Article
Geosciences, Multidisciplinary
Zhiwei Liao, Xianfeng Liu, Dazhao Song, Xueqiu He, Baisheng Nie, Tao Yang, Longkang Wang
Summary: The technology of liquid carbon dioxide phase change fracturing (LCPCF) was used to enhance the permeability of coal seams. LCPCF had mechanical damage effects on coal micro-structures to varying degrees. HP-MIP results showed that LCPCF mainly affected pores of > 100 nm within coal and resulted in the increase in the number of macro-pores and micro-fractures.
NATURAL RESOURCES RESEARCH
(2021)
Article
Energy & Fuels
Yi Xue, P. G. Ranjith, Yang Chen, Chengzheng Cai, Feng Gao, Xingguang Liu
Summary: Geological sequestration of CO2 is important for reducing global warming and achieving carbon neutralization. This study evaluates the effect of CO2 adsorption pressure on the mechanical properties of coal mass using experimental and analytical methods. An elastic damage model is established to describe the nonlinear stress-strain relationship of coal under CO2 adsorption. The results show that increasing adsorption pressure increases the risk of coal damage and fracturing, leading to a more complex fracturing process.
Article
Energy & Fuels
Binwei Xia, Xianfeng Liu, Dazhao Song, Xueqiu He, Tao Yang, Longkang Wang
Summary: LCPCF technology has the potential to enhance coalbed methane drainage by enlarging pore diameter and increasing total pore volumes of treated coal samples, leading to a more regular and homogeneous pore structure. Gas content and gas emission index show a negative relationship with fractal dimension, while coal permeability demonstrates an exponential increasing trend with the decline of fractal dimension. Fractal theory bridges the gap between pore structure and methane flow, and is expected to be widely used for evaluating fracturing effect in coal seams.
Article
Energy & Fuels
Xi Wu, Chunshan Zheng, He Li, Jiexin Lu, Yi Lu, Shiliang Shi, Yuannan Zheng, Zheng Wang
Summary: This study analyzed the pore structure and surface morphology of coal samples treated with microwave-liquid nitrogen cyclic processing (MLCP). The results showed that MLCP can increase coal reservoir permeability, and the frequency of cycles has a significant impact on pore volume.
Article
Energy & Fuels
Erlei Su, Yunpei Liang, Quanle Zou
Summary: The study focused on the effects of cyclic ScCO2 treatment on coal samples, showing significant increases in porosity and macropore proportion after treatment. It was found that new pores were formed and some small pores might have been converted into macropores. Additionally, the pore roughness and complexity decreased after cyclic treatment, indicating changes in coal-pore structures and potential impacts on CO2-ECBM projects.
Article
Energy & Fuels
Ruiyue Yang, Haitao Wen, Zhongwei Huang, Bo Zhang, Haizhu Wang, Bin Wang, Nikita Dubinya
Summary: A new compound fracturing method combining liquid nitrogen (LN2) fracturing and hydraulic fracturing is proposed in this study to improve the efficiency of hydraulic fracturing in coalbed methane (CBM) reservoirs. Lab results show that the compound fracturing method can create more complex and highly conductive fracture networks compared to traditional fracturing methods.
Article
Engineering, Geological
Xianfeng Liu, Baisheng Nie, Kunyong Guo, Chengpeng Zhang, Zepeng Wang, Longkang Wang
Summary: The liquid carbon dioxide phase change fracturing technology can effectively increase coal permeability, with the impact decreasing as the distance from the fracturing borehole increases. The influence of LCPCF on coal can be divided into three stages based on distance, with the greatest impact observed within 1.0 m and diminishing effects at distances greater than 6.0 m.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Geological
Peng Hou, Shanjie Su, Feng Gao, Xin Liang, Shengcheng Wang, Yanan Gao, Chengzheng Cai
Summary: The role of LN2 cooling in the fracturing process of coal and its effects on the mechanical properties and fracture behaviors of the coal samples have been investigated through laboratory experiments and numerical simulations.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Zhaolong Ge, Yudong Hou, Zhe Zhou, Zepeng Wang, Maolin Ye, Shan Huang, Hui Zhang
Summary: A method of reconstructing 3D pore-fracture networks using nuclear magnetic resonance and CT was proposed, and the relationship between the structural characteristics of the networks and permeability was studied. The permeability evolution under high-pressure CO2 was investigated using COMSOL software, and a reliable model was established for predicting permeability.
