Portugaliae Electrochimica Acta最新文献_第5页

Fabrication of Lead Ion Selective Electrodes (Pb-ISE) based on Poly Methyl-Methacrylate-Co-Butyl Acrylate (MB28) Thin Film Photo-polymers and Pencil Graphite Electrodes (PGEs) 基于聚甲基丙烯酸甲酯-丙烯酸丁酯(MB28)薄膜光聚合物和铅笔石墨电极的铅离子选择性电极(Pb-ISE)的制备

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400405

A. Ariri, S. Alva, D. S. Khaerudini, A. A. Aziz

{"title":"Fabrication of Lead Ion Selective Electrodes (Pb-ISE) based on Poly Methyl-Methacrylate-Co-Butyl Acrylate (MB28) Thin Film Photo-polymers and Pencil Graphite Electrodes (PGEs)","authors":"A. Ariri, S. Alva, D. S. Khaerudini, A. A. Aziz","doi":"10.4152/pea.2022400405","DOIUrl":"https://doi.org/10.4152/pea.2022400405","url":null,"abstract":"The purpose of this study was to fabricate lead ion selective electrode (Pb-ISE) sensors based on a 2:8 ratio of methyl-methacrylate-co-butyl acrylate thin film copolymers (MB28). These sensors were prepared by using a photo-polymerization technique on a pencil graphite electrode (PGE), with a poly-pyrrole-Cl (p-Py-Cl) thin film as a sensor transducer. During the Pb-ISE sensor fabrication process, the membrane composition optimization process has been carried out. The best sensor composition contained 1 mg potassium tetrakis (4-chlorophenyl) borate (KTpClPB) and 4.3 mg Pb ionophore IV. The fabricated Pb-ISE had a Nernstian number of 28.2 ± 0.5 mV/dec, a broad linear range from 10 -3 to 10 -10 M and a limit of detection (LOD) of (6.6 ± 1.6) x 10 -11 M, providing an excellent performance. In addition, the sensor showed a fairly good coefficient of effectiveness (CE) (Log K pota,b ) against K + (potassium), Na + (sodium), NH 4+ (ammonium), Mg 2+ (magnesium), Cu 2+ (copper) and Cd 2+ (cadmium) cations, which were -6.6 ± 0.2, -6.1 ± 0.2, -6.7 ± 0.2, -12.4 ± 0.3, -4.4 ± 0.2 and -6.1 ± 0.1, respectively. The Pb-ISE sensor worked best in the pH range from 3 to 8. The validation process has been carried out by comparing the measurements results of the artificial samples, at the concentrations from 25 to 100 ppm, with those of the real sample from Angke river water. The outcome was outstanding and comparable to that of the standard UV-Vis spectrophotometry measurement methods.","PeriodicalId":20334,"journal":{"name":"Portugaliae Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70920805","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

Atrazine Voltammetric Determination in the Pesticide Industries Wastewater by Gold Nanoparticles at a Modified Glassy Carbon Electrode 纳米金修饰玻碳电极伏安法测定农药废水中的阿特拉津

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400504

S. Memon, M. Waris, A. R. Sidhu, M. Zaqa

引用次数: 1

Development of Ni–Al2SiO5/Ni–SiO2 Coating Doped with Benzotriazole: Corrosion, Structural Evolution and Thermal Degradation Study 掺苯并三唑Ni-Al2SiO5 / Ni-SiO2涂层的研制:腐蚀、结构演变及热降解研究

