Article
Engineering, Mechanical
Xuelong Li, Shaojie Chen, Enyuan Wang, Zhonghui Li
Summary: This paper establishes an elastic-plastic-brittle mutation rockburst model for coal rock with structural surface, and researches the energy accumulation and dissipation mechanism during dynamic deformation and rupture to obtain the rockburst energy condition. Additionally, a volume element-region-system model of rockburst is established to explain the evolution process. The analysis of microseismic and electromagnetic radiation characteristics of coal rock provides a deeper understanding of the rockburst mechanism for accurate monitoring and early warning.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Thermodynamics
Shuai Chen, Wei Zhou, Yani Ding, Guangbo Zhao, Jihui Gao
Summary: Fe3+-mediated coal-assisted water electrolysis (CAWE) for hydrogen production is an effective way to utilize coal resources. The roles of mineral matter and oxygen-containing functional groups (OGs) in promoting the development of Fe3+-mediated CAWE of low-rank coal are investigated in this study. The influence of minerals and OGs on the hydrogen yields of demineralized coal and oxidized coal is analyzed, showing significant differences compared to raw coal. Furthermore, the changes in microstructural, surface structure, and microcrystalline of the coal after electrolysis are examined.
Article
Chemistry, Physical
Xin Li, Yali Feng, Haoran Li, Qian Zhang
Summary: This study prepared MgO nanoparticles using different magnesium sources and evaluated their antibacterial activity. The influence of anionic groups in solution on the physical properties and bacterial inhibition of nanomaterials during their formation was discussed. The study showed that the electronegativity of the anion affects the ionization degree, growth environment, and crystal morphology of MgO and Mg(OH)2 precursors. MgO(C) prepared with MgCl2·6H2O showed the best bactericidal performance, with over 98% activity against E. coli and S. aureus after 2 hours, likely due to the larger electronegativity of Cl-.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Xinpeng Guo, Yongquan Guo, Linhan Yin
Summary: The hardness and yield strength of RHEAs are enhanced with increasing linear density of covalence electron pair and the covalence electron number per atom, while the melting points of RHEAs increase with increasing covalence electron pair and the average of the covalence electron number per atom. The cohesive energies for RHEAs significantly depend upon the average covalence electron number per atom, indicating that the mechanical and thermal properties of RHEAs are modulated by their covalence electrons.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Energy & Fuels
Chunhua Zhang, Jiahui Shen, Ji Li, Mei Wan
Summary: By studying the inhibition mechanism of different chloride salts on the spontaneous combustion of coal, it was found that different chloride salts have different inhibitory effects at different stages, and magnesium chloride participates in the entire coal-oxygen reaction process.
Article
Energy & Fuels
Jingyu Zhao, Yueyan Xiao, Jiajia Song, Shiping Lu, Chi -Min Shu
Summary: The study aims to reveal the evolution of microstructures and coal spontaneous combustion mechanisms during natural oxidation. This information is beneficial to mine safety engineers and risk management professionals. It can lead to improved early warning detection and the development of CSC retardant materials.
Article
Chemistry, Multidisciplinary
Xin Li, Hao Li, Zhen Yang, Hongzhu Li, Hui Zuo, Xuejiao Wang, Hang Li
Summary: This research explores the relationship between electromagnetic radiation (EMR) evolution and the stress state during loading of composite coal-rock. By studying the coal-rock EMR generation mechanism and establishing a stress-EMR numerical model, the characteristics and evolution of EMR, as well as its relationship with the coal-rock state, were analyzed in depth. The findings will contribute to improving the basic theory of coal and rock dynamic disasters and support prediction with multi-information fusion, thereby reducing the adverse impact of coal mine disasters on people's lives and property.
Article
Thermodynamics
Kaikai Kou, Wei Zhou, Shuai Chen, Jihui Gao
Summary: The oxidation mechanism of carboxyl group in coal was systematically investigated by preparing a model compound of carboxylated graphene, providing essential guidance for the application of CAWE. Energies for hydrogen production and Fe2+ generation were significantly reduced in the process, demonstrating the potential for reducing electric energy consumption in H-2 production.
Article
Construction & Building Technology
Yanbing Zhao, Caiqian Yang, Kefeng Li, Feng Qu, Chengyu Yan, Zhiren Wu
Summary: The experimental investigation on the feasibility of coal gangue as a primary cementitious material showed that its hydration reactivity can be significantly enhanced with the proper activation strategy. The formation of high contents of amorphous SiO2 and Al2O3 phases are critical factors for high reactivity. This study suggests that coal gangue can be viewed as a new eco-friendly cementitious material through the proposed composite activation strategy.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Energy & Fuels
Lulu Sun, Xinwei Lv, Ning Liu, Guansheng Qi, Qiming Huang
Summary: This study investigates the prevention mechanisms of spontaneous coal combustion using thermosensitive composite hydrogels. The results show that the hydrogel undergoes a phase transformation at temperatures above 58 degrees C, providing optimal cooling and suffocation effects to prevent coal combustion. The hydrogel also effectively prevents contact between coal and oxygen, and generates a dehydrating agent and inert gas to inhibit spontaneous combustion. These findings provide guidance for the practical application and development of thermosensitive composite hydrogel materials.
