Electrocatalysis最新文献

筛选
英文 中文
Fabrication of Well-dispersed IrO2 Anchored on rGO Composite for High-performance OER Electrocatalyst Application by Microwave-Assisted Method 微波辅助法制备高性能OER电催化剂用分散良好的氧化石墨烯锚定IrO2复合材料
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-10-17 DOI: 10.1007/s12678-023-00844-9
Pyeongkang Yoo, Mino Woo, Hae In Lee, Hee Soo Kim, Dong-Ha Lim
{"title":"Fabrication of Well-dispersed IrO2 Anchored on rGO Composite for High-performance OER Electrocatalyst Application by Microwave-Assisted Method","authors":"Pyeongkang Yoo,&nbsp;Mino Woo,&nbsp;Hae In Lee,&nbsp;Hee Soo Kim,&nbsp;Dong-Ha Lim","doi":"10.1007/s12678-023-00844-9","DOIUrl":"10.1007/s12678-023-00844-9","url":null,"abstract":"<div><p>Efficient and cost-effective electrolysis technique is prerequisite for industrial scale hydrogen production. This study demonstrates fabrication of electrochemical catalyst in the form of a composite structure generated through rapid oxidation using microwave (MW) of self-assembled IrO<sub>2</sub> nanoparticles on reduced graphene oxide (rGO). MW-IrO<sub>2</sub>/rGO catalysts were synthesized using the microwave-assisted aqueous solution method, and its physical/chemical structure, morphology, and oxygen evolution reaction (OER) properties were evaluated depending on the power of microwave. The composite structure with rGO support and small particle size of IrO<sub>2</sub> allow homogeneous dispersion, and large adsorption area, which dramatically enhances the electron and proton transports. The increased electrochemical surface area resulted in excellent performance of OER. Moreover, this study suggests a simple catalyst preparation method, leading to acceleration of manufacturing speed and cost saving. Thus, this work provides new insights into a facile microwave-assisted rapid oxidation method for efficient electrochemical applications such as PEM electrolysis cells.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"891 - 900"},"PeriodicalIF":3.1,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134796911","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
Electrodeposited Pd Nanoparticles onto Fe3O4-S-rGO for Methanol Electro-oxidation Fe3O4-S-rGO表面电沉积Pd纳米粒子用于甲醇电氧化
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-10-17 DOI: 10.1007/s12678-023-00845-8
Rukan Suna Karatekin, Sedef Kaplan
{"title":"Electrodeposited Pd Nanoparticles onto Fe3O4-S-rGO for Methanol Electro-oxidation","authors":"Rukan Suna Karatekin,&nbsp;Sedef Kaplan","doi":"10.1007/s12678-023-00845-8","DOIUrl":"10.1007/s12678-023-00845-8","url":null,"abstract":"<div><p>A series of Pd/Fe<sub>3</sub>O<sub>4</sub>@S-rGO was synthesized under various deposition times of Pd and their catalytic activity was investigated in alkaline media via chronoamperometry (CA), cyclic voltammetry (CVs), and electrochemical impedance spectroscopy (EIS) for the methanol oxidation reaction. For the S source, sodium dodecylbenzene sulfonate (SDBS) was used to obtain ultrafine Fe<sub>3</sub>O<sub>4</sub> particles and enhance the graphene layer properties. Through the characterization measurements, it is concluded that Pd was deposited successfully onto Fe<sub>3</sub>O<sub>4</sub>@S-rGO (S and Fe<sub>3</sub>O<sub>4</sub> dual-doped reduced graphene oxide) with nanoscale cubic lattice nanostructure. In the presence of Fe<sub>3</sub>O<sub>4</sub>, the band gap of Pd<sub>450</sub>/ITO decreased from 3.46 to 1.74 eV. The band gap of fabricated catalyzes changed with the deposition time of Pd. In addition, the synergistic effect between Pd and Fe<sub>3</sub>O<sub>4</sub> enhances the catalytic activity of the electrode toward methanol oxidation when compared bulk Pd electrode. The Pd<sub>450</sub>/Fe<sub>3</sub>O<sub>4</sub>@S-rGO electrocatalyst showed a current density of 22.3 mA cm<sup>−2</sup> at a scan rate of 30 mV s<sup>−1</sup> with remarkable long-term stability in 0.5 M methanol in 1 M NaOH. This value is 2.2 times higher than the Pt/C (10 mAcm<sup>−2</sup>) catalyst under the same conditions. With modifying Fe<sub>3</sub>O<sub>4</sub> the Tafel slope of Pd<sub>450</sub>/ITO decreased from 180 to 118 mVdec<sup>−1</sup>.