Article
Materials Science, Multidisciplinary
Maira da Silva, Humberto Fajardo, Thenner S. Rodrigues, Felipe A. E. Silva, Vanderlei S. Bergamaschi, Anderson Dias, Kisla P. F. Siqueira
Summary: A proteic sol-gel route using edible gelatin as a precursor was employed to produce NiMoO4 catalysts. The catalysts were characterized using various techniques, and phase-pure alpha-NiMoO4 polymorph was obtained at temperatures above 700 degrees C. The catalyst calcined at 700 degrees C exhibited the highest stability, activity, and best selectivity in the ethanol steam reforming reaction for hydrogen production.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Polymer Science
Julien G. Mahy, Thierry Delbeuck, Kim Yen Tran, Benoit Heinrichs, Stephanie D. Lambert
Summary: Monometallic and bimetallic catalysts based on Fe, Ni, and Pd were synthesized and tested for chlorobenzene hydrodechlorination. The sol-gel cogelation process resulted in small metallic nanoparticles dispersed within the silica matrix. The Pd-Ni catalysts showed lower activity than monometallic Pd catalysts, but increasing the Ni content led to amplified catalyst deactivation. In contrast, Pd-Fe catalysts exhibited higher activity due to the presence of Fe-Pd alloy. Fe had a cooperative effect when coupled with Pd, reducing Pd poisoning by HCl.
Article
Chemistry, Physical
Greta Inkrataite, Meldra Kemere, Anatolijs Sarakovskis, Ramunas Skaudzius
Summary: This study investigated the impact of boron doping on YAG, YLuAG, and LuAG materials, showing that the addition of boron can indeed shorten decay time and increase emission intensity. Powder compounds containing 1% and 5% boron exhibited the most intense emission, while pure samples doped with 5% boron showed the shortest decay times.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Isabelle Ly, Elodie Layan, Emmanuel Picheau, Nicolas Chanut, Frederic Nallet, Ahmed Bentaleb, Marie-Anne Dourges, Roland J. Pellenq, Elizabeth A. Hillard, Thierry Toupance, Francois Dole, Frederic Louerat, Renal Backov
Summary: A series of Nb2O5-SiO2 monolithic catalysts with multiscale porosity were designed using a sol-gel process and the physical chemistry of complex fluids. These catalysts showed efficient and selective solvent-free heterogeneous catalysis, with easy handling and recyclability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Xiaojuan Lu, Jiankang Hai, Feng Zhang, Xinyu Li, Jing Li
Summary: A novel lithium-ion conductor with microporous channels was prepared using a hydrothermal-assisted sol-gel method, and composites with enhanced conductivity were obtained by infiltrating the prepared material. The interaction between microporous channels and dense lithium-ion conducting areas contributed to the increased conductivity of the composites, showing promising results for the preparation of solid lithium-ion conductors.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Han Wang, Yujie Ma, Yanchao Shen, Cancan Zhang, Jiazhi Yang, Pingyun Li
Summary: In this study, Co3O4/N-doped carbon materials and Co-Co3O4/N-doped carbon materials were prepared using the sol-gel method. Calcination and acid-base inhibition were employed to enhance the catalytic performance of the materials. The materials prepared using ethylene glycol and glycerol exhibited excellent catalytic activity in the hydrogenation reduction reaction. Additionally, using acrylamide as the source of carbon and nitrogen resulted in highly active Co-Co3O4/NC nanocatalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Sidra Bibi, Azim Khan, Safia Khan, Awais Ahmad, Syed Sakhawat Shah, Mohammad Siddiq, Azhar Iqbal, Abdullah A. Al-Kahtani
Summary: The study on lithium manganese phosphate with different chromium contents revealed that the dielectric constant increases with frequency at low chromium concentrations, while it decreases with frequency at higher chromium contents. The material with the highest chromium content showed the lowest AC conductivity and dielectric loss, making it suitable for various applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Yanfeng Liu, Xianhui Wang, Yaning Su, Mengyu Wan, Xuan He
Summary: Incorporating nano-sized ZnO rods onto TiB2 particles can enhance the mechanical properties of AgTiB2 composites, particularly showing significant improvements in yield strength and ultimate compressive strength. An appropriate amount of ZnO content is beneficial for the densification and performance of contact materials.
