Journal of Solid State Electrochemistry最新文献_第7页

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 2.5 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, Lucas Gomes da Silva Catunda, Rafael Martos Buoro","doi":"10.1007/s10008-024-06012-3","DOIUrl":"https://doi.org/10.1007/s10008-024-06012-3","url":null,"abstract":"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.","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":"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":"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 (Vitis vinifera L.). 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‒1. The obtained limits of detection and quantification were 0.024 and 0.082 µmol L‒1, 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.<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 2.5 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, Amir Abbas Rafati, Ahmad Bagheri","doi":"10.1007/s10008-024-05978-4","DOIUrl":"https://doi.org/10.1007/s10008-024-05978-4","url":null,"abstract":"This study presents a novel sensor for the detection of levodopa (LD) utilizing a glassy carbon electrode modified with a TiO2/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 TiO2/MWCNT nanocomposite presents a clear, suitable, and stable electrocatalytic response, promising significant advancements in biosensing technology for LD detection.","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":"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

Investigating Cd2⁺ ion sensing with palygorskite-carbon paste electrodes: optimizing performance through Doehlert design 利用alygorskite-碳浆电极研究镉2⁺离子传感：通过多勒特设计优化性能

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-07-10 DOI: 10.1007/s10008-024-06002-5

Abdellah Mourak, Mohamed Hajjaji, Rachid Idouhli, Mohy-Eddine Khadiri, Abdesselam Abouelfida

{"title":"Investigating Cd2⁺ ion sensing with palygorskite-carbon paste electrodes: optimizing performance through Doehlert design","authors":"Abdellah Mourak, Mohamed Hajjaji, Rachid Idouhli, Mohy-Eddine Khadiri, Abdesselam Abouelfida","doi":"10.1007/s10008-024-06002-5","DOIUrl":"https://doi.org/10.1007/s10008-024-06002-5","url":null,"abstract":"In this study, the potential use of a novel electrode composed of palygorskite, a natural nanomaterial with a hollow structure, for the detection of Cd2+was investigated. Moreover, the electrode’s efficiency under various operating conditions was assessed through response surface methodology. For this purpose, cyclic voltammetry, electrochemical impedance spectroscopy, and scanning electron microscopy were utilized along with Doehlert experimental design methodology. The findings demonstrated that the electrode’s sensitivity was enhanced by using HCl solution (10−2 M) as a supporting electrolyte or by increasing Cd2⁺ ion concentration. Additionally, the weights of the effects of the factors on electrode sensitivity followed the order Cd2⁺ concentration > pH > scan rate. The estimated limit of detection was approximately 2.03 × 10−4 mol/L; however, experimentally, Cd2+ concentrations as low as 5 × 10−5 M could be detected. The electrode exhibited selectivity in detecting Cd2⁺ and Pb2⁺ ions in arable land. Furthermore, it could be regenerated through a mild chemical treatment involving cation exchange. On the other hand, the electrode/solution interface could be likened to an electric circuit comprising solution resistance (162 Ω.cm2), charge transfer resistance (19.850 Ω.cm2), double-layer capacitor (11.3 × 10−6 Fs(α-1)), and Warburg diffusion element (150 s−1). These data as well as the electrode’s performance were mainly discussed in the sight of the physical and structural characteristics of palygorskite.<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":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574760","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

Focused review on factors affecting martensitic stainless steels and super martensitic stainless steel passive film in the oil and gas field 马氏体不锈钢和超级马氏体不锈钢被动膜在油气田中的影响因素综述

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-07-09 DOI: 10.1007/s10008-024-05984-6

Shoaib Malik, Ahmed Bahgat Radwan, Noora Al-Qahtani, Aboubakr Abdullah, Muhsen El Haddad, Raymundo Case, Homero Castaneda, Noora Al-Thani, Jolly Bhadra