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400605

I. Akande, O. Fayomi, A. Popoola, T. Daantjie, O. O. Oluwole, B. O. Olatunji

{"title":"Development of Ni–Al2SiO5/Ni–SiO2 Coating Doped with Benzotriazole: Corrosion, Structural Evolution and Thermal Degradation Study","authors":"I. Akande, O. Fayomi, A. Popoola, T. Daantjie, O. O. Oluwole, B. O. Olatunji","doi":"10.4152/pea.2022400605","DOIUrl":"https://doi.org/10.4152/pea.2022400605","url":null,"abstract":"Several engineering mild steel components have catastrophically failed, due to structural defects, corrosion and wear deformation. These drawbacks have prompted a continuous mild steel modification, for its higher durability and efficiency. In an attempt to improve the metal performance, Ni–SiO 2 (silicon dioxide), Ni–SiO 2 –C 6 H 5 N 3 (1H-benzotriazole), Ni–Al 2 SiO 5 (niquel + aluminum silicate) and Ni–Al 2 SiO 5 –10C 6 H 5 N 3 composite films were developed on mild steel samples, at a constant temperature of 45 ºC, and deposition time of 20 min. The coating performances were investigated by potentiodynamic polarization technique, CERT UMT-2 multi-functional tribological testing, high resolution optical microscopy and high diamond pyramid indentation. The samples were further subjected to heat-treatment, and its effects on hardness were examined. Potentiodynamic polarization study carried out in 0.5 M HCl revealed an improved anti-corrosion resistance. The hardness and wear tests showed better mild steel mechanical properties. Ni– Al 2 SiO 5 –10C 6 H 5 N 3 coated sample had better hardness and wear resistance features that those from the other samples. High resolution optical microscopy unveiled the particles homogeneous distribution throughout mild steel, with a new surface evolution. Mild steel surface morphology and other properties was optimized by Ni–SiO 2 , Ni–SiO 2 – C 6 H 5 N 3 , Ni–Al 2 SiO 5 and Ni–Al 2 SiO 5 –10C 6 H 5 N 3 coatings. Comparatively, NiAl 2 SiO 5 – C 6 H 5 N 3 coated mild steel exhibited the overall best performance characteristics, and it is thus recommended for advanced applications in petrochemical and marine industries.","PeriodicalId":20334,"journal":{"name":"Portugaliae Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70921068","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

Heat-treatment (Annealing) Effect on the Mechanical and Electrochemical Performance of a Synthesized AlCrFeMnNiV Equi-atomic High Entropy Alloy (HEA) via Arc-melting and Casting Technologies 热处理(退火)对电弧熔炼和铸造合成AlCrFeMnNiV等原子高熵合金(HEA)力学和电化学性能的影响

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400502

L. R. Kanyane, N. Malatji, A. Popoola

引用次数: 0

Mechanisms for Ultrafine Copper Powders Electrolytes Production in the Presence of Titanium Ions 钛离子存在下制备超细铜粉电解质的机理

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400505

A. Bayeshov, A. Bayeshova, U. Abduvaliyeva, A. Buketova

引用次数: 0

Influencing Parameters on the Electrodeposition of Silver from the Effluents of Mirror Industry 镜面工业废水电沉积银的影响因素

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400604

F. Bounechache, N. Ghemmit-Doulache, C. Bourouis, D. Ramdane-Terbouche

{"title":"Influencing Parameters on the Electrodeposition of Silver from the Effluents of Mirror Industry","authors":"F. Bounechache, N. Ghemmit-Doulache, C. Bourouis, D. Ramdane-Terbouche","doi":"10.4152/pea.2022400604","DOIUrl":"https://doi.org/10.4152/pea.2022400604","url":null,"abstract":"Silver (Ag) is considered as an ancient and durable precious metal that is used in different ways, due to its specific properties. The diversity of its uses has been meeting a growing worldwide demand that exceeds the Ag amount extracted from earth crust (primary resource), where a large part of this metal has been exploited. Due to its toxicity, environmental pollution resulting from industrial plants, and high economic value, Ag recovery from industrial plants (second resource) has become increasingly important for scientists. In this study, we focused on Ag recovery from the effluents of mirror industry. This was done by Ag electrodeposition on an aluminum (Al) electrode surface. This work aimed to study the effect of current intensity (CI), electrolysis time (ET), voltage (V) and temperature (T) parameters on Ag electrodeposition, in order to optimize them. According to the obtained results, the optimal parameters were a CI of 4 A, during an ET of 30 min, at 12.5 V, with a maximum T of 30 ºC. Scanning electron microscope ( SEM) analyses showed a multilayer rich Ag deposit on the Al surface, followed by a cluster of flowers of different sizes originated from reduced Ag 0 .","PeriodicalId":20334,"journal":{"name":"Portugaliae Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70921399","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

In Memoriam Prof. PhD José Costa Lima 纪念约瑟·科斯塔·利马教授博士

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400201

V. Lobo

引用次数: 0

Development of 2-aminobenzoic Acid as a Complexing Ligand for Simultaneous Adsorptive Cathodic Stripping Voltammetric Determination of Trace Copper, Lead and Cadmium 2-氨基苯甲酸络合体同时吸附阴极溶出伏安法测定痕量铜、铅和镉的研究