NATURAL RESOURCES RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Lei Qin, Siheng Lin, Haifei Lin, Shugang Li, Pengxiang Zhao, Weikai Wang, Zitong Xue
Summary: Studying the ice-water phase transition process of frozen coal is key to break through the theory of cryogenic mining technology.
NATURAL RESOURCES RESEARCH
(2022)
Article
Thermodynamics
Shumin Liu, Haitao Sun, Dongming Zhang, Kun Yang, Xuelong Li, Dengke Wang, Yaning Li
Summary: This study investigated the pore structure and fractal characteristics of different coal qualities (anthracite, bituminous coal, and lignite) under liquid nitrogen cold soaking. The study examined the variations in BET specific surface area, BJH total hole, and adsorption pore specific surface area with liquid nitrogen cold soaking times. The results showed that bituminous coal had the highest internal micropore content and the largest adsorption space for gas, followed by anthracite and lignite. The findings provide theoretical and experimental support for the application of liquid nitrogen to increase the permeability of coal seams.
Article
Engineering, Chemical
Wendi Wang, Zhen Liu, Mingrui Zhang, He Yang
Summary: In this paper, nitrogen adsorption measurement and low-field nuclear magnetic resonance methods are used to test the structural parameters of adsorption pores of different coal samples. It is found that the complexity of the pore size distribution increases with the increase in metamorphic degree. There is a positive correlation between the fractal dimension and the maximum adsorption capacity of N-2.
Article
Engineering, Chemical
Kun Zhang, Huihu Liu, Mengya Ma, Hongjie Xu, Huihuang Fang
Summary: This study investigates the pore-fracture structure parameters of tectonically deformed coal and primary-undeformed coal through fractal analysis. The results show that the pore-fracture structure of tectonically deformed coal samples is more conducive to the injection and storage of CO2, indicating promising geological potential for CO2-ECBM implementation.
Article
Thermodynamics
Weile Geng, Gun Huang, Shengli Guo, Changbao Jiang, Ziwen Dong, Wensong Wang
Summary: The study revealed that the proportion of macropores in coal increased while the proportion of mesopores decreased after CH4 or CO2 treatment, leading to a looser coal structure. The microcrystalline structure parameters also changed significantly, indicating the evolution of coal pore structures under long-term gas adsorption.
Article
Thermodynamics
Jiawei He, He Li, Wei Yang, Jiexin Lu, Yi Lu, Ting Liu, Shiliang Shi
Summary: Acid fracturing is a potential method to enhance permeability in coalbed methane extraction, but its performance in coal reservoir is still unclear. This study characterized the surface morphology and internal pore structure of coal under matrix acidification and found that bituminous coal showed higher acid sensitivity and greater erosion rate and pore structure changes compared to anthracite. These results provide reference for selecting acid pad fluids for acid fracturing in different coal seams.
Article
Instruments & Instrumentation
Kewei Wu, Xuewei Jia, Tao Yang, Mengzhao Li, Wei Wang, Mei Zhao, Zhijun Liang, Joao Guimaraes da Costa, Yunyun Fan, Han Cui, Alissa Howard, Gregor Kramberger, Xin Shi, Yuekun Heng, Yuhang Tan, Bo Liu, Yuan Feng, Shuqi Li, Mengran Li, Chengjun Yu, Xuan Yang, Mingjie Zhai, Gaobo Xu, Gangping Yan, Qionghua Zhai, Mingzheng Ding, Jun Luo, Huaxiang Yin, Junfeng Li
Summary: The low gain avalanche detectors (LGADs) provide excellent time resolution of about 30 ps for Minimum Ionizing Particles (MIP) due to their thin sensors with fast charge collection and internal gain. However, the upgraded Large Hadron Collider (LHC) in 2028 will cause radiation damage and deterioration of LGAD performance due to high collision and particle rates. To mitigate such effects, the Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS) has developed a process to enrich the gain layer of LGADs with carbon, reducing the acceptor removal effect caused by radiation. These modified LGAD sensors have demonstrated adequate charge collection (>4 fC) and time resolution (<50 ps) at voltages <400 V, even after exposure to a maximum fluence of 2.5 x 10(15) neutron equivalent fluence of 1 MeV at ATLAS High Granularity Timing Detector (HGTD).
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Energy & Fuels
Qiusheng Ye, Chengwu Li, Tao Yang, Yilin Wang, Zhenfei Li, Yifan Yin
Summary: This study investigates the desorption and diffusion of methane in coal seams using an experimental system, and finds that the desorption process is a heat absorption and cooling process influenced by equilibrium pressure and the particle size of the coal samples. The results have important implications for accurately measuring coal bed methane content and preventing and controlling coal mine gas disasters.
