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Platinum modification of metallic cobalt defect sites for efficient electrocatalytic oxidation of 5-hydroxymethylfurfural

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Journal of Energy Chemistry 2025年第2期101卷 463-473页

作者： Haoyu Zhan Baixue Cheng Yankun Lu Danning Xing Xingshuai lv Huining Huang Thomas Frauenheim Tao Wang Peng Zhou State Key Laboratory of Bio-fibers and Eco-textiles College of Materials Science and Engineering Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles Institute of Marine Biobased Materials Qingdao University Shandong Institute of Advanced Technology College of Chemistry and Chemical Engineering Ocean University of China Tianjin Key Laboratory of Advanced Functional Porous Materials Institute for New Energy Materials & Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of Technology School of Science Constructor University Beijing Computational Science Research Center College of Chemistry and Molecular Engineering Qingdao University of Science and Technology

Co3O4possesses both direct and indirect oxidation effects and is considered as a promising catalyst for the oxidation of 5-hydroxymethylfurfural（HMF）.However,the enrichment and activation effects of Co3O4on OH-and HMF are weak,which limits its further *** defect engineering can regulate the electronic structure,optimize the adsorption of intermediates,and improve the catalytic activity by breaking the symmetry of the material,which is rarely involved in the upgrading of *** this work,we prepare Co3O4with metal defects and load the precious metal platinum at the defect sites（PtVco）.The results of in-situ characterizatio ns,electrochemical measurements,and theoretical calculations indicate that the reduction of Co-Co coordination number and the formation of Pt-Co bond induce the decrease of electron filling in the antibonding orbitals of Co *** resulting upward shift of the d-band center of Co combined with the characteristic adsorption of Pt species synergically enhances the enrichment and activation of organic molecules and OH species,thus exhibiting excellent HMF oxidation activity(including a lower onset potential（1.14 V） and 19 times higher current density than pure Co3O4at 1.35 V).In summary,this work explores the adsorption enhancement mechanism of metal defect sites modified by precious metal in detail,provides a new option for improving the HMF oxidation activity of cobalt-based materials,broadens the application field of metal defect based materials,and gives an innovative guidance for the functional utilization of metal defect sites in biomass conversion.

关键词： Adsorption enhancement Biomass upgrading Coordination environment Electrocatalysis Metallic defect

Targeting vulnerable microcircuits in the ventral hippocampus of male transgenic mice to rescue Alzheimer‑like social memory loss

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Military Medical Research 2025年第1期12卷 48-71页

作者： Hui-Yang Lei Gui-Lin Pi Ting He rui Xiong Jing-Ru lv Jia-Le Liu dong-Qin Wu Meng-Zhu Li Kun Shi Shi-Hong Li Na-Na Yu Yang Gao Hui-Ling Yu Lin-Yu Wei Xin Wang Qiu-Zhi Zhou Pei-Lin Zou Jia-Yang Zhou Ying-Zhou Liu Nai-Ting Shen Jie Yang Dan Ke Qun Wang Gong-Ping Liu Xi-Fei Yang Jian-Zhi Wang Ying Yang Department of Pathophysiology School of Basic MedicineKey Laboratory of Education Ministry of China/Hubei Province for Neurological DisordersTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Traditional Chinese Medicine the Central Hospital of WuhanTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430014China Key Laboratory of Modern Toxicology of Shenzhen Shenzhen Center for Disease Control and PreventionShenzhen 518055GuangdongChina Co‑Innovation Center of Neuroregeneration Nantong UniversityNantong 226000JiangsuChina

Background:Episodic memory loss is a prominent clinical manifestation of Alzheimer’s disease(AD),which is closely related to tau pathology and hippocampal *** to the heterogeneity of brain neurons,the specific roles of different brain neurons in terms of their sensitivity to tau accumulation and their contribution to AD-like social memory loss remain ***,further investigation is ***:We investigated the effects of AD-like tau pathology by Tandem mass tag proteomic and phosphoproteomic analysis,social behavioural tests,hippocampal electrophysiology,immunofluorescence staining and in vivo optical fibre recording of GCaMP6f and ***,we utilized optogenetics and administered ursolic acid(UA)via oral gavage to examine the effects of these agents on social memory in ***:The results of proteomic and phosphoproteomic analyses revealed the characteristics of ventral hippocampal CA1(vCA1)under both physiological conditions and AD-like tau *** tau progressively accumulated,vCA1,especially its excitatory and parvalbumin(PV)neurons,were fully filled with mislocated and phosphorylated tau(p-Tau).This finding was not observed for dorsal hippocampal CA1(dCA1).The overexpression of human tau(hTau)in excitatory and PV neurons mimicked AD-like tau accumulation,significantly inhibited neuronal excitability and suppressed distinct discrimination-associated firings of these neurons within *** excitatory and PV neurons in vCA1 at specific rhythms and time windows efficiently ameliorated tau-impaired social ***,1 month of UA administration efficiently decreased tau accumulation via autophagy in a transcription factor EB(TFEB)-dependent manner and restored the vCA1 microcircuit to ameliorate tau-impaired social ***:This study elucidated distinct protein and phosphoprotein networks between dCA1 and vCA1 and highlighted the susceptibility of the vCA1 microcircuit to AD-like tau

