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Artificial intelligence optimization and controllable slow-release iron sulfide realizes efficient separation of copper and arsenic in strongly acidic wastewater

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journal of Environmental sciences 2024年第5期139卷 293-307页

作者： xingfei Zhang chenglong lu jia Tian liqiang Zeng Yufeng Wang Wei sun haisheng han jianhua kang school of Minerals Processing and bioengineering Central South UniversityChangsha 410083China centre for Mined land Rehabilitation Sustainable Minerals InstituteThe University of QueenslandBrisbane 4072Australia

Iron sulfide(Fes)is a promising material for separating copper and arsenic from strongly acidic wastewater due to its s^(2-)slow-release ***,uncertainties arise because of the constant changes in wastewater composition,affecting the selection of operating parameters and Fes *** this study,the aging method was first used to prepare various controllable Fes nanoparticles to weaken the arsenic removal ability without affecting the copper *** experiments were conducted,and the results identified the cu/As ratio,h_(2)sO_(4) concentration,and Fes dosage as the three main factors influencing the separation *** backpropagation artificial neural network(bP-ANN)model was established to determine the relationship between the influencing factors and the separation *** correlation coefficient(R)of overall model was 0.9923 after optimizing using genetic algorithm(GA).The bP-GA model was also solved using GA under specific constraints,predicting the best solution for the separation process in *** predicted results show that the high temperature and long aging time of Fes were necessary to gain high separation efficiency,and the maximum separation factor can reached 1,*** study provides a suitable sulfurizing material and a set of methods and models with robust flexibility that can successfully predict the separation efficiency of copper and arsenic from highly acidic environments.

关键词： Fes nanoparticles Aging sulfide precipitation Orthogonal experiment Artificial neural network Prediction

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synchronized off-harmonic probe laser with highly variable pulse duration for laser-plasma interaction experiments

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high Power laser science and Engineering 2024年第1期12卷 99-107页

作者： j.hornung Y.Zobus h.lorenté c.brabetz b.Zielbauer V.bagnoud GsI helmholtzzentrum für schwerionenforschung Gmbh DarmstadtGermany Institut d’Optique UniversitéParis-SaclayPalaiseauFrance Institut für Angewandte Physik Technische Universität DarmstadtDarmstadtGermany

This paper presents the development and experimental utilization of a synchronized off-harmonic laser system designed as a probe for ultra-intense laser±plasma interaction experiments. The system exhibits a novel seed-generation design,allowing for a variable pulse duration spanning over more than three orders of magnitude, from 3.45 picoseconds to 10 nanoseconds. This makes it suitable for various plasma diagnostics and visualization techniques. In a side-view configuration, the laser was employed for interferometry and streaked shadowgraphy of a laser-induced plasma while successfully suppressing the self-emission background of the laser±plasma interaction, resulting in a signal-to-self-emission ratio of 110 for this setup. These properties enable the probe to yield valuable insights into the plasma dynamics and interactions at the PhElIx facility and to be deployed at various laser facilities due to its easy-to-implement design.

关键词： interferometry laser-plasma interaction off-harmonic probe laser streaked shadowgraphy

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Temperature and structure measurements of heavy-ion-heated diamond using in situ x-ray diagnostics

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Matter and Radiation at Extremes 2024年第4期9卷 80-89页

