Journal of Electroanalytical Chemistry最新文献

{"title":"Development of new cathode materials for all-iron redox flow batteries using hard carbon-based composites containing niobium pentoxide","authors":"Wallace de Jesus Moura ,&nbsp;Isabella Campos Batista ,&nbsp;Lindomar Gomes De Sousa ,&nbsp;Débora Vilela Franco ,&nbsp;Rafael Vicentini ,&nbsp;Raíssa Venâncio ,&nbsp;Hudson Zanin ,&nbsp;Leonardo Morais Da Silva","doi":"10.1016/j.jelechem.2024.118694","DOIUrl":"10.1016/j.jelechem.2024.118694","url":null,"abstract":"<div><div>We report in this study new cathodes for all-Fe RFBs synthesized using carbon flakes dispersed in plasticizing and hardening agents to obtain hard and dense carbon (HC) materials in the absence and presence (HC-Nb) of niobium pentoxide (Nb₂O₅). These cathode materials exhibited excellent resistance to wear in acidic solutions and larger potential intervals for water stability (<em>e.g</em>., 1200–1300 mV) compared to conventional graphite (<em>e.g</em>., 800 mV). These characteristics decreased the parasitic occurrence of hydrogen evolution reaction (HER) using a laboratory-made battery cell during the charging process. The latter was based on the Fe⁰/Fe²⁺ and Fe²⁺/Fe³⁺ redox couples present in the anode and cathode compartments, respectively. The different <em>ex-situ</em> and <em>in-situ</em> characterization studies evidenced that the presence of Nb₂O₅ in HCs substantially changed their physicochemical properties. The highest heterogenous kinetic rate constant (<em>k</em>⁰) representing the electrocatalytic activity for electron transfer was verified for the cathode containing 10 wt.% Nb₂O₅. An electromotive force (EMF) of 1.053 V was verified for the fully charged all-Fe RFB. Galvanostatic charge–discharge (GCD) studies revealed excellent coulombic efficiency (&gt; 88 %) after 300 cycles. A pH control by acid addition as a function of the battery operation is necessary to avoid iron hydroxide formation on the anode’s surface.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118694"},"PeriodicalIF":4.1,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422859","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}

{"title":"Tuning the composition of mixed anthraquinone derivatives towards an affordable flow battery negolyte","authors":"Mikhail M. Petrov ,&nbsp;Dmitry V. Chikin ,&nbsp;Kirill A. Karpenko ,&nbsp;Lilia Z. Antipova ,&nbsp;Pavel A. Loktionov ,&nbsp;Roman D. Pichugov ,&nbsp;Alena R. Karastsialiova ,&nbsp;Anatoly N. Vereshchagin ,&nbsp;Anatoly E. Antipov","doi":"10.1016/j.jelechem.2024.118693","DOIUrl":"10.1016/j.jelechem.2024.118693","url":null,"abstract":"<div><div>Having a long lifespan and being capable of scaling capacity and power independently, redox flow batteries (RFB) offer great opportunities for energy storage. However, the challenge lies in finding an ideal electrolyte. The most mature version of RFB utilizes vanadium solutions and suffers from rising and highly volatile prices of this metal. To address this, organic electrolytes are gaining attention, as they can be obtained from abundant feedstocks. Among those, Anthraquinone-2,7-disulfonic acid (2,7-AQDS) solutions are particularly prominent, demonstrating reversible and fast redox kinetics coupled with reasonable solubility. This paper explores the possibility of synthesizing 2,7-AQDS together with other electroactive compounds (2,6-AQDS, 2-AQS) through the reaction of anthraquinone sulfonation. It shows that obtained mixtures act as electrolytes without any purification or separation, while synthesis conditions can adjust mixture composition and hence their redox behavior. Although the performance of anthraquinone-bromine RFB utilizing these mixtures exhibits a trade-off between power and stability, the best of them are comparable or even superior to 2,7-AQDS. For instance, RFB with a mixture free of 2-AQS demonstrates an energy efficiency of 76.4 % and a capacity fade rate of 0.04 %/cycle at a current density of 75 mA cm⁻². The specific capacity of such mixtures can reach 70 Ah L⁻¹, which makes them promising and affordable RFB negolyte.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118693"},"PeriodicalIF":4.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422856","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}

