Article
Chemistry, Inorganic & Nuclear
Rentapalli Vijaya Bharathi, M. K. Raju, Susmitha Uppugalla, Vemuri Raghavendra, D. Parajuli, B. Suryanarayana, S. Yonatan Mulushoa, N. Murali, K. Samatha
Summary: Cu2+ substituted Mg0.5Co0.5Fe2O4 ferrite materials were synthesized using a solid-state reaction method, and their structural, magnetic, and electrical properties were studied. The materials were characterized using XRD, SEM, FTIR, VSM, and DC electrical resistivity apparatus. The XRD patterns showed a single cubic phase and a decrease in lattice constant with increasing copper concentration. The SEM images revealed spherical and polyhedral-shaped grains with agglomerations. The FTIR spectra indicated the nature of ferrite. The VSM study showed soft ferromagnetic behavior, and the DC resistivity exhibited a semiconductor nature with increased Cu2+ concentration.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Green & Sustainable Science & Technology
A. Ashok, T. Ratnaji, L. John Kennedy, J. Judith Vijaya, R. Gnana Pragash
Summary: The study developed a magnetically recoverable magnesium substituted zinc ferrite nanocatalyst for producing biodiesel from waste cooking oil. The catalyst, synthesized through a microwave assisted combustion process, exhibited high magnetic moment and saturation magnetization properties for efficient magnetic separation and achieving high biodiesel conversion rates.
Article
Chemistry, Multidisciplinary
Mike Joerges, Richard M. Gauld, Henning Steinert, Leif Kelling, V. S. V. S. N. Swamy, Alexander Kroll, Bert Mallick, Viktoria H. Gessner
Summary: This study reports the synthesis and structure analysis of a series of mono and diylide-substituted tetrylenes of type YEX and Y2E using a thiophosphinoyl-tethered metallated ylide. The spectroscopic and structural properties of the ylide ligand show distinct trends with increasing atomic number of the tetrel element. The diylidyltetrylenes are unstable towards transylidation, forming the mono(ylide)tetrylenes when treated with the tetrel dihalides according to the stability trend: Y2Pb.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ming Zhang, Cai-Jun Zheng, Kai Wang, Yi-Zhong Shi, De-Qi Wang, Xing Li, Hui Lin, Si-Lu Tao, Xiao-Hong Zhang
Summary: Exciplex emitters with intermolecular hydrogen bonds between donor and acceptor molecules show higher photoluminescence quantum yield and lower non-radiative transition rate, leading to improved efficiency and stability in OLEDs. This novel strategy of utilizing intermolecular hydrogen bonds paves the way for developing efficient and stable exciplex emitters, as demonstrated by the significant enhancement in performance compared to contrastive devices.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Energy & Fuels
Longjiao Chang, Xiaolong Bi, Shaohua Luo, Shiyuan Cao, Anlu Wei, Wei Yang, Jianan Liu, Fusheng Zhang
Summary: LiMnPO4 material has excellent properties, and its electrochemical performance can be significantly improved through Mg doping, providing new ideas and methods for the development of lithium-ion batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Jiequn Liu, Jian Wang, Qingrong Chen, Shengkui Zhong
Summary: The study found that Mg-doped LiMn1-xMgxPO4/C compounds have a good structure and electrochemical performance, with higher specific capacity and cycling performance than undoped LiMnPO4/C, showing promising potential for high-performance lithium-ion batteries.