Article
Materials Science, Coatings & Films
Zhihao Li, Linjiang Chai, Lan Qi, Yueyuan Wang, Yuanzhuo Liu, Tao Yang, Hao Wang, Ning Guo, Yuxiang Zhao
Summary: In this study, two Al-Cr-Ti ternary alloy coatings were fabricated on a Ti-4Al-2V alloy substrate using a pulsed laser cladding method. The microstructure characteristics of the coatings were revealed using various characterization methods, with their hardnesses and wear rates measured. The results showed that the coatings had a body-centered cubic phase related to non-equilibrium solidification and sluggish diffusion of alloying elements. The enhanced performance of the coatings was attributed to joint strengthening from strong solid solution and lattice distortion, as well as phase structure differences from the substrate induced by Al/Cr.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Polymer Science
Peng Zhang, Yadong Dai, Hansong Liu, Botao Dong, Yilun Yao, Jinsong Sun, Tao Yang, Xiangyu Zhong, Jianwen Bao
Summary: A molecular model of polyimide (PI) was constructed to compare the performance of PIs with different structures. Molecular simulations were conducted to investigate the structure, prepolymer melt viscosity, and glass-transition temperature (T-g) of cross-linked PI resin. The results suggest that benzene ring and polyene-type cross-linked structures dominate the properties of the PIs. The findings provide important reference for PI design and have significant value in improving the efficiency of new product development.
Article
Nanoscience & Nanotechnology
Zhichao Hao, Gen Liu, Lin Ren, Jiangchen Liu, Chuanzi Liu, Tao Yang, Xiangnan Wu, Xinchun Zhang, Ling Yang, Juan Xia, Weichang Li
Summary: Developing an effective treatment strategy for diabetic wound healing is a major challenge in clinical practice due to multidrug-resistant bacterial infections, angiopathy, and oxidative damage. This study designed a self-healing hydrogel with interpenetrating networks formed by multiple-dynamic bond cross-linking. The hydrogel showed excellent autonomous healing mediated by reversible breakage of Schiff bonds and reinforced by other noncovalent interactions. Incorporation of cathelicidin LL-37 in the hydrogel significantly promoted diabetic wound healing by various mechanisms. Therefore, this study provides an effective and safe strategy for diabetic wound treatment in clinical applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Hao Jie Kong, Tao Yang, Rong Chen, Zengbao Jiao, Tianlong Zhang, Boxuan Cao, Junhua Luan, Shaofei Liu, Anding Wang, Jacob Chih-Ching Huang, Xun-Li Wang, Chain Tsuan Liu
Summary: High-performance, low-cost structural materials with nanoscale precipitations are essential for advanced industry systems. Traditional nucleation mechanisms have limitations in achieving fine dispersion of nanoscale precipitates. However, a revolutionary approach of ultra-strong iron-based alloys has successfully resolved these issues through non-classical nanoscale precipitations and multi-elemental partitioning. This strategy allows for control of nanoscale precipitates with low solute supersaturation, resulting in enhanced strength and ductility, superior fabricability, and post-weld properties.
Article
Materials Science, Multidisciplinary
Long Jin, Zhaoyu Li, Haichao Huang, Xiang Chu, Weili Deng, Jieling Zhang, Yong Ao, Tianpei Xu, Guo Tian, Tao Yang, Lihua Tang, Weiqing Yang
Summary: This study proposes an experimental approach to regulate MXene fluorine groups by alkalization to validate its performance enhancement in triboelectric nanogenerator (TENG). It is found that compared with alkalized MXene-based TENGs, MXene-based TENG achieves significant enhancement in open-circuit voltage, short-circuit current, and output power, indicating its potential for flexible sensing and energy harvesting.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Y. L. Zhaoa, F. L. Meng, T. Yang, J. H. Luan, S. F. Liu, G. M. Yeli, W. T. Lin, W. H. Liu, X. J. Liu, C. T. Liu, J. J. Kai
Summary: In this study, a novel L1 2 -strengthened HEA alloy was irradiated with He ions, and the microstructural stability and radiation-induced segregation were investigated using TEM and APT. The results showed that the irradiated HEA exhibited improved irradiation resistance and reduced bubble size, attributed to the trapping efficiency of the precipitate/matrix interface and the interface's enhanced capability for damage elimination. The irradiation-induced diffusion and precipitation dissolution and re-precipitation also contributed to the alloy's radiation tolerance and self-healing effect.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
T. H. Chou, W. P. Li, H. W. Chang, B. X. Cao, J. H. Luan, J. C. Huang, T. Yang
Summary: Hetero-grain/precipitation engineering was used to improve the mechanical properties of an alloy over a wide temperature range. By introducing partial recrystallization and L12 nanoprecipitation, a heterogeneous microstructure was achieved in a CoCrNi-based medium entropy alloy. This alloy demonstrated an ultrahigh tensile strength of 1.5 GPa at 500 degrees C and maintained a tensile strength above 1.1 GPa at 600 degrees C. Furthermore, it exhibited excellent elongation properties at temperatures ranging from -196 degrees C to 700 degrees C, overcoming temperature-dependent embrittlement commonly observed in materials with equiaxed grain structures. The superior combination of strength and ductility at elevated temperatures was attributed to the stable deformed grains and pronounced planar defects present in the alloy.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Y. L. Zhao, W. C. Xiao, Z. K. Zhao, Q. Li, J. Cui, J. H. Luan, C. T. Liu, P. K. Liaw, T. Yang
Summary: We designed a Co-rich chemically complex intermetallic alloy with an L12-type ordered structure, which possesses an ultrahigh tensile strength and substantial ductility, outperforming most Co-rich intermetallic alloys.