{"title":"Focused review on factors affecting martensitic stainless steels and super martensitic stainless steel passive film in the oil and gas field","authors":"Shoaib Malik, Ahmed Bahgat Radwan, Noora Al-Qahtani, Aboubakr Abdullah, Muhsen El Haddad, Raymundo Case, Homero Castaneda, Noora Al-Thani, Jolly Bhadra","doi":"10.1007/s10008-024-05984-6","DOIUrl":"https://doi.org/10.1007/s10008-024-05984-6","url":null,"abstract":"Martensitic and super martensitic stainless steels are widely used in the oil and gas industry for general corrosion mitigation in the presence of sweet corrosion (CO2) and sour corrosion (H2S), providing a cost-effective alternative to more expensive exotic corrosion-resistant alloys. Martensitic stainless steel is an approved material for construction when selecting tubular CO2 injection wells. This work aims to review the published literature on the subject of the operation limits of martensitic stainless steel and super martensitic stainless steel in high temperatures and high pressure under corrosive environments. Stress corrosion cracking (SCC) and sulfide stress corrosion cracking (SSCC) mechanisms on martensitic and super martensitic stainless steel surfaces are thoroughly analyzed. In this review paper, we have analyzed the factors that play a crucial role in passive film growth and passivity breakdown. The present work is to review the state of the art of mechanism responsible for SCC and SSCC susceptibility in different modified martensitic stainless steel materials, which are applied to the industry and lab scale. We have reviewed the effect of different concentrations of molybdenum content on SCC and SSCC susceptibility of conventional martensitic stainless steel, modified martensitic stainless steel, and super martensitic stainless steel. The effect of tempering temperature on the SCC and SSCC performance of the martensitic and super martensitic stainless steel was also studied. We also studied the effect of different concentrations of chromium on the improved corrosion-resistant properties and stability of passivation film.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574881","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

A general approach for controllable surface structuring of metals via through-mask electrochemical micromachining under isotropic etching mode 在各向同性蚀刻模式下通过掩模电化学微加工实现金属可控表面结构的通用方法

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-07-09 DOI: 10.1007/s10008-024-06004-3

Rong Yi, Muhammad Ajmal Khan, Hui Deng

{"title":"A general approach for controllable surface structuring of metals via through-mask electrochemical micromachining under isotropic etching mode","authors":"Rong Yi, Muhammad Ajmal Khan, Hui Deng","doi":"10.1007/s10008-024-06004-3","DOIUrl":"https://doi.org/10.1007/s10008-024-06004-3","url":null,"abstract":"Surface structuring has attracted growing interest in the industry due to its potential to improve the macroscopic properties of workpieces. This work investigated the surface structuring of metals by combining thermal oxide film mask and laser lithography with isotropic etching. The metals were thermally oxidized to form a protective oxide film, laser ablation patterned the thermal oxide film, while electrochemical etching operated in the isotropic mode obtained an array of hemispherical cavities. The isotropic etching potential for different metals is taken from the mass transport region of the polarization curve. The effects of thermal oxide film thickness and laser ablation area on the uniformity of the etching holes were studied. The thermal oxidation of TA2 at 350 °C formed a 20-nm-thick oxide film, while an array of 10 μm radius hemispherical microcavities was fabricated on the laser patterning surface via electrochemical etching at 2 V for 1 min. The surface structuring of stainless steel, pure nickel, and tungsten is highly dependent on the ability of the oxide film to avoid electrochemical reactions. The feasibility of combining thermal oxidation and laser lithography with electrochemical etching is of great value for the surface structuring of metallic materials for biomedical and microsystem applications.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574880","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

One-step electrodeposited binder-free Co-MOF films and their supercapacitor application 一步法电沉积无粘结剂 Co-MOF 薄膜及其超级电容器应用

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-07-08 DOI: 10.1007/s10008-024-06001-6

Jing Cao, Yang Li, Lijun Wang, Yongmin Qiao, Jianguang Xu, Jing Li, Luping Zhu, Suna Zhang, Xixi Yan, Huaqing Xie

