Article
Materials Science, Multidisciplinary
Pinkie Ntola, Holger B. Friedrich, Abdul S. Mahomed, Ezra J. Olivier, Alisa Govender, Sooboo Singh
Summary: This study presents the structural characterization of VOx/MgO powders prepared by a stoichiometric solution combustion synthesis using five different fuels. The synthesized powders were characterized using X-ray diffraction, Raman spectroscopy, Inductively Coupled Plasma Emission Spectroscopy, Scanning Electron Microscopy, and Aberration Corrected Transmission Electron Microscopy. The results showed that the selection of fuel influenced the microstructure, vanadate phase formation, and dispersion of each powder. By correlating experimental microstructural parameters with calculated thermodynamic parameters, the study demonstrates the crucial role of fuel in controlling reaction kinetics.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Thermodynamics
Siyi Zhang, Baozhong Zhu, Yunlan Sun
Summary: This paper investigates the effects of PDA and PTFE modifications on the combustion performance and agglomeration of n-mu Al powders. The results demonstrate that the PDA interface layer regulates the thermal reactivity and flame diffusion of the modified sample, while the synergistic effect with PTFE and n-mu Al powders effectively inhibits the particle agglomeration.
COMBUSTION AND FLAME
(2022)
Article
Chemistry, Physical
Jingjing Li, Weiqiang Tang, Zhenhui Liu, Kun Cong, Li Gong, Jianmin Li, Rongjie Yang
Summary: Microcomposite particles of aluminum dotted by ammonium dinitramide (ADN) were prepared successfully through an in-situ crystallization growth method. It was found that the decomposition of ADN increased the oxidation degree of aluminum, making it easier to ignite and burn. After combustion, the Al@ADN composites were converted to α-Al2O3 and γ-Al2O3.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Thermodynamics
Hao Shi, Chunlong Jiang, Haobo Bi, Zhanshi Ni, Hao Sun, Yurou Yao, Qizhao Lin
Summary: This study investigates the effect of potassium fluosilicate (K2SiF6) on the ignition and heat release characteristics of nano-aluminum powders. It is found that K2SiF6 can effectively improve the ignition and heat release characteristics of the powders by increasing the reaction rate. The addition of K2SiF6 also affects the ignition delay time and combustion products of the mixture.
COMBUSTION SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Hongling Zhou, Keqin Feng, Yanfang Liu
Summary: This study fabricated a novel W-Mo-Cu alloy by large current electric field sintering at a relatively low temperature, and investigated the effects of Cu powder size on the densification, microstructure, and properties. It was found that smaller copper powders were beneficial to improving the distributional homogeneity of elements and the sintering densification.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Wei Cui, Fei Li, Zhaobo Tian, Jie Zhang, Songmo Du, Zhanglin Chen, Kexin Chen, Guanghua Liu
Summary: Coarse-grained beta-Si3N4 powders were prepared by combustion synthesis with N-2 pressure of 6 MPa, low diluent content not exceeding 10 wt.%, and high reaction temperature above 1900 degrees C. The powders consisted of beta-Si3N4 crystals with an average thickness of over 10 μm, with some crystals thicker than 20 μm.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Paul H. Gruber, Sarmad Naim Katea, Gunnar Westin, Farid Akhtar
Summary: This study presents a novel approach for synthesizing WC-Ni cemented carbides with enhanced mechanical properties. The resulting cemented carbides showed even distribution of Ni binder phase and retained ultrafine WC grain sizes. The mechanical performance of the WC-Ni cemented carbides through this approach was comparable to conventionally prepared WC-Co cemented carbides and superior to conventionally prepared WC-Ni cemented carbides.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Haozhi Duan, Dehai Meng, Shijie Wu, Shuxia Yuan
Summary: Nano-LiFePO4 prepared by solution combustion synthesis (SCS) suffers from impurities from excess fuels, which were addressed by a simple heat treatment. The treated Nano-LiFePO4 exhibited more continuous carbon layers and better electrochemical performance with a specific capacity of 152.8 mAh/g at 0.1C and a coulombic efficiency of 92.86% at the 1st cycle.
Article
Thermodynamics
Tao Yan, Pingan Liu, Naimeng Song, Yapeng Ou
Summary: The combustion characteristics of micro-and nano-sized boron carbide (B4C) powders were investigated to study the role of carbon atoms in combustion. Results showed a correlation between the carbon oxide gas and the condensed combustion products. The presence of oxygen diffusion channels on the surface of micro-sized B4C particles accelerated mass transfer rate and improved oxidation efficiency.
COMBUSTION AND FLAME
(2023)
Article
Materials Science, Ceramics
Ramon Cobo Rendon, R. Udayabhaskar, Christopher Salvo, Erwin Sepulveda, Jose Jimenez Rodriguez, Carlos P. Camurri, Mangalaraja Ramalinga Viswanathan
Summary: The La0.8Sr0.2MnO3 (LSM) perovskite as oxygen electrode material was synthesized by the fast solution combustion method and the subsequent calcination had an influence on the material's crystal phase, grain size, hardness, porosity, and conductivity.
