Article
Multidisciplinary Sciences
Yiming Chen, Chi Chen, Chen Zheng, Shyam Dwaraknath, Matthew K. Horton, Jordi Cabana, John Rehr, John Vinson, Alan Dozier, Joshua J. Kas, Kristin A. Persson, Shyue Ping Ong
Summary: The study reports the development of a database of computed L-edge XANES using FEFF9 code based on multiple scattering theory, aiming to address the research community's need for L-edge XANES spectra.
Article
Chemistry, Multidisciplinary
Fatima Sajid, Naila Jabeen, Latif U. Khan, Manzar Sohail, Adeela Rehman, Zareen Akhter
Summary: The increased emission of volatile organic compounds (VOCs) and their adverse effects on the environment have led to the development of more economical and sustainable sensing technologies. Ethanol, a member of the VOC family, has harmful effects on human health and the environment. Therefore, there is a high demand for an efficient electrocatalyst for ethanol detection at ambient temperature. In this study, NiO-based sensing material was successfully synthesized by modifying NiO through transition metals doping (8% Cu and 8% Zn) and codoping (4% Cu + 4% Zn). The synthesized catalysts were characterized by various techniques, and it was found that the codoped NiO exhibited better catalytic performance for ethanol detection with a wide linear range and a low detection limit.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Mamoru Kitaura, Kei Kamada, Toshiaki Ina, Hisanori Yamane, Manabu Ishizaki, Shinta Watanabe, Junpei Azuma, Isamu Yamamoto, Akimasa Ohnishi, Takeshi Usuki
Summary: The local structures of Gd atoms in Gd-3(Al, Ga)(5)O-12 garnet solid solutions grown using the Czochralski method were studied through X-ray and UV absorption spectroscopy experiments. The preferential sites for the occupation of Ga and Al atoms were identified, and positional fluctuations of neighboring O atoms buffered local distortions induced by the presence of Ga and Al atoms. Changes in high-resolution UV absorption spectra due to Gd intra-4f transitions on the Ga content were explained by considering crystal field and Coulomb repulsion on the Gd atom.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Simone Virga, Alessandro Longo, Candida Pipitone, Francesco Giannici
Summary: X-ray absorption spectroscopy (XAS) is a valuable technique for studying the structure of materials. Despite its potential, XAS has been relatively underutilized in the study of lead halide perovskites. In this study, we investigate a hybrid Pb/Bi iodide solid solution as a model for halide perovskites, aiming to develop general analysis approaches for XAS spectra of halide perovskites with different compositions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Inorganic & Nuclear
Lucia Amidani, Marius Retegan, Anna Volkova, Karin Popa, Philippe M. Martin, Kristina O. Kvashnina
Summary: This study conducted a detailed investigation of hexavalent uranium in various local configurations using high-energy-resolution fluorescence-detected X-ray absorption near-edge structure at the U M-4 edge. The findings revealed the nature of spectral features and indicated that the main peak corresponds to nonbonding 5f orbitals, while the highest energy peak corresponds to antibonding 5f orbitals. This research aligns with the accepted interpretation of uranyl spectral features and provides a broader perspective for interpreting the spectra of U6+-containing samples based on a common theoretical foundation.
INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Szymon Wojty, Tomasz Baran
Summary: The copper-nickel-oxide photocatalyst prepared based on a metal organic framework shows impressive activity in photocatalytic and photoelectrochemical water splitting with hydrogen evolution as well as photocatalytic degradation of volatile organic compounds. Additionally, it exhibits high cathodic photocurrents in alkaline solution, suggesting its potential as a efficient photocatalyst.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Inorganic & Nuclear
Artem Svyazhin, Vladimir Nalbandyan, Mauro Rovezzi, Aleksandra Chumakova, Blanka Detlefs, Alexander A. Guda, Alessandro Santambrogio, Alain Manceau, Pieter Glatzel
Summary: X-ray spectroscopy using high-energy-resolution fluorescence detection (HERFD) provides detailed information on the oxidation state, phase composition, and local environment in molybdenum-based compounds at the L-3-edge. The chemical shift of HERFD L-3-edge spectra follows a parabolic dependence on the oxidation state, providing insights into the distortion of ligand environments and radial order of atoms around the absorber. The comparison of high-resolution spectra with theoretical simulations demonstrates the ability of the single-electron approximation to reproduce the spectral shape accurately, which can be useful in various fields including physics, chemistry, materials science, and biochemistry.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Mauro Antonio Andriotti Jr, Maria Ines Basso Bernardi, Alexandre Mesquita
Summary: Phosphor materials with narrow emission bands and high quantum efficiency, such as SrTiO3:Pr,Al, have attracted attention for optoelectronic device applications. In this study, mesocrystal samples of Sr0.998Pr0.002Ti1-yAlyO3 were prepared and characterized using various techniques. Results showed that the hydrothermal method and Al incorporation caused structural changes and emission intensity variations, which were attributed to symmetry breaking, Ti off-center displacement, octahedral tilting, and oxygen vacancies. The study also revealed the generation of broad emission and the influence of intrinsic defects on the optical properties of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Hao Wang, Jiangwen Liao, Jiajun Zhong, Yunpeng Liu, Lei Yao, Lixiong Qian, Yuecheng Lai, Xin Wang, Yikun Li, Jianxin Song, Xueqing Xing, Guang Mo, Zhongjun Chen, Zhonghua Wu
Summary: This paper thoroughly discusses the evolution of the Ni atom coordination structure in the synthesis of Ni single atom catalyst using graphitic carbon nitride as a support. The results reveal a three-stage process in which the coordination configurations change as the temperature increases. The findings are further confirmed by simulations and calculations.
