Article
Materials Science, Multidisciplinary
Siwei Luo, Biao Chen, Min Song, Jianhong Yi, Zhentao Yu, Zhiguo Zhang, Wei Li, Baisong Guo
Summary: A simple and efficient approach for the synthesis of Cr2O3 coated carbon nanotubes (CNTs) was developed, and the morphologies and microstructures of the coating on CNTs were investigated at different annealing temperatures. The findings showed that the amorphous (Cr2O3)(1/2)•(H2O)(3/2) coating can be transformed into amorphous Cr2O3 coating after annealing, and then into nano Cr2O3 particles with high crystallinity. The research provides important guidance for the surface modification of CNTs and lays the foundation for the industrial application of Cr2O3 coated CNTs.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Inorganic & Nuclear
Xuehua Zhang, Li Zhou, Xiaoyu Tu, Fangren Hu
Summary: Zinc oxide microstructures, including nanorods, nanopillars, and multistage microspheres, were synthesized using a two-step hydrothermal approach. The concentration of the growth solution was adjusted to achieve different microstructures. Characterization using SEM, XRD, and XPS revealed hexagonal wurtzite ZnO structures in all samples. The band gaps of the different microstructures were measured using UV-Vis spectroscopy, and the photocatalytic performance of the samples was evaluated. The M-ZnO samples exhibited the highest photocatalytic efficiency.
Article
Environmental Sciences
Dina H. A. Besisa, Hanan H. Mohamed, Emad M. M. Ewais, Yasser M. Z. Ahmed, Amira M. M. Amin
Summary: This study introduces new ceramics/glass composites made from industrial lead silicate glass (LSG) wastes. By adding chromia Cr2O3 and hematite Fe2O3 ceramics, the hazardous waste materials are converted into advanced optical materials with improved morphological properties and optical and magnetic behaviors. The results show that the composite with 30% of Cr2O3/Fe2O3 has the highest optical absorbance, the lowest band gap energy, the highest refractive index, and the best magnetic behavior.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Yang-Shin Liu, Akira Yamaguchi, Yue Yang, An Niza El Aisnada, Sho Uchida, Hideki Abe, Shigenori Ueda, Kenji Yamaguchi, Toyokazu Tanabe, Masahiro Miyauchi
Summary: An unexplored tin oxide crystal phase (Sn3O4) was synthesized using a convenient hydrothermal method. By tuning the often-neglected parameters, a new X-ray diffraction pattern was discovered. Through various characterization techniques, this novel material was identified as orthorhombic mixed-valence tin oxide (Sn2SnO4)-Sn-II-O-IV, which is a new polymorph of Sn3O4. It has a smaller band gap (2.0 eV) and higher visible light absorption. This study is expected to improve hydrothermal synthesis and facilitate the discovery of new oxide materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Tian Tian, Liaoying Zheng, Slavko Bernik, Zhenyong Man, Xue Shi, Xuezheng Ruan, Guorong Li
Summary: Novel ZnO-Cr2O3-based varistors can solve the issues related to volatile, high-cost and toxic components in traditional ZnO-Bi2O3, ZnO-Pr6O11, and ZnO-V2O5-based varistors. The influence of different doping levels of Cr2O3 on the microstructure and electrical properties of varistors was studied, and the optimal amount of Cr2O3 doping to enhance the electrical performance was determined. The results showed that 0.1 mol.% of Cr2O3 is optimal for obtaining improved electrical properties, with increased nonlinearity coefficient (alpha = 73) and lower leakage current (IL < 0.2 mu A/cm2) in ZnO-Cr2O3-based varistors at an applied electric field of 383 V/mm. Larger additions of Cr2O3 lead to the formation of a Ca3(CrO4)2 phase, causing a decrease in barrier height, lower alpha and increased IL.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Inorganic & Nuclear
Amy J. Knorpp, Pietro Allegri, Shangxiong Huangfu, Alexander Vogel, Michael Stuer
Summary: This research focuses on transforming a dawsonite-type structure (NH4M(OH)(2)CO3) into a high-entropy material, which can exist as a highly entropic form with five equimolar and homogeneously distributed cations. The high-entropy dawsonites also exhibit the "memory effects" of non-high-entropy dawsonites. This study extends the field of high-entropy materials to include a structure that can serve as a material platform for the synthesis of high-entropy catalytic materials and ceramic powders.