CERAMICS INTERNATIONAL
(2022)
Article
Thermodynamics
Qingguan Song, Wei Cao, Xiao Wei, Jianzhong Liu, Jifei Yuan, Xinglong Li, Xiangli Guo, Dayuan Gao
Summary: Through experimental study of the ignition and combustion characteristics of micro- and nano-sized boron under different pressures and atmospheres, it is found that nano-sized boron shows significant advantages in combustion, especially under conditions of high oxygen concentrations and high pressures.
COMBUSTION AND FLAME
(2021)
Article
Electrochemistry
Jagadeesh Sure, D. Sri Maha Vishnu, Sunghun Choi, Hyun-Kyung Kim, Carsten Schwandt
Summary: Nano-sized powders of Ta1-xHfxC ceramics were synthesized by electro-deoxidation method at a significantly lower temperature than the conventional preparation methods. The synthesized ceramics exhibited excellent crystal structure and particle size distribution, and had better control over composition.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Aleksandra Jovanoski Kostic, Nikola Kanas, Vladimir Rajic, Annu Sharma, Subramshu S. S. Bhattacharya, Stevan Armakovic, Maria M. M. Savanovic, Sanja J. J. Armakovic
Summary: Water pollution is a significant issue, and photocatalysis is a promising and environment-friendly approach for water purification. The study found that SLTO and SCNPTO nano-sized powders have good photocatalytic activity in removing residual pindolol from water.
Article
Engineering, Chemical
Yuxin Wu, Guokai Zhang, Jian Yao, Yong He, MingYang Wang
Summary: A code was developed to simulate the combustion of nano- and micron-sized aluminum dust in air. The code accurately models the burning process across a wide range of particle sizes and predicts the burning velocity trend with varying dust concentration. The effects of dust concentration, oxygen volume fraction, and thermophoretic force on the combustion process were analyzed.
Article
Materials Science, Multidisciplinary
Xiaohang Ma, Wanjun Zhao, Xin Zeng, Shi Iran, Dazhi Liu, Fan Zhang, Qingjie Jiao
Summary: To improve the energetic behavior of Al, heterogeneous Al-Zr alloy powders were prepared by high-speed centrifugal atomization. The results demonstrate that compared to pure Al, Al-Zr alloy exhibits lower ignition temperature, higher weight gain, and faster oxidation rate, indicating significantly enhanced combustion performance.
Article
Chemistry, Multidisciplinary
Alaauldeen A. Duhduh, Chou-Yi Hsu, Mustafa Humam Sami, Anupam Yadav, Russul Thabit, Sagr Alamri, Abdelmajeed Adam Lagum, Ali A. Rajhi
Summary: Density functional theory (DFT) calculations were used to investigate the application of a Zn12O12 nanocage as an anode material in Na-ion batteries (NIBs). The pure nanocage showed low performance, but encapsulating a chloride led to a significant increase in voltage, surpassing carbon nanotubes and C24 fullerene.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Hiroyuki Ikemoto, Toshihiko Fujimori, Takafumi Miyanaga, Reo Kawaguchi, Koki Urita, Masao Tabuchi
Summary: This study investigated the structures of two Se chains confined inside single-walled carbon nanotubes (SWCNTs), revealing that the chains were linear and parallel. The covalent bond between Se and SWCNT was found to be stronger than that between Se and trigonal Se (t-Se). The interaction between chains was attributed to the overlap of electronic orbitals, and the disappearance of this overlap in the encapsulated Se chains enhanced the covalent bonds.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Suman Yadav, Atul Gour, Sadhna Singh
Summary: In this study, we investigated the electronic and thermoelectric properties of rare-earth half-Heusler XPtBi (X = Gd, Nd, Y) topological semimetals compounds using density functional theory. Our results indicate that the inclusion of spin orbit coupling has a significant impact on the electronic band structure and spin order, making it promising for spintronic applications. We found different topological states in these compounds and observed enhanced power factor in YPtBi with the inclusion of SOC.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Takahiro Ozawa, Hiroshi Nakanishi, Koichi Kato, Ryota Shimizu, Taro Hitosugi, Katsuyuki Fukutani
Summary: In this study, we elucidate the hopping mechanism of hydrogen at intermediate temperature using a combination of experimental data and theoretical calculations. We find that the transition from thermal hopping to quantum tunneling is attributed to resonant tunneling, which is achieved through the resonant tunneling of discrete vibrational states between the edge octahedral site and the tetrahedral site. We also demonstrate that the tunneling rate can be tuned by energy level matching.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Ankita Nandi, Ritam Mehera, Moumita Mandal, Paramesh Chandra, Swapan K. Mandal, Naznin Ara Begum, Chandan K. Jana, Nilanjana Das
Summary: In this study, stable biogenic ZnO nanoparticles were successfully synthesized using a biosynthesis method, and their effects on oxidative stress parameters in Saccharomyces cerevisiae were investigated. The results demonstrate that high concentrations of ZnO nanoparticles may induce oxidative stress conditions, suggesting caution in their extensive use.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
