Article
Chemistry, Inorganic & Nuclear
Mihai Tibu, Nicoleta Lupu, Oana-Georgiana Dragos-Pinzaru
Summary: In this paper, CoPt nanowire arrays with different Co contents were successfully prepared by electrodeposition. The composition and crystalline structure of the as-prepared nanowires were controlled by adjusting the electrodeposition conditions and adding saccharin as an organic additive. The magnetic properties of the nanowire arrays were strongly influenced by the changes in the alloy's composition and crystalline structure.
Article
Chemistry, Multidisciplinary
Heng Wang, Guo-Min Li, Bing Li, Jing-Lin You
Summary: In this study, aluminum nanowires with irregular morphologies were prepared by template-free electrodeposition. The effects of diffusion condition and deposition potential on the morphologies were examined. The decrease of diffusion flux resulted in segmented morphologies, while a dynamic equilibrium between electrochemical reaction and Al2Cl7- diffusion caused current fluctuation and periodic variation of diameters. Controllable electrodeposition of various morphologies was achieved under restricted diffusion condition and increased overpotential. Most segmented nanowires exhibited single crystalline structure and grew in [100] orientation.
Article
Chemistry, Analytical
Shota Higashino, Yoshikazu Takeuchi, Masao Miyake, Takumi Ikenoue, Masakazu Tane, Tetsuji Hirato
Summary: The electrodeposition of Al-W alloy films using hydrated salts as W precursors allows for high alloy content even at high current densities, without negatively affecting the quality or current efficiency of the films. Analysis of the chemical speciation of Al and W ions in the ionic liquids shows differences between the dissolved species derived from hydrated salts and anhydrous salts.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Deepti Raj, Gabriele Barrera, Federico Scaglione, Federica Celegato, Matteo Cialone, Marco Coisson, Paola Tiberto, Jordi Sort, Paola Rizzi, Eva Pellicer
Summary: Dense and mesoporous FePd nanowires were successfully fabricated using template- and micelle-assisted pulsed potentiostatic electrodeposition. The structural and magnetic properties of the nanowires were investigated, and it was found that the mesoporous core and dense shell structure slightly affected the magnetic properties. Moreover, the mesoporous nanowires showed excellent performance as SERS substrates for the detection of 4,4'-bipyridine, attributed to the mesoporous morphology and the close proximity of the embedded nanowires enabling localized surface plasmon resonance.
Article
Engineering, Electrical & Electronic
Abdulcabbar Yavuz, Necip Fazil Yilmaz, Murat Artan
Summary: The study successfully prepared flexible and inexpensive electrodes using ionic liquids to form Fe-Cu alloy coatings, which exhibited good supercapacitive performance in 1 M KOH electrolyte.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Oana-Georgiana Dragos-Pinzaru, George Stoian, Firuta Borza, Horia Chiriac, Nicoleta Lupu, Ibro Tabakovic, Bethanie J. H. Stadler
Summary: CoPt nanowires with low Pt content and optimized catalytic properties for methanol oxidation reaction (MOR) were successfully synthesized by electrodeposition. By controlling the synthesis conditions and adding saccharine, the crystalline structure of the nanowires can be changed, leading to improved electrocatalytic performance. The resulting CoPt nanowires exhibit significantly higher catalytic activity than the best reported CoPt nanoparticles, making them promising catalyst candidates for MOR.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Jingling Lu, Cunying Xu, Jianru Li, Shuxian Wang, Qinqin Xiang, Xiao Chen, Yixin Hua, Yan Li
Summary: This study investigates the effects of nicotinic acid (NA) on the electrodeposition of Al-Mn alloy in aluminum chloride-1-butyl-3-methylimidazolium ionic liquids. It is found that the addition of NA increases the nucleation overpotential of Al-Mn alloy and inhibits the reduction reaction of Al(III) and Mn(II). The morphology, composition, roughness, and crystal structure of the alloy coating are strongly affected by the presence of NA.
