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Dual-crosslinked and dual-networked hydrogels with high mechanical properties for cost-effective solar water desalination and purification

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Frontiers of materials science 2024年第4期18卷 43-58页

作者： Shukun Guo Wenxin Wang Ruizhi Wang Yang Chen Ning Wang Martin Jensen Xianfeng Li State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Municipal Key Lab of Advanced Energy Storage Material and DevicesSchool of Material Science and EngineeringTiangong UniversityTianjin 300387China Department of Chemistry and Bioscience Aalborg UniversityDK-9220 AalborgDenmark Shandong Dongyue Future Hydrogen Energy Materials Co. Ltd.Zibo 256401China

High solar evaporation efficiency combined with enhanced desalination and antifouling performance is key in the application of the solar-driven interfacial water evaporation(SIWE)*** this study,we have designed a dual-crosslinked and dual-networked hydrogel(CSH)for interfacial solar vapor generation(ISVG).Through adjusting the proportions of matrix components and balancing the degree of crosslinking between cellulose and epichlorohydrin,it is feasible to obtain the hybrid hydrogel with elastic *** resulted hydrogel has a porous structure enabling the transport of water molecules,while the doped component of iron-based metal-organic frameworks provides this hydrogel with strong light absorbance,achieving an evaporation rate of 2.52 kg·m^(−2)·h^(−1)under 1 kW·m^(−2)solar irradiation and an evaporation efficiency of 89.32%.The porosity also creates salt resistance through capillary *** applications of such CSH hydrogels in the field of seawater desalination and wastewater purification are conducted under outdoor light conditions,and the concentrations of metal ions are revealed to be reduced by orders of magnitude below the WHO threshold ones,while pigments are found to be absent from the condensate contained in the treated wastewater.

关键词： double crosslinking hydrogel solar-driven evaporation desalination

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Radiative cooling for passive thermal management towards sustainable carbon neutrality

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National science Review 2023年第1期10卷 87-97页

作者： Jun Liang Jiawei Wu Jun Guo Huagen Li Xianjun Zhou Sheng Liang Cheng-Wei Qiu Guangming Tao Wuhan National Laboratory for Optoelectronics and Optics Valley Laboratory Huazhong University of Science and Technology Department of Electrical and Computer Engineering National University of Singapore MOE Key Laboratory of Thermo-Fluid Science and Engineering School of Energy and Power Engineering Xi'an Jiaotong University Key Laboratory of Education Ministry on Luminescence and Optical Information Technology National Physical Experiment Teaching Demonstration CenterDepartment of PhysicsSchool of Physical Science and Engineering Beijing Jiaotong University State Key Laboratory of Material Processing and Die &Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology

Photonic structures at the wavelength scale offer innovative energy solutions for a wide range of applications,from high-efficiency photovoltaics to passive cooling,thus reshaping the global energy *** cooling based on structural and material design presents new opportunities for sustainable carbon neutrality as a zero-energy,ecologically friendly cooling *** this review,in addition to introducing the fundamentals of the basic theory of radiative cooling technology,typical radiative cooling materials alongside their cooling effects over recent years are summarized and the current research status of radiative cooling materials is outlined and ***,technical challenges and potential advancements for radiative cooling are forecast with an outline of future application scenarios and development *** the future,radiative cooling is expected to make a significant contribution to global energy saving and emission reduction.

关键词： photonic structures radiative cooling energy saving and emission reduction carbon neutrality

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Change of Electrical and Transport Properties of Nickel Oxide by Carrier Concentration and Temperature through First‑Principle Calculations

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Nanomanufacturing and Metrology 2023年第4期6卷 109-118页

作者： Nayem Md.Reza Shah Chang‑Dong Yeo Minyeong Choi Yang‑Ki Hong Jeong H.You Department of Mechanical Engineering Texas Tech UniversityLubbockTX 79409USA Department of Electrical and Computer Engineering and Material Science Ph.D.Program The University of AlabamaTuscaloosaAL 35487USA Department of Mechanical Engineering School of EngineeringUniversity of St.ThomasSt.PaulMN 55105USA

Nickel is typically used as one of the main components in electrical contact devices or *** oxide(NiO)is usually formed on the surfaces of electrodes and can negatively impact system performance by introducing electrical contact *** thermal,electrical,and transport properties of NiO,as a Mott insulator or a p-type semiconductor,can be altered by operating and environmental conditions such as temperature and stress/strain by *** this study,we inves-tigate the fundamental material properties of NiO through the first-principle ***,we obtain and compare the lattice parameter,magnetic moment,and electronic structure for NiO via the WIEN2K simulations with four different poten-tials(i.e.,GGA,GGA+U,LSDA,and LSDA+U).Then,using the WIEN2K simulation results with LSDA+U potential that produces a highly accurate bandgap for NiO,we calculate the electrical conductivity and electrical part of the thermal conductivity of nickel and NiO as a function of temperature and carrier concentration through the BoltzTraP *** simulation results revealed that the electrical conductivity relative to the relaxation time for NiO increases with the carrier concentration,while it shows a slightly decreasing trend with temperature under a fixed carrier *** contrast,the electrical part of the thermal conductivity shows an increasing trend considering carrier concentration and temperature.

