Article
Energy & Fuels
Omar Mounkachi, Asmae Akrouchi, Ghassane Tiouitchi, Marwan Lakhal, Elmehdi Salmani, Abdelilah Benyoussef, Abdelkader Kara, Abdellah El Kenz, Hamid Ez-Zahraouy, Amine El Moutaouakil
Summary: The study presents an important advancement towards controlling the enthalpy and desorption temperatures of nano-structured MgH2 thin films via stress/strain and size effects, leading to a significant enhancement in the hydrogen storage properties of MgH2.
Article
Materials Science, Multidisciplinary
Chengshang Zhou, Ke Li, Tongwen Huang, Pei Sun, Li Wang, Yanshan Lu, Zhigang Zak Fang
Summary: This study demonstrates the in situ formation of nanocrystalline MgH2 by hydrogenation at room temperature and investigates the effects of hydrogenation variables on the nanostructure. The results show that hydrogenated samples under lower pressure have larger MgH2 nanocrystallites and improved dehydrogenation kinetics. The study identifies hydrogenation pressure, temperature, and defect density as critical parameters affecting the nucleation rate of MgH2.
MATERIALS & DESIGN
(2022)
Article
Energy & Fuels
Ihor Zavaliy, Vasyl Berezovets, Roman Denys, Oleksandr Kononiuk, Volodymyr Yartys
Summary: The catalytic effect of eta-Zr3V3O0.6 mixed suboxide and graphite additives on MgH2 properties in hydrogen storage and generation processes was investigated. Hydride composites were obtained by reactive ball milling and characterized using XRD and SEM. The addition of Zr3V3O0.6 and graphite significantly enhanced hydrogen absorption and desorption rates, as well as lowered the activation energy and desorption temperature. The synthesized composite showed improved kinetics and enhanced hydrogenation capacity, making it a promising material for hydrogen storage. The catalytic composites also exhibited efficient hydrogen generation in hydrolysis reaction. Overall, the research received a rating of 8 out of 10.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Song Hu, Yongliang Yong, Zijia Zhao, Ruilin Gao, Qingxiao Zhou, Yanmin Kuang
Summary: The C7N6 monolayer shows promising hydrogen storage capacities and efficiencies for H-2 storage. The interactions between H-2 molecules and C7N6 monolayer are primarily electrostatic in nature. Predicted desorption temperatures indicate the C7N6 monolayer can operate as a reversible hydrogen storage medium.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Dongqiang Gao, Liuting Zhang, Mengchen Song, Fuying Wu, Jiao Wang, Hu Zhao, Hong Li
Summary: Ni/V2O3 nanoparticles with heterostructures were successfully prepared by hydrogenating NiV-LDH. MgH2 + 7wt% Ni/V2O3 showed superior hydrogen absorption and desorption performances compared to pure MgH2 and MgH2 + 7wt% NiV-LDH. The addition of 7wt% Ni/V2O3 significantly reduced the initial discharging temperature of MgH2 and improved the hydrogen absorption capacity. Furthermore, MgH2 + 7wt% Ni/V2O3 exhibited better cycling performance and the microstructure analysis revealed the uniform distribution of heterostructural Ni/V2O3 nanoparticles. Rating: 8/10
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Hanbing Zhang, Jichao Ye, Xiaogang Wu, Xinwei Hu, Huazhou Hu, Chuanming Ma, Qingjun Chen
Summary: A La-doped Ti1.2CrMn alloy with high hydriding and dehydriding capacity was successfully developed. The introduction of La improved the hydrogenation kinetic, practical hydrogenation capacity, and cyclic property. The formation of LaH3 provided a fast diffusion channel for hydrogen atoms.
Article
Energy & Fuels
Haoyuan Li, Qiang Fu, Hongyun Qin, Xia Chen, Qicheng Zhang, Hui Zhang, Shoudong Wang, Zixu Dong, Ming Wang
Summary: In this study, the controllable and continuous MgH2 hydrolysis was achieved by using an optimized porous filter element, which provides valuable reference for continuous MgH2 hydrolysis.
