Review
Chemistry, Multidisciplinary
Vincentas Maciulis, Almira Ramanaviciene, Ieva Plikusiene
Summary: Nanostructured materials formed from metal oxides offer advantages such as large surface area, improved physical properties, and adjustable electronic properties. This review discusses various types of metal oxide nanostructures classified based on size and composition and their application in chemical sensors and biosensors. The synthesis methods of metal oxide nanostructures and their integration in sensor design are also analyzed in detail.
Article
Chemistry, Multidisciplinary
Vasundhara Madaan, Krishan Kumar
Summary: The degradation of rose bengal dye was studied under UV irradiation using CeO2 doped with oxygen-deficient Gd3+ ions prepared via the sol-gel technique. XRD analysis confirmed a single-phase crystalline structure with crystallite size ranging from 7.38 nm to 9.48 nm and lattice parameters ranging from 5.407 angstrom - 5.420 angstrom. HR-TEM analysis revealed spherical particles with sizes in the range of 7.6 nm-9.8 nm. Raman analysis confirmed the presence of oxygen vacancies. The synthesized photocatalysts exhibited excellent degradation performance for rose bengal dye under UV irradiation, with degradation rates increasing from 73.06% to 92.32% upon doping, and thus have potential applications in environmental remediation.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Christopher L. Rom, Rebecca W. Smaha, Celeste L. Melamed, Rekha R. . Schnepf, Karen N. Heinselman, John S. Mangum, Sang-Jun Lee, Stephan Lany, Laura T. Schelhas, Ann L. Greenaway, James R. . Neilson, Sage R. Bauers, Adele C. Tamboli, Jennifer S. Andrew
Summary: We predict and realize a new magnetic and semiconducting material, MnSnN2, through combinatorial sputtering of thin films. MnSnN2 exhibits a wide composition tolerance, with a single-phase region of 20% < Mn/(Mn + Sn) < 65%. The material shows a wurtzite-like crystal structure with cation disorder and has an optical absorption onset of 1 eV, consistent with the computationally predicted 1.2 eV bandgap. Resistivity and Hall effect measurements confirm the semiconducting nature of MnSnN2 and reveal complex charge transport mechanisms. Magnetic susceptibility measurements show a low-temperature magnetic ordering transition and strong antiferromagnetic correlations in MnSnN2, contrasting with previous studies on cation-ordered MnSiN2 and MnGeN2.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
J. Blasco, J. A. Rodriguez-Velamazan, G. Subias, M. C. Sanchez, J. L. Garcia-Munoz
Summary: The magnetism of SmBaMn2O5 was studied using magnetic and neutron diffraction measurements on a single crystal. The compound has an oxygen deficient perovskite structure with a layered ordering of Sm and Ba cations. The Mn atoms are arranged in a checkerboard pattern in the ab-plane, forming expanded-compressed pyramids. Below 134 K, the Mn moments exhibit ferrimagnetic ordering, while the Sm moments begin to polarize around 10 K in the ab-plane.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Physical
Karin Rettenmaier, Gregor A. Zickler, Guenther J. Redhammer, Thomas Berger
Summary: Mixed transition metal oxides are promising electrode materials for electrochemical energy storage and conversion. The synthesis of these materials with tailored composition, crystal structure, and morphology is crucial for optimizing their properties. This study reports on the room-temperature electrodeposition of a ternary oxide, ZnMnO3, using earth-abundant metals. The epitaxial growth of ZnMnO3 on ZnO nanowires results in a 2-dimensional morphology and shows promise for the direct growth of other mixed transition metal oxides on conductive substrates.
Article
Crystallography
Siddhartha Suman, Nagaraju Mukurala, Ajay K. Kushwaha
Summary: Gallium Oxide (Ga2O3) nanostructures were synthesized using a hydrothermal approach, and the impact of different gallium precursors on the morphology of gallium nanostructures was studied. Different shapes of nanostructures were obtained depending on the precursor used, and post-synthesis thermal annealing at high temperatures led to significant alterations in the properties of the nanostructures.