Article
Energy & Fuels
Huifang Feng, Jingli Sun, Hui Jin, Jiajing Kou, Liejin Guo
Summary: The study found that adding phenol can increase coal gasification efficiency and inhibit char formation, leading to an increased hydrogen yield. Phenol effectively suppresses char formation and enhances char reactivity.
Article
Multidisciplinary Sciences
Yang Liu, Jian-Hua Wang, Cai-Ping Lu, Chao Wang, Hua-Dong Xie, Xian-Yang Yan
Summary: This study investigated the slip and instability mechanisms of coal-rock parting-coal structures under uniaxial loading conditions using experiments and case verification. The findings are relevant for the early warning of coal-rock dynamic disasters in coal mines.
SCIENTIFIC REPORTS
(2022)
Article
Energy & Fuels
Zhang Yuanbo, Zhang Yutao, Li Yaqing, Shi Xueqiang, Xia Shangwen, Guo Qiang
Summary: The study explores the relationship between micro-group variations and thermal effects during coal spontaneous combustion (CSC). Different stages of exothermic reactions were identified, with key groups following a sequence of hydroxyl -> aliphatic hydrocarbons -> oxygen-containing functional groups -> aromatic hydrocarbons. The contribution of microstructures to thermal effects varies in different stages of CSC, with the oxidation of key groups playing a crucial role in preventing CSC.
Article
Materials Science, Multidisciplinary
Hongren Shen, Hao He, Jianpeng Zou, Yimin Li, Junming Li
Summary: Gas-atomized 316L stainless steel powders were oxidized to obtain high oxygen content, which hindered atomic diffusion by obstructing the diffusion channels with oxide particles rich in Si and Mn. The diffusion and densification rates decreased with higher oxygen content. The activation energy caused by a unit concentration of oxygen was much lower than the bonding energy of M-O, indicating that volume diffusion in the later stage of sintering tended to bypass oxide particles rather than breaking chemical bonds of M-O.
Article
Chemistry, Physical
Sarita Kolay, Subarna Maity, Sikta Chakraborty, Srijon Ghosh, Amitava Patra
Summary: This work investigates the impact of substituent groups on the relaxation dynamics of atomically precise Ag44(SR)304- nanoclusters. The electronegativity and polarization of the surface ligands are found to control the electron-phonon interaction, affecting the population transfer within the nanoclusters upon photoexcitation. Transient absorption spectroscopic data analysis reveals a slower relaxation process from the core state to the surface state, depending on the electronegativity. The ligand-protected Ag44 nanoclusters exhibit fast internal conversion, core-to-surface relaxation, and slower electron-hole recombination.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Multidisciplinary
Menghan Wei, Dazhao Song, Xueqiu He, Majid Khan, Zhenlei Li, Liming Qiu, Quan Lou
Summary: This study explored the low-frequency electromagnetic field excited by cracks in rocks and designed an electromagnetic antenna capable of simultaneously measuring in three axes. Signals from the same crack differ in directions at the same position, demonstrating directionality. The research outcomes provide a practical basis for characterizing electromagnetic radiations associated with rock fractures.
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
Acoustics
Hongwei Mu, Yongsheng Bao, Dazhao Song, Dongfang Su
Summary: The study analyzed the characteristics of different types of overlying coal pillars in close-distance multiseam coal pillar mining and established a theoretical model for strong strata behaviors. The main factors affecting the strong strata behaviors were identified as static stress concentration and dynamic disturbances caused by mining activities. Monitoring data validated the theoretical model and provided insights for stress distribution calculation and identifying danger zones in similar conditions.
SHOCK AND VIBRATION
(2021)
Review
Materials Science, Multidisciplinary
Xue-qiu He, Chao Zhou, Da-zhao Song, Zhen-lei Li, An-ye Cao, Shen-quan He, Majid Khan
Summary: The study highlights significant progress in the prevention and control of rockburst, but also identifies challenges with increasing mining depth. Improved monitoring and warning standards are needed, particularly in relation to complex induction factors and unclear mechanisms. Further research is recommended to explore the trend of rockburst and develop high-reliability sensing technology and equipment for future development.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Engineering, Geological
Shengquan He, Dazhao Song, Hani Mitri, Xueqiu He, Jianqiang Chen, Zhenlei Li, Yarong Xue, Tuo Chen
Summary: This paper presents an integrated early rockburst warning model for underground mines, utilizing fuzzy comprehensive evaluation method and maximum membership degree principle to improve prediction accuracy. The model was successfully demonstrated in a coal mine in China.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Construction & Building Technology
Shan Yin, Dazhao Song, Xueqiu He, Liming Qiu, Zhenlei Li, Quan Lou, Jie Li, Yang Liu
Summary: The study established an experimental system to monitor the magnetic field changes in concrete damage and analyzed the relationship between magnetic induction intensity and load, acoustic emission. The results show that magnetic field can reflect the deformation and failure state of concrete, with high correlation between magnetic induction intensity and AE, providing a new nondestructive method for monitoring concrete damage.
