Article
Chemistry, Physical
Eli Grigorova, Pavel Markov, Boyko Tsyntsarski, Peter Tzvetkov, Ivanka Stoycheva
Summary: This study investigates the hydrogen sorption performance of materials based on 80 wt.% MgH2 with the addition of 15 wt.% Ni or V and 5 wt.% activated carbons synthesized from polyolefin wax, a waste product from polyethylene production (POW), walnut shells (CAN), and peach stones (CPS). The composition and performance of the samples are analyzed through milling, hydrogenation, X-ray diffraction, and TEM.
Article
Materials Science, Multidisciplinary
Amol Kamble, Pratibha Sharma, Jacques Huot
Summary: Zirconium addition through arc-melting enables rapid hydrogen absorption, while addition through ball-milling slows down the kinetics.
FRONTIERS IN MATERIALS
(2022)
Article
Chemistry, Physical
Mateusz Balcerzak, Jan Ternieden, Michael Felderhoff
Summary: Multi-principal element alloys and high-entropy alloys are being extensively studied for their hydrogen storage abilities. However, little attention has been given to poorly crystalline or amorphous alloys. In this study, the poorly crystalline TiVFeCuNb alloy exhibited thermal stability and even distribution of constituent elements. It absorbed hydrogen in a two-step reaction and released up to 0.59 wt% of H2 in a multistep desorption process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Physical
R. A. Savrai, A. N. Morozova
Summary: The review summarizes the results of coatings deposited by mechanical alloying on various substrates and their impact on material properties, discussing the composition, hardness, thickness, and structural features of the coatings. The analysis also includes the influence of main parameters of the mechanical alloying process on coating characteristics.
SURFACES AND INTERFACES
(2021)
Review
Chemistry, Physical
Darren P. Broom, Michael Hirscher
Summary: Research on new reversible hydrogen storage materials has the potential to accelerate the transition to a hydrogen economy, but accurately measuring storage capacities has proved challenging.
Review
Chemistry, Multidisciplinary
Muruganantham Rethinasabapathy, Seyed Majid Ghoreishian, Seung-Kyu Hwang, Young-Kyu Han, Changhyun Roh, Yun Suk Huh
Summary: This review discusses recent progress and main research trends in hydrogen isotope storage and separation, with a focus on tritium. It highlights the use of metal hydrides, nanoporous zeolites, metal organic frameworks (MOFs), and 2-D layered graphene, h-BN, and MXenes based on their diverse functionalities.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Mahvash Afzal, Nandlal Gupta, Aashish Mallik, K. S. Vishnulal, Pratibha Sharma
Summary: This study continues the computational analysis of a reactor with hexagonal honeycomb-based heat transfer enhancements, investigating the performance of a metal alloy and the reactor experimentally. It determines the gravimetric capacity and reaction kinetics of the alloy La0.9Ce0.1Ni5, while also exploring the impact of operating conditions on reactor performance. Additionally, evaporative cooling is tested for the first time as a heat removal technique for metal hydride based hydrogen storage reactors and found to significantly improve heat transfer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Magdalena Rzeszotarska, Julita Dworecka-Wojcik, Adam Debski, Tomasz Czujko, Marek Polanski
Summary: The synthesis of a complex hydride Mg-2(Fe, Cr, Ni)H-x via reactive ball milling process of AISI 316 L stainless steel and magnesium hydride was presented. The results show that the reaction between magnesium hydride and 316 L steel proceeded faster than with pure iron, resulting in a material with a cubic K2PtCl6 structure. Additionally, the obtained samples had a hydrogen content of around 4 wt% and the synthesized sample was able to absorb 1% of hydrogen at -50 degrees c through the formation of magnesium hydride.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Nozomi Noto, Shigehito Isobe, Naoyuki Hashimoto
Summary: The research evaluated the dehydrogenation properties of several hydride-hydroxide systems and found that only the KH-LiOH system showed potential for reversible hydrogen adsorption/desorption, although rehydrogenation would require extremely high pressure.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Materials Science, Multidisciplinary
Zeng-Yi Li, Yu-Jia Sun, Chen -Chen Zhang, Sheng Wei, Li Zhao, Ju-Lan Zeng, Zhong Cao, Yong-Jin Zou, Hai-Liang Chu, Fen Xu, Li-Xian Sun, Hong-Ge Pan
Summary: This paper provides a brief summary of the typical structure and hydrogenation/dehydrogenation reaction mechanism of MgH2 and comprehensively reviews strategies to effectively tune the thermodynamics and kinetics of Mg-based materials. Significant achievements have been made, but there are still some crucial issues that need to be addressed. Lastly, the future development prospects of MgH2 in energy-efficient conversion and storage are presented.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
