Article
Materials Science, Multidisciplinary
Jayaraman Kalidass, Thirugnanasambandam Sivasankar
Summary: Mesoporous magnetite (Fe3O4) nanospheres were synthesized quickly using a facile sonoelectrochemical method. The aim of this study was to obtain high yield of active Fe3O4 nanoparticles with tunable structural morphology at reduced cost, energy, and synthesis time without compromising quality. The combination of electrochemical method with ultrasound resulted in higher mass transfer rate and rapid formation of magnetite. The study also investigated the role of additive and stabilizer, as well as the influence of ultrasound amplitude and irradiation time. The prepared magnetite nanoparticles exhibited spherical shape, narrow size distribution (30-80 nm), mesoporous nature, and a surface area of 121.87 m2g-1, with a high saturation magnetization value (65.33 emug-1) indicating near superparamagnetic behavior. Deep characterization techniques confirmed the highly crystalline and stable nature of the magnetite nanoparticles.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Tzu-Ho Wu, Yu-Ming Li, Kung-Yi Ni, Tzu-Kuan Li, Wei-Sheng Lin
Summary: Rechargeable aqueous zinc-ion batteries have gained attention for their cost-effectiveness and safety. Advanced cathode materials, especially layered vanadium oxides prepared using a mild method, show promising performance in RAZIBs. pH values of precursor solutions are found to be a key factor in the reaction process, affecting battery performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Electrochemistry
Bo Sun, Chuang Zhang, Suzhen Liu, Liang Jin, Qingxin Yang
Summary: Research shows that using ultrasound to characterize the state of lithium-ion batteries provides valuable insights into the mechanical evolution of the batteries. However, there have been few studies analyzing the battery cycle performance through acoustic response results. This study introduces the concept of ultrasonic count to characterize the battery state and combines it with conventional acoustic metrics to analyze the acoustic response characteristics of the battery during cycling.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Ceramics
Alexis Corbin, Lise Guichaoua, Hiva Baradari, Flavien Gueneau, Xavier Chaucherie, Bruno Gilardin, Thierry Gosset, Cedric Boissiere, Lionel Nicole, Clement Sanchez
Summary: The challenge of accumulating and storing final materials from waste incineration requires the development of recycling strategies. This study proposes an innovative process that combines sol-gel growth with bottom ash and solubilized fraction from industrial and household waste combustion. The resulting materials demonstrate high adsorption capacity and have the potential to replace conventional activated carbon used in incineration plants.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Paula Valeria Viotti, Wardleison Martins Moreira, Henrique Straioto, Rosangela Bergamasco, Mara Heloisa Neves Olsen Scaliante, Marcelo Fernandes Vieira
Summary: This study investigates the modification of natural zeolite to enhance its ability to remove drugs and pesticides from water. The hydrothermal treatment with surfactant (CTAB) results in a structural rearrangement of the zeolite, making it more hydrophobic with a smaller specific area and a higher porosity. The modified zeolite exhibits significantly increased removal of the evaluated contaminants. The study concludes that hydrothermal modification with CTAB is a promising technique for using natural zeolites in the removal of emerging contaminants.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Sammar Tayyab, M. Anis-ur-Rehman
Summary: The study synthesized lithium cobaltate without water and surfactants using the sol-gel method, and prepared composites with different weight percentages of bismuth. Structural analysis was conducted using X-ray diffraction and electrical properties were measured using the four-probe method. The thermal transport properties were investigated using the transient plane source method, showing significant impact of bismuth content on thermal conductivity and Seebeck coefficient.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Siqi Xiang, Yihan Liang, Mengcheng Zhou, Xinfang Zhang
Summary: Thermoelectric materials based on Cu1.8S face challenges in high-temperature applications due to oxidation and spontaneous decomposition. However, partially replacing S atoms with Se can significantly enhance the anti-oxidation and anti-decomposition capacities of Cu1.8S materials, while improving their thermoelectric performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Raju K. Biswas, Swapan K. Pati
Summary: Oxide materials offer a wide range of applications and potential for addressing the energy crisis. The layered solid solution structure of SnO-PbO shows stability and unique properties, making it a promising candidate for high-performance thermoelectric applications.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
H. Y. Hong, D. H. Kim, S. O. Won, J. K. Lee, S. D. Park, S. M. Choi, S. H. Bae, K. Park
Summary: By introducing Cu2-ySe nanoinclusions into the Bi0.86Ba0.14CuSeO matrix, the electrical conductivity and thermoelectric properties can be improved while reducing lattice thermal conductivity, leading to enhanced thermoelectric performance.