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400501

E. Zarei, A. Izadyar, A. Asghari, M. Rajabi

引用次数: 2

Evaluation of Souss-Massa Daraa Region Irrigation Groundwater Hydrogeochemical Characteristics and Quality: A Multivariate Statistical Approach 苏斯-马萨达拉地区灌溉地下水水文地球化学特征及水质评价:多元统计方法

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400603

M. Doubi, H. Darif, A. Koulou, R. Touir, H. Abba, M. Khaffou, H. Erramli

{"title":"Evaluation of Souss-Massa Daraa Region Irrigation Groundwater Hydrogeochemical Characteristics and Quality: A Multivariate Statistical Approach","authors":"M. Doubi, H. Darif, A. Koulou, R. Touir, H. Abba, M. Khaffou, H. Erramli","doi":"10.4152/pea.2022400603","DOIUrl":"https://doi.org/10.4152/pea.2022400603","url":null,"abstract":"The quality of the Souss-Massa Daraa (S-MD) aquifer is influenced by natural and anthropogenic contaminations. Indeed, geological formations are the main sources of mineralization in the aquifer, which compromises the potential irrigation, and threatens the sustainability of agricultural activities. In this context, hydrochemical and statistical studies were carried out on the major and secondary elements of water, based on different physico-chemical parameters, such as T °C, pH, EC (electric conductivity), NO 3- (nitrate), Cl - (chloride), HCO 3- (bicarbonate), SO 42- (sulfate), Ca 2+ (calcium ions), Mg 2+ (magnesium ions), K+ (potassium ion), Na + (sodium), Na%, Mg% and SAR ( sodium adsorption ratio ). The sampling was carried out in 2018, over two seasons (winter and summer), by analyzing 26 wells distributed over the studied plain. the water classification based on EC, it was found that 80% of the samples show very high mineralization, and 96.66% are very hard and unfit for human consumption. Also, Cl - values of most of the samples were within limits inappropriate for irrigation, but some estimated parameters, such as Na% and SAR, were within appropriate levels. In addition, according to the piper diagram, the waters are characterized by a geochemical facies of 86.66% NaCl (sodium chloride), 13.33% CaSO 4 (sulphated calcium) and Mg. Thus, the principal component analysis (PCA) shows that the region waters mineralization is of natural origin.","PeriodicalId":20334,"journal":{"name":"Portugaliae Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70921381","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

Investigation on Conductance, Acoustical and Refractive Index Behavior of Stearalkonium Chloride in Methanol at 301 K 301 K下硬脂醛氯化铵在甲醇中的电导、声学和折射率行为研究

IF 1.2

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI: 10.4152/pea.2022400102

C. Singh, S. Negi, M. Singh, K. Kishore

{"title":"Investigation on Conductance, Acoustical and Refractive Index Behavior of Stearalkonium Chloride in Methanol at 301 K","authors":"C. Singh, S. Negi, M. Singh, K. Kishore","doi":"10.4152/pea.2022400102","DOIUrl":"https://doi.org/10.4152/pea.2022400102","url":null,"abstract":"Stearalkonium chloride (SAC) ultrasonic velocity has been measured in methanol, at 301 K temperature. Jacobson’s model has been used to evaluate adiabatic and molar compressibility, molar sound velocity, solvation number, relative association, relaxation strength and other acoustical constants. The results of ultrasonic measurements of different SAC solutions in methanol indicate that there is a signification interaction between SAC and methanol molecules in diluted solutions. The conductometric study indicates that SAC behaves as a weak electrolyte in methanol. The thermodynamic constants calculated from conductance measurements for SAC solutions in methanol depict that micellization is favored over dissociation processes. The refractive index variation with SAC solutions concentrations shows a marked change in the refractive index value at critical micelle concentrations (CMC). Data treatment of obtained ultrasonic velocity, conductance measurement and refractive index shows that there is significant interaction between SAC and methanol molecules in diluted solutions, and that SAC molecules do not aggregate appreciably below the CMC.","PeriodicalId":20334,"journal":{"name":"Portugaliae Electrochimica Acta","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70919386","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