JOURNAL OF CRYSTAL GROWTH
(2021)
Article
Chemistry, Physical
Pamela Machado, Roger Guzman, Ramon J. . Morera, Jordi Alcala, Anna Palau, Wu Zhou, Mariona Coll
Summary: The need for highly performant and stable p-type transparent electrodes based on abundant metals is driving research on perovskite oxide thin films. Cost-efficient and scalable solution-based techniques are being explored to prepare these materials and extract their full potential.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Martin Moebs, David A. Dixon, Gabriel F. de Melo, Monica Vasiliu, Tim Graubner, Karl O. Christe, Florian Kraus
Summary: The purely chemical synthesis of fluorine, previously believed to be impossible, was achieved in 1986 but has not been further studied since then. The mechanism of this reaction has been a mystery until recently, when it was experimentally resolved and supported by electronic structure calculations. These findings clarified the previous discrepancy and showed that the reductive elimination of F-2 requires a large excess of SbF5, occurring in the last reaction step.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Xiaoyu Song, Sarah N. Schneider, Guangming Cheng, Jason F. Khoury, Milena Jovanovic, Nan Yao, Leslie M. Schoop
Summary: This study investigates the mechanism of oxidative deintercalation of KCrSe2, revealing that the solid-state diffusion of K+ cations is the rate-limiting step in the process. Additionally, the relationship between Cr-Cr distances and magnetic order changes suggests the possibility of switching between magnetic states in CrSe2 monolayers by varying lattice parameters.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Adam Kubiak, Zuzanna Bielan, Aleksandra Bartkowiak, Elzbieta Gabala, Marcin Frankowski, Maciej Zalas, Katarzyna Siwinska-Ciesielczyk, Marcin Janczarek, Teofil Jesionowski
Summary: The multifunctional TiO2-ZnO heterostructures were prepared using a two-stage microwave method and exhibited high photocatalytic activity in phenol degradation and significantly improved photovoltaic parameters in DSSC cells.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhi-Cheng Wang, Kulatheepan Thanabalasingam, Jan P. Scheifers, Alenna Streeter, Gregory T. McCandless, Jonathan Gaudet, Craig M. Brown, Carlo U. Segre, Julia Y. Chan, Fazel Tafti
Summary: The crystal structure and magnetic properties of a new copper tellurite sulfate compound were analyzed, suggesting it as a promising alternative to layered perovskites for future experiments aiming to tune the Mott insulating ground state into superconducting or spin liquid states.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Eli Sutter, Jacob S. French, Peter Sutter
Summary: This study focuses on the phase-selective synthesis of free-standing GeSe and GeSe2 nanoribbons using a vapor-liquid-solid growth process over Au catalyst nanoparticles. The results show that GeSe ribbons can be transformed into GeSe-GeSe2 core-shell heterostructures through selenization, and the cathodoluminescence spectroscopy of GeSe-GeSe2 hybrids exhibits strong luminescence.
CHEMISTRY OF MATERIALS
(2022)
Article
Environmental Sciences
M. L. Aruna Kumari, L. Gomathi Devi, Gilberto Maia, Tse-Wei Chen, Nabil Al-Zaqri, M. Ajmal Ali
Summary: TiO2, ZnO, and SnO2 metal oxides were synthesized and heterojunctions were fabricated by combining TiO2 with either ZnO or SnO2 in a 1:1 ratio using mechanochemical ball milling process. The ternary heterojunctions showed enhanced photocatalytic activity, with TiO2(A)/TiO2(R)/ZnO heterojunction attributed to the formation of Ti3+-V-o defect states leading to efficient charge carrier separation. The ball milling process resulted in severe crystal deformation in TiO2 and ZnO lattices, creating crystal lattice distortion and defects due to valency mismatch between Ti4+ and Zn2+.
ENVIRONMENTAL RESEARCH
(2022)
Article
Crystallography
M. S. Aguilar, F. Mares-Briones, L. G. Garcia, G. Rosas
Summary: This work developed a simple and time-dependent method to synthesize CuO nanoribbons. The concentration of precursor salt, surfactant, and reaction time were varied to determine the synthesis conditions. The morphology, chemical composition, and structure of CuO nanoribbons were characterized using SEM, TEM, XRD, and EDS. The study found that the amount of PVP greatly influenced the morphology of the nanostructures, with low amounts promoting the formation of nanoribbons and larger amounts stabilizing the formation of octahedral particles.