T. Kana, J. Cermak, L. Kral
Summary: Ab initio calculations were performed on Mg2Ni compound and its hydride Mg2NiH4 doped with elements X = Al, Ga, In, Si, Ge, and Sn, showing a reduction in hydrogen desorption enthalpy for both concentrations of X. Doping with In at low concentration weakened Ni-H bonds in Mg-2(Ni-In)H-4 hydride while enhancing bonding between Mg and H atoms. These findings provide valuable insights into enhancing hydrogen storage properties in metal hydride systems.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
YongJun Cho, Sichi Li, Jonathan L. Snider, Maxwell A. T. Marple, Nicholas A. Strange, Joshua D. Sugar, Farid El Gabaly, Andreas Schneemann, Sungsu Kang, Min-ho Kang, Hayoung Park, Jungwon Park, Liwen F. Wan, Harris E. Mason, Mark D. Allendorf, Brandon C. Wood, Eun Seon Cho, Vitalie Stavila
Summary: The study demonstrates a new approach to thermodynamically stabilizing metastable metal hydrides by coordinating them with nitrogen binding sites within nanopores. This allows for low-temperature hydrogen release and regeneration of LiAlH4 at high pressure, with a predicted decrease in Al-H bond dissociation energy. Additionally, solid-state reversibility is achieved through a combination of nanoconfinement effects, Li adatom formation, and charge redistribution between the metal hydride and the host.
Article
Chemistry, Physical
S. Romankov, Y. C. Park, Y. Miyauchi, D. V. Louzguine-Luzgin, S. Komarov
Summary: W-based alloyed coatings with variable W content were fabricated on Ti and steel substrates using different combinations of W milling balls. The coatings displayed heterogeneous nanocomposite structures, and the composition and microstructures could be tailored through the selection of milling balls. The hardness and wear resistance of the coatings were influenced by the W content and microstructure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Mykhaylo Lototskyy, Vladimir Linkov
Summary: This article presents the research and development activities related to thermally driven hydrogen compression using metal hydrides. The thermally driven metal hydride hydrogen compressor (MHHC) offers advantages such as simple design, high reliability, low operating costs, and high purity of hydrogen. The article focuses on the interrelation between the properties of metal hydride materials and their hydrogen compression performances, as well as the design features and optimization methods of hydrogen compression systems. A brief techno-economic analysis comparing MHHCs with alternative hydrogen compression technologies is also provided, along with outlining the promising application niches of MHHCs.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Katia R. Cardoso, Virginie Roche, Alberto M. Jorge Jr, Flavio J. Antiqueira, Guilherme Zepon, Yannick Champion
Summary: In this study, the MgAlTiFeNi high entropy alloy was processed by high-energy ball milling under different atmospheres. The alloy showed different structures and hydrogen storage behaviors depending on the milling atmosphere. The RM-MgAlTiFeNi alloy exhibited good hydrogen storage capacity, fast absorption rate, and lower desorption temperature, while the MA-MgAlTiFeNi samples had lower electrochemical storage capacity due to the instability in alkaline solution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Mechanical
F. Moebus, J. M. Pardal, C. A. dos Santos, S. S. M. Tavares, P. A. Louzada, C. Barbosa, D. S. dos Santos
ENGINEERING FAILURE ANALYSIS
(2017)
Article
Chemistry, Physical
A. L. Cardenas, R. O. Silva, C. B. Eckstein, D. S. dos Santos
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Oncology
Bernard Lamien, Helcio Rangel Barreto Orlande, Leonardo Antonio Bermeo Varon, Rodrigo Leite Queiroga Basto, Guillermo Enrique Elicabe, Dilson Silva dos Santos, Renato Machado Cotta
INTERNATIONAL JOURNAL OF HYPERTHERMIA
(2019)
Article
Materials Science, Multidisciplinary
Amanda Ventura Castilho, Dilson Silva dos Santos
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2019)
Article
Chemistry, Physical
J. S. Belo, S. C. Marques, A. Castilho, L. M. de Oliveira, R. A. Simao, D. S. dos Santos
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Multidisciplinary Sciences
Claudia C. R. Cruz, Nilton P. da Silva, Amanda Castilho, Viviane A. Favre-Nicolin, Claudio L. Cesar, Helcio R. B. Orlande, Dilson S. Dos Santos
SCIENTIFIC REPORTS
(2020)
Article
Materials Science, Multidisciplinary
Debora Lima Molter, Mario Augusto Lopes de Castro, Dilson Silva dos Santos
Summary: This paper investigates the hydrogen embrittlement of S13Cr supermartensitic stainless steel under various cathodic potentials through experimental procedures and numerical analyses. The study reveals hydrogen diffusion behavior, deep traps existence, and the impact of hydrogen embrittlement on ductility.
