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Vastly synergistic Fe_(2)CuNis_(4)-Nanoarchitectures Anchored 2D-Nano-sandwich Derived from Flower-Like-CuFes_(2)/N-Graphene and Cube-Like-NiFes_(2)/N-CNTs for Water Oxidation and Nitrophenol Reduction

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Energy & Environmental Materials 2024年第6期7卷 274-289页

作者： Gopiraman Mayakrishnan Ramkumar Vanaraj Junpeng Xiong Muhammad Farooq Azeem Ullah keqin Zhang seong Cheol kim Ick soo kim Nano Fusion Technology Research Group Division of Molecules and PolymersInstitute for Fiber Engineering(IFES)Interdisciplinary Cluster for Cutting Edge Research(ICCER)Shinshu UniversityTokida 3-15-1UedaNagano 386-8567Japan school of Chemical Engineering Yeungnam UniversityGyeongsan 38541Korea Graduate school of Medicine Scienceand TechnologyShinshu UniversityTokida 3-15-1UedaNagano 386-8567Japan National Engineering Laboratory for Modern silk College of Textile and Clothing EngineeringSoochow UniversitySuzhou 215123China

surface area,pore properties,synergistic behavior,homogenous dispersion,and interactions between carbon matrix and metal-nanostructures are the key factors for achieving the better performance of carbon-metal based(electro)***,the traditional hydro-or solvothermal preparation of(electro)catalysts,particularly,bi-or tri-metallic nanostructures anchored graphene(G)or carbon nanotubes(CNTs),often pose to poor metal–support interaction,low synergism,and patchy *** first,bimetallic flower-like-CuFes_(2)/NG and cube-like-NiFes_(2)/NCNTs nanocomposites were prepared by solvothermal *** resultant bimetallic nanocomposites were employed to derive the 2D-nano-sandwiched Fe_(2)CuNis_(4)/NGCNTs-sW(electro)catalyst by a very simple and green urea-mediated“mix-heat”*** desired physicochemical properties of Fe_(2)CuNis_(4)/NGCNTs-sW such as multiple active sites,strong metal-support interaction,homogenous dispersion and enhanced surface area were confirmed by various microscopic and spectroscopic *** the best of our knowledge,this is the first urea-mediated“mix-heat”method for preparing 2D-nano-sandwiched carbon-metal-based(electro)*** Fe_(2)CuNis_(4)/NGCNTs-sW was found to be highly effective for alkaline-mediated oxygen evolution reaction at low onset potential of 284.24 mV,and the stable current density of 10 mA cm^(−2) in 1.0 m kOH for 10 ***,the Fe_(2)CuNis_(4)/NGCNTs-sW demonstrated excellent catalytic activity in the reduction of 4-nitrophenol with good kapp value of 87.71×10^(−2)s^(-1)and excellent reusability over five ***,the developed urea-mediated“mix-heat”method is highly efficient for the preparation of metal-nanoarchitectures anchored 2D-nano-sandwiched(electro)catalysts with high synergism,uniform dispersion and excellent metal-support interaction.

关键词： (electro)catalyst metal-sulfide nanoarchitectures mix-heat N-graphene/NCNTs synergistic effect urea

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Opportunities and challenges in cathode development for non-lithium-ion batteries

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escience 2024年第4期4卷 1-6页

作者： Haegyeom kim Jae Chul kim Materials sciences Division Lawrence Berkeley National Laboratory94720CAUSA Department of Chemical Engineering and Materials science Stevens Institute of Technology07030NJUSA

Lithium(Li)-ion batteries have stimulated the societal transformation to clean energy *** carry-on electricity is revolutionizing how society communicates,functions,and evolves efficiently by enabling mobile electronics,zero-emission electric vehicles,and stationary energy *** preparation for the sustainable energy future,however,there are growing concerns about depleting critical elements used in the Li technology(e.g.,lithium,cobalt,and nickel),especially for large-scale applications that will accelerate the rate of elemental *** non-Li-based rechargeable batteries composed of earth-abundant elements,such as sodium,potassium,magnesium,and calcium,have been proposed and explored as alternative systems to promote sustainable development of energy *** this perspective,we discuss challenges in Li-ion batteries in the sustainability aspect and provide our opinions on the potential applications of non-Li-based *** also highlight the current status,important progress,and remaining challenges of the Li-alternative technologies.