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"901 - 911"},"PeriodicalIF":3.1,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134878368","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
Electrochemical Estimation of Cd and Cu Ions Simultaneously Using a Modified MgO/Fe2O3 Nanocomposite/Carbon Paste Electrode 改性MgO/Fe2O3纳米复合材料/碳糊电极对Cd和Cu离子的电化学评价
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-10-09 DOI: 10.1007/s12678-023-00843-w
Keriman M. Abd-Elsabur, Mohamed Abd-Elsabour, Fawzy H. Assaf, Ibrahem M. A. Hasan
{"title":"Electrochemical Estimation of Cd and Cu Ions Simultaneously Using a Modified MgO/Fe2O3 Nanocomposite/Carbon Paste Electrode","authors":"Keriman M. Abd-Elsabur,&nbsp;Mohamed Abd-Elsabour,&nbsp;Fawzy H. Assaf,&nbsp;Ibrahem M. A. Hasan","doi":"10.1007/s12678-023-00843-w","DOIUrl":"10.1007/s12678-023-00843-w","url":null,"abstract":"<div><p>Heavy metals are serious inorganic pollutants that need to be monitored in the hydrosphere with simple and cheap methods. Herein, a new sensor was fabricated by modifying a carbon paste electrode with MgO/Fe<sub>2</sub>O<sub>3</sub> nanocomposite for simple, rapid, accurate, and highly sensitive simultaneous determination of Cd (II) and Cu (II) using differential pulse anodic stripping voltammetry. The electrochemical behavior of the constructed sensor was examined, and all parameters were optimized including deposition potential, time, pH, and scan rate. For Cd (II) and Cu (II), the respective detection limits were determined to be 3.3 × 10<sup>−11</sup> M and 3.6 × 10<sup>−11</sup> M, and the respective quantification limits were 1.1 × 10<sup>−10</sup> M and 1.2 × 10<sup>−10</sup> M. The sensor estimated Cd (II) and Cu (II) in Nile river, tap, and bottled real water samples with high recoveries ranging from 99 to 117%.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"875 - 890"},"PeriodicalIF":3.1,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00843-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134795699","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
One-Step Ni-Co Alloy Nanoparticles Electrodeposition from Leach Liquor of Spent Ni-MH Batteries Using a Deep Eutectic Solvent and Its Use Towards Urea Electrooxidation 废镍氢电池浸出液一步电沉积镍钴合金纳米颗粒及其在尿素电氧化中的应用
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-09-18 DOI: 10.1007/s12678-023-00842-x
A. Basilio-Brito, M. Landa-Castro, W. Sánchez-Ortiz, S. Rivera-Hernández, M. Romero-Romo, E. Arce-Estrada, J. Aldana-González, M. Palomar-Pardavé
{"title":"One-Step Ni-Co Alloy Nanoparticles Electrodeposition from Leach Liquor of Spent Ni-MH Batteries Using a Deep Eutectic Solvent and Its Use Towards Urea Electrooxidation","authors":"A. Basilio-Brito,&nbsp;M. Landa-Castro,&nbsp;W. Sánchez-Ortiz,&nbsp;S. Rivera-Hernández,&nbsp;M. Romero-Romo,&nbsp;E. Arce-Estrada,&nbsp;J. Aldana-González,&nbsp;M. Palomar-Pardavé","doi":"10.1007/s12678-023-00842-x","DOIUrl":"10.1007/s12678-023-00842-x","url":null,"abstract":"<div><p>This work reports a simple, low-cost, and environmentally friendly method to synthesize Ni-Co alloy nanoparticles (Ni-CoNPs) onto a glassy carbon electrode, GCE, and its use towards the efficient urea