Journal of Electrochemical Science and Engineering最新文献_第5页

Performance of magnetized tool in electrochemical micromachining on scrapped alloy wheel matrix composite 磁化刀具在报废合金轮基复合材料电化学微加工中的性能研究

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-03-13 DOI: 10.5599/jese.1660

Venugopal Palaniswamy, Thanigaivelan Rajasekaran

引用次数: 0

Electrochemical determination of vitamin B6 in pharmaceutical and energy drink samples 药物和功能饮料样品中维生素B6的电化学测定

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-03-01 DOI: 10.5599/jese.1674

Gizaw Tesfaye, M. Tessema, Negussie Negash

{"title":"Electrochemical determination of vitamin B6 in pharmaceutical and energy drink samples","authors":"Gizaw Tesfaye, M. Tessema, Negussie Negash","doi":"10.5599/jese.1674","DOIUrl":"https://doi.org/10.5599/jese.1674","url":null,"abstract":"A simple and low-cost electrochemical sensor based on poly(phenylalanine) and functionnalized multi-walled carbon nanotubes (F-MWCNTs) modified glassy carbon electrode (GCE) was developed for the determination of vitamin B6 (VB6). The surface morphology of modified glassy carbon electrodes was investigated with scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The electrocatalytic activities of the bare and modified electrodes were investigated in the presence of ferri-ferrocyanide redox couple using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The exchange current density (jo = 2462 µA cm-2) and electron transfer rate constant (ko = 0.002 cm s−1) were calculated using 5 mM K3[Fe(CN)6]. The electrochemical activity of poly(phenylalanine)/F-MWCNT/GCE towards VB6 oxidation was investigated using CV. Parameters including the number of electrons transferred (n = 2), number of protons transferred (H+ = 2), electron transfer coefficient (α = 0.51) and surface concentration of VB6 (G = 0.24 nmol cm−2) were calculated. At the optimal experimental conditions, the oxidation peak current of VB6 measured by square wave voltammetry (SWV) was found proportional to its concentration in two linear ranges of 0.5 to 20 µM and 20 to 200 µM with a low detection limit (LOD) of 0.038 µM and limit of quantification (LOQ) of 0.125 µM. Finally, the sensor was successfully used to determine VB6 in soft drink and pharmaceutical formulation samples.","PeriodicalId":15660,"journal":{"name":"Journal of Electrochemical Science and Engineering","volume":"8 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89406470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Palmyra palm flower biomass-derived activated porous carbon and its application as a supercapacitor electrode 棕榈花生物质衍生的多孔活性炭及其作为超级电容器电极的应用

Journal of Electrochemical Science and Engineering Pub Date : 2023-01-05 DOI: 10.5599/jese.1658

Vimala Raghavan, Sofia Jeniffer Rajasekaran

引用次数: 6

Corrosion cracking in Mg alloys based bioimplants 镁合金基生物植入物的腐蚀开裂

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-01-01 DOI: 10.5599/jese.1636

J. Singh, Yogita Sharma

引用次数: 5

Surface engineering and performance of biomaterials 表面工程与生物材料性能

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-01-01 DOI: 10.5599/jese.1698

Hitesh Vasudev, C. Prakash

引用次数: 9

Wolffia globosa as a biocatalyst in plant-based biofuel cells Wolffia globosa作为植物生物燃料电池的生物催化剂

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-01-01 DOI: 10.5599/jese.1547

Yolina Hubenova Hubenova, E. Hubenova, M. Mitov

{"title":"Wolffia globosa as a biocatalyst in plant-based biofuel cells","authors":"Yolina Hubenova Hubenova, E. Hubenova, M. Mitov","doi":"10.5599/jese.1547","DOIUrl":"https://doi.org/10.5599/jese.1547","url":null,"abstract":"The rootless duckweed Wolffia globosa, not explored toward electrogenicity till now, is investigated as a putative biocatalyst in Plant-based Biofuel Cells (P-BFC) for the electrical current generation and its basic metabolic changes during the polarization are depicted. After a short adaptation period, the open-circuit voltage of P-BFC, utilizing W. globosa as an anodic biocatalyst, reaches values of 630 mV. At a connected external resistor of 1 kΩ in the electric circuit, stable current densities of 170±10 mA m-2 are achieved. The electrical outputs depend on the anodic potential, reaching negative values of ca. -200 mV (vs. SHE). W. globosa produces an electrochemically active compound, acting as an electron shuttle. The polarization intensifies the W. globosa metabolism, expressed in a double increased glucose and starch content along with 1.82 times higher specific amylase activity of 70.0±2.8 U g-1 wet biomass in the organelle-enriched fractions of the explored as biocatalysts plants compared to the control. The results reveal that Wolffia globosa can be utilized as a biocatalyst in P-BFC for simultaneous electricity generation and increased carbohydrate and protein content.","PeriodicalId":15660,"journal":{"name":"Journal of Electrochemical Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71191034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consequences of hydroxyapatite doping using plasma spray to implant biomaterials 羟基磷灰石掺杂等离子体喷雾剂植入生物材料的效果

