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Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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journal of Energy chemistry 2025年第1期100卷 628-636页

作者： Yi Qi xueying chen bowen liu xuliang lin xueqing Qiu Yanlin Qin Guangdong Provincial Key Laboratory of Plant Resources biorefinery School of Chemical Engineering and Light Industry Guangdong University of Technology Guangdong Provincial Laboratory of chemistry and Fine chemical Engineering jieyang center Guangdong basic Research center of Excellence for Ecological security and Green development Guangdong University of Technology

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of Nico2O4spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the Nico2O4spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving cAO bond cleavage,hydroxyaldol condensation,and cAN bond formation,and a deeper mechanistic understanding derived from dFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： spinel biomass valorization Electrocatalysis Lignin oxidation coupling

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boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

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journal of Energy chemistry 2025年第1期100卷 760-769页

作者： lin Peng Yu bai Hang Li Meixiu Qu Zhenhua Wang Kening sun Advanced Research Institute of Multidisciplinary science Beijing Institute of Technology beijing Key Laboratory of chemical Power source and Green catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-s） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing b-doped atoms and P vacancies in Ni2P （Vp-b-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of b-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPss） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of b-doped atoms and P vacancies in Ni2P selectively promotes Li2s dissolution and nucleation ***,the Li-s batteries with Vp-b-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 c and high areal capacity of 8.03 mA h cm-2under E/s of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries

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Exosomes originating from neural stem cells undergoing necroptosis participate in cellular communication by inducing Tsc2 upregulation of recipient cells following spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3273-3286页

作者： shiming Li jianfeng Li Guoliang chen Tao lin Penghui Zhang Kuileung Tong Ningning chen shaoyu liu shenzhen Key Laboratory of bone Tissue Repair and Translational Research Department of Orthopedic SurgeryThe Seventh Affiliated HospitalSun Yat-sen UniversityShenzhenGuangdong ProvinceChina department of Orthopedic surgery The First Affiliated Hospital of Jinan UniversityGuangzhouGuangdong ProvinceChina department of Orthopedics and Traumatology Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina department of Orthopedic surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina department of Orthopedic surgery The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

We previously demonstrated that inhibiting neural stem cells necroptosis enhances functional recovery after spinal cord *** exosomes are recognized as playing a pivotal role in neural stem cells exocrine function,their precise function in spinal cord injury remains *** investigate the role of exosomes generated following neural stem cells necroptosis after spinal cord injury,we conducted singlecell RNA sequencing and validated that neural stem cells originate from ependymal cells and undergo necroptosis in response to spinal cord ***,we established an in vitro necroptosis model using neural stem cells isolated from embryonic mice aged 16-17 days and extracted *** results showed that necroptosis did not significantly impact the fundamental characteristics or number of *** sequencing of exosomes in necroptosis group identified 108 differentially expressed messenger RNAs,104 long non-coding RNAs,720 circular RNAs,and 14 microRNAs compared with the control *** of a competing endogenous RNA network identified the following hub genes:tuberous sclerosis 2(Tsc2),solute carrier family 16 member 3(slc16a3),and forkhead box protein P1(Foxp1).Notably,a significant elevation in Tsc2 expression was observed in spinal cord tissues following spinal cord ***2-positive cells were localized around sRY-box transcription factor 2-positive cells within the injury ***,in vitro analysis revealed increased Tsc2 expression in exosomal receptor cells compared with other *** assessment of cellular communication following spinal cord injury showed that Tsc2 was involved in ependymal cellular communication at 1 and 3 days post-injury through the epidermal growth factor and midkine signaling *** addition,slc16a3 participated in cellular communication in ependymal cells at 7 days post-injury via the vascular endothelial growth factor and macrophage migration inhibitory factor signaling

关键词： cellular communication competing endogenous RNA exosomes Foxp1 necroptosis neural stem cells slc16a3 spinal cord injury transcriptome sequencing Tsc2

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dielectric-ion-conductive ZnNb2O6 layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries

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journal of Energy chemistry 2025年第1期100卷 693-701页

作者： Haifeng Yang jian Wang Panpan Zhang xiaomin cheng Qinghua Guan jing dong bixian chen Lujie jia jing Zhang Yongzheng Zhang Yunjian liu Hongzhen lin school of Materials science and Engineering Jiangsu University i-Lab & cAs Key Laboratory of Nanophotonic Materials and devices Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Helmholtz Institute Ulm (HIU) Karlsruhe Institute of Technology (KIT) school of Materials science and Engineering Xi'an University of Technology state Key Laboratory of chemical Engineering East China University of Science and Technology

Rechargeable aqueous zinc-metal batteries （AZMbs） are promising candidates for large-scale energy storage systems due to their low cost and high ***,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn（H2O）62+solvation ***,learnt from self-generated solid electrolyte interphase （sEI） in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface （ZNb@Zn）,acting as a rapid desolvation *** zincophilic and dielectric-conductive properties of ZNb layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical ***,the as-prepared ZNb@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility （99.54%） even under high current density and depth of discharge ***,the assembled ZNb@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g-1and outstanding rate performance up to 10 A *** large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMbs.

