Article
Materials Science, Multidisciplinary
Jeffrey M. Wheeler
Summary: Meteorites have a unique microstructure called the Widmanstatten structure, which was mapped using mechanical phase mapping in the Taza meteorite to statistically determine properties of different phases. Five microstructural phases were identified and characterized, with mechanical phase maps showing superior contrast in two phases compared to EDX measurements.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Dina V. Dudina, Boris B. Bokhonov, Igor S. Batraev, Yusif N. Amirastanov, Arina V. Ukhina, Ivanna D. Kuchumova, Mikhail A. Legan, Aleksey N. Novoselov, Konstantin B. Gerasimov, Ivan A. Bataev, Konstantinos Georgarakis, Guilherme Yuuki Koga, Yaofeng Guo, Walter Jose Botta, Alberto Moreira Jorge
Summary: In this study, the interaction between Fe66Cr10Nb5B19 metallic glass and aluminum during spark plasma sintering (SPS) was investigated, revealing the formation of reaction layers around the Fe-based cores. The Vickers hardness of composites increased with higher sintering temperatures due to the formation of thicker reaction layers at the interface. Comparison with traditional sintering methods suggests that interfacial resistance may play a crucial role in influencing reaction advancement and formation of intermetallics in metal matrix composites.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Aneta Wardak, Witold Chrominski, Anna Reszka, Dominika Kochanowska, Marta Witkowska-Baran, Malgorzata Lewandowska, Andrzej Mycielski
Summary: This study presents a defect analysis in Cd and Te inclusion regions within Bridgman-grown Cd0.95Mn0.05Te crystals for nuclear detectors. Contrary to Cd inclusions causing microcracks, Te inclusions do not generate defects but induce higher stresses. The higher stress from Te inclusions has a smaller impact on charge carrier transport in detectors compared to Cd inclusions, as confirmed by mu tau product measurements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
M. A. Mazo, A. C. Caballero, J. Rubio
Summary: In this study, cheap, abundant, and easily-obtained carbon fillers such as graphite and carbon black were successfully incorporated into a silicon oxycarbide matrix to obtain dense crack-free bulk composites with enhanced electrical and thermal conductivities. Raman parameters were crucial for understanding the electronic and/or phonon transport in the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
G. B. Mazzei, M. G. Burke, D. A. Horner, F. Scenini
Summary: Pb-Caustic Stress Corrosion Cracking initiation was studied on Alloy 690TT at 315 degrees C. The cracking mainly initiated intergranularly following the oxidation of Cr-rich grain boundary carbides. The as-received surfaces showed higher resistance to crack nucleation compared to polished ones due to the absence of carbide decoration on the grain boundaries in the ultrafine-grained near-surface layer. Dislocation entanglements on the cold-worked surface attenuated the emission of dislocations at the surface. Subsequent cracking was caused by Pb incorporation in the oxide, weakening the passive layer and enhancing slip dissolution.
Article
Chemistry, Physical
Hsin-Li Liang, Che-Wei Tsai, Sheng Guo
Summary: This study successfully designed corrosion-resistant CoCrFeMoNi HEAs with single-phase structure using two strategies, and validated the effectiveness of these methods through thermal stability. The corrosion resistance of these HEAs was found to be competitive compared to Hastelloy C276.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
T. E. Whitfield, N. L. Church, H. J. Stone, N. G. Jones
Summary: Refractory metal high entropy superalloys (RSA) are being developed for high temperature structural applications. However, recently the microstructures of several RSA have been shown to be unstable, precipitating potentially deleterious intermetallic phases during prolonged exposure at elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Nitish Bibhanshu, Gyan Shankar, Satyam Suwas
Summary: Hot deformation and softening response of titanium aluminide Ti-48Al-2V-0.2B were investigated, with microstructural changes observed at different strain rates and temperatures. Deformation in different phase fields led to various mechanisms, such as dynamic recrystallization and cavitation along grain boundaries at certain temperatures. These findings provide insights into the softening behavior of the alloy under different deformation conditions.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Li Fan, Zelin Wang, Yuxiang Lu, Jianguang Zhou
Summary: This study introduces a staged loss-driven neural networks model architecture to transform low-resolution SEM images into super-resolved ones. Experimental results show that compared with other advanced approaches, our model achieves satisfactory results.
