Article
Engineering, Biomedical
W. Pachla, S. Przybysz, A. Jarzebska, M. Bieda, K. Sztwiertnia, M. Kulczyk, J. Skiba
Summary: The study focused on the mechanical properties of Zn and three Zn-Mg double alloys as potential materials for biodegradable medical implants. Different processing methods were used to enhance the properties of the alloys, showing promising results for applications in biodegradable implants, including vascular stents.
BIOACTIVE MATERIALS
(2021)
Article
Metallurgy & Metallurgical Engineering
Jingren Li, Aiyue Zhang, Hucheng Pan, Yuping Ren, Zhuoran Zeng, Qiuyan Huang, Changlin Yang, Lifeng Ma, Gaowu Qin
Summary: The study found that the extrusion speed of Mg-Ca binary alloys affects their microstructures and mechanical properties. Increasing extrusion speed leads to a decrease in yield strength, an increase in elongation, and changes in grain structure.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Composites
Li Zhang, Kun-kun Deng, Kai-bo Nie, Cui-ju Wang, Chao Xu, Quan-xin Shi
Summary: GFs/ZX50 (graphite flakes/Mg-5Zn-0.5Ca) composites were successfully fabricated by ultrasonic-assisted semi-solid stirring followed by extrusion process. The microstructure observation shows that hot extrusion effectively regulates the orientation of GFs. The GFs/ZX50 composites exhibit excellent thermal conductive property of -145.6-174.2 W/(m center dot K) and high yield strength of -386.8-407.8 MPa. The excellent strength-thermal conductivity synergy of the composites is mainly attributed to the highly orientated GFs, the clean Mg-graphite interface, the ultrafine grains, and the MgZn2 nano-precipitates.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yihao Bao, Liang Chen, Jianwei Tang, Zhigang Li, Guoqun Zhao, Cunsheng Zhang
Summary: In this study, a Mg alloy with alloying elements of Zn, Al, Sn, and Mn was designed, and hot extrusion was carried out at various speeds and temperatures. It was found that high speed extrusion resulted in more second phase particles, while high extrusion temperature increased the number of second phases, grain size, and dynamic recrystallization degree. The sample extruded at a speed of 10 mm/min and temperature of 300 degrees C showed the highest yield strength, tensile strength, and corrosion resistance.
MATERIALS CHARACTERIZATION
(2021)
Article
Metallurgy & Metallurgical Engineering
Sang-Cheol Jin, Jong Un Lee, Jongbin Go, Hui Yu, Sung Hyuk Park
Summary: This study investigates the effects of Sn addition on the microstructural characteristics and mechanical properties of an extruded Mg-Bi binary alloy. The results show that the addition of Sn significantly decreases the average grain size and improves the tensile strength and ductility of the alloy. These improvements are attributed to grain refinement, Sn solute atoms, and increased dislocation density.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Chuanqiang Li, Binbin Deng, Linjie Dong, Xi Liu, Kaiquan Du, Binqing Shi, Yong Dong, Feng Peng, Zhengrong Zhang
Summary: The addition of zinc has a significant impact on the microstructure and mechanical properties of as-cast BCC Mg-11Li based alloys, affecting the type and volume fraction of precipitated phases. Solid-solution treatment can enhance the mechanical properties of the alloy, but also results in a significant reduction in elongation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yao Li, Guofu Xu, Shichao Liu, Baofeng Wang, Xiaoyan Peng
Summary: In this study, the anisotropy of the Al-Zn-Mg-Sc-Zr alloy sheet in the peak-aged state was analyzed, showing that grain orientation and Schmid factor significantly affect the alloy properties. Samples at 0 degrees and 90 degrees have higher strength but lower elongation due to wider distribution of Schmid factors, while samples at 45 degrees and 60 degrees have lower strength but higher elongation due to narrower distribution of Schmid factors.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Gaoliang Shen, Zhilei Xiang, Xiaozhao Ma, Jingcun Huang, Yueqing Zhao, Jihao Li, Zhitian Wang, Guodong Shi, Ziyong Chen
Summary: This study prepared a high-strength Al-Zn-Mg-Cu aluminum alloy using rapid solidification and hot extrusion, and analyzed the improvement mechanism of the alloy's microstructure. The results showed that rapid solidification technology could significantly refine the alloy grain. After hot extrusion, the alloy partially recrystallized and formed coarse second-phase and needle-shaped precipitates. After T6 heat treatment, the alloy's tensile strength reached 635.8 MPa, but the elongation decreased to 10.5%. It was found that precipitation strengthening was the main strengthening mechanism.