关键词： Alzheimer’s disease Tau protein Ventral hippocampus Social memory Ursolic acid Transcription factor EB(TFEB)

A nuclide identification method ofγspectrum and model building based on the transformer

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Nuclear Science and Techniques 2025年第1期36卷 80-93页

作者： Fei Li Chu-Yang Luo Ying-Zi Wen Sheng lv Feng Cheng Guo-Qiang Zeng Jian-Feng Jiang Bing-Hai Li College of Nuclear Technology and Automation Engineering Chengdu University of TechnologyChengdu 610000China Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province Chengdu 610000China Department of Physics Universitat Politècnica de CatalunyaBarcelona 08028Spain Airborne Survey and Remote Sensing Center of Nuclear Industry Shijiazhuang 050000China Hebei Key Laboratory of Airborne Detection and Remote Sensing Technology Shijiazhuang 050000China

In current neural network algorithms for nuclide identification in high-background,poor-resolution detectors,traditional network paradigms including back-propagation networks,convolutional neural networks,recurrent neural networks,etc.,have been limited in research on γ spectrum analysis because of their inherent mathematical *** is difficult to make progress in terms of training data requirements and prediction *** contrast to traditional network paradigms,network models based on the transformer structure have the characteristics of parallel computing,position encoding,and deep stacking,which have enabled good performance in natural language processing tasks in recent ***,in this paper,a transformer-based neural network (TBNN) model is proposed to achieve nuclide identification for the first ***,the Geant4 program was used to generate the basic single-nuclide energy spectrum through Monte Carlo simulations.A multi-nuclide energy spectrum database was established for neural network training using random matrices of γ-ray energy,activity,and *** on the encoder–decoder structure,a network topology based on the transformer was built,transforming the 1024-channel energy spectrum data into a 32×32 energy spectrum sequence as the model *** experiments and adjustments of model parameters,including the learning rate of the TBNN model,number of attention heads,and number of network stacking layers,the overall recognition rate reached 98.7%.Additionally,this database was used for training AI models such as back-propagation networks,convolutional neural networks,residual networks,and long shortterm memory neural networks,with overall recognition rates of 92.8%,95.3%,96.3%,and 96.6%,*** indicates that the TBNN model exhibited better nuclide identification among these AI models,providing an important reference and theoretical basis for the practical application of transformers in the qualitative and quantitativ

关键词： Nuclide identification Neural network Transformer

Homogeneous catalysis and heterogeneous separation: Ionic liquids as recyclable photocatalysts for hydroacylation of olefins

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Chinese Chemical Letters 2025年第2期36卷 417-421页

作者： Hao-Cong Li Ming Zhang Qiyan lv Kai Sun Xiao-Lan Chen Lingbo Qu Bing Yu College of Chemistry School of Life Sciences Zhengzhou University

The photoinduced ligand-to-metal charge transfer （LMCT） process has been extensively investigated,however,the recovery of photocatalysts has remained a persistent challenge in the *** light of this issue,a novel approach involving the development of iron-based ionic liquids as photocatalysts has been pursued for the first time,with the goal of simultaneously facilitating the LMCT process and addressing the issue of photocatalyst ***,the iron-based ionic liquid 1–butyl–3-methylimidazolium tetrachloroferrate （C4mim-Fe Cl4） demonstrates exceptional recyclability and stability for the photocatalytic hydroacylation of *** study will pave the way for new approaches to photocatalytic organic synthesis using ionic liquids as recyclable photocatalysts.

关键词： Heterogeneous separation Homogeneous catalysis Ionic liquids LMCT Recyclable photocatalysts

Ammonium Sensing Patch with Ultrawide Linear Range and Eliminated Interference for Universal Body Fluids Analysis

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Nano-Micro Letters 2025年第4期17卷 332-346页

作者： Mingli Huang Xiaohao Ma Zongze Wu Jirong Li Yuqing Shi Teng Yang Jiarun Xu Shuhan Wang Kongpeng lv Yuanjing Lin School of Microelectronics Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Department of Interventional Radiology Shenzhen People’s HospitalShenzhen 518020People’s Republic of China College of Mechanical and Energy Engineering Shaoyang UniversityShaoyang 422000HunanPeople’s Republic of China Shenzhen Hainwise Medical Technology Co. LTDShenzhen 518118People’s Republic of China Shenzhen Institute for Drug Control(Shenzhen Testing Center of Medical Devices) Shenzhen 518000People’s Republic of China Institute of Innovative Materials Guangming Advanced Research InstituteSouthern University of Science and TechnologyShenzhen 518055People’s Republic of China