{"title":"Polyoxometalate-derived anti-aggregation MoC nanoparticles for efficient hydrogen evolution in basic and acidic media","authors":"Junwei Sun ,&nbsp;Xiaoming Li ,&nbsp;Yue Wang ,&nbsp;Juan Yang ,&nbsp;Hongwei Luo ,&nbsp;Xiaoyan Zhang ,&nbsp;Junfeng Chen","doi":"10.1016/j.jelechem.2024.118691","DOIUrl":"10.1016/j.jelechem.2024.118691","url":null,"abstract":"<div><div>As a cost-effective alternative to Pt-based catalysts, molybdenum carbide (MoC) exhibits considerable potential for catalysing hydrogen evolution reaction (HER) in both alkaline water electrolyzers and proton exchange membrane water electrolyzers. However, achieving ampere-level current densities at low overpotentials remains challenging for MoC-based electrocatalysts. In this study, we utilized electrospinning technology followed by a subsequent heat treatment to successfully synthesize monodisperse MoC nanoparticles (approximately 4.3 nm) embedded in carbon nanofibers. The resultant self-supporting one-dimensional molybdenum carbide@nitrogen-doped carbon nanofiber (MoC-A@NCNF), prepared with polyoxometalate anion (POM) and polyvinylpyrrolidone (PVP), exhibits excellent anti-aggregation behavior. Benefiting from its high specific surface area and one-dimensional conductive network structure, the MoC-A@NCNF displays outstanding hydrogen evolution reaction (HER) performance in both 1 M KOH and 0.5 M H₂SO₄, achieving overpotentials of 491 mV and 568 mV at a current density of 1 A cm⁻², respectively. Furthermore, it exhibits exceptional electrochemical stability during prolonged HER testing under both acidic and alkaline conditions.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118691"},"PeriodicalIF":4.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422865","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}

{"title":"First principles study of V2CT2-based MXenes materials in oxygen reduction and oxygen evolution reactions","authors":"Di Zhang ,&nbsp;Songshan Gao ,&nbsp;Xinyu Yang ,&nbsp;Long Lin ,&nbsp;Zhongzhou Dong","doi":"10.1016/j.jelechem.2024.118686","DOIUrl":"10.1016/j.jelechem.2024.118686","url":null,"abstract":"<div><div>The development of bifunctional ORR/OER electrocatalysts with low cost, high activity and sustainable cycle plays an important role in improving the performance of new green energy storage and conversion devices to alleviate the energy crisis and environmental pollution. As a graphene-like two-dimensional inorganic layered compound with unique electrochemistry, MXenes materials have attracted more and more attention in the field of electrocatalytic applications. In this paper, based on the first-principles calculation method based on density functional theory (DFT) and quantum mechanics, an effective scheme for designing efficient ORR/OER bifunctional electrocatalysts by introducing Pd/Pt single atoms to regulate the electronic structure of V₂CT₂ (T = O, F) is proposed. Firstly, we discussed the stability of the designed series of single-atom catalysts by calculating the formation energy, binding energy and molecular dynamics simulation. Secondly, by comparing the theoretical overpotentials of these single-atom catalysts for ORR and OER, we found that among the designed SACs, V₂CO₂-Pd, V₂CF₂-Pd and V₂CO₂-V_O-Pt are catalysts with good bifunctional catalytic activity for ORR/OER. Our work provides some guidance for the application of MXenes materials in the field of electrocatalysis.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118686"},"PeriodicalIF":4.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422774","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}