关键词： Nickel oxide Magnetic moments Density of states Seebeck coefcient Electrical conductivity

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A nonradiographic strategy to real-time monitor the position of three-dimensional-printed medical orthopedic implants by embedding superparamagnetic Fe_(3)O_(4) particles

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Interdisciplinary materials 2024年第1期3卷 133-149页

作者： Yike Li Peng Chen Zhenhua Wu Congcan Shi Peng Chen Yizhuo Xu Xiaojun Chen Manhui Chen Yuxin Li Chunze Yan Yunsong Shi Bin Su State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanPeople's Republic of China School of Materials Science and Engineering Wuhan University of TechnologyWuhanPeople's Republic of China Department of Orthopaedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanPeople'sRepublic of China

Monitoring the position of orthopedic implants in vivo is paramount for enhancing postoperative *** radiographic methods,although effective,pose inconveniences to patients in terms of specialized equipment requirements and delays in rehabilitation ***,a nonradiographic design concept for real-time and precisely monitoring the position of in vivo orthopedic implants is *** monitoring system encompasses an external magnetic field,a three-dimensional(3D)-printed superparamagnetic intervertebral body fusion cage(SIBFC),and a *** SIBFC with a polyetheretherketone framework and a superparamagnetic Fe_(3)O_(4) component was integrally fabricated by the high-temperature selective laser sintering *** to the superparamagnetic component,the minor migration of SIBFC within the spine would cause the distribution change of the magnetic induction intensities,which can be monitored in real-time by the magnetometer no matter in the static states or dynamic bending *** horizontal migration,occurrences of intervertebral subsidence in the vertical plane of the vertebrae can also be effectively distinguished based on the obtained characteristic variations of magnetic induction *** strategy exemplifies the potential of superparamagnetic Fe_(3)O_(4) particles in equipping 3D-printed orthopedic implants with wireless monitoring capabilities,holding promise for aiding patients'rehabilitation.

关键词： 3D printing implanted medical devices orthopedic rehabilitation position monitoring superparamagnetic

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AKI Risk Prediction Model Based on Federated Learning in Medical Big Data 2

AKI Risk Prediction Model Based on Federated Learning in Med...

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2nd International Conference on Biomedical and Intelligent Systems, IC-BIS 2023

作者： Wang, Junsong Guo, Shenwen Department of Biomedical Engineering School of Material Science and Engineering South China University of Technology Guangdong Guangzhou510640 China Department of Intelligent Science and Engineering School of Automation Science and Engineering Guangdong Guangzhou510640 China

ISBN: (纸本)9781510666733

Acute kidney injury (AKI) is a common critical syndrome with a high incidence rate and high mortality. The risk assessment and prediction of patients with AKI are of great significance for the timely intervention and treatment of patients with potential risks. Based on the large scale of clinical information of multi-center inpatients (46, 395 AKI inpatients vs. 534, 066 non-AKI inpatients), the distributed federal learning framework was applied to construct the AKI prediction models. Experimental results demonstrated that the proposed method achieved promising performance in AKI risk identification and prediction. © 2023 SPIE.

关键词： Risk assessment

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Sustainable production of bio-based epoxy resins using the phenolics produced via atmospheric ex-situ catalytic hydropyrolysis of biomass

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Journal of Industrial and engineering Chemistry 2025年 148卷 492-501页

作者： Yang, Hanmin Shafaghat, Hoda Öman, Tommy Johansson, Ann-Christine KTH Royal Institute of Technology Department of Material Science and Engineering Brinellvägen 23 StockholmSE-114 28 Sweden RISE AB Division of Bioeconomy Biorefinery and Energy Box 726 PiteåSE-941 28 Sweden RISE AB Division Material and Production Polymer Fiber and Composite Box 271 ÖjebynSE-943 33 Sweden