JOURNAL OF CRYSTAL GROWTH
(2022)
Article
Chemistry, Physical
Kaichuang Chen, Chensheng Lin, Shengzi Zhang, Guang Peng, Yu Chen, Dan Zhao, Huixin Fan, Shunda Yang, Xin Wen, Min Luo, Zheshuai Lin, Ning Ye
Summary: A series of new langasite crystals were designed and synthesized with excellent mid-IR NLO properties and broad transparency range, achieved by reducing vibration frequency through introducing heavier Ge4+ cations to extend transparency in the mid-IR region. Theoretical calculations also showed significant enhancement of SHG effect by Pb2+ cations.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
A. Aly, M. Ghali, A. Osman, M. K. El Nimr
Summary: This study reports the discovery of naturally occurring luminescent graphene quantum dots (GQDs) in coconut water for the first time. The GQDs were identified through various measurements and were found to have dual sizes and emit different wavelengths of light. The GQDs were also utilized as an efficient optical sensor for aniline liquid detection.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zehua Chen, Wencheng Ma, Qinglu Fan, Yanhua Liu, Min Sun, Shuo Wang
Summary: The nanoscale e-VOPO4 materials were successfully prepared by hydrothermal synthesis and calcination, showing high purity and suitable particle size. It exhibited satisfactory electrochemical performance as cathode material for sodium ion batteries, making it a potential candidate for high energy storage systems.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Tao Liu, Yahui Liu, Le Ling, Zhongxi Sheng, Zao Yi, Zigang Zhou, Yongjia Yang, Bin Tang, Qingdong Zeng, Tangyou Sun
Summary: In this paper, a terahertz (THz) micronano device that can switch between bimodal absorption and plasmon-induced transparency (PIT) is proposed. The device consists of layers of graphene, silica, and vanadium dioxide, and has a simple structure, easy tuning, and wide-angle absorption. The device achieves perfect absorption at specific frequencies and is highly sensitive to environmental refractive index. It also has the functions of a three-frequency asynchronous optical switch and slow light effect.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Xiaobo Luo, Songhan Hu, Qiudong Duan, Dacheng Zhou, Jialin Chen, Yugeng Wen, Jianbei Qiu
Summary: The exploration of solar light absorption by a material is important in photonics and optoelectronics. This study reveals the potential of Ba3-xGa2O6:xBi3+ as a promising candidate for various photonic and optoelectronic applications, and demonstrates the use of the material in double-sided laser printing for three-dimensional optical imaging.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zhenshan Yu, Hao Chen, Xuequan Chen, Yu-Sheng Lin
Summary: This study presents a silicon dielectric metamaterial (SDM) composed of two outer symmetric semi-circular rings and two inner symmetric split-ring resonators (SRRs). The electromagnetic responses of the SDM device in different modes were studied through numerical simulations and experiments. Increasing the structure height of the SDM device resulted in red-shifted resonances and stronger intensities. This study provides a new design strategy for the development of frequency filtering, polarization switching, and resonance modulation characteristics in THz-wave applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yiming Qi, Na Zhang, Meng Zong, Yangxianzi Liu, Weixing Chen
Summary: This study prepares dielectric/carbon fiber based nanocomposites wave-absorbing materials using liquid diffusion and high temperature carbonization strategies. By tuning the element type, drying mode, and filling amount, the electromagnetic parameters and absorbing properties can be adjusted. The best synthesized sample shows excellent absorbing performance, making it suitable for a wide range of electromagnetic wave absorption applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Carlos D. Gonzales-Lorenzo, T. K. Gundu Rao, Alberto A. Ccollque-Quispe, Jorge Ayala-Arenas, Monise B. Gomes, Betzabel N. Silva-Carrera, Roseli F. Gennari, Valeria S. Pachas, F. Monzon-Macedo, H. Loro, Jose F. D. Chubaci, Nilo F. Cano, Rene R. Rocca, Shigueo Watanabe