Article
Materials Science, Multidisciplinary
Zhaoliang Yu, Wei Li, Duo Wang, Peng Liu, Ming Lu, Jiaming Li, Xiangdong Meng, Haibo Li
Summary: Ge and GeSn alloy nanowires have potential applications in nanoscale electronic and optoelectronic devices, and are important candidates for anode materials in the next-generation of lithium-ion batteries. A simple catalyst-and template-free technique is proposed for electrodeposition of SnGe nanowires, Ge nanowires, and GeSn nanowires from ionic liquid. The addition of 0.01 M GeCl4 to the SnCl2/ionic liquid electrolyte inhibits fractal growth of Sn and promotes the formation of hair-like nanowires with lengths over 50 μm, while the absence of GeCl4 leads to the formation of tree-like fractal structures. The concentration of GeCl4 in the solution significantly affects the morphology of the deposit. Taper and kinked Ge and GeSn nanowires can be directly electrodeposited from ionic liquid, and interweaving of these twisted nanowires produces a microporous structure. This method can be used for the preparation of not only Sn- and Ge-based nanowires, but also other group IV nanowires.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Engineering, Chemical
Wei Qi, Junhui He, Mengjie Li, Maolin Zhai, Long Zhao
Summary: Rhenium has important applications in various industries, but its low concentration in the Earth's crust necessitates research on its separation and extraction. This study explored the extraction of rhenium using a demulsification method with an alkyl imidazolium ionic liquid-based microemulsion. Factors such as components of the microemulsion, temperature, acid concentration, and competitive ions were considered. The study found that the components of the microemulsion, alkyl chain length, and acid concentration significantly affected the extraction efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Nabil A. N. Mohamed, Yisong Han, Andrew L. Hector, Anthony R. Houghton, Elwin Hunter-Sellars, Gillian Reid, Daryl R. Williams, Wenjian Zhang
Summary: The variation in pore size in mesoporous films produced by electrochemically assisted self-assembly (EASA) with the surfactant chain length is described. It is found that a range of pore sizes between 2 and 5 nm in diameter is available with surfactants of the form [Me3NCnH2n+1]Br, with alkyl chain lengths between C-14 and (C2)4.
Article
Chemistry, Multidisciplinary
Inam M. A. Omar, Abdo Mohammed Al-Fakih, Madzlan Aziz, Khadijah M. Emran
Summary: The study elucidated the impacts of two ionic liquids as additives on the corrosion behavior and electrodeposition mechanism of a Ni-Co alloy, with [MOFIM]I showing higher inhibition efficiency. Quantum chemical calculations were consistent with experimental results, providing insights into the correlation between molecular structures of the ionic liquids and their corrosion inhibition performance.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Xuwen Guo, Zhichao Chen, Yanping Huang, Hao Lv, Yaru Wang, Lizhi Sun, Kai Song, Ben Liu
Summary: Ternary noble metal-metalloid-nonmetal PdBS alloy mesoporous nanospheres with three-dimensional central-radial pore channels were prepared via precise control in reduction and nucleation growth, showing remarkably improved electrocatalytic performance. This finding extends knowledge on the rational design and targeted synthesis of novel noble metal-metalloid-nonmetal alloys for catalysis and other applications.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Zhiwei Wang, Teng Wu, Xiao Geng, Juanjian Ru, Yixin Hua, Jiaojiao Bu, Yu Xue, Ding Wang
Summary: Nanoscale Fe-Cr alloy is electrodeposited in a Choline chloride-ethylene glycol deep eutectic solvent (ChCl-EG DES) successfully. The concentration ratio of Fe(II) to Cr(III) affects the reduction potential difference and enables control over the Cr content of the alloy deposit.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Environmental
Xueshan Sun, Xuezhen Wang, Yingli Wan, Yafei Guo, Tianlong Deng, Xiaoping Yu
Summary: This article introduces a functional ionic liquid with high electroconductivity and extraction rate, which can effectively separate Li+ and Mg2+ from high Mg/Li ratio brine. The extraction system can efficiently extract Mg2+ and Ca2+ and can be used for extracting metallic Mg from lithium-rich brine, avoiding the dehydration and high temperature melting steps in the traditional electrolysis process. This technology is simple and low energy consumption, providing a new strategy for the effective exploitation of Li and Mg resources in salt lake brine.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Nestor Tafur, Alba Somoza, Ana Soto
Summary: Better utilization of already developed oil reservoirs is crucial, and Enhanced Oil Recovery techniques play an important role in achieving this. Blending multiple surfactants is a common approach when individual surfactants are not effective, but determining the optimal conditions for application can be challenging due to numerous variables involved. This study evaluated blends of surfactants for oil recovery and found that activity maps were useful tools in describing conditions leading to Winsor type III systems.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Materials Science, Multidisciplinary
Cristina V. Manzano, Laetitia Philippe, Albert Serra
Summary: In the last decade, nanostructuration has become a popular research topic due to the observation of interesting properties and applications. This review focuses on the synthesis, growth mechanisms, parameters, properties, and applications of ZnO nanowires grown by electrodeposition and electroless methods, revealing that the architecture of the ZnO nanowires plays a significant role in determining their properties and applications.
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
(2022)
Article
Chemistry, Physical
Raul Losantos, Manuel Montiel, Radu Mustata, Fernando Zorrilla, Luis Valino
Summary: This paper proposes a novel approach to parameterize high temperature exchange membrane fuel cells (HTPEMFC) by combining computational simulation tools and genetic algorithms. The method effectively identifies electrochemical parameters of three-dimensional fuel cell models and decouples the fluid dynamic resolution from the electrochemistry one. The results demonstrate that a unique set of electrochemical parameters can be identified from a set of measured operating conditions that fits the 3D model to the target polarisation curve.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Polymer Science
Asim Ali Yaqoob, Albert Serra, Showkat Ahmad Bhawani, Mohamad Nasir Mohamad Ibrahim, Anish Khan, Hajer S. Alorfi, Abdullah M. Asiri, Mahmoud Ali Hussein, Imran Khan, Khalid Umar
Summary: This study examined the performance of two graphene composite-based anode electrodes in microbial fuel cells (MFCs) and their ability to remove heavy metal ions from synthetic wastewater. The results showed that GO-PANI-Ag had higher energy efficiency and removal rate, validating the effectiveness of using new materials as electrodes in MFCs.
