Journal of Electroanalytical Chemistry最新文献

{"title":"Recent progress on NiFe2O4 spinels as electrocatalysts for the oxygen evolution reaction","authors":"Zihang Feng ,&nbsp;Peng Wang ,&nbsp;Ying Cheng ,&nbsp;Yuhan Mo ,&nbsp;Xiaoyang Luo ,&nbsp;Pan Liu ,&nbsp;Rui Guo ,&nbsp;Xuanwen Liu","doi":"10.1016/j.jelechem.2023.117703","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117703","url":null,"abstract":"<div><p><span>As the main energy supply of human social activities, fossil fuels have caused serious pollution to the global environment, so it is extremely urgent to find new green renewable energy. Hydrogen has entered people's field of vision because of its high energy density, no carbon emission<span>, easy storage, transportation, etc. However, the current industrial hydrogen production<span> can still be realized by using fossil fuels, which cannot effectively solve the global pollution problem. Hydrogen production by electrocatalytic water splitting is green and has no by-products, but its development is inhibited by thermodynamic and kinetic obstacles. Therefore, developing a reasonable electrocatalyst to reduce the reaction energy barrier is a difficult problem that must be overcome. Noble metals Ir, Ru, and their oxides have good performance when used as electrocatalysts, but they cannot be used on a large scale due to the cost and content of materials. Transition metals and their oxides, especially spinel materials, also have good performance as electrocatalysts. As a typical inverse spinel, NiFe</span></span></span>₂O₄<span> is considered a promising OER electrocatalyst because of its high storage, low price, high stability, corrosion resistance<span>, and environmental friendliness. In this paper, the achievements of NiFe</span></span>₂O₄ used as electrocatalysts in recent years are reviewed. The evaluation parameters and reaction mechanism of OER were introduced firstly, then the physical and chemical properties, electronic structure, and synthesis methods of NiFe₂O₄ were introduced, and various modification strategies for improving the OER efficiency of NiFe₂O₄ in recent years were classified and analyzed emphatically, and the most effective strategies for modifying NiFe₂O₄ were found out. Then the development prospect of NiFe₂O₄ electrocatalyst has prospected.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117703"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3210286","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":"Conducting polymer-templated and nonnoble metal doped MoSe2 hybrids as bifunctional electrocatalysts for overall water splitting","authors":"Sadik Cogal ,&nbsp;Gamze Celik Cogal ,&nbsp;Matej Mičušík ,&nbsp;Alena Michalcova ,&nbsp;Miroslav Šlouf ,&nbsp;Maria Omastová","doi":"10.1016/j.jelechem.2023.117728","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117728","url":null,"abstract":"<div><p>Transition metal dichalcogenides (TMDs) are potential candidates for electrocatalytic applications due to their unique structures and intrinsic properties. In this work, the systematic synthesis of conducting polymer-templated and nonnoble metal-doped MoSe₂ hybrids was carried out using a facile hydrothermal method. Integrating conductive polyaniline, as a conductive polymer, with MoSe₂ nanosheets (MoSe₂@PANI) as well as transition metal (Co, Ni or Fe) doping provided more active sites for both H⁺ and OH^– adsorption, resulting in enhanced hydrogen and oxygen evolution performance. The Co-doped MoSe₂@PANI hybrid catalyst exhibited enhanced bifunctional electrocatalytic activity for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) in alkaline electrolytes, where Co-doping as well as polyaniline addition played key roles in boosting the HER/OER activity. As a result, the Co-doped MoSe₂@PANI catalyst exhibited overpotentials of 196 mV and 385 mV at a current density of 10 mA cm⁻² for the HER and OER, respectively. When Co-doped MoSe₂@PANI was applied as a bifunctional electrocatalyst for overall water splitting, a potential of 1.82 V was needed to achieve a current density of 10 mA cm⁻². Moreover, the Co-doped MoSe₂@PANI catalyst displayed good stability for long-term cycling. This work provides new insight into the design of metal-doped TMD/conducting polymer-based materials for electrocatalytic applications, including water electrolysis.