Article
Engineering, Chemical
Md Shahadat Hossain, Takeshi Furusawa, Masahide Sato
Summary: A simple and cost-effective hydrothermal technique was used to fabricate hollow α-Fe2O3 microspheres, which were characterized by various methods. The microspheres exhibited a shell composed of aggregated α-Fe2O3 nanoparticles with a hollow interior. This material shows potential applications in drug delivery, gas sensing, and lithium storage.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Radu-Robert Piticescu, Anca Elena Slobozeanu, Sorina Nicoleta Valsan, Cristina Florentina Ciobota, Andreea-Nicoleta Ghita, Adrian Mihail Motoc, Stefania Chiriac, Mythili Prakasam
Summary: Zirconium dioxide is a ceramic material with high potential, and co-doping with multiple rare earth elements can significantly influence its properties. Various synthesis methods have been proposed for these materials. During thermal treatment, a solid solution enriched in rare earth oxide was formed as the major phase. The lowest thermal conductivity was found in La co-doped 8 wt.% YSZ, while the lowest activation energy for ionic conduction was observed in Gd co-doped 8 wt.% YSZ materials.
Article
Chemistry, Multidisciplinary
Ling Gao, Hao Zhi, Shengnan Zhang, Shifeng Liu
Summary: Anisotropic ZrO2 particles with octahedron-, diamond- and plate-like morphologies were successfully synthesized using a hydrothermal treatment approach with NaBF4 as a mineralizer. The concentration of mineralizers played a crucial role in controlling the shape and size of the ZrO2 particles. The introduction of NaBF4 played an essential role in tuning the crystallinity and size of primary ZrO2 nanorods, and the synergistic effect of F- and B3+ resulted in different epitaxial growth rates. The as-prepared ZrO2 particles exhibited different photocatalytic efficiencies for the degradation of organic dyes, with the highest degradation rate of 88% observed for ZrO2 photocatalyst synthesized with a 0.01 mol/L NaBF4 mineralizer under UV irradiation.
Article
Chemistry, Inorganic & Nuclear
Xing Huang, Mengsi Zhang, Jinyang Li, Zhiying Zhao, Zhangzhen He
Summary: Two new potassium ytterbium sulfates have been synthesized with different crystal structures and magnetic properties, both exhibiting wide optical band gaps.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Lakshmi Mukhopadhyay, Vineet Kumar Rai
Summary: Core@shell nanoparticles were synthesized using chemical methods and characterized by various analyses. The silica coating on the core@shell NPs improved their performance, resulting in better thermal stability, sensitivity, and temperature range.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Rola Mohammad Al Soubaihi, Khaled Mohammad Saoud, Myo Tay Zar Myint, Mats A. Gothelid, Joydeep Dutta
Summary: Pd supported on SiO2 aerogel catalysts show good catalytic activity for CO oxidation due to their CO bond activation capability and thermal stability. The catalyst becomes active and conversion increases after reaching the ignition temperature (T-ig). A normal hysteresis in CO oxidation has been observed, with the catalyst exhibiting high catalytic activity even at temperatures lower than T-ig.
Article
Materials Science, Ceramics
Fei Peng, Yonggang Jiang, Fengqi Liu, Jian Feng, Junzong Feng, Liangjun Li
Summary: This study develops a new method to tailor the crystallinity of alumina aerogels and successfully synthesizes heat resistant, well-crystallized alumina aerogels. The thermal evolution of the aerogel and the factors influencing thermal stability are investigated. A general rule towards improving the heat-resistance of alumina aerogels is discovered.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Vignesh Raj Sivaperumal, Rajkumar Mani, Veerababu Polisetti, Kanakaraj Aruchamy, Taehwan Oh
Summary: Calcium phosphate-based ceramic material is a potential candidate for dental restorations and bone replacements, but its limited thermal processing ability and weak mechanical strength have hindered its application in hard tissue engineering. In this study, zirconia was used to reinforce hydroxyapatite, resulting in improved biocompatibility and mechanical stability.
APPLIED SCIENCES-BASEL
(2022)
Review
Energy & Fuels
Hosein Ghaedi, Ming Zhao
Summary: This study reviews the recent development methods for template removal from various types of mesoporous silica materials. The methods are categorized into physical methods and chemical methods, and their effects on material properties and template removal mechanisms are discussed in detail.