electrooxidation in basic aqueous media. Ni-CoNPs were directly electrodeposited onto the GCE surface, GCE/Ni-CoNPs by a single potentiostatic step, from the leached liquor of the cathode powder of spent Ni-MH batteries using the reline deep eutectic solvent, DES, as leaching agent, and electrolytic bath. The GCE/Ni-CoNPs were immersed in a 1 M KOH, 0.33 M urea aqueous solution and used as anode for urea electrochemical oxidation. The mass activity of this electrode depicted a maximum value of 27,900 mAmg<sup>−1</sup> cm<sup>−2</sup> at ca 0.5 V vs. Ag/AgCl and a steady state mass activity of 1690 mAmg<sup>−</sup><sup>1</sup> cm<sup>−2</sup> during the potentiodynamic and potentiostatic evaluation. The performance of the GCE/Ni-CoNPs electrode reported in this work is similar or better than other electrodes reported for this purpose using more sophisticated, time-consuming, and costly methods.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"869 - 874"},"PeriodicalIF":3.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134797037","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
Nanostructured Ce/CeO2-rGO: Highly Sensitive and Selective Electrochemical Hydrogen Sulfide (H2S) Sensor 纳米结构Ce/CeO2-rGO:高灵敏度和选择性电化学硫化氢(H2S)传感器
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-09-14 DOI: 10.1007/s12678-023-00839-6
Shivsharan M. Mali, Shankar S. Narwade, Balaji B. Mulik, Vijay S. Sapner, Shubham J. Annadate, Bhaskar R. Sathe
{"title":"Nanostructured Ce/CeO2-rGO: Highly Sensitive and Selective Electrochemical Hydrogen Sulfide (H2S) Sensor","authors":"Shivsharan M. Mali,&nbsp;Shankar S. Narwade,&nbsp;Balaji B. Mulik,&nbsp;Vijay S. Sapner,&nbsp;Shubham J. Annadate,&nbsp;Bhaskar R. Sathe","doi":"10.1007/s12678-023-00839-6","DOIUrl":"10.1007/s12678-023-00839-6","url":null,"abstract":"<div><p>Herein, cerium/cerium oxide nanoparticles have been decorated on reduced graphene oxide (Ce/CeO<sub>2</sub>-rGO) for room temperature electrochemical determination of H<sub>2</sub>S in 0.5 M KOH. There is a superior linear correlation between the peak current density and H<sub>2</sub>S content in the tested range of 1–5 ppm. Moreover, comparison to other abundant gases such as CO<sub>2</sub> shows no response at the potential of H<sub>2</sub>S oxidation, confirming no interference with H<sub>2</sub>S detection. It also reveals that the Ce/CeO<sub>2</sub>-rGO nanocomposite is a highly selective and sensitive system for the determination of H<sub>2</sub>S gas. Ce/CeO<sub>2</sub>-rGO synthesized by a simple chemical approach and further characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), field emission-scanning electron microscopy (FE-SEM), coupled energy dispersive analysis of X-ray (EDAX), and BET-surface area measurement confirms the porosity of synthesized nanomaterials and homogeneous decoration of Ce/CeO<sub>2</sub> nanoparticles on rGO sheets. The electrochemical studies, i.e., linear sweep voltammetry (LSV), of Ce/CeO<sub>2</sub>-rGO demonstrate the electrochemical H<sub>2</sub>S sensing at room temperature and for lower gas concentration (1 ppm) detection. The sensing mechanism is believed to be based on the modulation of the current and applied potential path across the electron exchange between the cerium oxide and rGO sites when exposed to H<sub>2</sub>S.</p><h3>Graphical Abstract</h3><p>One-pot synthesis of Ce/CeO<sub>2</sub>-GO hybrid nanostructure is of immense significance for H<sub>2</sub>S gas sensors. Here is a new superficial synthetic way intended for the synthesis of Ce/CeO<sub>2</sub>-GO nanocomposites through the sol–gel technique. Herein, we depict that the consequential Ce/CeO<sub>2</sub> NPs decorated on graphene oxide sheet material can give competent electrocatalysts for the H<sub>2</sub>S oxidation reaction in an alkaline condition. The current density of 5.9 mA/cm<sup>2</sup> on the tiny potential of 2.5 mV vs. SCE demonstrates huge catalytic bustle and stability.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"857 - 868"},"PeriodicalIF":3.1,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134796637","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