Article
Metallurgy & Metallurgical Engineering
Yaokun Fu, Lu Zhang, Yuan Li, Sanyang Guo, Han Yu, Wenfeng Wang, Kailiang Ren, Wei Zhang, Shumin Han
Summary: Hydrogen storage is a crucial aspect of the hydrogen economy, and solid-state hydrogen storage is the most promising approach. In this study, a ternary transition metal sulfide FeNi2S4 with a hollow balloon structure was designed as a catalyst for MgH2 to enhance its dehydrogenation/hydrogenation performance by constructing a MgH2/Mg2NiH4-MgS/Fe system.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Engineering, Environmental
Mingxing Wei, Yijin Liu, Xiaofei Xing, Zhao Zhang, Tong Liu
Summary: By introducing a specially designed and synthesized high-entropy alloy catalyst, the hydrogen storage properties of MgH2 have been significantly improved, resulting in faster absorption and desorption rates, lower activation energy, and high capacity retention.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Metallurgy & Metallurgical Engineering
N. A. Ali, N. A. Sazelee, M. F. Md Din, M. M. Nasef, A. A. Jalil, Haizen Liu, M. Ismail
Summary: Zinc titanate synthesized by the solid-state method can effectively lower the initial temperature for dehydrogenation and enhance the re/dehydrogenation behavior of MgH2. The addition of Zn2TiO4 significantly reduces the dehydrogenation starting temperature of MgH2 and improves its kinetics performance, allowing for faster hydrogen absorption and release.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Physical
Andrea Porcheddu, Alberto Cincotti, Francesco Delogu
Summary: The study demonstrates that the absorption of hydrogen by metals is influenced by both statistical and chemical contributions, determining the shape of the absorption curve. Chemical information can only be obtained by disentangling these two contributions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
V. V. Berezovets, R. Denys, I. Yu Zavaliy, Yu Kosarchyn
Summary: MgH2-based nanocomposites were synthesized using reactive ball milling and various catalytic additives. The additives improved the hydrogen absorption-desorption kinetics and stability of the composites. Nano-Ti showed the most stable hydrogen absorption-desorption characteristics compared to TiO2 and Ti4Fe2Ox additives.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Nigel Rambhujun, Kondo-Francois Aguey-Zinsou
Summary: By tuning the chemical structure and activation energy of Grignard reagents, efficient generation of magnesium and its hydride can be achieved. For example, di-tert-butylmagnesium can decompose at low temperatures to produce MgH2 and release hydrogen at lower temperatures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Khaled Altarawneh, Mohammednoor Altarawneh
Summary: This study provides detailed insights into the bromination mechanisms of aromatic pollutants and their pathways in electronic waste. The results demonstrate the significant differences in activation energies for HBr adsorption on plain iron surfaces and oxygen pre-covered surfaces, highlighting the importance of understanding the formation and bromination routes of bromine-bearing pollutants in real scenarios.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Haiyan Xie, Kai Wang, Songling Li, Zhiliang Jin
Summary: In this paper, a dual S-scheme composite catalyst was successfully synthesized using a simple method, which showed enhanced photocatalytic hydrogen evolution rate through the optimization of its structure and active sites.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
M. Lakhal, M. Bhihi, S. Naji, O. Mounkachi, A. Benyoussef, M. Loulidi, A. El Kenz
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2015)
Article
Chemistry, Physical
M. Bhihi, M. El Khatabi, M. Lakhal, S. Naji, H. Labrim, A. Benyoussef, A. El Kenz, M. Loulidi
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2015)
Article
Chemistry, Physical
M. Lakhal, M. Bhihi, A. Benyoussef, A. El Kenz, M. Loulidi, S. Naji
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2015)
Article
Physics, Applied
G. Dimitri Ngantso, A. Benyoussef, A. El Kenz, S. Naji
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2015)
Article
Physics, Applied
S. Naji, S. Ziti, A. Belhaj, H. Labrim, L. Bahmad, A. Benyoussef, A. El Kenz, L. Laanab