Summary: In this study, CaSiO3 doped with different ppm of Eu was synthesized using the devitrification method. Various physical properties were analyzed, revealing that the intensity and temperature of the high-temperature TL peak increased with higher dopant amounts. Fluorescence measurements indicated the presence of Eu2+ and Eu3+ ions in the samples. EPR spectra confirmed the existence of two defect centers.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yanning Qu, Xinyang Li, Mei Cui, Renliang Huang, Wanquan Ma, Yunting Wang, Rongxin Su, Wei Qi
Summary: In this study, a new molybdenum disulfide/N,S-doped carbon quantum dots (MoS2/N,S-CQDs) heterojunction with enhanced light absorption and electrons transfer di-functional properties was constructed via a facile one-pot hydrothermal method. The heterojunction showed remarkable efficiencies in degrading methylene blue (MB) and malachite green (MG) in an actual water system under simulated sunlight irradiation. The facile synthetic technique and effective multifunctional properties of the composite have the potential for further research and industrial applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jiayi Wang, Penggang Ren, Xueyan Zhao, Zhengyan Chen, Yanling Jin, Zengping Zhang
Summary: In this study, a novel homojunction photocatalyst was developed by combining defective g-C3N4 and flaked g-C3N4, which showed excellent degradation performance and cycling stability, and exhibited practicality in several simulation experiments.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jing Yan, Xiaoxiao Zhao, Weixing Chen, Panbo Liu
Summary: This research presents a self-templated strategy to prepare a spherical superstructure of carbon nanorods through material modification and pyrolysis. The resulting material exhibits a large controllable radius of curvature and shows excellent microwave absorbing properties due to its high specific surface area and mesoporous structure.
MATERIALS RESEARCH BULLETIN
(2024)
Review
Materials Science, Multidisciplinary
Qinglin Zeng, Zepeng Lv, Shaolong Li, Bin Yang, Jilin He, Jianxun Song
Summary: Liquid metal batteries possess stable safety performance, high rate performance, and thermal stability. The electrolyte, an important component of the battery, plays a significant role in achieving these remarkable performance characteristics. This paper reviews the important research progress of liquid metal batteries electrolyte and discusses the influence of different electrolyte types on energy efficiency. It also highlights the limitations and challenges of existing electrolytes and proposes key development directions for liquid metal electrolytes.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Song Wu, Junli Wang, Xuanbing Wang, Di Jiang, Jinlong Wei, Xiaoning Tong, Zhenwei Liu, Qingxiang Kong, Naixuan Zong, Ruidong Xu, Linjing Yang
Summary: In this study, a composite electrode composed of Ti/TiH2/beta-PbO2_Mn3O4@C was fabricated and investigated for zinc electrowinning. The composite electrode exhibited low overpotential, Tafel slope, icorr, and high voltage stability, outperforming most reported Ti-based PbO2 electrode materials. The excellent catalytic activity can be attributed to the low resistance and porous interlayer of TiH2 nanosheets, as well as the addition of Mn3O4@C micro-flakes to the active layer.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
E. Tsoutsoumanos, T. Karakasidis, N. Laskaris, P. G. Konstantinidis, G. S. Polymeris, G. Kitis
Summary: This study investigates the correlation between nanocrystal dimensions and thermoluminescence signal magnitude through simulations conducted in Python. Two mathematical models, OTOR and IMTS, were used to derive theoretical luminescence signals. The obtained results were compared with experimental data and a thorough comparative discussion was conducted.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Rahul Kumar, Bipul Kumar Pradhan, Brajesh S. Yadav, Govind Gupta, Senthil Kumar Muthusamy, Sumeet Walia, Sunil Singh Kushvaha
Summary: Recently, there has been a great demand for highly responsive photodetectors that can detect a wide range of wavelengths. Researchers have successfully fabricated a broadband metal-semiconductor-metal photodetector by integrating sputtered Bi2Se3 with laser molecular beam epitaxy grown GaN film. This photodetector shows high responsivity in both the ultraviolet and near-infrared regions.
MATERIALS RESEARCH BULLETIN
(2024)