Article
Chemistry, Analytical
Muhammad Taqi-uddeen Safian, Siti Hajar Sekeri, Asim Ali Yaqoob, Albert Serra, Mohd Dzahir Jamudin, Mohamad Nasir Mohamad Ibrahim
Summary: The increasing generation of biomass waste in agriculture and wood processing industries calls for more sustainable utilization rather than burning or accumulation. Advances in green technology have led to the use of eco-friendly materials, such as plant fiber materials, which have shown promising potential in altering emulsion technology.
Article
Chemistry, Physical
Elvira Gomez, Roberto Cestaro, Laetitia Philippe, Albert Serra
Summary: Complex tunable visible-light-driven Aurivillius-phase-based micro- and nanostructured photocatalysts were fabricated using a novel sequential process based on electrochemical deposition and thermal treatment, which showed excellent photocatalytic performance in degrading and mineralizing antibiotics under solar radiation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Electrochemistry
Elvira Gomez, Arnau Fons, Roberto Cestaro, Albert Serra
Summary: The study presents a detailed investigation on the electrodeposition process of CoNi in a biocompatible deep eutectic solvent, showcasing the ability to tailor elemental compositions and morphology of the deposits. The materials prepared using this method showed promising results in catalytic potential, particularly in degrading the antibiotic tetracycline. The work demonstrates a versatile and environmentally friendly route for electrodepositing CoNi in DESs to develop platforms with high catalytic activity.
ELECTROCHIMICA ACTA
(2022)
Article
Engineering, Environmental
Roberto Cestaro, Laetitia Philippe, Albert Serra, Elvira Gomez, Patrik Schmutz
Summary: In this study, electrodeposited manganese oxides (MnyOx) films were used as a visible-light-driven photocatalyst for the removal and mineralization of Tetracycline (TC) antibiotics. The best performing manganese oxide showed 92.4% TC mineralization efficiency after 180 min of LED visible illumination. Hydroxyl radicals (center dot OH) were found to be the main active species responsible for the TC degradation. The degradation of the oxide surface structure was identified as the key factor limiting the photocatalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Alejandro Clemente, Manuel Montiel, Felix Barreras, Antonio Lozano, Ramon Costa-Castello
Summary: This study presents a vanadium redox flow battery model that considers the most important variables in the system. The model is divided into electrochemical, thermal, hydraulic, and voltage submodels. Analytic analysis is used to reduce the system order, and a calibration of the model parameters is conducted using real experimental data. The model is validated by comparing real measured voltage with estimated voltage. Results from short and long-term operation are presented for state of charge and state of health estimation validation.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Elvira Gomez, Arnau Fons, Roberto Cestaro, Albert Serra
Summary: In this study, efficient heterogeneous catalysts with multiple active sites were successfully synthesized for the activation of peroxymonosulfate (PMS) to degrade persistent organic pollutants. The CoNi-based catalysts, fabricated through a cost-effective and eco-friendly process, demonstrated exceptional efficiency in the degradation and mineralization of tetracycline. The effects of various factors on the degradation and mineralization processes were also investigated.
Article
Electrochemistry
Freja Bech Holde, Paula Sebastian-Pascual, Kim Nicole Dalby, Elvira Gomez, Maria Escudero-Escribano
Summary: This study presents an environmentally safe method for preparing Ir oxide thin films by galvanic displacement reaction. The deposition of IrO2 films on gold substrates using non-toxic solvents and appropriate GDR conditions improves the activity and stability of the films, thus optimizing the hydrogen production efficiency of PEM electrolyzers.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Raul Losantos, Manuel Montiel, Radu Mustata, Fernando Zorrilla, Luis Valino
Summary: This paper proposes a methodology for characterizing electrochemical parameters in non-isothermal three-dimensional (3D) simulation models of fuel cell stacks. The methodology utilizes easily measurable data and combines iterative methods and genetic algorithm optimization techniques to achieve reasonable computational cost. The effectiveness of the methodology is demonstrated through its application on a real scale fuel cell stack, with good agreement between the model and experimental data.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Environmental
Alejandro Bembibre, Majdi Benamara, Mokhtar Hjiri, Elvira Gomez, Hatem R. Alamri, Ramzi Dhahri, Albert Serra
Summary: The study explores the efficient mineralization of tetracycline antibiotics using Ca-doped ZnO nanopowders under LED visible light and ultrasound irradiation. The catalyst exhibited high efficiency, reusability, and minimal sonophotocorrosion, especially in natural waters' pH range.
CHEMICAL ENGINEERING JOURNAL
(2022)