关键词： Batteries sodium Potassium Lithium Multi-valent Energy storage

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solar Driven 15.7% Hydrogen Conversion by Harmony of Light Harvesting,Electron Transporting Bridge,and s-Defection in a self-Assembled Microscale Cus/rGO/CP Photoanode

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Energy & Environmental Materials 2024年第3期7卷 190-201页

作者： sujeong kim Boseok seo Hyerim Park Younghwan Im Jeong Yeon Do Byung sub kwak Namgyu son Minkyu kim Misook kang Department of Chemistry College of Natural SciencesYeungnam UniversityGyeongsan Gyeongbuk 38541Korea school of Chemical Engineering Yeungnam UniversityGyeongsan Gyeongbuk 38541Korea Department of Energy and Hydrocarbon Chemistry Graduate School of EngineeringKyoto UniversityKyoto 615-8510Japan korea Evaluation Institute of Industrial Technology(keit) Cheomdan-Ro 8-GilDong-GuDaegu 41069Korea korea Electric Power Research Institute(kEPRI)105 Munji-ro Yooseong-guDaejeon 34056Korea

Cus is an encouraging photoelectrode candidate that meets the essential requirements for efficient solar-to-hydrogen production,but it has not been thoroughly studied.A Cus light absorber layer is grown by the self-assembly of copper and sulfur precursors on a carbon paper(CP)***,rGO is introduced as a buffer layer to control the optical and electrical properties of the *** well-ordered microstructural arrangement suppresses the recombination loss of electrons and holes owing to enhanced charge-carrier generation,separation,and *** potential reaching 10 mA cm^(-2)in 1.0 M kOH solution is significantly lowered to 0.87 V,and the photocurrent density at 1.23 V is 94.7 mA cm^(-2).The computational result reveals that the potential-determining step is sensitive to O^(*)stability;the lower stability of O^(*)in the thin layer of Cus/rGO decreases the free-energy gap between the initial and final states of the potential-determining step,resulting in a lowering of the onset *** faradaic efficiency for the photoelectrochemical oxygen evolution reaction in the optimized 2Cus/1rGO/CP photoanode is 98.60%,and the applied bias photon-to-current and the solar-to-hydrogen efficiencies are 11.2%and 15.7%,respectively,and its ultra-high performance is maintained for 250 *** record-breaking achievement indices may be a trigger for establishing a green hydrogen economy.

关键词： 15.7%-solar to hydrogen density functional theory lower photopotential p-Cus/rGO/CP photoanode photoelectrochemical oxygen evolution

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Jun12682,a potent sARs-CoV-2 papain-like protease inhibitor with exceptional antiviral efficacy in mice

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Acta Pharmaceutica sinica B 2024年第9期14卷 4189-4192页

作者： Mianling Yang Meehyein kim Peng Zhan Department of Medicinal Chemistry Key Laboratory of Chemical Biology(Ministry of Education)School of Pharmaceutical SciencesShandong UniversityJi’nan 250012China Infectious Diseases Therapeutic Research Center Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Republic of Korea

Recently,a collaborative research study published in science,led by Jun Wang,Xufang Deng,Eddy Arnold,and Francesc Xavier Ruiz1,identified a series of potent small molecule inhibitors that specifically target sARs-CoV-2 papain-like protease(PLpro).The study demonstrated nanomolar PLpro inhibitory potency with ki values ranging from 13.2 to 88.2 nmol/*** employing a structure-based drug design strategy,the researchers discovered an exceptionally promising compound,named Jun12682,that effectively targets both the newly discovered ubiquitin Val70(Val70Ub)-binding site and the known blocking loop(BL2)groove near the s4 subsite of ***,studies on the mechanism of action revealed that Jun12682 inhibits the deubiquitinating and deIsGylating activities of PLpro,which are crucial for antagonizing the host’s innate immune response upon viral *** biology studies confirmed the“two-pronged”binding mode of Jun12682,aligning perfectly with their drug design ***,Jun12682 exhibited potent antiviral activity against sARs-CoV-2 and its variants,including nirmatrelvir-resistant mutants,in Caco-2 cells(EC50:0.44e2.02 mmol/L).It is noteworthy that its oral administration significantly improved survival rates and alleviated both lung virus loads and histopathological lesions in a lethal sARs-CoV-2 mouse *** conclusion。

关键词： sARs-CoV-2 Papain-like protease Broad-spectrum Anti-drug resistance Drug candidate

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Erythrocytes serve as a template to create nanozymes with uniform Fe single-atom sites for healing bacteria-infected wound

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science China(Life sciences) 2024年第9期67卷 2048-2050页

作者： Thinh Viet Dang Moon Il kim Department of BioNano Technology Gachon UniversitySeongnam 13120Republic of Korea

Bacterial infection is recognized as one of the biggest global health threats,causing millions of people's death every year(Wang et al.,2020).Traditional antibiotics-based therapies have been widely utilized to control this issue(kohanski et al.,2010);however,their excessive use leads to the emergence of antibioticresistant bacteria,endangering to human health(Levy and Marshall,2004).