Increasing the content of Cu2-ySe significantly boosts the electrical conductivity of the composite materials, with the best dimensionless figure-of-merit achieved at x = 0.15.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
Dursun Ekren, Jianyun Cao, Feridoon Azough, Demie Kepaptsoglou, Quentin Ramasse, Ian A. Kinloch, Robert Freer
Summary: This study investigates the effects of processing parameters and graphene addition on the thermoelectric performance of La-doped SrTiO3. The results show that adding mildly oxidized electrochemical graphene oxide (EGO) and muffling the green body with an oxygen-scavenging carbon powder bed during sintering significantly improve the electrical conductivity and power factor of the material. Theoretical modeling and microstructure analysis reveal the mechanism of improved carrier mobility in the grain boundary phase due to graphene addition.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Siqi Xiang, Yihan Liang, Xinfang Zhang
Summary: Mn doping and S-evaporation can optimize the carrier concentration and introduce pore defects, thus improving the thermoelectric properties and thermal stability of cuprous sulfide materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Yunpeng Zheng, Hetian Chen, Zhifang Zhou, Yueyang Yang, Mingchu Zou, Wenyu Zhang, Bin Wei, Jinghan Cai, Jin-Le Lan, Di Yi, Ce-Wen Nan, Yuan-Hua Lin
Summary: The influence of grain boundaries and orientations on SrTiO3-based thermoelectric films is systematically investigated, and it is found that (001)-oriented film exhibits the best performance with outstanding power factor values. This lays a solid foundation for improving thermoelectric performance in other oxide thin films.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
D. H. Kim, H. Y. Hong, K. Park
Summary: By co-doping with Ca2+ and Ba2+, the electrical conductivity of BiCuSeO is significantly increased while the phonon thermal conductivity is reduced. This combination leads to a significant improvement in thermoelectric performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
I. V. Shamsutov, A. A. Markov, O. V. Merkulov
Summary: This article discusses the development of a z-type thermoelectric element with a direct electrical junction based on dissimilar oxide conductors, Ca0.9Bi0.1MnO3 (n-type) and Ca2.7Bi0.3Co4O9 (p-type). A thermoelectric z-element was fabricated using hydrostatic pressing and an interconnector based on an oxide composite and silver particles. The microstructure of the thermoelectric legs was studied using electron microscopy. Measurements of resistivity and Seebeck coefficient were conducted, and the estimated power factor was calculated for different ceramic samples. The maximum output power of the manufactured thermoelectric module reached 1.1 mW at a temperature gradient of 580 degrees C and a cold side temperature of 37 degrees C. Additionally, simulations were performed to determine the resistance of interfaces between the thermoelectric material and interconnector. The study highlights the potential of hydrostatic pressing in producing complex-shaped thermoelectric elements without vulnerable metal-semiconductor electrical connections in oxide thermoelectric modules.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Yu S. Orlov, S. N. Vereshchagin, S. Novikov, A. T. Burkov, A. A. Borus, M. Sitnikov, L. A. Solovyov, M. N. Volochaev, V. A. Dudnikov
Summary: The properties of Sr1-xSmxTiO3 solid solutions are significantly influenced by the preliminary mechanochemical activation, with samples reduced in hydrogen showing the highest thermoelectric power factor within a specific concentration range. Increasing the annealing temperature of mechanically activated samples leads to a further increase in electrical conductivity and power factor.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Narendar Nasani, Carlos Miguel Oliveira Rocha, Andrei V. Kovalevsky, Gonzalo Otero Irurueta, Sascha Populoh, Philipp Thiel, Anke Weidenkaff, Fernando Neto da Silva, Duncan P. Fagg
INORGANIC CHEMISTRY
(2017)
Article
Chemistry, Physical
Robert Kun, Philipp Schlee, Edit Pal, Matthias Busse, Thorsten Gesing
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Chemistry, Physical
Jens Glenneberg, Ingo Bardenhagen, Frederieke Langer, Matthias Busse, Robert Kun
JOURNAL OF POWER SOURCES
(2017)
Article
Electrochemistry
Frederieke Langer, Maria Sofia Palagonia, Ingo Bardenhagen, Jens Glenneberg, Fabio La Mantia, Robert Kun
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2017)
Editorial Material
Energy & Fuels
Anke Weidenkaff
Article
Chemistry, Multidisciplinary
Jan Hertrampf, Peter Becker, Marc Widenmeyer, Anke Weidenkaff, Eberhard Schluecker, Rainer Niewa
CRYSTAL GROWTH & DESIGN
(2018)
Article
Chemistry, Physical
Songhak Yoon, Kwanghyo Son, Stefan G. Ebbinghaus, Marc Widenmeyer, Anke Weidenkaff
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Chemistry, Physical
Michael Gockeln, Suman Pokhrel, Florian Meierhofer, Jens Glenneberg, Marco Schowalter, Andreas Rosenauer, Udo Fritsching, Matthias Busse, Lutz Maedler, Robert Kun
JOURNAL OF POWER SOURCES
(2018)
Article
Materials Science, Multidisciplinary
Tian-Hua Zou, Wen-Jie Xie, Marc Widenmeyer, Xing-Xing Xiao, Xiao-Yin Qin, Anke Weidenkaff
Article
Chemistry, Inorganic & Nuclear
Songhak Yoon, Michael Gaul, Sitansh Sharma, Kwanghyo Son, Hans Hagemann, Dirk Ziegenbalg, Udo Schwingenschlogl, Marc Widenmeyer, Anke Weidenkaff
SOLID STATE SCIENCES
(2018)
Editorial Material
Materials Science, Multidisciplinary
Magdalena Nistor, Nathalie Jedrecy, Nadhira Bensaada Laidani, Anke Weidenkaff
Article
Physics, Condensed Matter
Raphael Richter, Denitsa Shopova, Wenjie Xie, Anke Weidenkaff, Frank Lechermann
ADVANCES IN CONDENSED MATTER PHYSICS
(2018)
Article
Chemistry, Physical
Kiryl V. Zakharchuk, Marc Widenmeyer, Denis O. Alikin, Wenjie Xie, Sascha Populoh, Sergey M. Mikhalev, Alexander Tselev, Jorge R. Frade, Anke Weidenkaff, Andrei V. Kovalevsky
JOURNAL OF MATERIALS CHEMISTRY A
(2018)
Article
Materials Science, Multidisciplinary
Krzysztof Galazka, Wenjie Xie, Sascha Populoh, Myriam H. Aguirre, Songhak Yoon, Gesine Buettner, Anke Weidenkaff
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)