{"title":"One-step electrodeposited binder-free Co-MOF films and their supercapacitor application","authors":"Jing Cao, Yang Li, Lijun Wang, Yongmin Qiao, Jianguang Xu, Jing Li, Luping Zhu, Suna Zhang, Xixi Yan, Huaqing Xie","doi":"10.1007/s10008-024-06001-6","DOIUrl":"https://doi.org/10.1007/s10008-024-06001-6","url":null,"abstract":"Metal-organic frameworks (MOFs) with redox-active metal ions and a variety of organic linkers have been widely investigated as prospective electrode materials for supercapacitors. Here, we generate uniformly dense spherical particles on a nickel foam substrate by a simple and binder-free one-step electrodeposition method by adjusting the deposition conditions. The active cobalt in the Co-MOF thin films can provide a large number of redox sites for the electrochemical reaction, while the uniform binder-free Co-MOF structure can keep enough contact area with the electrolyte to reduce the ion transport resistance. As-prepared CTB-0.9 (Co-MOF with a deposition voltage of − 0.9 V) thin film has a specific capacitance of 797.5 F g−1 at a current density of 1 A g−1, exhibiting excellent electrochemical properties. An asymmetric supercapacitor with CTB-0.9 as the positive material and activated carbon as the negative material also demonstrates competitive electrochemical performances, which has a high energy density of 34.3 Wh Kg−1 at a power density of 36,317.6 W Kg−1. This work may open up an effective approach to realize the electrosynthesis of Co-MOF films, promoting the utilization of Co-based MOFs in energy storage and conversion fields.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574882","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

Preparation of layered structure MnO2/CNTs composites for high-performance salt removal by hybrid capacitive deionization 利用混合电容去离子法制备用于高性能除盐的层状结构 MnO2/CNTs 复合材料

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-07-06 DOI: 10.1007/s10008-024-05998-0

Hoang Anh Nguyen, Thi Thuy Linh Le, Minh Dai To, Anh Tuan Dao, Le Hoang Tan Doan, Van Vien Nguyen, Thai Hoang Nguyen, Viet Hai Le, Le Thanh Nguyen Huynh

{"title":"Preparation of layered structure MnO2/CNTs composites for high-performance salt removal by hybrid capacitive deionization","authors":"Hoang Anh Nguyen, Thi Thuy Linh Le, Minh Dai To, Anh Tuan Dao, Le Hoang Tan Doan, Van Vien Nguyen, Thai Hoang Nguyen, Viet Hai Le, Le Thanh Nguyen Huynh","doi":"10.1007/s10008-024-05998-0","DOIUrl":"https://doi.org/10.1007/s10008-024-05998-0","url":null,"abstract":"Capacity deionization (CDI), which combines capacitive carbon electrodes and redox-active electrodes, has emerged as a promising method for water desalination. It enables higher ion removal capacity than CDI-containing carbonaceous electrodes. Our work aimed to synthesize layered structure δ-MnO2/CNTs composites via the sol-gel method, examining their suitability for hybrid capacitive deionization (HCDI). The XRD results showed a layered structure birnessite for all composites with a distance interlayer over 7.0 Å, while the SEM images confirmed the intercopration of MnO2 particles and CNT fibers. The electrochemical evaluations evidenced the role of CNTs in enhancing the charge transfer and ionic diffusion in composites. Composite δ-MnO2/CNTs presented a specific capacitance of 160 F g−1 at a charge-discharge rate of 1 A g-1 upon 1600 cycles. In salt removal performance, the asymmetric cell AC||δ-MnO2/CNTs-1 showed the highest salt adsorption capacity (SAC) of 30.2 mg g−1 and fast average salt adsorption rate (ASAR) of 3 mg g−1 s−1 under a constant applied potential 1.4 V in 200 ppm NaCl, rendering it a promising candidate for efficient and sustainable desalination technology.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574914","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

Performance of electrochemical oxidation of Disperse Yellow 3 dye over BDD anodes 分散黄 3 染料在 BDD 阳极上的电化学氧化性能