Article
Nanoscience & Nanotechnology
Yangchao Deng, Wei Sun, Yang Yang, Hongyi Zhan, Kun Yan, Guang Zeng
Summary: The impacts of Mg2Sn precipitation on the age-hardening and deformation behavior of a Mg-4Sn-3Al-1Zn alloy have been studied. The alloy shows moderate hardening during ageing treatment at 175℃, with a significant increase in yield tensile strength but reduced elongation. Nanosized Mg2Sn precipitates are uniformly distributed within grains, improving tensile strength properties. Coarsened Mg2Sn precipitates and precipitate-free zones (PFZs) can be observed along grain boundaries. Tensile deformation primarily occurs in slip band array regions in grain interiors for the solution-treated alloy, and in PFZs for the as-aged alloy. The decrease in tensile ductility is caused by early intergranular microcracks initiated by coarse grain boundary Mg2Sn precipitates and PFZs. The results provide insights for developing affordable Mg alloys with a balanced combination of strength and ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Yuzhao Xu, Jingyuan Li, Mingfan Qi, Wenhui Guo, Yue Deng
Summary: This study investigated the influence of extrusion temperature on the microstructure, mechanical properties, and corrosion behavior of ZGMS alloy. The results showed that lower extrusion temperature led to refined grain size and improved mechanical properties. The alloy exhibited excellent mechanical properties and low corrosion rate after extrusion at 360 degrees Celsius.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Ya Liu, Jiuba Wen, Huan Li, Junguang He
Summary: The effects of extrusion temperature and extrusion ratio on the microstructure, corrosion resistance, and mechanical properties of Mg-Zn-Gd-Y-Zr alloy were investigated. Higher extrusion temperatures and larger extrusion ratios were found to result in better mechanical properties and corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Feipeng Yang, Jianying Wang, Tao Wen, Lei Zhang, Xixi Dong, Dong Qiu, Hailin Yang, Shouxun Ji
Summary: The AM aluminium alloy Al5Mg3Zn2Si developed in this work exhibits high strength, ductility, and excellent mechanical properties without the addition of costly alloying elements. With an optimized relative density and refined microstructure, it has great potential for automotive and aerospace applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Hao Chen, Conglin Hu, Faping Hu, Xuefei Liu, Fanxiao Kong, Weidong Xie, Guobing Wei, Yan Yang, Xiaodong Peng, Yuanding Huang, Norbert Hort
Summary: A combination of conventional extrusion (CE) and rotary swaging (RS) was used to produce high-strength Mg alloys. Compared to the as-extruded alloys, the as-swaged alloys showed significantly increased strength. This increase in strength was attributed to fine grains, higher density of nanoscale spheroidal Al-Mn precipitates, and dislocations caused by RS.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Yuanxiao Dai, MengHan Xiao, Yaobo Hu, Yan Yang, Bin Jiang, Tianxu Zheng, Li Dong, Baoqing Yang, Changyong Zheng
Summary: By designing extrusion parameters, the Mg-0.12Ca-0.08Ba alloy underwent grain refinement and texture control, resulting in the best performance of the extruded samples with different crystallographic orientations.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Zeru Wu, Jianmin Yu, Ziwei Zhang, Hongbing Hu, Zhimin Zhang
Summary: The static recrystallization behavior of a deformed Mg-13.14Gd-3.86Y-2.0Zn-0.39Zr alloy after different annealing treatments was investigated. The degree of recrystallization increased with higher annealing temperatures. The main mechanism for recrystallized grains formation was the transformation of low-angle grain boundaries into high-angle grain boundaries. The annealing treatment also resulted in a decrease in dislocation density and average grain size. Furthermore, the precipitation behavior of the Mg5(Gd,Y) phase changed from grain boundaries to inside the grains. The annealing treatment consumed the LPSO phases and caused a decrease in the basal texture strength of the alloy.
Article
Chemistry, Multidisciplinary
Yutong Wu, Chuangwei Liu, Yinglei Liu, Gaowu Qin, Song Li
Summary: This study presents a two-step method to fabricate oxide-derived Cu nanowires on Cu mesh surface, which serves as a monolithic catalyst significantly enhancing the hydrogen production via reforming formaldehyde and water under ambient conditions. The experimental findings illustrate that the special oxide-derived nanostructure not only improves the formaldehyde reforming performance of Cu, but also demonstrates a linear relationship between hydrogen production and oxygen pressure. Remarkably, the hydrogen generation rate increases up to 36 times compared to that without oxygen during the reaction. Density functional theory calculations reveal that formaldehyde molecules adsorb on the Cu surface only when oxygen is in adjacency, and the hydrogen release process becomes the rate-determining step. This work emphasizes that the activity of intentionally synthesized catalysts can be further promoted by dynamically modulating surface states during operation.