作者： j.lutgert P.hesselbach M.schorner V.bagnoud R.belikov P.Drechsel b.heuser O.shumphries P.Katrik b.lindqvist c.Qu R.Redmer D.Riley G.schaumann s.schumacher A.Tauschwitz D.Varentsov K.Weyrich x.Yu b.Zielbauer Zs.Major P.Neumayer D.Kraus Institut fur Physik Universitat RostockAlbert-Einstein-Str.2318059 RostockGermany GsI helmholtzzentrum fur schwerionenforschung Planckstr.164291 DarmstadtGermany Institut für Angewandte Physik Goethe-Universität Frankfurt am MainMax-von-Laue-Str.160438 Frankfurt am MainGermany Institut fur Geowissenschaften Goethe-Universitat Frankfurt am MainAltenhoferallee 160438 Frankfurt am MainGermany helmholtz-Zentrum Dresden-Rossendorf Bautzner Landstr.40001328 DresdenGermany European xFEl Gmbh Holzkoppel 422869 SchenefeldGermany centre for Plasma Physics School of Mathematics and PhysicsQueen’s University BelfastUniversity RoadBelfast BT71NNUnited Kingdom Institut für kernphysik Technische Universität DarmstadtSchlossgartenstr.964289 DarmstadtGermany state key laboratory of Nuclear Physics and Technology Institute of Heavy Ion PhysicsPeking UniversityBeijing 100871China helmholtz Institut jena Frobelstieg 307743 JenaGermany

We present in situ measurements of spectrally resolved x-ray scattering and x-ray diffraction from monocrystalline diamond samples heatedwith an intense pulse of heavy *** this way,we determine the samples’heating dynamics and their microscopic and macroscopic structuralintegrity over a timespan of several *** the ratio of elastic to inelastic scattering with state-of-the-art density functionaltheory molecular dynamics simulations allows the inference of average temperatures around 1300 K,in agreement with predictions fromstopping power *** simultaneous diffraction measurements show no hints of any volumetric graphitization of the material,butdo indicate the onset of fracture in the diamond *** experiments pave the way for future studies at the Facility for Antiproton andIon Research,where a substantially increased intensity of the heavy ion beam will be available.

关键词： heated intense structure

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Rationally construction of atomic-precise interfacial charge transfer channel and strong build-in electric field in nanocluster-based Zscheme heterojunctions with enhanced photocatalytic hydrogen production

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Nano Research 2024年第6期17卷 5002-5010页

作者： Qingtao Zhu honglei shen chao han liu huang Yanting Zhou Yuanxin Du xi kang Manzhou Zhu Department of Materials science and Engineering Centre for Atomic Engineering of Advanced MaterialsKey Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationKey Laboratory of Functional Inorganic Material Chemistry of Anhui ProvinceAnhui UniversityHefei 230601China

The lack of effective charge transfer driving force and channel limits the electron directional migration in nanoclusters(Nc)-based heterostructures,resulting in poor photocatalytic ***,a Z-scheme Nc-based heterojunction(Pt1Ag28-bTT/coP,bTT=1,3,5-benzenetrithiol)with strong internal electric field is constructed via interfacial co-s bond,which exhibits an absolutely superiority in photocatalytic performance with 24.89 mmol·h^(−1)·g−1 h_(2)production rate,25.77%apparent quantum yield at 420 nm,and~100%activity retention in stability,compared with Pt1Ag28-bDT/coP(bDT=1,3-benzenedithiol),Ag29-bDT/coP,and *** enhanced catalytic performance is contributed by the dual modulation strategy of inner core and outer shell of Nc,wherein,the center Pt single atom doping regulates the band structure of Nc to match well with coP,builds internal electric field,and then drives photogenerated electrons steering;the accurate surface s modification promotes the formation of co-s atomic-precise interface channel for further high-efficient Z-scheme charge directional *** work opens a new avenue for designing Nc-based heterojunction with matchable band structure and valid interfacial charge transfer.

关键词： atomically precise metal nanocluster Z-scheme heterojunction interfacial charge transfer build-in electric field photocatalytic hydrogen production

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Resistive field generation in intense proton beam interaction with solid targets

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Matter and Radiation at Extremes 2024年第1期9卷 35-43页

作者： W.Q.Wang j.j.honrubia Y.Yin x.h.Yang F.Q.shao Department of Physics National University of Defense TechnologyHunanChina ETsI Aeronáutica y del Espacio Universidad Politécnica de MadridMadridSpain Department of Nuclear science and Technology National University of Defense TechnologyHunanChina

The brown-Preston-singleton(bPs)stopping power model is added to our previously developed hybrid code to model ion beam-plasma *** simulations show that both resistive field and ion scattering effects are important for proton beam transport in a solid target,in which they compete with each *** the target is not completely ionized,the self-generated resistive field effect dominates over the ion scattering ***,when the target is completely ionized,this situation is ***,it is found that Ohmic heating is important for higher current densities and materials with high *** energy fraction deposited as Ohmic heating can be as high as 20%-30%.Typical ion divergences with half-angles of about 5°-10°will modify the proton energy deposition substantially and should be taken into account.