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-01-01 DOI: 10.5599/jese.1614

Amrinder Mehta, Gurbhej Singh

{"title":"Consequences of hydroxyapatite doping using plasma spray to implant biomaterials","authors":"Amrinder Mehta, Gurbhej Singh","doi":"10.5599/jese.1614","DOIUrl":"https://doi.org/10.5599/jese.1614","url":null,"abstract":"Hydroxyapatite (HAp) is still one of the most common bioactive coatings used on metal implants in orthopaedics due to its biocompatibility. The application of HAp to metallic implants can be accomplished using a variety of processes. Plasma spray (PS) coating stands out as the method of choice due to its dependability, affordability, and ability to protect metal surfaces against rust and wear. The use of HAp in medicine has been limited due to the material's unfavorable mechanical characteristics, such as brittleness, a lack of fracture toughness, and inadequate tensile strength. In addition, the remodeling durations of HAp-covered implants are significantly longer, the rate of osseointegration is significantly lower, and no antimicrobial actions or features are present in these implants. The mechanical and biological properties of HAp have been improved by applying various approaches, all of which fall under the category of surface modification tactics. Dopants are one of those strategies that are extremely successful at changing the characteristics and using them in HAp is one of those methods. As a result, this review study aims to consolidate data on implant Hap coating using the plasma spray approach and assess the benefits and problems associated with employing this method. In addition, the paper addresses how altering the structural, chemical, and mechanical features of HAp can assist in overcoming these limitations. In conclusion, it explains how the incorporation of entering the HAp structure can change the features that, when coated using the plasma spraying approach, alter the functionality of the implant.","PeriodicalId":15660,"journal":{"name":"Journal of Electrochemical Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71191418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Lignin-based porous junction for silver-silver chloride reference electrodes 银-氯化银参比电极木质素基多孔结

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-01-01 DOI: 10.5599/jese.1520

S. Breitenbach, Dominik Knapic, C. Unterweger, Christian Fuerst

引用次数: 0

Understanding cold spray technology for hydroxyapatite deposition 了解羟基磷灰石冷喷涂沉积技术

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-01-01 DOI: 10.5599/jese.1424

Gaurav Prashar, Hitesh Vasudev

引用次数: 6

Reduced graphene oxide as efficient carbon support for Pd-based ethanol oxidation catalysts in alkaline media 还原氧化石墨烯作为碱性介质中pd基乙醇氧化催化剂的高效碳载体

IF 2.2

Journal of Electrochemical Science and Engineering Pub Date : 2023-01-01 DOI: 10.5599/jese.1643

Sigrid Wolf, Michaela Roschger, Boštjan Genorio, N. Hodnik, Matija Gatalo, F. Ruiz-Zepeda, V. Hacker

{"title":"Reduced graphene oxide as efficient carbon support for Pd-based ethanol oxidation catalysts in alkaline media","authors":"Sigrid Wolf, Michaela Roschger, Boštjan Genorio, N. Hodnik, Matija Gatalo, F. Ruiz-Zepeda, V. Hacker","doi":"10.5599/jese.1643","DOIUrl":"https://doi.org/10.5599/jese.1643","url":null,"abstract":"The sluggish kinetics of the ethanol oxidation reaction (EOR) and the related development of low-cost, highly active and stable anode catalysts still remains the major challenge in alkaline direct ethanol fuel cells (ADEFCs). In this respect, we synthesized a PdNiBi nanocatalyst on reduced graphene oxide (rGO) via a facile synthesis method. The prepared composite catalyst was physicochemically characterized by SEM, STEM, EDX, ICP-OES and XRD to analyze the morphology, particle distribution and size, elemental composition and structure. The electrochemical activity and stability towards EOR in alkaline media were examined using the thin-film rotating disk electrode technique. The results reveal well-dispersed and strongly anchored nanoparticles on the rGO support, providing abundant active sites. The PdNiBi/rGO presents a higher EOR activity and stability compared to a commercial Pd/C ascribed to a high ECSA and synergistic effects between Pd, Ni and Bi and the rGO material. These findings suggest PdNiBi/rGO as a promising anode catalyst in ADEFC applications.","PeriodicalId":15660,"journal":{"name":"Journal of Electrochemical Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71190992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1