Replacement of fossil-based chemicals with their bio-based analogues is vital to reduce the fossil dependence and greenhouse gas emissions. Accordingly, production of bio-based epoxy resin is important for a sustainable development. The aim of this study was to introduce a potential technique for producing phenolic compounds from biomass followed by a synthesis of bio-based epoxy resin. Hence, atmospheric ex-situ catalytic hydropyrolysis of wood sawdust was performed using a Molybdenum on Aluminum oxide (Mo/Al2O3) catalyst in a continuous drop-tube pyrolyzer for a selective production of phenolic compounds. The phenolics were purified and concentrated by liquid–liquid extraction and used to synthesize bio-based epoxy resin. The results revealed that a mild catalytic hydrotreatment of the pyrolysis vapor using Mo/Al2O3 at 673 K improved the phenolics yield. The organic pyrolysis oil contained up to 41 wt% phenolics whereof 20 wt% were volatile. The properties of the synthesized bio-based diglycidyl ether of bisphenol A epoxy resin (pyroEP) was comparable to those of commercial epoxy resin. The glass transition temperature of 426 K and reaction energy of 324 kJ/kg confirmed the successful production of a high-performance, sustainable epoxy resin. © 2025 The Authors

关键词： Pyrolysis

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Crystal plasticity finite element simulations on extruded Mg-10Gd rod with texture gradient

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Journal of Magnesium and Alloys 2024年第8期12卷 3409-3430页

作者： Jaeseong Lee Dirk Steglich Youngung Jeong Department of Materials Convergence and System Engineering Changwon National University25 Changwondaehak-roChangwonRepublic of Korea Helmholtz-Zentrum Hereon Institute of Material Systems ModelingD-21502 GeesthachtGermany School of Materials Science and Engineering Changwon National University25 Changwondaehak-roChangwonRepublic of Korea

The mechanical properties of an extruded Mg-10Gd sample, specifically designed for vascular stents, are crucial for predicting its behavior under service conditions. Achieving homogeneous stresses in the hoop direction, essential for characterizing vascular stents, poses challenges in experimental testing based on standard specimens featuring a reduced cross section. This study utilizes an elasto-visco-plastic self-consistent polycrystal model(ΔEVPSC) with the predominant twinning reorientation(PTR) scheme as a numerical tool, offering an alternative to mechanical testing. For verification, various mechanical experiments, such as uniaxial tension, compression, notched-bar tension, three-point bending, and C-ring compression tests, were conducted. The resulting force vs. displacement curves and textures were then compared with those based on the ΔEVPSC model. The computational model's significance is highlighted by simulation results demonstrating that the differential hardening along with a weak strength differential effect observed in the Mg-10Gd sample is a result of the interplay between micromechanical deformation mechanisms and deformation-induced texture evolution. Furthermore, the study highlights that incorporating the axisymmetric texture from the as-received material incorporating the measured texture gradient significantly improves predictive accuracy on the strength in the hoop direction. Ultimately, the findings suggest that the ΔEVPSC model can effectively predict the mechanical behavior resulting from loading scenarios that are impossible to realize experimentally, emphasizing its valuable contribution as a digital twin.

关键词： Crystal plasticity Texture Finite element C-ring Three-point bending

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Phase control and stabilization of 1T-MoS_(2) via black TiO_(2-x)nanotube arrays supporting for electrocatalytic hydrogen evolution

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Journal of Energy Chemistry 2022年第5期31卷 71-77页

作者： Ting Zhang Tingxuan Yang Guoxing Qu Saifang Huang Peng Cao Wei Gao Department of Chemical and Materials Engineering the University of AucklandPrivate Bag 92019Auckland 1142New Zealand School of Material Science and Engineering Nanchang UniversityNanchang 330031JiangxiChina School of Materials Science and Engineering Jiangsu University of Science and TechnologyJiangsu 212003ZhenjiangChina