Electrocatalytic Oxidation of Glycerol using Electrolessly Deposited CuNiSnP Electrocatalysts Supported on Carbon in Alkaline Media 碳负载CuNiSnP电催化剂在碱性介质中催化氧化甘油的研究
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-08-30 DOI: 10.1007/s12678-023-00840-z
Wasu Chaitree, Joongjai Panpranot
{"title":"Electrocatalytic Oxidation of Glycerol using Electrolessly Deposited CuNiSnP Electrocatalysts Supported on Carbon in Alkaline Media","authors":"Wasu Chaitree,&nbsp;Joongjai Panpranot","doi":"10.1007/s12678-023-00840-z","DOIUrl":"10.1007/s12678-023-00840-z","url":null,"abstract":"<div><p>The electro-oxidation of glycerol (EOG) has gained wide attention as an alternative to producing value-added chemicals for glycerol valorization. In this study, a multimetallic electrocatalyst containing copper (Cu), nickel (Ni), tin (Sn), and phosphorus (P) was supported on a carbon catalyzed substrate (CCS) using an electroless deposition technique and evaluated for EOG. The effect of the electroless deposition time (15, 30, and 45 min) was also studied. Characterization of the CuNiSnP/CCS electrocatalyst via X-ray diffraction, scanning electron microscopy, and inductively coupled plasma optical emission spectroscopy revealed the formation of a thin-film morphology containing Cu as the main species on the surface and covering the carbon substrate. The electrochemical performance evaluation showed that the electrocatalyst obtained after 30 min of electroless deposition produced the maximum current density (6.5 mA/cm<sup>2</sup>). The multimetallic composition of CuNiSnP/CCS provided better reaction performance than related tri- (CuNiP/CCS and NiSnP/CCS), bi- (NiP/CCS), and monometallic (Cu/CCS) composites according to the peak current densities for the forward (<i>i</i><sub><i>f</i></sub>) and backward (<i>i</i><sub><i>b</i></sub>) oxidation<i>,</i> the <i>i</i><sub><i>f</i></sub>/<i>i</i><sub><i>b</i></sub> ratio, and the onset potential. Furthermore, CuNiSnP/CCS exhibited more stable and stronger resistance to poisoning. Overall, this study demonstrates the potential of the new electrode material CuNiSnP/CCS as an effective electrocatalyst for EOG.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"840 - 856"},"PeriodicalIF":3.1,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43653964","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 Novel Multilayer Fiber Mesh Electrode for Ammonia Nitrogen Removal from Wastewater 一种新型的多层纤维网电极去除废水中的氨氮
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-08-19 DOI: 10.1007/s12678-023-00841-y
Liyan Liao, Jiaxin Guo, Yibo Li, Yalin Wang, Diwen Ying, Jinping Jia
{"title":"A Novel Multilayer Fiber Mesh Electrode for Ammonia Nitrogen Removal from Wastewater","authors":"Liyan Liao,&nbsp;Jiaxin Guo,&nbsp;Yibo Li,&nbsp;Yalin Wang,&nbsp;Diwen Ying,&nbsp;Jinping Jia","doi":"10.1007/s12678-023-00841-y","DOIUrl":"10.1007/s12678-023-00841-y","url":null,"abstract":"<div><p>A novel multilayer fiber mesh electrode was developed and manufactured at the pilot scale to treat ammonia nitrogen wastewater containing chlorine. The performance of the new electrode was investigated and evaluated in a lab-scale reactor and a pilot-scale reactor. The