Article
Materials Science, Multidisciplinary
Yefeng Bao, Linpo Guo, Chonghui Zhong, Qining Song, Ke Yang, Yongfeng Jiang, Zirui Wang
Summary: The FeCoCrNiB0.2 + 20 wt.% WC coating showed higher Vickers hardness and lower cumulative mass loss compared to the FeCoCrNiB0.2 coating. The presence of chloride ions accelerated the removal of material from the surface, leading to combined cavitation-corrosion damage. Adding 20 wt.% WC reduced the number and depth of cavitation pits, indicating that WC could mitigate cavitation damage.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Multidisciplinary
Gaurav Dak, Sachin Sirohi, Chandan Pandey
Summary: This study examined the microstructure and mechanical properties of a dissimilar laser beam welded joint between ferritic/martensitic P92 steel and 304L austenitic stainless steel. It was found that the dissimilar joint exhibited a high level of inhomogeneity in its microstructure. The effect of this inhomogeneity on the mechanical properties, such as microhardness and impact strength, of the welded joint was discussed. The results showed that the welded joint met the requirements for both as-weld and post-weld heat treatment situations, demonstrating a satisfactory combination of tensile strength and impact strength.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2022)
Article
Chemistry, Physical
Mael Pontoreau, Olivier Dezellus, Sandrine Cardinal, Jean-Marc Pelletier, Rodica Chiriac, Francois Toche, Philippe Steyer, Laurent Gremillard, Maxime Vallee, Xavier Boulnat
Summary: Bulk metallic glasses (BMG) have excellent mechanical and corrosion properties, making them promising for high-tech applications. This study investigates the reactivity between Zr-based BMG (AMZ4) and Zn as a function of temperature and time. The results show that sintering without crystallization is possible within a certain temperature/time window, while beyond that an intermetallic phase is formed at the AMZ4/Zn interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Z. Chen, Y. Xie, A. Datye, J. Thornton, J. Schroers, J. J. Cha, U. D. Schwarz
Summary: Replication of single-crystalline strontium titanate (STO) surfaces through thermoplastic forming with an alloy results in a perfect angstrom-scale replication, while a partially amorphous surface layer is retained even after heating above typical bulk crystallization temperatures. This layer not only helps improve the mechanical and chemical properties of parts, but also provides stability at high temperatures.
MATERIALS TODAY NANO
(2021)
Article
Materials Science, Multidisciplinary
Ahmed Kreta, Miran Gaberscek, Igor Musevic
Summary: A new electrochemical cell was designed for in situ AFM measurements, with optimized design to reduce measurement uncertainty. Experimental results showed that the new cell could simultaneously monitor surface changes in aluminum alloy and the growth of an oxide layer, with confirmation through electrochemical impedance spectroscopy.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Chemistry, Physical
S. C. H. Llewelyn, L. R. Owen, H. Y. Playford, N. G. Jones, D. Dye, M. C. Hardy, H. J. Stone
Summary: This study examined the effects of Ni:Co ratio variation on the lattice misfit of NiCo-5Al-5Ti-15Cr alloys over a wide temperature range. Different alloy compositions were prepared and aged at 800 degrees C, and neutron diffraction was used to determine the lattice parameters. The results showed that the lattice misfit decreased with increasing temperature for alloys with Co content of 0-47 at%, and the misfit increased systematically with increasing Co content up to 38 at%. The alloy with 47Co exhibited lower misfit values than the 38Co alloy at temperatures up to 700 degrees C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Multidisciplinary Sciences
Jieni Fu, Xiangmei Liu, Zhenduo Cui, Yufeng Zheng, Hui Jiang, Yu Zhang, Zhaoyang Li, Yanqin Liang, Shengli Zhu, Paul K. Chu, Kelvin Wai Kwok Yeung, Shuilin Wu
Summary: Probiotic-based nanoparticles can effectively treat immunocompetent primary and immunocompromised secondary bacterial pneumonia by restoring host immunity. These nanoparticles can kill common pathogens, modulate lung microbiota, and alleviate overactive immune responses. This research provides a new strategy for treating bacterial pneumonia in individuals with normal and compromised immunity.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Multidisciplinary
Lihua Wu, Yue Luo, Chaofeng Wang, Shuilin Wu, Yufeng Zheng, Zhaoyang Li, Zhenduo Cui, Yanqin Liang, Shengli Zhu, Jie Shen, Xiangmei Liu
Summary: A biomimetic nanozyme catalyst with rapid and efficient self-bacteria-killing and wound-healing performances was synthesized. It exhibited excellent antibacterial properties against Staphylococcus aureus by capturing surrounding oxygen species to produce radical oxygen species. Additionally, it promoted wound healing by upregulating fibroblast proliferation and angiogenesis genes.