{"title":"Free gallium (III) determination with AGNES (Absence of Gradients and Nernstian Equilibrium Stripping)","authors":"Adnívia S.C. Monteiro,&nbsp;Encarna Companys,&nbsp;Jaume Puy,&nbsp;Josep Galceran","doi":"10.1016/j.jelechem.2024.118684","DOIUrl":"10.1016/j.jelechem.2024.118684","url":null,"abstract":"<div><div>Gallium is being extensively used in technological applications. Increasing emissions to the environment classify it as an emerging contaminant. Speciation information, such as the free gallium concentration, [Ga³⁺], is fundamental for understanding/predicting its bioavailability and potential toxicity to biota. In this work, [Ga³⁺] in aqueous solutions at pH<!--> <!-->2 and 3 has been measured with AGNES (Absence of Gradients and Nernstian Equilibrium Stripping). The deposition times to reach equilibrium, for a fixed accumulation factor or gain, were longer than those required with other metals such as Zn, Pb, Cd and In. This is attributed to the electrodic irreversibility of the couple Ga⁰/Ga³⁺ on the mercury electrode together with low concentrations of relatively poorly labile and/or poorly reversible (for the electrodic transfer) hydroxy complexes. When the AGNES-SCP variant was applied in the Hanging Mercury Drop Electrode with radius 141 μm, and the transition time was ≤10 s, the correction of the deposited mass with a depletion factor was essential. The speciation capacity of AGNES for Ga was evaluated with the phthalate ligand at pH 3 and the experimental results obtained were very similar to the theoretical results predicted with the stability constants in the NIST and Brown-Ekberg databases.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118684"},"PeriodicalIF":4.1,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432795","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}

{"title":"Physicochemical and electrochemical investigation of lead sulphide-graphene oxide hybrid nanostructure for energy storage applications","authors":"Muhammad Kashif ,&nbsp;Shahzaib Khan ,&nbsp;Hudeel Wajahat ,&nbsp;F.F. Alharbi ,&nbsp;Abdullah G. Al-Sehemi ,&nbsp;Salma Eman ,&nbsp;Hind Alqurashi","doi":"10.1016/j.jelechem.2024.118680","DOIUrl":"10.1016/j.jelechem.2024.118680","url":null,"abstract":"<div><div>The emerging trend of advanced electrodes with greater specific capacitance (C_s) and favourable cycle life is acquiring significant attention of transition metal sulphide composites for energy storage devices. Therefore, this study demonstrates the effective creation of lead sulphide-graphene oxide (PbS/GO) nanohybrid using a simple hydrothermal method, which restricts agglomeration and enhances the electrochemical properties of the developed electrodes. The scanning electron microscopy (SEM) examination verified the distribution of PbS flakes on GO sheets, improving the performance. The nanohybrid employed as an electrode in supercapacitors demonstrated a C_s of 1371.57 F/g at a current density (j) of 1 A/g in a 2.0 M KOH using a three-electrode setup. Remarkably, it retained an exceptional specific capacitance of 94.12 % over 4,000 cycles. Furthermore, the asymmetric configuration (PbS/GO//AC) achieves a more excellent C_s of 251 F/g at 1 A/g and an impressive energy density of 17 Wh/kg when operated at a power density of 252 W/kg. The outstanding electrochemical performance results from the extensive surface area (121.61 m²/g) and mesoporous nature of the hybrid electrode, which provides additional passages and electroactive sites for electrolyte interaction during the oxidation–reduction phenomenon. Additionally, the uniform decoration of PbS nanoflakes on conductive GO nanosheets decreases the agglomeration and contributes to the pseudocapacitive behaviour. Therefore, the exceptional performance of the PbS/GO hybrid electrode holds considerable promise for the advanced supercapacitors used in portable and wearable electronics.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"974 ","pages":"Article 118680"},"PeriodicalIF":4.1,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432785","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}