INORGANIC CHEMISTRY
(2023)
Article
Energy & Fuels
Wei Guo, Xiaojuan Lian, Yamei Tian, Tao Yang, Shuang Wang
Summary: Adjusting the microstructure of Co3O4 using a hydrothermal method can greatly improve its electrochemical performance. The chrysanthemum-like structure of Co3O4, obtained by adding 7 mmol of urea, shows the best specific capacity and rate capability among different morphologies.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Inorganic & Nuclear
A. Amutha, M. Vigneswari, S. Amirthapandian, B. K. Panigrahi, P. Thangadurai
Summary: In this study, pure and Zn-doped SnO2 nanorods were prepared and characterized for their structural and optical properties. The doped Zn ions were found to enhance the gas sensing performance of SnO2, making the Zn-doped nanorods suitable for gas sensing applications.
JOURNAL OF CLUSTER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Sanjeewani R. Bansode, Mahendra A. More, Rishi B. Sharma
Summary: Zinc sulphide-reduced graphene oxide (ZnS-RGO) nanocomposite structures with varying sulphur content were synthesized by a simple solvothermal process. The nanocomposite structures were characterized and field emission measurements were carried out. The highest current density of approximately 1490 mu A cm^-2 was recorded from the nanocomposite at an applied field of 6.40 V mu m^-1.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Electrochemistry
Mohammed A. M. M. Alsamet, Engin Burgaz
Summary: A new route combining sol-gel and hydrothermal methods was used to synthesize LiFePO4, which showed well olivine crystal structure with nanoparticles homogeneously distributed and smaller size when compared with traditional hydrothermal method. The electrochemical performance of the cathode material was improved with the new synthesis method.
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Ceramics
Peng Wang, Jiawei Meng, Ning Li, Chuncheng Wei, Shuang Li, Xin Geng, Xiaowei Li, Jipeng Zhang, Guangwu Wen
Summary: A simple and general method for producing UO2 nanoparticles was reported by heat-treating an aqueous mixture of uranyl acetate dihydrate and ethylenediamine, with the size of nanoparticles controlled by reaction temperature and incubation time. The synthesis mechanism proposed three stages of precursor formation and transformation, providing a new pathway for the synthesis of ianthinite.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Nadia Anwar, Muhammad Munir Sajid, Muhammad Aamir Iqbal, Haifa Zhai, Muqarrab Ahmed, Bushra Anwar, Kareem Morsy, Rey Y. Capangpangan, Arnold C. Alguno, Jeong Ryeol Choi
Summary: This study synthesized FeVO4 using a simple hydrothermal method and demonstrated its exceptional electrochemical properties for detecting low-density ascorbic acid (AA). Characterization techniques such as X-ray diffraction, energy-dispersive X-ray spectroscopy, scanning electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy were used to determine its phase purity, crystallinity, structure, morphology, and chemical composition properties. The electrochemical response of a FeVO4-modified glassy carbon electrode for sensing AA was evaluated using electrochemical impedance spectroscopy and cyclic voltammetry techniques. The results showed that FeVO4 exhibited excellent stability and reproducibility for the electrochemical determination of AA, suggesting its potential for relevant sensing applications.
Article
Green & Sustainable Science & Technology
Mohammad Bagher Askari, Fatemeh Jamali, Mohammad Taghi Tourchi Moghadam, Sadegh Azizi, Majid Seifi
Summary: This study reveals the excellent capability of MnWO4-CNT as a supercapacitor electrode compared to MnWO4 and investigates the effects of CNT on the compound's electrochemical properties. MnWO4-CNT exhibits significant specific capacitance and favorable stability, making it a highly promising material for supercapacitor electrodes.
Article
Environmental Sciences
Sapna Yadav, Nutan Rani, Kalawati Saini
Summary: In this study, nanocomposite NiO/Cr2O3 was synthesized using a simple chemical reduction method and characterized using various advanced analytical techniques. The synthesized NiO/Cr2O3 nanocomposite exhibited significant photocatalytic activity under sunlight irradiation for the degradation of organic dyes. The photocatalytic efficiency of the nanocomposite was found to be high, and it also showed reusability and stability. This synthesized nanocomposite has potential applications in environmental remediation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Ceramics
Yellanna Machakanti, K. Chandra Babu Naidu, D. Baba Basha, Chandrasekhar Madunuri, N. Suresh Kumar, A. Ratnamala, Anish Khan
Summary: This study investigates the microstructure and magneto-dielectric properties of Ni(1-x)EuxFe(2)O(4) (x = .02-.08) nanoparticles prepared by low-temperature hydrothermal method. The results demonstrate that the lattice constants and particle size of NEF increase with the increase of Eu-content. The NEF exhibits hysteresis behavior under varying magnetic field, and the magnetization is highest for x = .08. The TG-DSC analysis reveals the mass loss and transition temperatures of NEF.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC 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.