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117728"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3463429","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":"Nano-NiFe LDH assembled on CNTs by electrostatic action as an efficient and durable electrocatalyst for oxygen evolution","authors":"Simin He,&nbsp;Ruimei Yue,&nbsp;Wentong Liu,&nbsp;Junxia Ding,&nbsp;Xiaolun Zhu,&nbsp;Nijuan Liu,&nbsp;Ruibin Guo,&nbsp;Zunli Mo","doi":"10.1016/j.jelechem.2023.117718","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117718","url":null,"abstract":"<div><p>The development of non noble metal electrocatalysts with high OER catalytic activity has become an urgent demand for water cracking. In this work, NiFe LDH nanobulks grown on CNTs were prepared by a green and simple one pot hydrothermal method. The acidified CNTs usually include hydroxyl, carboxyl and other oxygen-containing functional groups, which make the carbon tubes have a certain negative charge. The negatively charged CNTs can interact with the positively charged NiFe LDH nanobulks in an electrostatic manner, resulting in a self-assembly reaction to slow down the agglomeration of NiFe LDH nanobulks, better highlight the advantages of two-dimensional material structure, and expose greater specific surface area of activity. The introduction of CNTs can enhance the conductivity of the composite, accelerate the charge transfer in the reaction process, and further improve the OER catalytic performance of NiFe LDH/CNTs catalyst materials.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117718"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3405189","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":"Capacitive performance of electrode materials affected by the Cu2O template morphologies in graphene/polyaniline nanotube/ZIF-67 nanocages porous composite","authors":"Sara Ramandi ,&nbsp;Mohammad H. Entezari","doi":"10.1016/j.jelechem.2023.117726","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117726","url":null,"abstract":"<div><p>Graphene/polyaniline nanotube/ZIF-67 nanocages (G/PANI-NT/Z) composites were successfully prepared in a co-precipitation manner and used as electrode material for supercapacitor application. ZIF-67 nanocages, including cube and hexapod, were designed via a simple and fast one-step Cu₂O template etching route. The properties of the as-synthesized nanoparticles were perused by N₂ adsorption–desorption, X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), and electrochemical manners. In particular, the super-capacitive performance of the synthesized materials was perused by changing the morphology of the nanostructures. Results represent that the as-synthesized ZIF-67 nanocages maintain the shape and size of the Cu₂O templates with a hollow, which depicts various capacitive demeanors. Amongst, the two morphologies, the G/PANI-NT/Z-hexapod (h) composite has a larger specific capacitance of 4400 mF g⁻¹, while G/PANI-NT/Z-cubic (c) has a lower one of 3630 mF g⁻¹ at 10 mA g⁻¹ current density. This is mainly due to the presence of ZIF-67 nanocages with hexapod morphology and a larger surface area of 73.58 m²/g in the G/PANI-NT/Z-h composite, which leads to fast interfacial electron transfer and an increase in the diffusion rate of electrolyte ions for higher power density. This demonstrates G/PANI-NT/Z-h electrode is promising for applications in renewable energy storage.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117726"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3146956","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":"Effect of substituents of naphthalene diimide derivatives on electrochromic behaviours observed in proto-type devices","authors":"Subhra Nad,&nbsp;Bankim Paul,&nbsp;Sudip Malik","doi":"10.1016/j.jelechem.2023.117729","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117729","url":null,"abstract":"<div><p>Several triphenylamine end capped to substituted central naphthalenetetracarboxylic diimide based four donor - acceptor - donor type electro-active monomers (BRTPANDI, CNTPANDI, PHTPANDI, NPYTPANDI) were designed and developed to explore the effect of substituent on the formation of electro-polymers and subsequent the chromic effect of prepared films on the conductive surface. Initially, with the help of density functional theory (DFT) studies, it was observed that HOMO was located over triphenylamine unit, responsible electro-polymerization process upon oxidation, LUMO was residing on the central naphthalene core, and all substituents were not coplanar with naphthalene moiety. Also, the band gap energy was gradually decreased with the effect of strong electron withdrawing substituents on NDI core. In three electrode configuration, reversible multiple colour changes of brown to deep blue by applying voltage 0 to 1.1 V and also brown to deep pink with the voltage change of 0 to −2 V were impressively investigated with relatively good response times, optical contrast, switching stabilities, and coloration efficiencies. Polymer made of CNTPANDI might be switched upto 1200 cycles with the optimum colouration efficiency 560 cm²/C in the anodic process and 300 cycles for the cathodic process in a three electrodes configuration. Proto type devices made of p-CNTPANDI demonstrated the electrochromism operated at a potential range of 0 to 2.2 V. Besides, the device exhibited the EC memory in open-circuit condition with 50% retention of its coloured state until 27 min. The long EC memory as well as high colouration efficiency compared to other TPA based conjugated polymers suggested the potentiality of those polymer films as a power-efficient EC material for modern display applications.