SCRIPTA MATERIALIA
(2023)
Article
Food Science & Technology
Shenglan Lu, Xueying Li, Xunran Wei, Caihuan Huang, Jie Zheng, Shiyi Ou, Tao Yang, Fu Liu
Summary: The study fabricated and characterized a natural quercetin self-stabilizing Pickering emulsion. The antisolvent treatment was found to improve the emulsification performance of quercetin particles. The emulsion showed good storage stability and the particle size varied with particle concentration and oil phase ratio. This study highlights the potential application of natural quercetin in the development of functional emulsion foods.
Article
Materials Science, Multidisciplinary
Liming Yang, Tao Yang, Enhui Wang, Xiangtao Yu, Kang Wang, Zhentao Du, Sheng Cao, Kuo-Chih Chou, Xinmei Hou
Summary: In this study, hierarchical nanosheets of NiCoP@FeNi LDH were prepared on nickel foam using a hydrothermal-phosphorization-electrodeposition process as non-noble metal electrocatalysts for hydrogen production at high current density (HCD). The NiCoP@FeNi LDH/NF showed overpotentials of only 195 and 230 mV for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, reaching 10 0 0 mA cm-2. For overall water splitting, only 1.70 V was required at 10 0 0 mA cm-2. This work provides valuable insight for industrial-scale hydrogen production at HCD.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Y. H. Zhou, S. F. Liu, D. Chen, Q. F. Wu, B. Xiao, F. He, Z. J. Wang, T. Yang, J. J. Kai
Summary: In this study, the irradiation behavior of two types of EHEAs (Fe42 and Fe47) with different phase designs was investigated using He ion irradiation. The results showed that the phase composition of the alloys remained relatively stable up to a certain level of irradiation, but the long-range order of the B2 phase in Fe42 alloy was disrupted to a greater extent. It was also found that the Fe47 alloy with an ordered B2 phase exhibited better radiation resistance, with smaller and fewer helium bubbles formed. This work provides a new strategy for designing EHEAs with excellent resistance to irradiation at elevated temperatures.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Chemistry, Physical
Zhenqi Tan, Chan Gao, Qicheng Wang, Xiaomei Wang, Tao Yang, Jingyuan Ge, Xinhui Zhou, Hongping Xiao, Yujian You
Summary: A luminescent 1D metal-organic framework [Co(apba)2(H2O)2] (1) was synthesized using Hapba as a ligand. Compound 1 exhibited excellent sensing properties, specifically recognizing strong acid-base and weak acid. It is the first MOF-based pH sensor capable of detecting both strong acid-base and weak acid, and it also has the highest sensitivity among all pH fluorescent sensors. Additionally, it can detect antibiotic moxifloxacin and polyphenol compound tannic acid with low detection limits.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Jianyang Zhang, Zhankun Zhao, Qian Li, Junhua Luan, Chain-Tsuan Liu, Yilu Zhao, Tao Yang
Summary: The unique bifunctionality of L12-structured nanoprecipitates in a FeCoNiAlTi high entropy alloy is unveiled, which allows for an increase in tensile strength and ductility. The introduction of dense coherent L12-type nanoprecipitates stabilizes the face-centered cubic matrix, promoting microbands-induced plasticity associated with stress-induced martensite transformation. This leads to significantly improved work hardening capability and excellent plastic deformation stability at a high-strength level.
ADVANCED POWDER MATERIALS
(2023)