Article
Physics, Applied
Pierfrancesco Maltoni, Tapati Sarkar, Gaspare Varvaro, Gianni Barucca, Sergey A. Ivanov, Davide Peddis, Roland Mathieu
Summary: The sol-gel synthesis was used to efficiently obtain nanocrystallites of SrFe12O19 (SFO) hexaferrite, allowing control over nanoparticle size and maintaining magnetic performance at lower annealing temperatures. The study shows the potential of this method in designing hard/soft exchange-coupled bi-magnetic nanocomposites.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Review
Chemistry, Multidisciplinary
Rosaria Ciriminna, Mario Pagliaro
Summary: The ability to alter the solid catalyst structure and the exceptional chemical and physical stability of organosilica-entrapped sol-gel catalysts make them highly applicable in the synthesis of various valuable molecules, including polymers, in the fine-chemical industry. By referring to notable independent research achievements, this article offers a practical perspective on these materials, with the aim of facilitating the adoption of heterogeneous catalysis in the fine and specialty chemical industry.
TOPICS IN CURRENT CHEMISTRY
(2023)
Article
Chemistry, Applied
Barbara Popanda, Jaroslaw Grolik, Wojciech Gieszczyk, Marcin Sroda
Summary: This study prepared a series of sol-gel hybrids using different acids, bases, solvents, and luminophore concentrations to immobilize zinc phthalocyanine. The immobilization was achieved by coordinating the zinc phthalocyanine with an isonicotinamide substituted by alkoxysilane. Hybrid materials of variable hydrophilicity were obtained by using siloxane precursors to optimize the conditions for phthalocyanine immobilization. The optical properties and photostability of the hybrids were investigated.
Article
Materials Science, Coatings & Films
Huanhuan Hong, Guangrui Xie, Lei Sun, Yang Yang, Ze Zhang, Jie Li, Shihong Zhang
Summary: In this study, LaFeO3 film prepared by the sol-gel method was used to catalytically plasma nitride 38CrMoAl steel. Plasma nitriding treatments were conducted at 520 degrees C for different durations. The effects of LaFeO3 on the microstructure, phase structure, mechanical, and tribological properties of the plasma nitrided layers were investigated. The results showed that LaFeO3 was effective in accelerating the plasma nitriding process and improving the surface properties of the nitrided layers.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Characterization & Testing
Farzaneh Sabbagh, Khadijeh Kiarostami, Nadia Mahmoudi Khatir, Shahabaldin Rezania, Ida Idayu Muhamad, Fakhrisadat Hosseini
Summary: In this study, a series of Mg1-xZnxO nanoparticles were synthesized and added to k-carrageenan/NaCMC to form hydrogels. FESEM analysis showed that the MgO nanocomposite had the lowest swelling ratio.
Article
Materials Science, Multidisciplinary
Amit Kumar, Piyush K. Patel, K. L. Yadav, Yogendra Singh, Naveen Kumar, Abdullah, G. Sharma, Satyendra Singh
Summary: The effect of grain boundary resistance (G(BR)) and grain resistance (G(R)) on the magnetoelectric coupling in multiferroic composite thick films of BiFeO3 (BFO) nanocrystalline powder and poly vinylidene-fluoride (PVDF) polymer is significant. The study shows that grain boundary resistance plays an important role in strengthening the magnetoelectric effect in the BFO-PVDF system, with the BFO50 sample demonstrating promising results for device and sensor applications.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Physical
Natalia E. Boboriko, Yaraslau U. Dzichenka
Summary: The study utilized fast and simple molecular dynamics simulation to investigate the interaction between gas molecules and oxide surfaces, revealing that hydrogen molecules interacted most efficiently with the (001) anatase plane. The results suggest that molecular dynamics simulation can be a useful tool in understanding gas sensing properties of oxide materials.
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)