Article
Chemistry, Multidisciplinary
Siyu Wang, Yuqian Qiao, Xiangmei Liu, Shengli Zhu, Yufeng Zheng, Hui Jiang, Yu Zhang, Jie Shen, Zhaoyang Li, Yanqin Liang, Zhenduo Cui, Paul K. Chu, Shuilin Wu
Summary: This study demonstrates the improved thermoelectric performance of Bi2Te3 nanosheets grown on reduced graphene oxides (rGO) through the formation of heterointerfaces. The phonon scattering effect and extra carrier transport channels induced by the rGO-Bi2Te3 heterointerface lead to an enhanced power factor value and reduced thermal conductivity. Furthermore, the photo-thermoelectric catalysis of rGO-Bi2Te3 significantly increases the yield of reactive oxygen species. This study provides new insights into heterointerface design in photo-thermoelectric catalysis.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Congyang Mao, Wanyu Jin, Yiming Xiang, Yizhou Zhu, Jun Wu, Xiangmei Liu, Shuilin Wu, Yufeng Zheng, Kenneth M. C. Cheung, Kelvin Wai Kwok Yeung
Summary: Confering catalytic defects in sonosensitizers is crucial for enhancing sonodynamic therapy. In this study, 2D catalytic planar defects were designed within Ti3C2 sheets to overcome this challenge. These planar slip dislocations with abundant Ti3+ species can activate O-2, resulting in a significant amount of O-1(2) generation and a high bactericidal capability under ultrasound stimulation. It was found that the 2D catalytic planar defects can intervene in electron transfer through the phonon drag effect, leading to a dramatic decrease in O-2 activation energy.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jianfang Li, Xiangmei Liu, Yufeng Zheng, Zhenduo Cui, Hui Jiang, Zhaoyang Li, Shengli Zhu, Shuilin Wu
Summary: A rapid and effective therapeutic strategy for treating osteomyelitis is reported, utilizing ferroelectric polarization interfacial engineering of BiFeO3/MXene (Ti3C2) triggered by ultrasound. The ferroelectric polarization induced by ultrasound leads to the formation of a piezoelectric field, and the sonoluminescence effect stimulates BiFeO3/Ti3C2 to produce photogenerated carriers. With the synergistic action of the polarization electric field and Schottky junction, the separation of electrons and holes is accelerated, improving the utilization of polarized charges and photogenerated charges, and enhancing the yield of reactive oxygen species. This approach efficiently kills Staphylococcus aureus in a short time with the assistance of ultrasonic heating.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoyu Liu, Haolin Lu, Shengli Zhu, Zhenduo Cui, Zhaoyang Li, Shuilin Wu, Wence Xu, Yanqin Liang, Guankui Long, Hui Jiang
Summary: A self-standing hybrid system Ni18Fe12Al70, composed of Ni2Al3 and Ni3Fe phases, was constructed by laser-assisted Al incorporation for full water splitting. The incorporation of Al effectively tuned the morphologies, compositions, and phases. Ni18Fe12Al70 exhibited extremely low overpotentials for both HER (eta(100)=188 mV) and OER (eta(100)=345 mV) processes and maintained a stable overpotential for 100 h, comparable to state-of-the-art electrocatalysts. The synergistic effect of Ni2Al3 and Ni3Fe alloys on the HER process was confirmed based on theoretical calculations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Qunle Ouyang, Yuxuan Zeng, Yi Yu, Lei Tan, Xiangmei Liu, Yufeng Zheng, Shuilin Wu
Summary: This study explores the sonocatalytic properties of TiO2 nanoparticles with different phases and finds that anatase-brookite TiO2 has the best antibacterial efficiency. It provides a new noninvasive and efficient treatment strategy for wound biofilm infection.
Article
Chemistry, Multidisciplinary
Hongwei Bi, Shengli Zhu, Yanqin Liang, Hui Jiang, Zhaoyang Li, Shuilin Wu, Hao Wei, Chuntao Chang, Hao Wang, Zhenduo Cui
Summary: In this study, Nb-doped anatase TiO2 with Ti vacancies (Nb-TiO2) was prepared through a simple solvothermal and subsequent calcination process. The Nb doping widens the channels for metal ion diffusion, and the cationic vacancies can act as ion storage sites and improve the electrode conductivity. As a result, Nb-TiO2 exhibits improved performance for rechargeable Na/Mg-ion batteries.