CHINESE CHEMICAL LETTERS
(2023)
Review
Chemistry, Multidisciplinary
Chuangwei Liu, Ang Tian, Qinye Li, Tianyi Wang, Gaowu Qin, Song Li, Chenghua Sun
Summary: Environmentally friendly ammonia production is crucial for addressing the carbon emissions and energy consumption issues in the chemical industry. Recent developments in 2D electrocatalysts have shown potential in converting dinitrogen into ammonia under ambient conditions. This review systematically summarizes the progress, challenges, and opportunities of 2D-based electrochemical materials in achieving efficient and stable catalysis for nitrogen reduction.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Electrochemistry
Tianshui Yu, Xiangji Zhou, Yu Chen, Jin Chen, Songliu Yuan, Zhen Zhang, Lihua Qian, Song Li
Summary: A hierarchically nanoporous gold (H-NPG) with high CO conversion of 96% was configured, which is mainly determined by the high fraction of active sites onto the nanoscale skeletons and the high volume of hierarchically nanoporous channels. In addition, the H-NPG exhibits robust durability with only a 22% reduction of CO specific current density after 22 hours of CO2ER, compared to a 55% reduction in nanoporous gold (NPG) with nanoporous channels. This durability is attributed to the conversion of some crystalline facets with low activity to (110) facets with high activity during CO2ER.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Yang Bai, Haitao Fu, Xiaohong Yang, Shixian Xiong, Song Li, Xizhong An
Summary: In this study, pristine In2O3 nanosheets and Ce-doped In2O3 hierarchical microstructures assembled by nanosheets were synthesized using a simple hydrothermal method and subsequent calcination with the aid of surfactants. The addition of Ce induced lattice distortion, leading to improved sensing performance. Gas sensing tests showed that Ce doping significantly enhanced the sensing performance of In2O3 towards isopropanol. Among the various molar ratios of Ce-doped samples, 4 at % Ce-In2O3 nanosheets exhibited the highest sensing response (93), which was 6 times higher than that of pristine In2O3 at the optimized working temperature of 220 degrees C. Moreover, the Ce-In2O3 samples demonstrated short response and recovery time, high selectivity, broad dynamic range, and acceptable long-term stability. The improved sensing performance was attributed to the altered lattice and band structures, enhanced electron transfer ability, and increased charge carrier density.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Chuangwei Liu, Derek Hao, Jin Ye, Sheng Ye, Fengling Zhou, Hongbo Xie, Gaowu Qin, Jiating Xu, Jian Liu, Song Li, Chenghua Sun
Summary: The room-temperature nitrogen reduction reaction (NRR) has great importance in the fertilizer industry and fundamental catalysis science. This study demonstrates the knowledge-driven design of boron-doped TiO2 as a photocatalyst for NRR. Among 54 catalysts, boron-doped anatase TiO2(101) is identified as an exceptional NRR catalyst with strong visible-light absorption and excellent reactivity. Experimental validation shows that B-doped TiO2 nanosheet achieves high ammonia production under simulated sunlight, renewing the performance record for Ti-based photocatalysts for NRR. This work highlights the importance of dual active site catalysts for nitrogen activation and reduction and demonstrates the capacity of knowledge-driven catalyst design.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yinglei Liu, Chuangwei Liu, Huiying Zhou, Gaowu Qin, Song Li
Summary: Nanometal photocatalysts are widely used for accelerating reactions and adjusting the selectivity of multipath reactions. This study shows that light irradiation can change the selectivity of benzyl alcohol oxidation over Au/& gamma;-Al2O3 catalyst, from benzaldehyde in the dark to benzoic acid under light. Competitive adsorption of benzyl alcohol and benzaldehyde plays a crucial role in selectivity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Xia Wei, Hongbin Dai, Yanni Li, Tianyao Wang, Song Li
Summary: This study presents a novel Ni-B-P/NF catalyst for hydrazine electrooxidation through a facile electroless plating process. The catalyst exhibits remarkable catalytic activity and excellent long-term durability, making it a promising candidate for energy storage and fuel cell systems.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jiajia Cai, Zhichao Xu, Xiangxuan Tang, Hao Liu, Xinyu Zhang, Haijin Li, Jianmin Wang, Song Li
Summary: Bimetallic metal-organic frameworks (MOFs) and their derivatives were developed to regulate the morphology and activity of intermediates for catalyzing oxygen and hydrogen generation. The activity and morphology of the catalysts were strongly correlated with the atomic ratio of Ni and Co. Integration of Ni0.1Co0.9-MOF and Ni0.1Co0.9P successfully drove overall water splitting, highlighting the importance of efficient MOFs/derivatives catalysts and novel combinations for water electrolysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Chuangwei Liu, Haoren Zheng, Tianyi Wang, Zhongyuan Guo, Fangyuan Zhu, Hongbo Xie, Gaowu Qin, Hao Li, Song Li