{"title":"Porous and defective NiCo2O4 spinel derived from bimetallic NiCo-based Prussian blue analogue for enhanced hydrogen production via the urea electro-oxidation reaction","authors":"Xiaolei Zhang ,&nbsp;Junyi Ding ,&nbsp;Sizhuan Li ,&nbsp;Yinpeng Zhang ,&nbsp;Shuai Zhang ,&nbsp;Minghua Wang ,&nbsp;Linghao He ,&nbsp;Bin Hu","doi":"10.1016/j.jelechem.2024.118687","DOIUrl":"10.1016/j.jelechem.2024.118687","url":null,"abstract":"<div><div>The efficient hydrogen production via overall water splitting is seriously restrained by the slow kinetics of the oxygen evolution reaction (OER). The substantially low potential for the urea electro-oxidation reaction (UOR) can tackle this problem by replacing the OER at the electrolyzer anode. Herein, the NiCo₂O₄ spinel with rich oxygen vacancies (O<em>_v</em>) and embedded within mesoporous carbon network (O<em>_v</em>-NiCo₂O₄@mC) was derived from NiCo-based Prussian blue analogous (NiCo PBA) and exploited as the bifunctional electrocatalyst of the UOR and OER for boost the hydrogen production via the overall water splitting. Benefiting to the regular skeleton and abundant dual metal sites of NiCo PBA, the derived O<em>_v</em>-NiCo₂O₄@mC comprises abundant oxygen vacancies, lattice defects, and adjustable electron structure. These features afford O<em>_v</em>-NiCo₂O₄@mC the improved UOR ability, showing the potential of 1.33 V versus reversible hydrogen electrode (RHE) at the current density of 10 mA cm⁻², along with a small Tafel slopes of 31 mV dec⁻¹, remarkably lower than that of the OER (1.51 V versus RHE, Tafel slope = 85 mV dec⁻¹). The UOR performance of O<em>_v</em>-NiCo₂O₄@mC substantially outperforms to most of the reported Co and/or Ni-based electrocatalysts. Impressively, the assembled two-electrode urea-assisted overall water splitting device shows the small voltage for the hydrogen production (1.43 V versus RHE) and good long-term stability. The present work can provide a new alternative for the efficient hydrogen production using the MOFs-derivatives.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118687"},"PeriodicalIF":4.1,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358427","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}

{"title":"Initial stages of silver electrodeposition on a model Pt(111) single-crystal substrate from ethaline","authors":"Elena B. Molodkina,&nbsp;Alexander V. Rudnev,&nbsp;Maria R. Ehrenburg","doi":"10.1016/j.jelechem.2024.118688","DOIUrl":"10.1016/j.jelechem.2024.118688","url":null,"abstract":"<div><div>Deep eutectic solvents (DES) are a new class of solvents with unique properties that are very promising media for the electroplating of metals and alloys. Knowledge about the regularities of metal electrodeposition is noticeably promoted by studies on model single crystal electrodes with a known well-ordered surface structure. In this work, we investigate the regularities of under- and overpotential deposition (upd and opd, respectively) of silver from a silver chloride solution in ethaline on a Pt(111) single crystal surface. For a better understanding of the occurring processes, we employ a complex approach involving electrochemical and in situ and ex situ microscopic techniques. We show that the process of gradual surface poisoning is observed on Pt(111) in the potential range in which no massive solvent degradation is yet observed. We also observe that the extent of this process largely depends on the employed potential of contact between the electrode and the solution and the studied potential range.</div><div>The presence of Ag upd on Pt(111) in ethaline is demonstrated using voltammetric and in situ STM data. The available results and charge analysis are used to compare the Ag upd processes in ethaline and in aqueous solutions. We discuss the number of Ag adlayers on Pt(111), the effect of the potential of initial contact of the electrode with the solution and cycling history, and the possibility of anion upd and formation of coadsorbate between Ag adatoms and upd chloride anions (chlorine adatoms). We also demonstrate that upd Ag is not completely desorbed until high anodic potentials, where it seems to catalyze the solvent oxidation. Phase deposition of silver from ethaline on Pt(111) starts at almost zero overpotentials, which is probably related to the presence of the already deposited Ag adlayer. Even at very low overpotentials the deposit includes both large planar 2D crystallites and 3D crystallites formed on the surface defects and at the edges of the flat deposit islands. As the overpotential grows, the epitaxiality is gradually lost; the deposit becomes unshaped and the amount of 3D crystallites and their height increase.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118688"},"PeriodicalIF":4.1,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358332","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}