STRUCTURAL CONTROL & HEALTH MONITORING
(2021)
Article
Engineering, Multidisciplinary
Shan Yin, Dazhao Song, Jie Li, Xueqiu He, Liming Qiu, Quan Lou, Menghan Wei, Yang Liu
Summary: The HHT method is used to analyze and process the EMR waveform of coal failure process, effectively extracting the refined features of EMR waveform signal and improving the identification degree of the precursor characteristics of coal body instability. HHT method has an improved adaptability and superiority in revealing the characteristics of coal deformation and failure.
Article
Acoustics
Hongwei Mu, Dazhao Song, Shan Yin, Xueqiu He, Liming Qiu, Dongfang Su, Yang Liu
Summary: The study revealed that with the increase of joint angle, the failure mode of coal samples changes from tension cracks dominated stage fracture to rapid fracture with the coexistence of shear and tension cracks, and finally to burst fracture producing a large number of fragments. The time-frequency characteristics of electromagnetic radiation signals also show different patterns with the increase of joint angle.
SHOCK AND VIBRATION
(2021)
Article
Construction & Building Technology
Shan Yin, Dazhao Song, Xueqiu He, Quan Lou, Liming Qiu, Zhenlei Li, Chen Peng, Jie Li, Yang Liu
Summary: This study investigates the relationship between stress drop and acoustic-electrical energy during rock failure processes, finding that with the increase in stress drop dissipated energy, the released acoustic-electric energy gradually increases with a good linear positive correlation. A new indicator for monitoring rock structure health based on stress drop energy is established, allowing for the assessment of rock structure's health status.
STRUCTURAL CONTROL & HEALTH MONITORING
(2022)
Article
Energy & Fuels
Xianghui Tian, Dazhao Song, Xueqiu He, Zhenlei Li, Huifang Liu, Weixiang Wang
Summary: This study investigated the micro-surface adhesion of outburst-prone and non-prone coal using an AFM, finding that the adhesion of outburst-prone coal is significantly higher than non-prone coal, with a positive linear correlation between adhesion and action distance. The study also proposed a concept of critical velocity V-cr for gas adsorption and divided coal and gas outburst into four stages, suggesting a micro chain reaction mechanism.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Geochemistry & Geophysics
Honglei Wang, Zhenlei Li, Dazhao Song, Xueqiu He, Aleksei Sobolev, Majid Khan
Summary: This study developed an intelligent rockburst risk prediction model using the scorecard methodology, which has high accuracy and interpretability. The results show that the model has a high accuracy, low false alarm rate, and low missed alarm rate in predicting rockburst in riverside hydropower stations, but increasing hazard sample category weights can lead to a higher false alarm rate.
Article
Geochemistry & Geophysics
Liming Qiu, Yi Zhu, Dazhao Song, Xueqiu He, Weixiang Wang, Yang Liu, Yuzhe Xiao, Menghan Wei, Shan Yin, Qiang Liu
Summary: Coal and rock dynamic disasters pose a serious threat to miner safety and industrial production. The refined nonlinear characteristics of electromagnetic radiation (EMR) and acoustic emission (AE) during coal splitting failure were studied using Hilbert-H and multifractal theory, revealing valuable information about coal fracture law. The research showed that EMR and AE during coal splitting failure are related to the process of coal crack propagation, with similar initiation time and frequency band. However, EMR has a longer signal duration and lower frequency compared to AE. The research provides an effective method for studying the nonlinear refinement characteristics of coal EMR and AE.
Article
Mining & Mineral Processing
Xianghui Tian, Xueqiu He, Dazhao Song, Zhenlei Li, Majid Khan, Huifang Liu, Liming Qiu
Summary: This study characterizes the micro-surface morphology, modulus, adhesion, and potential of granite, shale, and limestone using an atomic force microscope. The results show that the micro-surface characteristics of the rocks vary, and these characteristics have important effects on gas adsorption and fracture formation.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Yujie Peng, Dazhao Song, Liming Qiu, Honglei Wang, Xueqiu He, Qiang Liu
Summary: This paper proposes a new dynamic combined prediction method for gas concentration based on multivariate monitoring data analysis. The method utilizes Spearman's rank correlation coefficient for dynamic optimization of prediction indicators and combines time series and spatial topology features with Bi-LSTMs. The results show that the proposed model is more accurate compared to other models, reduces missing alarms for abnormal gas emissions, and improves early warning accuracy, thus enhancing safety production efficiency in coal mines.
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)