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2015)
Article
Chemistry, Physical
M. El Khatabi, M. Bhihi, S. Naji, H. Labrim, A. Benyoussef, A. El Kenz, M. Loulidi
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Physical
M. Boujnah, M. Boumdyan, S. Naji, A. Benyoussef, A. El Kenz, M. Loulidi
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Chemistry, Physical
Sufyan Naji, Adil Belhaj, Hicham Labrim, Mohamed Bhihi, Abdelilah Benyoussef, Abdallah El Kenz
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2014)
Article
Chemistry, Physical
A. Slassi, S. Naji, A. Benyoussef, M. Hamedoun, A. El Kenz
JOURNAL OF ALLOYS AND COMPOUNDS
(2014)
Article
Engineering, Electrical & Electronic
Sufyan Naji, Halima Zaari, Abdulwasea Al-Ammari, Abdelilah Benyoussef, Ahmed Ennaoui
Summary: The study of a new nano thick solar material based on GeSe/SnS hetero-bilayer shows promising electronic properties and efficiency, making it a viable candidate for solar energy conversion and optoelectronics applications.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Sufyan Naji, Mohammad N. Murshed, M. A. Ahlam, Mohamed E. El Sayed, Ahmed Samir, Adnan Dormosh
Summary: A theoretical study of a statistical lattice model based on a double hexagonal structure with G(2) symmetry is presented. The magnetic properties of the Ising-1/2 model on the double hexagonal lattice are studied using Monte Carlo simulation. The thermal behavior of the total and partial magnetizations, as well as the corresponding susceptibilities, is calculated and analyzed for different lattice sizes. The study shows that the total and partial magnetizations vanish at the same critical temperature, indicating a second order transition. The critical transition temperature related to the uniform coupling interaction value equals one is estimated using finite-size scaling analysis. The obtained critical temperature of the model is found to be between the critical temperatures of hexagonal and triangular lattice models.
Article
Materials Science, Multidisciplinary
Mohammad N. Murshed, Mohamed E. El Sayed, Sufyan Naji, Ahmed Samir
Summary: This study investigates the electronic and optical properties of the new scintillating material TlMgCl3 using density functional theory. Calculations reveal a direct band gap of 6.04 eV at M point and high transmittance exceeding 92.5% in the emission range. The upper light yield is estimated to be 66,225 ph/MeV and 69,686 ph/MeV in two different scenarios, making TlMgCl3 a promising candidate for scintillation detector applications.
RESULTS IN PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Sufyan Naji, Mohammad N. N. Murshed, Mohamed E. E. El Sayed, M. A. Ahlam, Ahmed Samir
Summary: In this study, DFT calculations were conducted to investigate the electronic, optical, polaron properties of Tl2ZrCl6 material and estimate its upper light yield. The results showed that Tl2ZrCl6 has localized valence and narrow discrete conduction bands, with a heavy effective mass of electron and a light effective mass of hole. Additionally, the material exhibited high transmittance in the emission range. The polaron properties and the temperature-dependence of polaron mobility and relaxation time were also calculated, and the upper light yield was estimated.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Maamon A. Farea, Hamed Y. Mohammed, Sumedh M. Shirsat, Meng-Lin Tsai, Mohammad N. Murshed, Mohamed E. El Sayed, Sufyan Naji, Ahmed Samir, Rim M. Alsharabi, Mahendra D. Shirsat
Summary: An ultrafast and highly sensitive carbon monoxide gas sensor based on PEDOT/GO nanocomposites has been developed. The PEDOT/GO nanocomposite was successfully formed via a simple and inexpensive polymerization process in the presence of GO, confirmed by various characterization techniques. The PEDOT/GO-based sensor showed excellent sensitivity to a wide range of CO concentrations, with quick response/recovery times and exceptional long-term stability at room temperature. This sensor could be a promising candidate for real-time CO detection due to its low cost, simple development process, and excellent sensing performance.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
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)