Article
Nanoscience & Nanotechnology
Sara Correa Marques, Amanda Ventura Castilho, Dilson S. dos Santos
Summary: The impact of alloy element concentration on hydrogen diffusivity and trapping for two high-entropy alloys was investigated, with the difference mainly attributed to the decrease in Cr and its strong interaction with hydrogen in solid solution. Comparisons with traditional steels as a function of Cr % further supported this analysis.
SCRIPTA MATERIALIA
(2021)
Article
Environmental Sciences
Beatriz P. de Oliveira, Lorena C. S. Balieiro, Lana S. Maia, Noelle C. Zanini, Ericson J. O. Teixeira, Monique O. T. da Conceicao, Simone F. Medeiros, Daniella R. Mulinari
Summary: The search for sustainable materials in the construction sector has led to the investigation of natural materials with specific properties. This research focuses on the addition of acai waste to castor oil-based polyurethane to improve its properties. The results show that the addition of fiber reduces pore size, improves crystallinity and hydrophobicity, while also decreasing compressive strength and increasing impact resistance.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Jessica Dornelas Silva, Gisele Fernandes Chaves Macieira, Dilson Silva dos Santos, Leandro de Arruda Santos, Vicente Tadeu Lopes Buono
Summary: Ti52-xNi38Cu10Nbx alloys with Nb additions were produced and their phase constitution and morphology were investigated. The study demonstrated the importance of metastable phases and Nb content in the solidification sequence, phase distribution, and morphology of the alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
B. B. Freitas, L. R. O. Costa, T. A. A. dos Santos, D. S. dos Santos
Summary: The effect of hydrogen embrittlement on API 5L X70 steel was investigated. The results showed that the steel was able to solubilize hydrogen, reducing its impact on embrittlement.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jessica Dornelas Silva, Dilson Silva dos Santos, Leandro de Arruda Santos, Vicente Tadeu Lopes Buono
Summary: The solidification process of Ti52-xNi38Cu10Nbx alloys was evaluated using the CALPHAD method and microstructural analyses. TiNi, β-Nb/Ti, and Ti2Ni were observed as the phases. The TiNi phase acted as the matrix phase with similar Ti and Ni contents at different Nb levels. Enrichment of Ti content and depletion of Ni were expected during the solidification of the TiNi phase. The formation of Ti2Ni and β-Ti was related to the excess of Ti, while increasing Nb content hindered the formation of Ti2Ni and favored β-Ti formation. The TiNi/β-Nb eutectic was formed due to Ni depletion and Nb accumulation, and coherent ratios were obtained when Cu was considered as a substitute for Ni and Nb for Ti.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
Leonardo A. Bermeo Varon, Bruna R. Loiola, Luiz A. da Silva Abreu, Bernard Lamien, Nilton Pereira da Silva, Helcio R. B. Orlande, Dilson Silva dos Santos
XV MEDITERRANEAN CONFERENCE ON MEDICAL AND BIOLOGICAL ENGINEERING AND COMPUTING - MEDICON 2019
(2020)
Article
Materials Science, Multidisciplinary
Anderson de Farias Pereira, Sidnei Paciornik, Dilson Silva dos Santos, Paula Mendes Jardim
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2019)
Article
Physics, Applied
Catherine Gosselin, Dilson Santos, Jacques Huot
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2017)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)