Article
Chemistry, Physical
Yuxuan Zeng, Qunle Ouyang, Yi Yu, Lei Tan, Xiangmei Liu, Yufeng Zheng, Shuilin Wu
Summary: Sonodynamic therapy (SDT) has attracted attention for treating deep-seated tumors or infections due to its non-invasiveness and high tissue-penetrating ability. This study develops a defective homojunction porphyrin-based metal-organic framework (MOF) that greatly enhances sonocatalytic ability for SDT of MRSA-infected osteomyelitis. The MOF structure is modified using acetic acid and benzoic acid, and the defect-induced homojunction structure is found to improve the SDT effect by enhancing ultrasound-triggered reactive oxygen species production.
Correction
Engineering, Biomedical
Wenhao Wang, Jie Shen, Yuan Meng, Miaoman Ye, Shaozhang Lin, Qi Zhao, Le Wang, Kenneth M. C. Cheung, Shuilin Wu, Yufeng Zheng, Xuanyong Liu, Paul K. Chu, Kelvin W. K. Yeung, Zhi-Yong Zhang
BIOACTIVE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Chaoyang Wang, Shengli Zhu, Yanqin Liang, Chunling Qin, Fang Wang, Hao Wang, Chuntao Chang, Akihisa Inoue
Summary: We report a novel nanoporous CrFe alloy with ordered structure, which shows rapid strain hardening and high resistance to deformation. The regular skeletons can be entirely compacted between parallel two sides, facilitating the densification of nanoporous alloy. The presence of internal boundaries acts as barriers for dislocation motion, thus improving strain hardening.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Liguo Jin, Xiangmei Liu, Yufeng Zheng, Yu Zhang, Zhaoyang Li, Shengli Zhu, Hui Jiang, Zhenduo Cui, Shuilin Wu
Summary: This study presents a highly effective microwave therapeutic strategy for chronic osteomyelitis (COM), by utilizing the generation of reactive oxygen species (ROS) and heat. The underlying mechanism was determined through density functional theory (DFT) and MW vector network analysis, which demonstrated the formation of a high-energy local electric field and enhanced charge accumulation.
Article
Chemistry, Multidisciplinary
Minyue Ku, Congyang Mao, Shuilin Wu, Yufeng Zheng, Zhaoyang Li, Zhenduo Cui, Shengli Zhu, Jie Shen, Xiangmei Liu
Summary: The rapid development of sonodynamic therapy (SDT) provides a promising strategy for treating deep-seated multidrug-resistant (MDR) bacterial infection. However, the scarcity of biologically functional and efficient sonosensitizers limits the clinical practice of SDT. In this research, lattice-strain-rich Ti3C2 (LS-Ti3C2) was synthesized using Ti3C2 and meso-tetra(4-carboxyphenyl)-porphine (TCPP) to achieve extraordinary SDT. The intervention of TCPP caused structural distortion of Ti3C2, resulting in narrowed band gap and enhanced electron-hole pair separation under ultrasound irradiation, leading to US-mediated reactive oxygen species (ROS) production and robust bactericidal capability against MRSA. This research offers a perspective into the development of Ti-familial sonosensitizers for SDT practice.
Article
Chemistry, Physical
Chaoyang Wang, Shengli Zhu, Yanqin Liang, Chunling Qin, Fang Wang, Hao Wang, Chuntao Chang, Akihisa Inoue
Summary: This study synthesized free-standing nanoporous Ag (NP-Ag) ribbons with a homogeneous and bicontinuous three-dimensional ligament structure using a facile etching method. The NP-Ag ribbons demonstrated stable mechanical performance and excellent flexibility. Additionally, they exhibited remarkable antibacterial capacity, attributed to the rapid release of Ag ions (Ag+) causing damage to bacterial membranes. The in vivo results showed that the NP-Ag ribbons provided rapid antibacterial efficacy and were biosafe due to the long-term stable Ag+ release.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Chongxing Pang, Wence Xu, Yanqin Liang, Zhaoyang Li, Shuilin Wu, Zhenduo Cui, Huaijun Sun, Hui Jiang, Shengli Zhu
Summary: This study reports the preparation and characterization of a nanoporous Ni-based catalyst (NiMoB) prepared by dealloying, which exhibits remarkable electrocatalytic activity and stability in alkaline electrolyte for hydrogen evolution reaction (HER). Density functional theory calculations reveal that the incorporation of Mo and B optimizes the electronic structure of the catalyst and regulates the adsorption of HER intermediates, leading to accelerated HER kinetics.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
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)