results of electrochemical characterization methods showed that the multilayer fiber mesh electrode had better performance than the plate electrode under the same conditions. Moreover, the ammonia removal efficiency with the multilayer fiber mesh electrode reached 100% in 30 min, which was five times that with the traditional plate electrode. The influences of different operating parameters, such as current density, pH value, and chloride ion concentration, were investigated in the lab-scale reactor. Interestingly, the ammonia removal efficiency in the reactor with the multilayer fiber mesh electrode was higher when the pH value was lower, which was totally different from the results using the plate electrode. The main reason for this phenomenon is that more active chlorine free radicals generated at low pH values can be effectively utilized in the through-flow reactor with the multilayer fiber mesh electrode. Furthermore, the current efficiency of the reaction and the anode efficiency of the electrode showed good performance. Furthermore, this configuration was effective in removing ammonia from real leachate in the pilot-scale test. The multilayer fiber mesh electrode in flow-through mode was shown to be a promising material for the treatment of ammonia nitrogen wastewater containing chloride ions.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"829 - 839"},"PeriodicalIF":3.1,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43166045","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
Simultaneous Electrocatalytic Measurement of Dopamine and Acetaminophen by Nanosensor Based on Ag@Polyoxometalate@Reduced Graphene Oxide and Ionic Liquid 基于纳米传感器的多巴胺和对乙酰氨基酚同时电催化测定Ag@Polyoxometalate@还原氧化石墨烯和离子液体
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-08-12 DOI: 10.1007/s12678-023-00838-7
Haniyeh Shafiei, Seyed Karim Hassaninejad-Darzi
{"title":"Simultaneous Electrocatalytic Measurement of Dopamine and Acetaminophen by Nanosensor Based on Ag@Polyoxometalate@Reduced Graphene Oxide and Ionic Liquid","authors":"Haniyeh Shafiei,&nbsp;Seyed Karim Hassaninejad-Darzi","doi":"10.1007/s12678-023-00838-7","DOIUrl":"10.1007/s12678-023-00838-7","url":null,"abstract":"<div><p>A novel electrochemical nanosensor was established for the simultaneous measurement of dopamine (DA) and acetaminophen (AC). The nanosensor was achieved by modification of carbon paste electrode (CPE) by Ag nanoparticle, polyoxometalate, reduced graphene oxide (Ag@POM@rGO), and ionic liquid (IL). The electrochemical behaviors of DA and AC were evaluated by Ag@POM@rGO-IL/CPE and various electrochemical methods. Design-Expert software by response surface methodology (RSM) approach was utilized to consider the interaction between the different factors. The best electrochemical response was attained with 0.01 g of IL and 0.04 g of Ag@POM@rGO in the modified electrode, phosphate buffer solution (0.1 M, pH 7.0), and a sweep rate of 0.07 V s<sup>−1</sup>. In the optimum situation, the calibration curves for DA and AC were achieved in a square wave voltammetry (SWV) manner, and linear dynamic ranges (LDR) were obtained to be 0.05–115.04 µM and 0.1–137.90 µM for DA and AC, respectively. The limit of detection (LOD) was attained to be 17.0 for DA and 37.0 nM for AC. The Ag@POM@rGO-IL/CPE showed good stability, productivity and repeatability, and advanced recovery, and it has a little price and low background current. Also, the usage of this nanosensor was studied by measuring the DA and AC in the human plasma by means of worthy recovery. This technique is easy, rapid, and cheap and can be utilized as a significant device in the quantitative analysis of the medicinal product.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"811 - 828"},"PeriodicalIF":3.1,"publicationDate":"2023-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45181923","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: 1
