Article
Chemistry, Inorganic & Nuclear
Xing Qin, Jinhua Zhang, Changming Ke, Hui Chen, Lei Zhao
Summary: The precursor gel was prepared using a sol-gel method, and ultrafine TiN was obtained by Fe-catalyzed carbon thermal reduction nitridation reaction. The addition of Fe significantly promoted the reaction, resulting in ultra-fine TiN nanoparticles with an average size of about 24 nm. The promotion effect of Fe is due to its role in providing nucleation sites for amorphous titanium oxide and facilitating the dissociation of N2.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yaoxu Zhu, Deren Li, Zhiguo Wu, Shurong Xu, Yi Zhao, Yongshun Zhang, Shuofeng Wang, Juan Shi, Jun Tang, Penxun Yan
Summary: Recent findings show that EG composite with metal nanoparticles has excellent performance in absorbing materials. The NBEG/Fe composites, with low graphitization degree and sandwich structure, have better absorption performance in the 2-18 GHz range compared to pure EG and BEG/Fe, effectively absorbing electromagnetic microwaves in different frequency bands.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Mengjia Wei, Lei Wang, Sajjad Ur Rehman, Wenmiao Zhang, Shuqi Shen, Biyun Peng, Yifeng Hu, Tongxiang Liang
Summary: In this study, Fe3O4/C@SiC nanocomposites were synthesized and demonstrated excellent microwave absorption performance. The combination of magnetic Fe3O4 and porous carbon optimized the impedance matching of the material and improved its attenuation capability. Furthermore, the study highlighted the potential of SiC for microwave absorption applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Qi Qin, Jing Chen, Meng Song, Fengyi Cao, Yunan Li, Fang He, Zhongzhu Liu, Genxing Zhu, Quan Diao
Summary: In this study, silicon carbide nanowires were successfully prepared by microwave sintering using graphene and ethyl orthosilicate as precursors. The samples were fully characterized and analyzed by XRD, FTIR, and SEM. The results demonstrated that microwave sintering is a more energy-efficient, cost-saving, and efficient way to synthesize SiC.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Chemical
Xing Qin, Hui Chen, Jihong Pang, Lei Zhao, Jinhua Zhang
Summary: TiN nanoparticles were prepared using a Ni-catalysed carbothermal reduction nitridation process. Nickel was found to significantly promote the reaction and enhance the efficiency of carbothermal reduction nitridation.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Physics, Applied
Ganying Zeng, Zhenyu Fang, Chengbing Qin, Liantuan Xiao, Suotang Jia
Summary: In this work, we developed a method to tune the lattice distortion of multilayer graphene using H2SO4-intercalation, which leads to the acquisition of noncentrosymmetric electric dipoles and enhances the second-harmonic generation (SHG) response. The SHG change is reversible after deintercalation, as the lattice distortion can be restored. Our research on the intercalating-induced SHG effect may contribute to a better design of graphene-based nonlinear optical devices in the future.
APPLIED PHYSICS LETTERS
(2023)
Article
Multidisciplinary Sciences
Ingrid Torres, Sadegh Mehdi Aghaei, Nezih Pala, Angelo Gaitas
Summary: Graphene and multilayer graphene (MLG) have versatile properties and wide applications, but their production is challenging. This paper explores metal-induced crystallization to synthesize MLG directly on metal films and insulating substrates at much lower temperatures. Raman spectroscopy confirms the MLG properties of the synthesized carbon structure. The presented tip-based approach offers a simpler fabrication solution for MLG by eliminating photolithographic and transfer steps.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Baoyi Hao, Zechao Tao, Xi Yan, Wei Liu, Yun Luo, Zhanjun Liu, Dong Jiang
Summary: SiC nanowires confirmed to be beta-SiC were successfully synthesized on expanded graphite using Si/SiO2 mixtures as the silicon source. The SiCNWs/EG composites exhibited excellent electromagnetic wave absorption performance, which was mainly attributed to the introduction of SiCNWs enhancing the polarization of dipole and improving impedance matching.
Article
Chemistry, Physical
Mingtao Wang, Zecheng Wang, Zhiyue Yang, Jianfeng Jin, Guoping Ling, Yaping Zong
Summary: In this study, iron matrix composites reinforced by both SiC and TiCx particles were fabricated using fast resistance-sintering technology. The in situ formation of TiCx from the decomposition of Ti3AlC2 during sintering was confirmed by XRD and EDS analyses. A hybrid reinforcing effect was discovered in the composites, with the (SiC + TiCx)(p)/Fe composites showing higher strength and hardness compared to monolithic SiCp/Fe and (TiCx)(p)/Fe composites.
Article
Physics, Applied
Yong Han, James W. Evans, Michael C. Tringides
Summary: The study investigates the kinetic process of foreign guest atom intercalation into graphene layers and provides numerical values for the critical energy barriers through theoretical calculations.
APPLIED PHYSICS LETTERS
(2021)
Article
Environmental Sciences
Alessio Siciliano, Giulia Maria Curcio, Carlo Limonti, Salvatore Masi, Michele Greco
Summary: The study demonstrated that thermo plasma expanded graphite (TPEG) is an effective adsorbent material for the removal of methylene blue (MB) from contaminated solutions. The optimal adsorption performance was observed at pH 11, with the process mainly related to electrostatic interactions. Increasing temperature resulted in enhanced adsorption capacity, particularly at initial concentrations higher than 10 mgMB/L.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Materials Science, Ceramics
Biao Zhang, Wenqi Xie, Huaizhi Lin, Zhilei Wei, Zhichao Xiao, Kai He, Zhongqi Shi
Summary: Ceramic-coated graphite powders were successfully prepared by nitriding combustion synthesis, and the effects of PTFE content and Si/MCMB molar ratio on the coating morphology were investigated. It was found that under specific conditions, graphite@SiC composites with excellent properties could be synthesized.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Materials Science, Ceramics
Yijing Sun, Lijun Zheng, Shaowei Zhang, Xudong Luo, Feng Liu, Yong Li
Summary: Al2O3-SiC composite powder was successfully synthesized using a novel molten-salt-assisted aluminum/carbothermal reduction method. The addition of the molten salt played an important role in the formation of SiC whiskers. The optimal synthesis condition was achieved at 1573K for 4 hours.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Yufeng Li, Yehui Bi, Yue Xing, Jining He, Yanfang Qin, Hongjian Zhao
Summary: A TiC-Ti5Si3-SiC composite coating was prepared using atmospheric plasma spraying, and the effect of graphite content on the properties of the coating was studied. The results showed that an appropriate amount of graphite can improve the comprehensive properties and wear resistance of the coating.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Taisei Suzuki, Hiromasa Murata, Yuya Kado, Takamitsu Ishiyama, Noriyuki Saitoh, Noriko Yoshizawa, Takashi Suemasu, Kaoru Toko
Summary: In this study, controlled thickness multilayer graphene (MLG) was fabricated at low temperatures using a layer exchange technique. The results show that increasing MLG thickness can enhance the total capacity, although the formation of metal oxide at the MLG/Ta interface during annealing is a concern.
ACS APPLIED MATERIALS & INTERFACES
(2022)
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)