关键词： template healing utilized

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Emission wavelength selection via anomalous polarized fluorescence in ZnO-C nanowires

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Nano Research 2024年第5期17卷 4489-4497页

作者： Joon kiat kang kim Yong Lim Chorng Haur sow Department of Physics National University of SingaporeSingapore 117542Singapore

Defect fluorescence from high aspect ratio semiconductor nanowires typically displays a weak polarization parallel to the nanowire’s long axis due to dielectric mismatch in high aspect ratio ***,anomalous 2.2 eV defect fluorescence distinctly polarized perpendicular to the nanowire is observed and measured from carbon-incorporated zinc oxide *** observations are significant because polarized defect emissions with consistent polarization on a mesoscopic scale are *** a systematic study and comparison of experimental results with density functional theory calculations,an oriented defect complex comprising carbon substituting on an oxygen site and an oxygen vacancy(CO-VO)is deduced to be responsible for the anomalous yellow fluorescence,demonstrating a method for relating atomic-scale defect geometry to mesoscopic *** anomalous emission can appear in both green-and red-fluorescing nanowires grown with different carbon concentrations,verifying the independence and uniqueness of the 2.2 eV *** allows for polarization-dependent emission wavelength selection from a single nanowire.

关键词： anomalous polarization defects fluorescence zinc oxide carbon

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Modeling asymmetric fracture mechanics of Mg alloy wire in drawing process

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Journal of Magnesium and Alloys 2024年第5期12卷 2057-2069页

作者： sunghoon Choi Jongwon shin Joung sik suh Dongchoul kim Department of Mechanical Engineering Sogang UniversitySeoul04107Republic of Korea Advanced Metals Division Korea Institute of Materials ScienceChangwon 51508Republic of Korea

In this study,a numerical analysis was conducted on the ductile fracture of a 2-mm diameter Mg-1Zn-0.5Mn-0.5sr-0.1Ca alloy wire during *** hexagonally close-packed crystal structure of Mg alloys causes asymmetric fracture behavior,especially in the compression *** aim of this study is to develop a comprehensive damage model for Mg alloy wire that accurately predicts ductile fracture,with a focus on the compression region.A novel experimental method was introduced to measure the ductile fracture of Mg alloy wires under different stress *** wire drawing process was simulated using the Generalized Incremental stress-state dependent damage(GIssMO)Model and the semi-Analytical Model for Polymers(sAMP)*** damage model's prediction and the experimental results were found to be in excellent agreement,especially in determining crack *** analysis established a safe zone diagram for die angle and reduction ratio,and experimental validation confirmed the feasibility of this *** proposed damage model can provide a practical and reliable analysis for optimizing the drawing process of Mg alloy wire.

关键词： Mg alloy Wire drawing Finite element method Damage model safe zone diagram

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Advances in advanced solution-synthesis-based structural materials for tactile sensors and their intelligent applications

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InfoMat 2024年第1期6卷 31-64页

作者： Hongsen Niu Ning Li Eun-seoung kim Young kee shin Nam-Young kim Guozhen shen Yang Li school of Information science and Engineering University of JinanJinanthe People's Republic of China RFIC Centre Department of Electronics EngineeringKwangwoon UniversitySeoulRepublic of Korea Department of Molecular Medicine and Biopharmaceutical sciences Seoul National UniversitySeoulRepublic of Korea school of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijingthe People's Republic of China school of Microelectronics Shandong UniversityJinanthe People's Republic of China

Intelligent applications,with tactile sensors at their core,represent significant advancement in the field of artificial ***,achieving perception abilities in tactile sensors that match or exceed human skin remains a formidable ***,the design and implementation of hierarchical structural materials are considered the optimal solution to this *** contrast to conventional methods,such as complicated lithography and three-dimensional printing,the cost-effective and scalable nature of advanced solution-synthesis methods makes them ideal for preparing diverse tactile sensors with hierarchical structural ***,the process and applicability of advanced solution synthesis methods have yet to form a seamless ***,the development and intellectualization of tactile sensors based on advanced solution synthesis methods are still in their early stages,and require a comprehensive and systematic review to usher in *** study delves into the advantages and disadvantages of various advanced solution synthesis methods,providing detailed ***,the positive effects of hierarchical structural materials constructed using these methods in tactile sensors and their intelligent applications are also discussed in ***,the challenges and future opportunities faced by this emerging field are summarized.

