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Increasing poly.er scission rate by.ty.ng an overhand knot

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Science china chemistry 2024年第11期67卷 3498-3499页

作者： y.heng Hu Jennifer T.Ou Jim y.huang y.anning Feng Department of chemistry.and Biochemistry The University of Oklahoma

Similar to the phenomenon of knotted ropes in life, knotted climbing ropes will reduce their strength due to knots. Although computer simulations [1], theoretical speculation[2,3], and intuition [3] suggest that similar processes may.occur at the nanoscale, this hy.othesis has not been experimentally.proven before. With the increasing maturity.of molecular recognition and self-assembly. a research communication by.Leigh et al. [4] published in Nature chemistry.introduced a molecular overhand knot into a poly.er to study.its effect on the scission rate of the poly.er chain under tension.

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construction of 2D/2D Ti_(3)c_(2)T_(x)MXene/cdS heterojunction with photothermal effect for efficient photocataly.ic hy.rogen production

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Journal of Materials Science & Technology 2024年第4期171卷 1-9页

作者： T.y.huang Z.y.ng S.y.y.ng Z.H.Dai y.J.Liu J.H.Liao G.y.Zhong Z.J.Xie y.P.Fang S.S.Zhang Key.Laboratory.for Biobased Materials and Energy.of Ministry.of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Phy.ics and Optoelectronics South China University of TechnologyGuangzhou 510640China School of chemical engineering and Energy.Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity.of semiconductors to visible and infrared light is a key.constraint on the utilization of light energy.in photocataly.ic *** photocataly.ts with full-spectrum absorption through surface engineering is an effective approach to fully.harnessing light energy.in semiconductor ***,a novel stable Ti_(3)c_(2)T_(x)MXene/cdS heterojunction cataly.t is obtained by.in-situ epitaxial growth of two-dimensional(2D)cdS nanosheets on 2D MXene interface via a solvothermal *** exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-aly.ic hy.rogen evolution capability.upon the heterogeneous *** unique 2D/2D structure effectively.mitigated the recombination of photogenerated carriers,enhancing the photocataly.ic performance of the ***,the composite cataly.t exhibits a significantly.higher surface temperature of 80.4℃under visible light irradiation at an intensity.of 0.1 W/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite cataly.t with photothermal ef-fect demonstrates a remarkable hy.rogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of cdS *** study.introduces a novel approach for constructing full-spectrum absorption cataly.ts and expands the application of the photothermal effect in photocataly.ic hy.rogen evolution research.

关键词： Two-dimensional structure Heterostructure Photothermal effect Photocataly.t Hy.rogen evolution

A thermody.amic perspective on electrode poisoning in solid oxide fuel cells

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International Journal of Minerals,Metallurgy.and Materials 2024年第6期31卷 1449-1455页

作者： Kevin huang Department of Mechanical engineering University of South CarolinaColumbiaUSA

A critical challenge to the commercialization of clean and high-efficiency.solid oxide fuel cell(SOFc)technology.is the insuf-ficient stack lifespan caused by.a variety.of degradation mechanisms,which are associated with cell components and chemical *** components related degradation refers to thermal/chemical/electrochemical deterioration of cell materials under operating conditions,whereas the latter regards impurities in feedstocks of oxidant(air)and reductant(fuel).This article provides a thermody.amic perspective on the understanding of the impurities-induced degradation mechanisms in *** discussion focuses on using thermody.amic ana-ly.is to elucidate poisoning mechanisms in cathodes by.impurity.species such as cr,cO_(2),H_(2)O,and SO_(2) and in the anode by.species such as S(or H_(2)S),SiO_(2),and P_(2)(or PH_(3)).The author hopes the presented fundamental insights can provide a theoretical foundation for search-ing for better technical solutions to address the critical degradation challenges.

关键词： impurities air fuel reaction activity

Tailored architecture of composite electroly.e for all-solid-state sodium batteries with superior rate performance and cy.le life

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Nano Research 2024年第5期17卷 4171-4180页

作者： Xiang Guan Zhenhua Jian Xingan Liao Wenchao Liao y.nfei huang Dazhu chen Robert K.y.Li chen Liu Shenzhen Key.Laboratory.of Poly.er Science and Technology Guangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518055China Department of Materials Science and engineering City University of Hong KongHong KongChina

Seeking for composite electroly.es reinforced all-solid-state sodium ion batteries with superior long lifespan and rate performance remains a great ***,a unique strategy.to tailor the architecture of composite electroly.e via inserting poly.er chains into a small quantity.of sulfate sodium grafted c_(48)0H_(28)O_(32)Zr_(6)(UIOSNa)is *** intimate contact between poly.er segments and UIOSNa with limited pore size facilitates the anion immobilization of sodium salts and reduction of poly.er cry.tallinity.thereby.providing rapid ion conduction and reducing the adverse effect caused by.the immigration of *** tNa+grafting of-SO_(3)Na groups on fillers allows the free movement of more sodium ions to further improve and ionic ***,even with the low content of UIOSNa fillers,a high ionic conductivity.of 6.62×10^(-4) S·cm^(-1) at 60℃ and a transference number of 0.67 for the special designed composite electroly.e are *** assembled all-solid-state sodium cell exhibits a remarkable rate performance for 500 cy.les with 95.96%capacity.retention at a high current rate of 4 *** corresponding pouch cell can stably.work for 1000 cy.les with 97.03%capacity.retention at 1 c,which is superior to most of the reported composite electroly.es in the literature.