关键词： interaction beam intense

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UAV-Assisted Dynamic Avatar Task Migration for Vehicular Metaverse services: A Multi-Agent Deep Reinforcement learning Approach

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IEEE/cAA journal of Automatica sinica 2024年第2期11卷 430-445页

作者： jiawen kang junlong chen Minrui xu Zehui xiong Yutao jiao luchao han Dusit Niyato Yongju Tong shengli xie IEEE school of Automation Guangdong University of TechnologyGuangzhou 510006China 111 center for Intelligent batch Manufacturing based on IoT Technology Guangzhou 510006China key laboratory of Intelligent Information Processing and system Integration of IoT Ministry of EducationGuangzhou 510006China school of computer science and Engineering Nanyang Technological UniversitySingaporeSingapore Pillar of Information systems Technology and Design Singapore University of Technology and DesignSingaporeSingapore college of communication Engineering Army Engineering University of PLANanjing 210007China National Natural science Foundation of china Beijing 100085China key laboratory of Intelligent Detection and IoT in Manufacturing Ministry of EducationGuangzhou 510006China Guangdong key laboratory of IoT Information Technology Guangzhou 510006China

Avatars, as promising digital representations and service assistants of users in Metaverses, can enable drivers and passengers to immerse themselves in 3D virtual services and spaces of UAV-assisted vehicular Metaverses. however, avatar tasks include a multitude of human-to-avatar and avatar-to-avatar interactive applications, e.g., augmented reality navigation,which consumes intensive computing resources. It is inefficient and impractical for vehicles to process avatar tasks locally. Fortunately, migrating avatar tasks to the nearest roadside units(RsU)or unmanned aerial vehicles(UAV) for execution is a promising solution to decrease computation overhead and reduce task processing latency, while the high mobility of vehicles brings challenges for vehicles to independently perform avatar migration decisions depending on current and future vehicle status. To address these challenges, in this paper, we propose a novel avatar task migration system based on multi-agent deep reinforcement learning(MADRl) to execute immersive vehicular avatar tasks dynamically. specifically, we first formulate the problem of avatar task migration from vehicles to RsUs/UAVs as a partially observable Markov decision process that can be solved by MADRl algorithms. We then design the multi-agent proximal policy optimization(MAPPO) approach as the MADRl algorithm for the avatar task migration problem. To overcome slow convergence resulting from the curse of dimensionality and non-stationary issues caused by shared parameters in MAPPO, we further propose a transformer-based MAPPO approach via sequential decision-making models for the efficient representation of relationships among agents. Finally, to motivate terrestrial or non-terrestrial edge servers(e.g., RsUs or UAVs) to share computation resources and ensure traceability of the sharing records, we apply smart contracts and blockchain technologies to achieve secure sharing management. Numerical results demonstrate that the proposed approach

关键词： Avatar blockchain metaverses multi-agent deep reinforcement learning transformer UAVs

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Achieving Negatively charged Pt single Atoms on Amorphous Ni(Oh)_(2)Nanosheets with Promoted hydrogen Absorption in hydrogen Evolution

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Nano-Micro letters 2024年第10期16卷 213-224页