关键词： aqueous phase reduction artificial intelligence hydrothermal growth in situ polymerization tactile sensor

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Functionally graded structure of a nitride-strengthened Mg_(2)si-based hybrid composite

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Journal of Magnesium and Alloys 2024年第3期12卷 1239-1256页

作者： Jeongho Yang Woongbeom Heogh Hogi Ju sukhyun kang Tae-sik Jang Hyun-Do Jung Mohammad Jahazi seung Chul Han seong Je Park Hyoung seop kim susmita Bose Amit Bandyopadhyay Martin Byung-Guk Jun Young Won kim Dae-kyeom kim Rigoberto CAdvincula Clodualdo Aranas Jr sang Hoon kim school of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Department of Mechanical Design Engineering Hanyang UniversitySeoul 04763Republic of Korea Process Research 3 Team LG Display Co.Ltd.PajuGyeonggi-do 10845Republic of Korea Department of Materials science and Engineering Chosun UniversityGwangju 61452Republic of Korea Institute of Well-Aging Medicare&Chosun University LAMP Center Chosun UniversityGwangju 61452Republic of Korea Division of Materials science and Engineering Hanyang UniversitySeoul 04763Republic of Korea Department of Mechanical Engineering École de Technologie SupérieureMontrealQuebec H3C 1K3Canada Material&Component Convergence R&D Center Korea Construction Equipment Technology InstituteGunsanJeollabuk-do 54002Republic of Korea school of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore Graduate Institute of Ferrous&Eco Materials Technology Pohang University of Science and TechnologyPohangGyeongsangbuk-do 37673Republic of Korea Advanced Institute for Materials Research Tohoku UniversitySendai 980-8577Japan Institute for Convergence Research and Education in Advanced Technology Yonsei UniversitySeoul 03722Republic of Korea school of Mechanical and Materials Engineering Washington State UniversityPullmanWashington 99164USA school of Mechanical Engineering Purdue UniversityWest LafayetteIndiana 47907USA Research Institute of Advanced Manufacturing Technology Korea Institute of Industrial TechnologyIncheon 21999Republic of Korea Department of Macromolecular science and Engineering Case Western Reserve UniversityClevelandOhio 44106USA Department of Chemical and Biomolecular Engineering and Joint Institute for Advanced Materials University of TennesseeKnoxvilleTennessee 37996USA Center for Nanophase Materials and sciences Oak Ridge National LaboratoryOak RidgeTennessee 37830USA Department of Mechanical Engineering University of New BrunswickFrederictonNew Brunswick E3B 5A3Cana

The ex-situ incorporation of the secondary siC reinforcement,along with the in-situ incorporation of the tertiary and quaternary Mg_(3)N_(2) and si_(3)N_(4) phases,in the primary matrix of Mg_(2)si is employed in order to provide ultimate wear resistance based on the laser-irradiation-induced inclusion of N_(2) gas during laser powder bed *** is substantialized based on both the thermal diffusion-and chemical reactionbased metallurgy of the Mg_(2)si–siC/nitride hybrid *** study also proposes a functional platform for systematically modulating a functionally graded structure and modeling build-direction-dependent architectonics during additive *** strategy enables the development of a compositional gradient from the center to the edge of each melt pool of the Mg_(2)si–siC/nitride hybrid ***,the coefficient of friction of the hybrid composite exhibits a 309.3%decrease to–1.67 compared to–0.54 for the conventional nonreinforced Mg_(2)si structure,while the tensile strength exhibits a 171.3%increase to 831.5 MPa compared to 485.3 MPa for the conventional *** outstanding mechanical behavior is due to the(1)the complementary and synergistic reinforcement effects of the siC and nitride compounds,each of which possesses an intrinsically high hardness,and(2)the strong adhesion of these compounds to the Mg_(2)si matrix despite their small sizes and low concentrations.

关键词： Laser powder bed fusion Mg_(2)si-siC/nitride hybrid composite Both the thermal diffusion-and chemical reaction-based metallurgy Functionally graded structure Compositional gradient Wear resistance.

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ROs-induced metabolic reprogramming to one-carbon metabolism and s-adenosylmethionine-mediated epigenetic modification in IL-10-producing B cells for the resolution of pneumonia

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Cellular & Molecular Immunology 2024年第2期21卷 203-204页

作者： sujin Lee Tae Jin kim Department of Immunology Sungkyunkwan University School of MedicineSuwon16419Republic of Korea

B cells have an essential immunoregulatory function,which is mediated by the secretion of IL-10 and TGFβand interaction with activated CD4^(+)T *** antibody-independent function of B cells contributes to ameliorating autoimmune diseases or infection-induced tissue *** this Cellular and Molecular Immunology issue,Fu et *** that regulatory B(Breg)cells play a critical role in resolving Pseudomonas aeruginosa-induced pneumonia[1].

关键词： metabolism pneumonia Immunology

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