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-07-06 DOI: 10.1007/s10008-024-05994-4

Cláudio M. de Castro, Ângela Kinoshita, Oswaldo Baffa, Paulo Olivi

{"title":"Performance of electrochemical oxidation of Disperse Yellow 3 dye over BDD anodes","authors":"Cláudio M. de Castro, Ângela Kinoshita, Oswaldo Baffa, Paulo Olivi","doi":"10.1007/s10008-024-05994-4","DOIUrl":"https://doi.org/10.1007/s10008-024-05994-4","url":null,"abstract":"Electrochemical oxidation is a promising approach for developing viable alternatives to treat polluted waters and effluents from various sources, including industrial and domestic wastewater. Since azo dyes represent an important part of the dyes used in the textile industries and because they are toxic and difficult to be treated by conventional methods, in this study, we investigate the electrodegradation of the azo dye Disperse Yellow 3 (DY3) on a boron-doped diamond (BDD) anode. Byproducts are monitored by mass spectrometry and the electrogenerated hydroxyl and sulfate free radicals are analyzed by electron paramagnetic resonance spectroscopy (EPR). Hydroxyl radical formation during the electrolysis in nitrate medium is identified by EPR technique whereas in the sulfate medium, sulfate radical is identified in addition to hydroxyl radicals. The use of different electrolysis conditions allows confirming the ability of the electrochemical method to degrade the azo dye using BDD electrodes. The catalytic effectiveness for the DY3 electrodegradation in the presence of sulfate is around 8 times more efficient than in the presence of pure nitrate solution, which is attributed to the sulfate radical formation that largely influences the BDD electroactivity, accelerating degradation.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574884","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

Defect chemistry of pyrochlore Pr2O3-ZrO2 system: the relevant thermodynamic parameters 火成岩 Pr2O3-ZrO2 系统的缺陷化学：相关热力学参数

IF 2.5 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-07-05 DOI: 10.1007/s10008-024-05995-3

J. C. C. Abrantes, E. Gomes, A. V. Shlyakhtina

{"title":"Defect chemistry of pyrochlore Pr2O3-ZrO2 system: the relevant thermodynamic parameters","authors":"J. C. C. Abrantes, E. Gomes, A. V. Shlyakhtina","doi":"10.1007/s10008-024-05995-3","DOIUrl":"https://doi.org/10.1007/s10008-024-05995-3","url":null,"abstract":"Materials of the system Pr2O3-ZrO2, namely the Pr2Zr2O7-based pyrochlores, have received considerable attention in the last decade, being a very interesting structure for defect chemistry because of its high solubility for various dopants, anti-site behaviour between A and B, and the multitude of possible combinations of A and B that are compatible in this type of structure. The compositions (Pr2-xZrx)Zr2O7+x/2 (x = 0.15), Pr2Zr2O7, and Pr2(Zr2-xPrx)O7-x/2 (x = 0.1), were prepared in previous works through the coprecipitation method and were characterised by impedance spectroscopy as a function of the oxygen partial pressure. In the present work, a defect chemistry model is proposed, and, based on the previously obtained experimental conductivity data, the relevant thermodynamic parameters were obtained by fitting, using a non-linear optimisation numerical method. The mobility of oxygen vacancies and interstitials oxygen were accurately determined, as well as the equilibrium constant of the formation of anti-Frenkel defects. It was observed that deviations from the stoichiometry promote an increase in ionic conductivity, respectively, 1.3x10-4, 1.4x10-3 and 1.7x10-2 S/cm, for the stoichiometric, excess of Pr and excess of Zr composition. The higher value obtained for the composition with an excess of Zr4+, suggests a higher interstitial oxygen mobility when compared with the oxygen vacancy mobility. It is also demonstrated that the novel applied methodology of fitting conductivity experimental data with an optimisation numerical method is suitable for determining the thermodynamically relevant parameters of defect chemistry models, allowing the prediction of material properties.","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141553148","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