Electrodeposition of Ni-Co-S Electrocatalyst Using 2,5-dimercapto-1,3,4-thiadiazole as S Precursor for Hydrogen Evolution Reaction at Neutral pH 以2,5-二巯基-1,3,4-噻二唑为S前驱体的Ni-Co-S电催化剂在中性pH下电沉积的析氢反应
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-07-18 DOI: 10.1007/s12678-023-00837-8
Yeosol Yoon, Sehyun Yoo, Taeho Lim
{"title":"Electrodeposition of Ni-Co-S Electrocatalyst Using 2,5-dimercapto-1,3,4-thiadiazole as S Precursor for Hydrogen Evolution Reaction at Neutral pH","authors":"Yeosol Yoon,&nbsp;Sehyun Yoo,&nbsp;Taeho Lim","doi":"10.1007/s12678-023-00837-8","DOIUrl":"10.1007/s12678-023-00837-8","url":null,"abstract":"<div><p>Among various chalcogenide materials, transition metal sulfides are known to be effective catalysts for the electrochemical hydrogen evolution reaction (HER). In particular, Ni-Co-S is a promising material for the next generation of non-precious metal HER catalysts due to its excellent HER activity in neutral pH solutions. Ni-Co-S is also advantageous in large-scale applications, as it enables relatively simple catalytic synthesis through electrodeposition. In this study, we employed a new S precursor, 2,5-dimercapto-1,3,4-thiadiazole (DMTD), for the electrodeposition of Ni-Co-S, instead of the conventional S precursor, thiourea (TU). Ni-Co-S synthesized with DMTD (Ni-Co-S<sub>DMTD</sub>) showed enhanced HER activity at neutral pH compared to that synthesized with TU (Ni-Co-S<sub>TU</sub>). It has been found that this improvement in activity is due to the large surface area and high S content of Ni-Co-S<sub>DMTD</sub>. The S content and HER activity of Ni-Co-S<sub>DMTD</sub> depend on the concentration of DMTD. At the optimal DMTD concentration (12 mM), Ni-Co-S<sub>DMTD</sub> exhibited an overpotential of 303 mV at a current density of 10 mA cm<sup>− 2</sup> and a Tafel slope of 99 mV dec<sup>− 1</sup> in a phosphate buffer solution (pH 7.4).</p><h3>Graphical Abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 5","pages":"800 - 809"},"PeriodicalIF":3.1,"publicationDate":"2023-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4721673","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 Review on Monitoring of Organic Pollutants in Wastewater Using Electrochemical Approach 电化学法监测废水中有机污染物的研究进展
IF 3.1 4区 化学
Electrocatalysis Pub Date : 2023-07-17 DOI: 10.1007/s12678-023-00834-x
Azeez Olayiwola Idris, Benjamin Orimolade, Lynn Dennany, Bhekie Mamba, Shohreh Azizi, K. Kaviyarasu, Malik Maaza
{"title":"A Review on Monitoring of Organic Pollutants in Wastewater Using Electrochemical Approach","authors":"Azeez Olayiwola Idris,&nbsp;Benjamin Orimolade,&nbsp;Lynn Dennany,&nbsp;Bhekie Mamba,&nbsp;Shohreh Azizi,&nbsp;K. Kaviyarasu,&nbsp;Malik Maaza","doi":"10.1007/s12678-023-00834-x","DOIUrl":"10.1007/s12678-023-00834-x","url":null,"abstract":"<p>This diagram illustrates the steps involved in creating a sensor utilising nanomaterial and connected to a three-electrode system. The nanomaterial is immobilised onto the surface of the working electrode. A suitable potentiostat is then employed to generate the current signal of the reaction between the sensor and the desired analyte.</p>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 5","pages":"659 - 687"},"PeriodicalIF":3.1,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00834-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4685447","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信