关键词： Zn metal battery dielectric artificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition

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double [5]carbohelicene: facile synthesis, chiroptical properties,isomerization study, and lasing application

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science china chemistry 2025年第1期 233-240页

作者： Peipei liu Yantong Li Meng-xiang Wu Hao Kang xiao-Li Zhao lin xu linlin liu xiaodong Li junfeng Fang Zhiwei Fang Ya cheng Hai-bo Yang Huakang Yu xueliang shi state Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular Engineering East China Normal University school of Physics and Optoelectronics South China University of Technology Institute of Polymer Optoelectronic Materials & devices State Key Laboratory of Luminescent Materials & Devices South China University of Technology school of Physics and Electronic science Engineering Research Center of Nanophotonics & Advanced Instrument Ministry of EducationEast China Normal University state Key Laboratory of Precision spectroscopy School of Physics and Electronic Science East China Normal University

double carbohelicenes have attracted considerable attention due to their aesthetic structures, distinct π-conjugation extension, inherent chirality, and intriguing optical and electronic properties. Herein, the concise de novo synthesis of a new double[5]carbohelicene 1 together with its chiroptical properties, isomerization process and lasing application is presented. 1 was synthesized by a simple protocol involving the formation of a 6,6′-bipentacene as the key intermediate. It is worth noting that1 existed as two diastereomers 1-PP/MM and 1-PM, which were successfully isolated and unambiguously confirmed by xray crystallography. The optical resolution of the racemic 1-PP/MM was successfully achieved by chiral-phase highperformance liquid chromatography（HPLc）, and 1-PP and 1-MM were characterized by circular dichroism. Interestingly, it was found that 1-PP/MM could be completely isomerized to 1-PM upon heating, and the detailed thermodynamics and kinetics of the isomerization process were systematically investigated. 1-PM exhibited deep-red luminescence with emission maximum at 723 nm and fluorescence quantum yield as high as 32.95%. consequently, we can showcase the lasing application of 1-PM by doping with epoxy resin to assemble a bottle microlaser spontaneously, which the lasing wavelength is 796.6 nm at a threshold of 0.8 m j cm-2. We believe that our studies, including the facile synthesis methodology, detailed isomerization studies, and lasing application, will shed some light on the design and synthesis of novel carbohelical systems with more functions.

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sulfolane‑based Flame‑Retardant Electrolyte for High‑Voltage sodium‑Ion batteries

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Nano-Micro Letters 2025年第2期17卷 498-516页

作者： xuanlong He jie Peng Qingyun lin Meng Li Weibin chen Pei liu Tao Huang Zhencheng Huang Yuying liu jiaojiao deng shenghua Ye xuming Yang xiangzhong Ren xiaoping Ouyang jianhong liu biwei xiao jiangtao Hu Qianling Zhang Graphene composite Research center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China college of Energy Engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China school of Materials science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China shenzhen Eigen-Equation Graphene Technology co.Ltd Shenzhen 518000People’s Republic of China

sodium-ion batteries hold great promise as next-generation energy storage ***,the high instability of the electrode/electrolyte interphase during cycling has seriously hindered the development of *** particular,an unstable cathode–electrolyte interphase(cEI)leads to successive electrolyte side reactions,transition metal leaching and rapid capacity decay,which tends to be exacerbated under high-voltage ***,constructing dense and stable cEIs are crucial for high-performance *** work reports localized high-concentration electrolyte by incorporating a highly oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether,which exhibited excellent oxidative stability and was able to form thin,dense and homogeneous *** excellent cEI enabled the O3-type layered oxide cathode NaNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)to achieve stable cycling,with a capacity retention of 79.48%after 300 cycles at 1 c and 81.15%after 400 cycles at 2 c with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety of *** work provides a viable pathway for the application of sulfolane-based electrolytes on sIbs and the design of next-generation high-voltage electrolytes.

关键词： sodium-ion batteries sulfolane-based electrolyte High voltage Layered oxide cathode Flame retardant

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One kind motion of controllable constrained birkhoffian system:the absence of constraints

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Acta Mechanica sinica 2020年第3期36卷 735-741页

作者： j.chen F.x.Mei s.x.liu Y.x.Guo school of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China school of Physics Liaoning UniversityShenyang 110000China

This paper is devoted to discuss the motion of controllable constrained birkhoffian system along with its absence of *** first step is to establish the autonomous and non-autonomous differential equations of motion of the system,based on Pfaff-birkhoff ***,the existence of constraint multipliers are exhaustively ***,the definition of one kind motion of the system,called free motion,is given,which is described and analyzed by the absence of constraints that are determined by constraint *** 2 illustrates that one system can realize its free motion by selecting proper control *** particular,theorem 2 provides that one system can naturally realize free motion when we consider the integral of the unconstrained birkhoffian system as the constraints of constrained birkhoffian ***,the results obtained are illustrated by several examples.