P. S. Dighe, A. A. Bhoite, V. L. Patil, N. L. Tarwal, P. B. Sarawade
Summary: In this study, Ni-Co layered double hydroxide (LDH) nanocomposites with excellent electrochemical properties were prepared using hydrothermal technique. The as-obtained material exhibited high specific capacitance and remarkable energy density, showing great potential for supercapacitor applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Muhammad Danish, Misbah ul Islam, Farooq Ahmad, M. Nadeem Madni, M. Jahangeer
Summary: This study synthesized M-type hexaferrite and graphene oxide using sol-gel auto-combustion and modified Hummer process. The structure and morphology of the materials were characterized by XRD and SEM. The experimental results showed that coupling magnetic ferrite with graphene oxide can tune the electromagnetic properties of the materials, with potential applications in various fields.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Abrar U. Hassan, Yuchuan Li
Summary: This study presents a new design strategy of N-doped fused ring electron acceptors for organic dye Y123 in photovoltaic and optical devices. The evaluation of five novel dyes shows their positive contributions to charge transfer. Impressive photovoltaic performance is observed in one of the dyes, with high light harvesting efficiency and maximum power output.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Ashvin Kanzariya, Shardul Vadalkar, Sourav Kanti Jana, L. K. Saini, Prafulla K. Jha
Summary: Graphene quantum dots (GQDs) with quantum confinement and size effects show great potential for sensing applications. This computational study investigates the adsorption performance of pristine and transition metal-doped coronene GQDs to hazardous gases. The results suggest that doping with chromium (Cr) or nickel (Ni) enhances the gas adsorption performance, with Cr-doped GQDs showing strong interaction with gas molecules and potential as a gas remover, and Ni-doped GQDs showing potential as a CNCl sensor.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Vladimir V. Poborchii, Victor A. Sachkov, Alexander A. Shklyaev, Alexander V. Fokin, Pavel I. Geshev
Summary: This study investigates the polarized optical absorption and Raman spectra of -5 nm diameter tellurium nanowires confined in chrysotile asbestos nanotubes. The results show a strong interaction between the nanowires and light polarized parallel to the nanowires, while a weaker interaction is observed for light polarized perpendicular to the nanowires. This has significant implications for photonic and photo-electric applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Stanislav Cichon, Frantisek Maca, Vaclav Drchal, Katerina Horakova, Irena Kratochvilova, Jan Lancok, Vladimir Chab, Patrik Cermak, Jiri Navratil, Cestmir Drasar
Summary: In this study, a reliable method for preparing high-quality single crystal substrates doped with Bi2Se3 was developed. The electronic properties and chemical states of atoms in the substitutional position and native defects in the topological insulator were analyzed using experimental and theoretical methods. The relationship between the position of the Dirac cone and valence band maximum was explored and discussed.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Ikkurthi Kanaka Durga, Dasha Kumar Kulurumotlakatla, Tholkappiyan Ramachandran, Yedluri Anil Kumar, D. Amaranatha Reddy, K. V. G. Raghavendra, Asma A. Alothman, Sunkara Srinivasa Rao
Summary: Nickel molybdate oxide and tungsten trioxide have potential as electrode materials for supercapacitors, but their poor conductivity and fast capacitance fading limit their performance. By building a hierarchical nanoflower structure, the electrochemical performance of the supercapacitor is enhanced.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Elnaz Saadinia, Mohammad Almasi Kashi, Amir H. Montazer
Summary: Fe-based nanowires containing nonmagnetic elements, fabricated using a pulse electrodeposition method in porous anodic alumina membranes, exhibit magnetic tunability. The magnetic properties of Fe100-xSnx NW arrays, with a diameter of about 35 nm, such as coercivity and squareness values, decrease with increasing Sn content. The structure of the FeSn NWs, dominated by Fe or FeSn alloy crystal phase, can be either single domain or pseudo-single domain states depending on the Sn content.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Xinkai Liu, Tingting Liu, Yuanliang Zhou, Jing Wen, Jinmei Dong, Chenggong Chang, Weixin Zheng
Summary: CuS-Mg/S-BC composites modified by one-pot sulfurization exhibited higher removal efficiency in adsorption and photocatalytic removal of dyes, thanks to the functional groups and vacant sites formed at the interface for enhanced adsorption and photon capture.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Chemistry, Multidisciplinary
Yixing Hao, Fang Zhu, Hao Cheng, Sridhar Komarneni, Jianfeng Ma
Summary: A magnetic porous composite catalyst synthesized from CoFe2O4 and CuS showed high degradation efficiency for organic pollutants under visible light conditions, using non-radical degradation as the main pathway.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