MATERIALS TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Chunxiao Zhang, Bo Wei, Wenjun Jiang, Meiyu Wang, Wang Hu, Chaoping Liang, Tianshuo Wang, Libao Chen, Ruifeng Zhang, Peng Wang, Weifeng Wei
Summary: The study proposes a method to improve the thermal stability and cycle life of Li1.2Mn0.53Ni0.27O2 cathode material for lithium-ion batteries by doping with niobium, showing potential for industrial application.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
S. Yonatan Mulushoa, N. Murali
Summary: This study investigates the effects of Cr3+ substitution on the structural, dielectric, and magnetic properties of Mg0.5M0.5Fe1.5Cr0.5O4 (M = Cu, Zn, and Ni) ferrite system prepared by sol-gel method. The results show that the samples have a single-phase cubic spinel structure with small crystallite size. In terms of dielectric properties, the samples exhibit normal dielectric behavior with frequency dependence, which is attributed to the Maxwell-Wagner type interfacial polarization and electron hopping between Fe2+ and Fe3+ ions. In terms of magnetic properties, the samples demonstrate soft ferri-magnetic behavior with high saturation magnetization. Therefore, these nanoscale ferrite particles have potential applications in high-density recording media.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Yi Liu, Yuxiang Gong, Yiren Wang, Yong Jiang, Chunlei Shen, Xiaosong Zhou, Xinggui Long
Summary: The surface structures and relative stabilities of low-miller-index surfaces of & gamma;-TiH and & gamma;-TiH2 have been investigated as a direct function of environmental conditions. It was observed that the dominant surface termination of & gamma;-TiH changes with increasing p(H2), while & gamma;-TiH2 is stable only when p(H2) exceeds a certain threshold. The surface phase diagrams and surface energies of & gamma;-TiH and & gamma;-TiH2 were also determined.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Physics, Applied
Liufei Gao, Suhua Chen, Guowei Zhang, Zhongsheng Dai, Dong Yan, Hui Ying Yang, Caiyan Yu, Ying Bai
Summary: The modification of Ni-rich LiNi0.6Co0.2Mn0.2O2 (NCM622) with La2Zr2O7 (LZO) as a multifunctional layer significantly improves cycling stability and rate capability of the cathode material.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Chaochao Dun, Sohee Jeong, Deok-Hwang Kwon, ShinYoung Kang, Vitalie Stavila, Zhuolei Zhang, Joo-Won Lee, Tracy M. Mattox, Tae Wook Heo, Brandon C. Wood, Jeffrey J. Urban
Summary: The chemical interactions on the surface of nanoparticles are closely related to its crystal facets, which can regulate the energy storage properties. This study investigated the growth of magnesium particles with different crystal facets on graphene oxide. The hydrogen storage performance of the magnesium particles varied depending on the crystal facet orientation. The results provide a new method for regulating the hydrogen storage of metal hydrides.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yan Qi, Peng Sheng, Jun Li, Xin Zhang, Wei Zhang, Shihai Guo, Yanghuan Zhang
Summary: Reducing particle size and modifying surface state by ball milling are effective methods to improve hydrogen absorption kinetics of Mg-based alloys. In this study, ball milling was used to process the as-cast La7Ce3Mg80Ni10 alloy ingot in order to obtain amorphous and nanocrystalline structures. The effects of ball milling time on the structures and the thermodynamics and kinetics of hydrogen absorption/desorption were investigated. The results show that the 10 h-milled alloy exhibits the optimal activation performance and hydrogen absorption/desorption kinetics.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Hyo-Sun Jang, Donghyuk Seol, Byeong-Joo Lee
Summary: This study investigates the effect of alloying elements on the recrystallization behavior of magnesium alloys. It is found that grain boundary segregation and solute clustering in solid solutions can affect grain boundary migration, leading to changes in recrystallization behavior. Solute clusters in Mg-Zn-Ca alloys have a stronger dragging effect on grain boundaries compared to Mg-Al-Zn alloys, providing another explanation for the changes in recrystallization behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Hangfeng Zhang, Haixue Yan, Isaac Abrahams
Summary: A systematic study on pseudo-isovalent B site co-substituion of Ti4+ by Mg2+ and Nb5+ in bismuth sodium titanate was performed. The results show that co-substitution by Mg and Nb can suppress and shift dielectric anomalies, interrupt long-range ferroelectric ordering and lower polarizations. Samples with x=0.1 composition exhibited the highest energy storage density, while samples with x=0.5 composition achieved the best balance between energy storage and energy efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Andrew P. Justl, Sabah K. Bux, Susan M. Kauzlarich
Summary: Yb14MnSb11 is a high-temperature p-type thermoelectric material that can control carrier concentration through site substitution. Substitution of Lu3+ for Yb2+ increases the electrical resistivity and Seebeck coefficient, reducing the peak zT.
ACS APPLIED ENERGY MATERIALS
(2023)