关键词： constrained birkhoffian system Kinematic control Absence of constraint Free motion

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Mechanical properties of gas hydrate-bearing sediments during hydrate dissociation

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Acta Mechanica sinica 2018年第2期34卷 266-274页

作者： x.H.Zhang d.s.Luo x.b.Lu L.L.liu c.L.liu Institute of Mechanics Chinese Academy of SciencesBeijing 100190China college of Engineering University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Gas Hydrate Ministry of Land and ResourcesQingdao 266071China Qingdao Institute of Marine Geology Qingdao 266071China

The changes in the mechanical properties of gas hydrate-bearing sediments(GHbs) induced by gas hydrate(GH) dissociation are essential to the evaluation of GH exploration and stratum instabilities. Previous studies present substantial mechanical data and constitutive models for GHbs at a given GH saturation under the non-dissociated condition. In this paper, GHbs was formed by the gas saturated method, GH was dissociated by depressurization until the GH saturation reached different dissociation degrees. The stress–strain curves were measured using triaxial tests at a same pore gas pressure and different confining pressures. The results show that the shear strength decreases progressively by 30%–90% of the initial value with GH dissociation, and the modulus decreases by 50% –75%. simplified relationships for the modulus, cohesion, and internal friction angle with GH dissociated saturation were presented.

关键词： Gas hydrate-bearing sediments dissociation Mechanical properties shear strength Triaxial test

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Phase-field modeling for anisotropic ductile damage of magnesium alloys at finite deformations

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journal of Magnesium and Alloys 2024年第7期12卷 2967-2984页

作者： c.xie x.K.He x.liu j.H.Ye j.b.chen Faculty of Mechanical Engineering and Mechanics Ningbo UniversityNingbo 315211PR China Key Laboratory of High Temperature Wear Resistant Materials Preparation Technology of Hunan Province Hunan University of Science and TechnologyXiangtan 411201PR China

The damage anisotropy of an extruded ZK60 Mg alloy is characterized using tensile tests and scanning electronic *** accumulation of anisotropic deformations leads to the great differences of the dimple evolution and strains at fracture along different loading *** introduce the anisotropic deformation information into the damage constitutive relationship,a thermodynamically consistent phase-field model of ductile damage fully coupled with elastoplastic finite deformations is developed in this *** the user-defined constitutive relationship and displacement-temperature coupling element,the finite element simulations are *** results show that:(1)ZK60 Mg alloys presents clear R-value difference in 0°,45°,and 90°tests of intact *** 45°test possesses the greatest R-value(1.50)and the greatest strain at fracture,however,the R-value for 0°is less than 1,indicating the thinning is preferential.(2)The higher ultimate stress leads to a larger average dimension of the dimples,whereas the higher density correlates with a larger elongation ratio at the *** disappearance of the stress-bearing area indicates that the phase-field assumption on stress degradation is completely compatible with the dimple analysis on fractography.(3)The simulation results of the stress-strain relationships and damage paths correlate well with the experimental ductile damage of magnesium alloys at 200◦*** errors are basically attributed to the modeling parameters and finite element iteration *** proposed model presents fine applicability and reliability for the predictions of plastic deformations,ductile damage,and fracture of anisotropic Mg alloys.

关键词： ductile damage Anisotropy Phase field constitutive relationship Magnesium

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Misorientation dependent thermal condition-solute field cooperative effect on competitive grain growth in the converging case during directional solidification of a nickel-base superalloy

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journal of Materials science & Technology 2022年第1期96卷 151-159页

作者： x.b.Meng j.G.Li c.N.jing j.d.liu s.Y.Ma j.j.Liang c.W.Zhang M.Wang b.T.Tang T.lin j.L.chen x.L.Zhang Q.Li school of Mechanical and Automotive Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Institute of Metal Research Chinese Academy of SciencesShenyang110016China school of Materials science and Engineering Shandong Jianzhu UniversityJinan 250014China AEcc shenyang Liming Aero-Engine co. LTD.Shenyang110043China college of Material science and Engineering North Minzu UniversityYinchuan 750021China Faculty of electro-mechanical information Weifang University of Science and TechnologyShouguang262700China

Nowadays,thermal condition and solute field are considered as the potential dominant factors controlling competitive grain growth during directional solidification ***,the controlling modes and critical conditions of competitive grain growth have been drastically debated over the past two *** this work,thermal condition and solute field are combined to study the competitive grain growth in the converging case by experimental observation and numerical simulation of bicrystal *** find the competitive grain growth is controlled by the cooperative effect of thermal condition and solute field,and the controlling modes are related to the bicrystal misorientation between favorably and unfavorably oriented *** the unfavorably oriented grain is low misoriented,unfavorably oriented grain dominates grain selection,and the competitive grain growth performs as solute field ***,with the increase of unfavorably oriented grain’s misorientation,the grain selection converts into favorably oriented grain domination,and the competitive grain growth changes to thermal condition *** explain these abnormal transformation phenomena,we propose a misorientation dependent thermal condition-solute field cooperative domination model and identify the critical conditions by a critical misorientation(θ_(cm)).According to dynamic equation of dendrite growth,we calculate the critical misorientationθ;to prove this *** theoretical calculation results agree well with the experimental results.

关键词： competitive grain growth cooperative effect Thermal condition solute field critical misorientation Unusual overgrowth Abnormal transformation

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