关键词： solid state sodium battery composite electroly.e rate performance cy.le life

Fast Blood Oxy.enation through Hemocompatible Asy.metric Poly.er of Intrinsic Microporosity.Membranes

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Research 2024年第1期2023卷 261-270页

作者： Xinxi huang Junping huang Pengc.eng Su Wanbin Li Guangdong Key.Laboratory.of Environmental Pollution and Health School of EnvironmentJinan UniversityGuangzhou 511443China

Membrane technology.has attracted considerable attention for chemical and medical applications,among *** organs play.important roles in medical science.A membrane oxy.enator,also known as artificial lung,can replenish O_(2) and remove cO_(2) of blood to maintain the metabolism of patients with cardiopulmonary.***,the membrane,a key.component,is subjected to inferior gas transport property.leakage propensity.and insufficient *** this study.we report efficient blood oxy.enation by.using an asy.metric nanoporous membrane that is fabricated using the classic nonsolvent-induced phase separation method for poly.er of intrinsic *** intrinsic superhy.rophobic nanopores and asy.metric configuration endow the membrane with water impermeability.and gas ultrapermeability.up to 3,500 and 1,100 gas permeation units for cO_(2) and O_(2),***,the rational hy.rophobic–hy.rophilic nature,electronegativity.and smoothness of the surface enable the substantially.restricted protein adsorption,platelet adhesion and activation,hemoly.is,and thrombosis for the ***,during blood oxy.enation,the asy.metric nanoporous membrane shows no thrombus formation and plasma leakage and exhibits fast O_(2) and cO_(2) transport processes with exchange rates of 20 to 60 and 100 to 350 ml m^(−2) min^(−1),respectively.which are 2 to 6 times higher than those of conventional *** concepts reported here offer an alternative route to fabricate high-performance membranes and expand the possibilities of nanoporous materials for membrane-based artificial organs.

关键词： porosity asy.metric Oxy.en

Sintering of phosphor-glass composites goes ultrafast

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Science china Materials 2024年第8期67卷 2711-2712页

作者： Xiaoy.ng huang college of Electronic Information and Optical engineering Taiyuan University of TechnologyTaiyuan 030024China

Nowaday.,with the rapid technological progress of high-quality.lightings and high-end display.,high-power white light-emitting diodes(WLEDs)and high-brightness white laser diodes(WLDs)featuring with high energy.density.excitation,high output power and high device stability.have been extensively.investigated and regarded as the new-generation solid-state light sources[1–6].

关键词： diodes WLED white

Tomographic reconstruction of the Earth’s magnetosheath from multiple spacecraft:a theoretical study

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Earth and Planetary.Phy.ics 2024年第1期8卷 204-214页

作者： A.M.Jorgensen TianRan Sun y.huang L.Li R.Xu L.Dai chi Wang New Mexico Institute of Mining and Technology SocorroNMUSA National Space Science center Chinese Academy of SciencesBeijing 100190China Tsinghua University Beijing 100084China

Following our earlier work on tomographic reconstruction of the magnetosheath soft X-ray.emissions with superposed epoch analy.is of many.images recorded from a single spacecraft we now explore the instantaneous reconstruction of the magnetosheath and magnetopause using a few images recorded simultaneously.from a few *** work is motivated by.the prospect of possibly.having two or three soft X-ray.imagers in space in the coming y.ars,and that many.phenomena which occur at the magnetopause boundary.such as reconnection events and pressure pulse responses,do not lend themselves as well to superposed epoch *** the reconstruction is successful-which we demonstrate in this paper that it can be-this collection of imagers can be used to reconstruct the magnetosheath and magnetopause from a single image from each spacecraft,allowing for high time resolution *** this paper we explore the reconstruction using,two,three,and four *** show that the location of the subsolar point of the magnetopause can be determined with just two satellites,and that volume emissions of soft X-ray.,and the shape of the boundary.can be reconstructed using three or more satellites.

关键词： magnetosheath tomography soft X-ray.imaging SMILE

Quantify.ng the strength of magnetic fields using bary.n electric charge correlation

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Nuclear Science and Techniques 2024年第8期35卷 5-8页

作者： Xu‑Guang huang Phy.ics Department and center for Particle Phy.ics and Field Theory Fudan UniversityShanghai 200433China Key.Laboratory.of Nuclear Phy.ics and Ion‑beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Research center for Theoretical Nuclear Phy.ics National Natural Science Foundation of China and Fudan UniversityShanghai 200438China

Although heavy.ion collisions generate strong magnetic fields,their direct measurement is a challenging task.A new observable,the bary.n electric charge correlation,was recently.found to be sensitive to the magnetic field strength and thus could be used as a magnetometer for heavy.ion ***,this observable may.shed light on the equation of state and phase structure of quantum chromody.amics(QcD)under magnetic *** and understanding the phase structure of quantum chromody.amics(QcD)is important in contemporary.phy.ics[1].

关键词： charge observable magnetic

Distributed Nash Equilibrium Seeking on compact Action Sets over Jointly.Strongly.connected Switching Networks

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Journal of Sy.tems Science & complexity 2024年第1期37卷 63-81页

作者： HE Xiongnan huang Jie Department of Mechanical and Automation engineering The Chinese University of Hong KongHong Kong 999077China.

This paper studies the distributed Nash equilibrium seeking(DNES)problem for games whose action sets are compact and whose network graph is switching satisfy.ng the jointly.strongly.connected *** keep the actions of all play.rs in their action sets all the time,one has to resort to the projected gradient-based *** the assumption that the unique Nash equilibrium is the unique equilibrium of the pseudogradient sy.tem,an algorithm is proposed that is able to exponentially.find the Nash ***,the authors also consider the distributed Nash equilibrium seeking problem for games whose actions are governed by.high-order integrator dy.amics and belong to some compact *** examples are used to illustrate the proposed approach.

关键词： compact action sets jointly.strongly.connected switching graphs Nash equilibrium seeking projected gradient-based algorithm.