{"title":"Smartphone-based portable sensor with Bi-MOF nanocomposite for Cd (II) in vegetable samples","authors":"Liping Deng ,&nbsp;Liangmei Rao ,&nbsp;Xinyu Lu ,&nbsp;Yutang Wang ,&nbsp;Weiming Zhang ,&nbsp;Xuemin Duan ,&nbsp;Yangping Wen ,&nbsp;Zhuohua Kong ,&nbsp;Jingkun Xu","doi":"10.1016/j.jelechem.2024.118681","DOIUrl":"10.1016/j.jelechem.2024.118681","url":null,"abstract":"<div><div>The accumulation of heavy metal cadmium (Cd) in the food chain poses a serious threat to human health, necessitating the development of rapid, on-site, and portable detection methods for Cd (II). Herein, we developed a smartphone-based electrochemical sensor for portable determination of Cd (II) in vegetables using a bismuth metal–organic framework (Bi-MOF) nanocomposite. Prismatic rod-like Bi-MOF was hydrothermally synthesized using trimesic acid as organic ligands, and subsequently, carboxyl-functionalized multi-walled carbon nanotubes (COOH-MWCNTs) were incorporated to form Bi-MOF nanocomposite network. The smartphone-based electrochemical sensor enables rapid, sensitive, and portable detection of Cd (II) in vegetable samples using Bi-MOF/COOH-MWCNTs-modified screen-printed carbon electrodes (SPCE). A comparative analysis of traditional electrochemical sensors coupled with desktop computer for linear voltametric responses for Cd (II) in the range of 0.2–500 ng/mL with a limit of detection (LOD) of 0.07 ng/mL using Bi-MOF/COOH-MWCNTs-modified glassy carbon electrodes (GCE), the portable sensor demonstrated good linear range in 0.7–350 ng/mL with a LOD of 0.22 ng/mL. This work introduces a novel approach for on-site and portable detection of Cd (II) in agricultural products.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118681"},"PeriodicalIF":4.1,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422864","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}

{"title":"Exploiting a carbon black paste electrode modified with palladium nanoparticles entrapped in aluminum hydroxide matrix for selective detection of 2(3)-t-Butyl-4-hydroxyanisole antioxidant in biodiesel samples","authors":"Ricky de La Martini P. Penha ,&nbsp;Adeilton P. Maciel ,&nbsp;Cícero W.B. Bezerra ,&nbsp;Flavio S. Damos ,&nbsp;Rita C.S. Luz","doi":"10.1016/j.jelechem.2024.118683","DOIUrl":"10.1016/j.jelechem.2024.118683","url":null,"abstract":"<div><div>A simple and selective method for determination of 2(3)-<em>t</em>-Butyl-4-hydroxyanisole (BHA) based on carbon black (CB) paste electrode modified with Palladium nanoparticles entrapped in aluminum hydroxide matrix (PdNPAH) is described for the first time. The materials were characterized by Fourier-Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). The composition of the paste was studied using different amounts of each material. The voltammetric studies of the behavior of BHA on PdNPAH/CBP electrode demonstrated a catalytic activity for the oxidation process of BHA. Also, the voltammetric studies showed that it is possible to determine BHA in presence of 3,5-Di-<em>tert</em>-butyl-4-hydroxytoluene (BHT) and 2-(1,1-Dimethylethyl)-1,4-benzenediol (TBHQ). Under optimized conditions, the method showed a linear response for BHA from 1-5000 µmol/L and a detection limit of 0.20 µmol/L. The proposed method presented good selectivity, precision and it was successfully applied for detection of BHA in biofuel with recovery values from 98.80 % to 105.29 %, showing a good accuracy for the proposed method.</div></div>","PeriodicalId":355,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"973 ","pages":"Article 118683"},"PeriodicalIF":4.1,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422851","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}