Article
Materials Science, Ceramics
Nathaniel S. Olson, Frances I. Hurwitz, Haiquan Guo, Nathan J. Madden, Jamesa L. Stokes, Richard B. Rogers, Jessica A. Krogstad
Summary: Investigating doped metal oxide systems can lead to stabilization of porous structures at high temperatures, improving thermal stability. Increasing yttria content can enhance the thermal stability of aerogels by reducing densification, suppressing crystallite growth, and maintaining the mesoporous structure up to 1200 degrees Celsius.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Caique Diego de Abreu Lima, Roniel dos Santos Sousa, Antonio Werbeson Miranda, Joao Victor Barbosa Moura, Gardenia de Sousa Pinheiro, Bartolomeu Cruz Viana, Iara Souza Lima, Thiago Mielle Brito Ferreira Oliveira, Oswaldo Baffa, Jefferson Ferraz Damasceno Felix Araujo, Cleanio da Luz Lima
Summary: This study investigated the synthesis, characterization, and thermal stability of pure and Al ion-exchange titanate nanotubes (Na2Ti3O7 and NaxAlyTi3O7, respectively). The results revealed the obtainment of sodium titanate and aluminum titanate nanotubes with different average lengths and diameters. The presence of Al ions in the crystal lattice affected the energy exchange between the unpaired species and the lattice. The thermal stability of sodium titanate nanotubes was influenced by sodium ions, while the incorporation of Al3+ ions into the nanotube lamellae decreased the thermal stability of aluminum titanate nanotubes.
SOLID STATE SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Ken L. Abel, Sebastian Weber, David Poppitz, Juliane Titus, Thomas L. Sheppard, Roger Glaeser
Summary: Thermally stable and highly mesoporous Si-stabilized ZrO2 was prepared. The use of DDA surfactant and NH3 treatment helped in achieving large mesopores, high specific surface area, and high pore volume.
Article
Chemistry, Applied
Hui Li, Yu Zhao, Dong Ji, Xinhong Zhao, Chunqiang Li, Peng Guo, Guixian Li
Summary: The research proposed a novel method to improve HZSM-5 zeolite catalysts and successfully prepared the Si@Gd/Z5-T catalyst with hollow and hierarchical porous systems. This catalyst overcomes the drawbacks of traditional HZSM-5, exhibiting high selectivity and optimized porous structure.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Thermodynamics
A. M. Aboraia, Taymour A. Hamdalla, A. A. A. Darwish, B. M. Alotaibi, S. A. Al-Ghamdi, S. Alfadhli, Mohamed Saad, H. M. H. Zakaly, E. R. Shaaban, Alexander Soldatov
Summary: In this study, four different percentages of LiCo1 - xFexPO4 were synthesized using a hydrothermal route at low temperatures. The as-prepared sample exhibited a single orthorhombic Pn21a-phase at 220 degrees C. The thermodynamics and combustion process were investigated, and the kinetic parameters were calculated using thermogravimetric experiments. The study found that the thermodynamics properties of LiCo1 - xFexPO4 materials were efficient in investigating the temperature impact on pyrolysis activity and showed potential for various applications. The impedance spectrum analysis revealed that increasing Fe content improved the electrical conductivity of LiCoPO4.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Materials Science, Coatings & Films
Runwu Zhu, Jinming Li, Wenbo Chen, Qing Hu, Xiangrong Lu, Mingyi Xu, Jingqi Huang, Yunwei Tu, Jianing Jiang, Longhui Deng, Shujuan Dong, Li Liu, Xueqiang Cao
Summary: In this research, Mg0.09Zr0.91O1.91 (MSZ), Y0.09Zr0.91O1.955 (YSZ) and Ce0.09Zr0.91O2 (CSZ) powders were prepared and their corresponding zirconia coatings were fabricated using atmospheric plasma spraying. The hydrothermal treatment showed increased monoclinic phase content in the coating samples, with MSZ having the highest increase of 47%, followed by YSZ with 31% increase, and CSZ with 8% increase. The degradation of the coatings' internal structure worsened with longer hydrothermal treatment time, and CSZ exhibited better hydrothermal stability due to its lower oxygen vacancy concentration of 4% compared to MSZ (11%) and YSZ (7%).
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.