Article
Materials Science, Multidisciplinary
Siripond Phromma, Tuksadon Wutikhun, Panita Kasamechonchung, Suchinda Sattayaporn, Tippabust Eksangsri, Chaweewan Sapcharoenkun
Summary: Silver modified titanium dioxide (Ag-TiO2) nanoparticles with different loading were synthesized and their effects on the structure of TiO2 were investigated. The presence of Ag+-ion in TiO2 structure was confirmed, resulting in Ag substitution and oxygen vacancy in TiO2. XRD and XANES findings revealed the phase transformation and modification of lattice parameters of anatase and rutile phases in the TiO2 structure following Ag doping, indicating the successful introduction of Ag into TiO2. Low Ag doping contents showed better photocatalytic activity than higher doping contents under visible light.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Physics, Multidisciplinary
R. Dupuy, J. Filser, C. Richter, T. Buttersack, F. Trinter, S. Gholami, R. Seidel, C. Nicolas, J. Bozek, D. Egger, H. Oberhofer, S. Thuermer, U. Hergenhahn, K. Reuter, B. Winter, H. Bluhm
Summary: The determination of depth profiles across interfaces is crucial in various scientific and technological fields. While photoemission spectroscopy is a suitable method for this purpose, investigating liquid-vapor interfaces has been hindered by a lack of understanding of electron-scattering processes in liquids. However, recent studies have shown that core-level photoelectron angular distributions can provide information on the depth distribution of species across the interface. This study further explores this concept and demonstrates that the experimental anisotropy parameter scales linearly with the average distance of atoms along the surface normal, achieving excellent depth resolution.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ayane Murano, Haruka Funabiki, Takao Sekiya
Summary: Investigation of the changes in electronic state and local structure of nitrogen in TiN powders heated in air was conducted. The results showed that TiN transformed into TiO2 with the desorption of nitrogen and the oxidation reaction, as the temperature increased. Additionally, it was found that nitrogen-doped TiO2 was formed when heating the TiN powder above 600 degrees C.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
M. A. Laguna-Marco, E. Arias-Egido, V Cuartero, J. Herrero-Albillos, P. Kayser, J. A. Alonso, G. Fabbris, D. Haskel, T. Irifune
Summary: This study investigates the interplay between the magnetic structure of Sr2NiIrO6 and lattice degrees of freedom under high pressure using x-ray absorption spectroscopy and x-ray diffraction. The results show non-monotonic changes in the x-ray magnetic circular dichroism spectrum with increasing pressure, indicating that the observed changes are not a transition from antiferromagnetic to ferromagnetic order. Instead, the changes can be better explained by the weakening/strengthening of the long-range antiferromagnetic interaction between the Jr sublattice planes associated with the reduction of the lattice parameters.
Article
Materials Science, Multidisciplinary
Jia Liu, Shitan Wang, Baopeng Yang, Haipeng Xie, Han Huang, Dongmei Niu, Yongli Gao
Summary: The protective effect of 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA) passivation layer on the environmental stability of black phosphorus (BP) was studied. It was found that NTCDA can improve the environmental stability of BP and slow down the surface oxidation and degradation.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Physical
Roberto A. Colina-Ruiz, Juan A. Hoy-Benitez, Juan S. Lezama-Pacheco, Jose Mustre de Leon, Francisco J. Espinosa-Faller
Summary: The local atomic structure of Zn1-xNixS thin films was investigated using X-ray absorption spectroscopy. The presence of a contraction in the Ni-S bond distance and the existence of nanoscopic metallic Ni phase were observed as Ni concentration increases. The difference between local and average crystalline structures is important for determining the electronic properties of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)