1T phase MoS_(2)(1T-MoS_(2)) is a promising substitute of platinum electrocatalyst for hydrogen evolution reaction(HER)due to its high intrinsic activity but suffering from thermodynamical *** great efforts have been made to synthesize 1T-MoS_(2) and enhance its stability,it remains a big challenge to realize the phase control and stabilization of 1T-MoS_(2).Herein,based on crystal field theory analysis,we propose a new solution by designing an electrocatalyst of 1T-MoS_(2) nanosheets anchoring on black TiO2-xnanotube arrays in-situ grown on Ti plate(1T-MoS_(2)/TiO_(2-x)@Ti).The black TiO_(2-x)substrate is expected to play as electron donors to increase the charge in Mo 4 d orbits of 1T-MoS_(2) and thus weaken the asymmetric occupation of electrons in the Mo 4 d *** results demonstrate that black TiO_(2-x)nanotubes shift electrons to MoS_(2) and induce MoS_(2) to generate more 1 T phase due to stabilizing the 1T-MoS_(2) nanosheets compared with a Ti *** 1T-MoS_(2/)TiO_(2-x)@Ti shows much improved HER performance with a small Tafel slope of 42 m V dec^(-1) and excellent catalytic stability with negligible degradation for 24 *** calculations confirm that the black TiO_(2-x)substrate can effectively stabilize metastable 1T-MoS_(2) due to electrons transferring from black TiO_(2-x)to Mo 4 d *** work sheds light on the instability of 1T-MoS_(2) and provides an essential method to stabilize and efficiently utilize 1T-MoS_(2) for HER.

关键词： 1T-MoS_(2) Black TiO_(2-x)nanotube Hydrogen evolution reaction Phase control Electrocatalyst

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Strengthening behavior of AlCoCrFeNi(TiN)_(x) high-entropy alloy coatings fabricated by plasma spraying and laser remelting

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Journal of materials science & Technology 2022年第26期121卷 163-173页

作者： Bingqian Jin Nannan Zhang Shuo Yin Department of Material Science and Engineering Shenyang University of TechnologyShenyang 110870China Department of Mechanical Manufacturing and Biomedical EngineeringTrinity College DublinThe University of DublinParsons BuildingDublin 2Ireland

High-entropy alloy(HEA)coatings are of great importance in the fabrication of wear resistance *** coatings containing ceramic particles as reinforcement phase usually have better wear *** this study,AlCoCrFe Ni(TiN)_(x)(x:molar ratio;x=0,0.2,0.4,0.6,0.8,1.0)HEA coatings were fabricated on Q235 steel by plasma spray first and then subjected to laser *** experimental results confirm that plasma spray together with post laser remelting could result in the in-situ formation of TiN-Al_(2)O_(3) ceramic particles and cuboidal B2 phase in the AlCoCrFeNi(TiN)_(x) HEA *** in-situ TiN-Al_(2)O_(3) and nano-cuboidal B2 precipitation phase strengthened the coatings and improved their wearresistance *** to the dispersion of hard phase and nano-particles resulting from second heating,the microhardness of the Al Co Cr Fe Ni(Ti N)coatings significantly increased from 493 to 851 HV after laser *** the same reasons,the wear-resistance performance was also significantly promoted after laser remelting.

关键词： High-entropy alloy Coatings Ceramics Laser remelting Microstructure Wear resistance

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Self-Assembled MXene Supported on Carbonization-Free Wood for a Symmetrical All-Wood Eco-Supercapacitor

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ACS Applied materials and Interfaces 2024年第28期16卷 36322-36332页

作者： Yu, Yuan Chen, Wei-Hsin Wang, Xin Sun, Xiaohan Jiang, Zishuai Li, Meichen Fu, Xinmiao Yang, Haiyue Li, Menggang Wang, Chengyu Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin150040 China Department of Aeronautics and Astronautics National Cheng Kung University Tainan701 Taiwan School of Materials Science and Engineering Peking University Beijing100871 China

As an emerging two-dimensional (2D) material, MXene has garnered significant interest in advanced energy storage systems, yet the stackable structure, poor mechanical stability, and lack of moldability limit its large-scale applications. To address this challenge, herein, the self-assembly of MXene on carbonization-free wood was obtained to serve as high-performance electrodes for symmetrical all-wood eco-supercapacitors by a steam-driven self-assembly method. This method can be implemented in a low-temperature environment, significantly simplifying traditional high-temperature annealing processes and generating minimal impact on the environment, human health, and resource consumption. The environmentally friendly steam-driven self-assembly strategy can be further extended into various wood-based electrodes, regardless of the types and structures of wood. As a typical platform electrode, the optimized MXene@delignified balsa wood (MDBW) achieves high areal capacitance and specific capacitance values of 2.99 F cm-2 and 580.55 F g-1 at an extensive mass loading of 5.16 mg cm-2, respectively, with almost loss-free capacitance after 10,000 cycles at 50 mA cm-2. In addition, an all-solid-state symmetrical all-wood eco-supercapacitor was further assembled based on MDBW-20 as both positive and negative electrodes to achieve a high energy density of 19.22 μWh cm-2 at a power density of 0.58 mW cm-2. This work provides an effective strategy to optimize wood-based electrodes for the practical application of biomass eco-supercapacitors. © 2024 American Chemical Society.

关键词： Capacitance

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