作者： Yue liu Gui liu xiangyu chen chuang xue Mingke sun Yifei liu jianxin kang xiujuan sun lin Guo school of chemistry Beijing Advanced Innovation Center for Biomedical EngineeringKey Laboratory of Bio-inspired Smart Interfacial Science and TechnologyBeihang UniversityBeijing 100191People's Republic of China school of chemistry Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of EducationXiangtan UniversityXiangtan 411105HunanPeople'Republic of China

single-atom(sA)catalysts with nearly 100%atom utilization have been widely employed in electrolysis for decades,due to the outperforming catalytic activity and ***,most of the reported sA catalysts are fixed through the strong bonding between the dispersed single metallic atoms with nonmetallic atoms of the substrates,which greatly limits the controllable regulation of electrocatalytic activity of sA *** this work,Pt-Ni bonded Pt sA catalyst with adjustable electronic states was successfully constructed through a controllable electrochemical reduction on the coordination unsaturated amorphous Ni(Oh)_(2)nanosheet *** on the x-ray absorption fine structure analysis and first-principles calculations,Pt sA was bonded with Ni sites of amorphous Ni(Oh)_(2),rather than conventional O sites,resulting in negatively charged Pt^(δ-).In situ Raman spectroscopy revealed that the changed configuration and electronic states greatly enhanced absorbability for activated hydrogen atoms,which were the essential intermediate for alkaline hydrogen evolution *** hydrogen spillover process was revealed from amorphous Ni(Oh)_(2)that effectively cleave the h-O-h bond of h_(2)O and produce h atom to the Pt sA sites,leading to a low overpotential of 48 mV in alkaline electrolyte at-1000 mA cm^(-2)mg^(-1)_(Pt),evidently better than commercial Pt/c *** work provided new strategy for the control-lable modulation of the local structure of sA catalysts and the systematic regulation of the electronic states.

关键词： hydrogen evolution reaction Amorphous Pt single atoms hydrogen spillover

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A Dietary supplement jinghuosu Ameliorates Reproductive Damage Induced by Tripterygium Glycosides

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chinese journal of Integrative Medicine 2024年第4期30卷 330-338页

作者： MA jing sUN bo TE li-ger hUANG xin ZUO xin hAN xiao-ke WANG shu-song hebei key laboratory of Reproductive Medicine Hebei Institute of Reproductive HealthHebei Reproductive Health HospitalShijiazhuang(050071)China Graduate school of hebei Medical University Shijiazhuang(050017)China school of chemistry and Materials science Hebei Normal UniversityShijiazhuang(050024)China xingtai Infertility specialist hospital XingtaiHebei Province(054000)China

Objective To determine the possible protective effects of jinghuosu,a dietary supplement(Ds),on tripterygium glycosides(TG)-induced reproductive system injury in rats and its underlying *** A reproductive damage model was established in rats by feeding of ***-eight male sprague Dawley rats were randomly divided into 4 groups using a random number table(n=7 in each):control(c)group,model(M)group,Ds group and l-carnitine(lc)*** in M,Ds and lc groups received 40 mg/kg TGs *** from the 5th week,after administration of TGs for 4 h every day,rats in Ds and lc groups were administered with 2.7 g/kg Ds and 0.21 g/kg lc,respectively,for protective treatment over the next 4 *** in Group c continued to receive the control ***-eosin staining was used for histopathological analysis of rat testicular ***-linked immunosorbent assay was performed to measure alkaline phosphatase(AlP),lactate dehydrogenase,alcohol dehydrogenase,total antioxidant capacity(T-AOc),superoxide dismutase,glutathione peroxidase(Gsh-Px),and malondialdehyde(MDA)*** assay was used to determine the serum testosterone *** real-time PcR and Western blotting were conducted to analyze the expression of genes and proteins related to the testosterone synthesis pathway and the nuclear factor erythroid 2-related factor 2/heme oxygenase 1 antioxidant *** Oral administration of TGs induced significant increases in the testicular levels of zinc transporter 1 and MDA(Phe other hand,sperm concentration,sperm motility,and serum testosterone,serum zinc,testicular zinc,Zrt-,Irt-like protein 1,AlP,luteinizing hormone(lh)receptor,steroidogenic acute regulatory protein,cytochrome P450 family 11 subfamily A member 1,3β-hydroxysteroid dehydrogenase 1 T-AOc,Gsh-Px,nuclear factor erythroid 2-related factor 2,heme oxygenase-1 and NAD(P)h:quinone oxidoreductase 1 levels decreased following TG