Summary: In this study, boron-based, metal-free catalysts for room-temperature electrocatalytic nitrogen reduction reaction (NRR) were explored using density functional theory calculations. The results showed that the NRR performance of the boron active site could be improved by tuning the N-coordination environment on a graphene sheet, and the B-N-C structures exhibited excellent stability. By considering the correlation between the Bader charges of the boron dopant and their NRR activities, a rational design principle for boron-based catalysts for NRR was developed. The study also revealed that the charge loss of boron hindered hydrogen adsorption and promoted NRR efficiency by inhibiting competing hydrogen evolution.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
S. Y. Peng, Y. Z. Tian, Y. Yang, M. Jiang, H. X. Li, J. W. Wang, S. Li, G. W. Qin
Summary: In this study, a powder rolling strategy was successfully used to fabricate fully dense Cu-10Fe billet, solving the challenges of Fe macrosegregation during casting and limited sample size in traditional powder metallurgy methods. The microstructure evolution at different processing stages was characterized, revealing the successful avoidance of Fe macrosegregation and the achievement of good metallurgical bonding quality between powders. Moreover, the formation mechanisms of ordered structures and precipitates were analyzed, and the variation of mechanical and electrical properties with aging process was discussed.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Multidisciplinary Sciences
Bo Yang, Zhiming Zhang, Peitao Liu, Xiankai Fu, Jiantao Wang, Yu Cao, Ruolan Tang, Xiran Du, Wanqi Chen, Song Li, Haile Yan, Zongbin Li, Xiang Zhao, Gaowu Qin, Xing-Qiu Chen, Liang Zuo
Summary: This study proposes a method to greatly enhance solar absorption by introducing a flat-band electronic structure. By incorporating metallic oxide λ-Ti3O5 particles into a three-dimensional porous hydrogel-based evaporator and utilizing a special structure, efficient solar-to-steam generation is achieved, providing a new solution for seawater desalination and wastewater treatment.
Article
Engineering, Chemical
Haitao Fu, Hongming Zhao, Xiaolang Li, Fu Chen, Xiaohong Yang, Shixian Xiong, Song Li, Xizhong An
Summary: In this study, CdZnS nanorods modified with MoS2 nanosheets were prepared, and the optimization of CdZnS nanorods was achieved by adjusting the Zn content. The results showed that the Cd:Zn = 9:1 sample exhibited the highest photocatalytic H2 production rate. By loading MoS2 nanosheets on the surface of the Cd:Zn = 9:1 sample, the highest H2 production rate was achieved. Electrochemical experiments revealed the mechanism behind the improved performance.
Article
Materials Science, Multidisciplinary
Teng Zhang, Yi-Hong Yu, Chuang-Wei Liu, Gao-Wu Qin, Song Li
Summary: In this study, a Ni4W/WO3 electrocatalyst with a strongly coupled interface on the Ni foam was synthesized by phase transition of NiWO4, leading to enhanced activity for alkaline hydrogen production. The strong binding hydroxyl on WO3 sites facilitates water dissociation and promotes hydrogen evolution through the synergy effect of strong adsorption of H on Ni sites.
Article
Chemistry, Analytical
Peng He, Haitao Fu, Yanlong Gong, Jie Chen, Xiaohong Yang, Dezhi Han, Shixian Xiong, Song Li, Xizhong An
Summary: In order to detect flammable gases and reduce energy consumption, room-temperature gas sensors with high sensitivity, selectivity, and stability have become increasingly popular. In this study, SnO2@ZnS core-shell hollow spheres were prepared using a two-step hydrothermal method. The effects of morphology and composition on gas sensing performance were investigated by adjusting the molar ratio of SnO2 to ZnS. The core-shell composites showed excellent sensing properties to n-butanol, with a sensing response four times higher than that of the pristine SnO2 hollow spheres.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Xiangji Zhou, Yongqi Liu, Lin Liu, Yao Yu, Jiangang Xu, Min Ruan, Song Li, Lihua Qian
Summary: This study regulates the reconstruction of amorphous Bi shell forming onto nanoporous AgBi during CO2ER, and confirms the optimal reconstruction potential to be -1.05 V. The surface reconfiguration and catalytic property conversion along with the reconstruction are identified through in-situ electrochemical and spectroscopic characterizations. The reconstructed catalyst achieves high Faradaic efficiency and durability thanks to the special nanoporous core-shell structure.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
