced electrical properties of CuO:CoO decorated with Sm2O3 nanostructure for high-performance supercapacitor 更正为用 Sm2O3 纳米结构装饰的 CuO:CoO 增强了高性能超级电容器的电气性能
IF 2.5 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-13 DOI: 10.1007/s10008-024-06007-0
Vinayak Adimule, Vinay S. Bhat, Rajeev Joshi, Sheetal Batakurki, Gurumurthy Hegde, Basappa C. Yallur
{"title":"Correction to: Enhanced electrical properties of CuO:CoO decorated with Sm2O3 nanostructure for high-performance supercapacitor","authors":"Vinayak Adimule, Vinay S. Bhat, Rajeev Joshi, Sheetal Batakurki, Gurumurthy Hegde, Basappa C. Yallur","doi":"10.1007/s10008-024-06007-0","DOIUrl":"https://doi.org/10.1007/s10008-024-06007-0","url":null,"abstract":"","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141608784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Multiple comparisons of acetylene black–based rigid composite electrodes: comprehensive evaluation of chemical properties and electrochemical sensing potentialities 乙炔黑基刚性复合电极的多重比较:化学特性和电化学传感潜力的综合评估
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-13 DOI: 10.1007/s10008-024-06012-3
Rafael da Silva, Lucas Gomes da Silva Catunda, Rafael Martos Buoro
{"title":"Multiple comparisons of acetylene black–based rigid composite electrodes: comprehensive evaluation of chemical properties and electrochemical sensing potentialities","authors":"Rafael da Silva,&nbsp;Lucas Gomes da Silva Catunda,&nbsp;Rafael Martos Buoro","doi":"10.1007/s10008-024-06012-3","DOIUrl":"10.1007/s10008-024-06012-3","url":null,"abstract":"<div><p>We report the comparison of multiple acetylene black (AB) rigid carbon composites for electrochemical purposes exploring several binders, including one (polyurethane) from a renewable source of castor oil. The acetylene black–based composites presented less roughness and increased surface homogeneity evinced by AFM and SEM images within the micrometer range. Contact angle analysis and Raman spectra confirmed a high degree of surface functionalization associated with structural defects on AB even when the base conductive material is associated with a non-conductive binder. The acetylene black-castor oil electrode presented superior performance (lower resistance to charge transfer and increased peak currents) when compared to its graphite counterparts regardless of the mechanical activation. The proposed electrode presented an excellent electrochemical performance in analyzing contaminants of emerging concern when compared to glassy carbon electrodes. The sustainable aspect of this work is evinced considering the room temperature synthesis, low cost of the AB, and renewable castor oil binder source.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141608783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Biogenic synthesis of a nanocomposite based on gold nanoparticles and exfoliated graphite nanoplatelets as an electrocatalyst for methyldopa detection 生物合成基于金纳米颗粒和剥离石墨纳米片的纳米复合材料,作为检测甲基多巴的电催化剂
IF 2.5 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-11 DOI: 10.1007/s10008-024-05997-1
Milena Melo Vidi, Luan Gabriel Baumgarten, Eduardo Constante Martins, Edson Roberto Santana, Juliana Priscila Dreyer, João Paulo Winiarski, Iolanda Cruz Vieira
{"title":"Biogenic synthesis of a nanocomposite based on gold nanoparticles and exfoliated graphite nanoplatelets as an electrocatalyst for methyldopa detection","authors":"Milena Melo Vidi, Luan Gabriel Baumgarten, Eduardo Constante Martins, Edson Roberto Santana, Juliana Priscila Dreyer, João Paulo Winiarski, Iolanda Cruz Vieira","doi":"10.1007/s10008-024-05997-1","DOIUrl":"https://doi.org/10.1007/s10008-024-05997-1","url":null,"abstract":"<p>In this study, we report the development of an electrochemical sensor modified with exfoliated graphite nanoplatelets (xGnP) and gold nanoparticles (AuNP) synthesized using green grape plant extract (<i>Vitis vinifera L.</i>). The modified electrode, denoted as xGnP/AuNP-Grape/GCE, was successfully applied for the determination of methyldopa (MD) using square wave voltammetry (SWV). The characterization of the AuNP-Grape was performed using UV–Vis and ATR-FTIR spectroscopies, while transmission electron microscopy and X-ray diffraction were employed to analyze the xGnP-AuNP-Grape nanocomposite. The electrochemical properties of the modified electrodes were investigated using electrochemical impedance spectroscopy and cyclic voltammetry. AuNP-Grape/GCE and xGnP-AuNP-Grape/GCE exhibited a remarkable electrocatalytic effect of 250 mV towards MD compared to the bare glassy carbon electrode (GCE). In addition, notably, the utilization of xGnP-AuNP-Grape/GCE as the working electrode induced a change in the electrochemical behavior of MD from irreversible to reversible when compared to GCE. SWV was optimized with appropriate parameters, and a calibration plot for methyldopa was constructed within the concentration range of 0.082–14 µmol L<sup>‒1</sup>. The obtained limits of detection and quantification were 0.024 and 0.082 µmol L<sup>‒1</sup>, respectively. The proposed xGnP/AuNP-Grape/GCE electrochemical platform demonstrated excellent stability and sensitivity, offering a simple and rapid method for the quantification of methyldopa. The findings of this study contribute to the development of efficient electrochemical sensors for pharmaceutical and clinical analysis and demonstrate the versatility of using plant extract-mediated synthesis of AuNP in sensor applications.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Determination of levodopa using a glassy carbon electrode modified with TiO2 nanoparticles and carbon nanotubes in real samples 在实际样品中使用经 TiO2 纳米粒子和碳纳米管修饰的玻璃碳电极测定左旋多巴
IF 2.6 4区 化学
Journal of Solid State Electrochemistry Pub Date : 2024-07-11 DOI: 10.1007/s10008-024-05978-4
Fatemeh Ebrahimi, Amir Abbas Rafati, Ahmad Bagheri
{"title":"Determination of levodopa using a glassy carbon electrode modified with TiO2 nanoparticles and carbon nanotubes in real samples","authors":"Fatemeh Ebrahimi,&nbsp;Amir Abbas Rafati,&nbsp;Ahmad Bagheri","doi":"10.1007/s10008-024-05978-4","DOIUrl":"10.1007/s10008-024-05978-4","url":null,"abstract":"<div><p>This study presents a novel sensor for the detection of levodopa (LD) utilizing a glassy carbon electrode modified with a TiO<sub>2</sub>/MWCNT nanocomposite. Structural analysis confirmed the suitability of the nanocomposite for sensor fabrication, revealing enhancements in effective surface area and sensitivity. Characterization studies employing SEM, EDX, and FT-IR analyses provided insights into the composition and morphology of the modified electrode. The sensor exhibited exceptional performance metrics, including a wide linear detection range (19.6–545 µM), low detection limit (2.51 µM), high repeatability (78.1%), and remarkable average recovery rates in real samples (99.86%). Minimal interference from interfering species further demonstrated its practical utility. Moreover, the sensor’s direct applicability in diverse sample matrices, without the need for sample separation, highlighted its versatility and convenience. Comparative analysis revealed the sensor’s performance to be comparable to established methods, offering a cost-effective and streamlined approach to LD measurement. Overall, the modified glassy carbon electrode with TiO<sub>2</sub>/MWCNT nanocomposite presents a clear, suitable, and stable electrocatalytic response, promising significant advancements in biosensing technology for LD detection.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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