关键词： dietary supplement jinghuosu tripterygium glycosides reproductive damage infertility

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congener-derived template to construct lithiophilic organic-inorganic layer/interphase for high volumetric capacity dendrite-free li metal batteries

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chinese chemical letters 2024年第3期35卷 453-460页

作者： kang Yang long li Yuanbin xiao Qiaoli Zhang chenpeng xi borong li Yan Yu chengkai Yang key laboratory of Advanced Materials Technologies International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesCollege of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

The development of lithium-metal batteries(lMbs)is seriously restricted by the out-of-control dendrites growth and infinite volume ***,a pervasive organic-inorganic layer construction strategy is reported for the composite lithium metal anode with congener-derived organic-inorganic solid electrolyte interphase(sEI).In this strategy,the organic-inorganic Ag@polydopamine(Ag@PDA)layer is coated on the arbitrary substrates by a simple two-step *** thin and stable congener-derived sEI is insitu formed with fewer inorganic components and more organic components during charging/*** polydopamine with sufficient adhesion groups and lithiophilic Ag layer realize near-zero nucleation overpotential during lithium *** low interface resistance and stable lithium deposition are ***,the practical areal and volumetric capacities of the composite anode with three-dimensional copper(3Dcu)as the substrate are 10 mAh/cm^(2)and 1538 mAh/cm^3(*** mass of anode).The symmetrical cell shows very low polarization voltage(10 mV)and more than 2500 h cycles life at 1 mA/cm^(2)(1 mAh/cm^(2)).The liNi_(0.8)co_(0.1)Mn_(0.1)O_(2)(NcM811)-based full cells show improved capacity retention(82%)after 100 cycles at 0.5 *** modified lithiophilic anode with congener-derived interphase provides a promising strategy to realize the next-generation dendrite-free lMbs.

关键词： lithium metal anode congener-derived lithiophilicity Volumetric capacity Organic-inorganic interphase

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Enhanced electrochemical performance of li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3) solid electrolyte by anion doping

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Nano Research 2024年第3期17卷 1465-1472页

作者： jingrui kang xu Guo Rui Gu honglei hao Yi Tang jiahui Wang li jin hongfei li xiaoyong Wei Electronic Materials Research laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China school of Energy and Materials Shanghai Key Laboratory of Engineering Materials Application and EvaluationShanghai Polytechnic UniversityShanghai 201209China

Nowadays,the majority of the studies on the substitution are focused on cations(such as Y^(3+),Ti^(4+),P^(5+),etc.)in li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3)(lATP),while there are few studies on the substitution of anion O^(2-).In this work,the modified lATP with a series of licl(lATPclx,x=0.1,0.2,0.3,0.4)additives is prepared to enhance ionic *** successful introduction of cl-makes the length of the c axis decrease from 20.822(2)to 20.792(1)Å,and the bulk conductivity of 2.13×10^(-3) s·cm^(-1) is achieved in lATPcl_(0.3).Moreover,the Al/Ti-O1/cl1 and Al/Ti-O_(2)/cl_(2) distance decrease,while the li1-O_(2)/cl_(2) distance *** ions migrate more easily in the nanochannel of *** addition,the licl additive increases the relative density and the grain boundary conductivity of lATPclx ***,a higher ionic conductivity of 2.12×10^(–4) s·cm^(-1) and a low activation energy of 0.30 eV are obtained in lATPcl_(0.3).correspondingly,the symmetric cell exhibits a low overpotential of±50 mV for over 200 h in lATPcl_(0.3).The solid-state li|lATPcl_(0.3)|NcM811(NcM811=liNi0.8co0.1Mn0.1O_(2))battery exhibits high initial capacity 185.1 mAh·g^(-1) with a capacity retention rate of 95.4%after 100 cycles at 0.5 *** result suggests that licl additive is an effective strategy to promote electrochemical properties of lATP solid electrolyte and can be considered for reference to other inorganic solid electrolytes systems.

关键词： li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3)(lATP)solid electrolyte anion doping ionic conductivity cyclic performance

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