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117729"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3210292","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":"Effect of concentration and flow rate of electrolyte on electrochemical regeneration of activated carbon at pilot-plant scale","authors":"Borja Ferrández-Gómez ,&nbsp;Beatriz Martínez-Sánchez ,&nbsp;Diego Cazorla-Amorós ,&nbsp;Emilia Morallón","doi":"10.1016/j.jelechem.2023.117727","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117727","url":null,"abstract":"<div><p>Few research has investigated the problem of regeneration of activated carbon once it has been saturated by organic and inorganic contaminants. Among the regeneration methods, electrochemical technology is one of the most advanced, demonstrating its effectiveness in pilot-plant scale experiments using samples obtained from drinking water treatment plants. In the present study, the optimization of a parallel plate electrochemical reactor with a capacity of 15 kg of activated carbon, has been achieved regarding the electrolyte concentration and flow rate. A regeneration efficiency of approximately 90% was achieved with a 0.25 M H₂SO₄ concentration, while lower concentrations resulted in a voltage exceeding the acceptable limits for this type of installation. In addition, higher flow rates imply a higher recovery of the porous texture of the regenerated activated carbon. This is, to the best of our knowledge, the first report where these two experimental variables are optimized in a pilot-scale process with real saturated activated carbon samples with different types of pollutants adsorbed in the activated carbon.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117727"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2905063","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":"Quenching-assisted surface functionalization of metal oxide for highly enhanced electrocatalytic urea oxidation","authors":"Lei Chen ,&nbsp;Wen-Da Zhang ,&nbsp;Jingguo Yang ,&nbsp;Jiangyong Liu ,&nbsp;Zhi-Guo Gu ,&nbsp;Xiaodong Yan","doi":"10.1016/j.jelechem.2023.117706","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117706","url":null,"abstract":"<div><p>Urea oxidation reaction (UOR) is considered as a good substitute for oxygen evolution reaction (OER) because of its low theoretical onset potential. Surface modification is an effective strategy to tune the catalytic activity of the catalysts towards UOR. Here, we developed a facile and universal quenching strategy to prepare sulfate-modified NiO nanosheets (NiO@NF-20S). Compared with the pristine NiO nanosheets, the electrocatalytic performance of the NiO@NF-20S is greatly improved, showing a small potential of 1.40 V vs. RHE to deliver a current density of 200 mA cm⁻² as well as robust electrochemical stability. The outstanding electrocatalytic performance of the NiO@NF-20S is mainly ascribed to the improved surface wettability and the promoted Ni²⁺/Ni³⁺ redox reaction. The quenching strategy can be expanded to not only various kinds of functional groups from nitric acid and phosphoric acid but also other metal oxides such as NiCoO_x and NiCrO_x. This work provides a new avenue to the design of surface-functionalized metal oxide catalysts for electrocatalysis.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117706"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2907083","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":"Fabrication of blue silver substrate with 10 nm grains by an electrochemical deposition and application in SERS","authors":"Nan Zhang ,&nbsp;Lingyun Cui ,&nbsp;Xiaohui Yu ,&nbsp;Qiaozhen Yu ,&nbsp;Jianwei Zhao","doi":"10.1016/j.jelechem.2023.117700","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117700","url":null,"abstract":"<div><p>Nanosized-silver substrates with smooth surface and fine particles were fabricated by a non-cyanide pulse electrochemical deposition. The electrochemical behavior of silver electrochemical deposition was investigated with a series of electrochemical methods. Cyclic Voltammetry and chronopotentiometry showed that the overpotential was significantly reduced when silver ions were continuously deposited on the silver layer. During deposition, the nucleation mechanism gradually changed from the progressive nucleation to the instantaneous nucleation with the negative shift of potential. The effect of pulse period <em>θ</em> on the Surface Enhanced Raman Scattering performance of the substrate was investigated. Combined with Scanning Electron Microscope, X-ray diffraction, 2D SERS Mapping and Raman spectrum, the pulse period <em>θ</em> was optimized. The enhancement effect of the substrates was relatively uniform, and the enhancement factor for rhodamine 6G was 5.34 × 10⁶, the detection limit could be as low as 1.0 × 10⁻¹³ mol·L⁻¹. The optimized substrate obtained good linear range and low detection limit in the detection of contraband pigment sunset yellow, indicating that the substrate may have a good application prospect in the actual detection.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117700"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2907089","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":"Nitrogen-doped carbon-encompassed Ni nanoparticles prepared from Ni (II) cation-exchanged metal organic framework for efficient electrochemical CO2 reduction","authors":"Feng Chen ,&nbsp;Li-Li Zhang ,&nbsp;Ke-An Wang,&nbsp;Guan-Rong Zhu,&nbsp;Hai-Bin Zhu","doi":"10.1016/j.jelechem.2023.117704","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117704","url":null,"abstract":"<div><p>Carbon layer-encompassed nickel nanoparticles of core–shell structure (designated as Ni NPs@NC) show notable advantages toward electrochemical carbon dioxide reduction reaction (CO₂RR). Core-shell structured Ni NPs@NC nanoparticles anchored on the carbon matrix have been conveniently built from a cationic metal–organic framework (CPM-72 herein) which incorporates the Ni²⁺ cations through the cation exchange before high-temperature pyrolysis. The designed Ni NPs@NC catalyst exhibited impressive CO₂RR performance which could efficiently convert CO₂ into CO (carbon monoxide). In the H-type cell, a maximal CO faradaic efficiency (FE) of 86.4% was achieved at −0.8 V (vs. RHE) with a high CO partial current density (<em>j</em>_co) of −11.0 mA cm⁻². In the flow cell device, the CO FE was further improved to 98.6% with the enhanced <em>j</em>_co of −38.7 mA cm⁻². Finally, Zn-CO₂ battery test also delivered a peak power density of 0.39 mW cm⁻² at 2.65 mA cm⁻².</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117704"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2308946","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":"Investigation of electrochemical and spectroelectrochemical properties of some amino-substituted naphthoquinones (NQs)","authors":"Zeynep Ozyildiz ,&nbsp;Dilan Gezer ,&nbsp;Nahide Gulsah Deniz ,&nbsp;Zeliha Gokmen ,&nbsp;Özlem Uğuz Neli ,&nbsp;Atıf Koca","doi":"10.1016/j.jelechem.2023.117715","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117715","url":null,"abstract":"<div><p>The class of quinone compounds are excellent representatives of biologically redox-active compounds. Electron transfers such as in quinone compounds play important roles in the bioactivation of redox-active drugs, in their metabolism/catabolism, and targeted release at precise destinations and frequently promote their ligand–target<!--> <!-->interactions.<!--> <!-->Owing to the enthralling synthetic importance and pharmacological applications of 1,4-naphthoquinone derivatives, our interest is turned into a detailed electro- and photoelectrochemistry study of these pharmacophoric structures. Firstly, amino(substituted)-1,4-naphthoquinone (NQ) derivatives (<strong>2a-b</strong>, <strong>3</strong>, <strong>4a-b</strong>, <strong>5</strong>, <strong>6</strong>, <strong>7</strong>, <strong>8</strong> and <strong>9</strong>) were synthesized according to Michael addition mechanism. The exact structures of compounds were elucidated by spectroscopic methods such as FT-IR, ¹H-/¹³C NMR, MS and microanalysis. Secondly, the electrochemical behaviors of NQ derivatives are determined with voltammetric and <em>in situ</em> UV–Vis spectroelectrochemical measurements. All synthesized NQ derivatives illustrate two reductions and one oxidation processes. Voltammetric analyses of the couples of the molecules indicate electrochemical reversibility of the reductions and electrochemical irreversibility of the oxidation couples. Substituent environments of NQ structure considerably influence the chemical reversibility of the redox processes.</p></div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117715"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2308957","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}