Ammonium level in body fluids serves as one of the critical biomarkers for healthcare,especially those relative to liver *** continuous and real-time monitoring in both invasive and noninvasive manners is highly desired,while the ammonium concentrations vary largely in different body ***,the sensing reliability based on ion-selective biosensors can be significantly interfered by potassium *** tackle these challenges,a flexible and biocompatible sensing patch for wireless ammonium level sensing was reported with an ultrawide linear range for universal body fluids including blood,tears,saliva,sweat and *** as-prepared biocompatible sensors deliver a reliable sensitivity of 58.7 mV decade-1 in the range of 1-100 mM and a desirable selectivity coefficient of 0.11 in the interference of potassium ions,attributed to the cross-calibration within the sensors *** sensor’s biocompatibility was validated by the cell growth on the sensor surface(>80%),hemolysis rates(<5%),negligible cellular inflammatory responses and weight changes of the mice with implanted *** biocompatible sensors with ultrawide linear range and desirable selectivity open up new possibility of highly compatible biomarker analysis via different body fluids in versatile approaches.

关键词： Biocompatible sensors Implantable bioelectronics Ammonium sensing Cross-calibration Ultrawide linear range

Preparation and electrochemical properties of Sn/C composites

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Rare Metals 2019年第10期38卷 996-1002页

作者： Bei-Ping Wang rui lv dong-Sheng Lan School of Materials Science and Engineering North Minzu UniversityYinchuan 750021China School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou 510275China

The metal tin(Sn),as one potential anode material for lithium-ion batteries,rapidly degrades its cyclic performance due to huge volume expansion/contraction during lithium intercalation/de-intercalation *** carbon was adopted as conductive and buffer matrix to form Sn/C *** products were prepared by hydrothermal reaction and carbothermal reduction using tin tetrachloride and glucose as raw *** composites were characterized by X-ray diffraction(XRD),Raman spectroscopy,scanning electron microscopy(SEM),transmission electron microscopy(TEM),cyclic voltammetry(CV) and galvanostatic charge/discharge *** results show that relative smaller metallic tin particles in 1:8 Sn/C composite are formed and distributed more uniformly in the carbon *** lithium intercalation capacity of Sn/C composites reaches 820.4 mAh·g-1,and the capacity retention over 60 cycles remains 54.1%.1:8 Sn/C composite exhibits enhanced rate performance and cyclic stability compared to1:5 and 1:10 samples.

关键词： Lithium-ion battery Tin/carbon composite Hydrothermal method Electrochemical performance

Novel titanium vanadate with superior Naþtransport kinetics for rapid charging and low-temperature sodium ion batteries

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Green Energy & Environment 2025年第2期10卷 374-381页

作者： Dan lv Liehao Wei Cheng Wang Mingyue Wang Zhongchao Bai Yameng Fan dongdong Wang Nana Wang Jian Yang Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjin300072China Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinan250100China Tianjin Key Lab of Indoor Air Environmental Quality Control School of Environmental Science and TechnologyTianjin UniversityTianjin300072China Institute for Superconducting and Electronic Materials University of WollongongWollongongAustralia Institute of Energy Materials Science(IEMS) University of Shanghai for Science and Technology516 Jungong RoadShanghai200093China

Sodium-ion batteries(SIBs)hold great promise for large-scale energy storage in the post-lithium-ion battery era due to their high rate performance and long lifespan,although their sluggish Naþtransformation kinetics still require *** by the excellent electrochemical performance of titanium-based anode materials,here,we present a novel titanium vanadate@carbon(TVO@C)material as anode for *** TVO@C material is synthesized via a facile coprecipitation method,with the following annealing process in an acetylene *** opened ion channel and the oxygen vacancies within TVO@C facilitate the diffusion of Naþions,reducing their diffusion ***,an ultrahigh rate of 100 A g^(-1)and long life of 10,000 cycles have been ***,the TVO@C electrode exhibits stable performance,not only at room temperature,but also at temperatures as low as 20 *** TVO@CjjNa_(3)V_(2)(PO_(4))_(3)@C full cells have also achieved stable discharge/charge for 500 *** is believed that this strategy provides new insight into the development of advanced electrodes and provides a new opportunity for constructing novel high rate electrodes.

关键词： Anode High rate Titanium vanadate Sodium ion batteries

Carrier Recombination and Diffusion Dynamics in LiBr Passivated CsPbBr_(3) Perovskite Film with Poly(9-vinylcarbazole)Film Underneath

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Chinese Journal of Chemical Physics 2025年第1期38卷 17-24,I0006-I0018,I0055页

作者： Jianchang lv Ao Liu Yan Wan College of Chemistry Beijing Normal UniversityBeijing 100875China

The performance of cesium lead halide per-ovskite devices is seriously affected by grain boundaries and other charge traps in the poly-crystalline perovskite thin *** doping could effectively passivate defects in CsPbBr_(3) perovskite thin films,but it is still unclear that whether the passivation can help the carriers to diffuse across the grain *** we have studied the carrier recombina-tion and diffusion dynamics in LiBr passivat-ed CsPbBr_(3) perovskite film with poly(9-vinyl-carbazole)(PVK)film underneath by using ultrafast transient absorption spectroscopy and transient absorption *** photoluminescence imaging and transient absorption morphological imaging show that LiBr passivating has made the grain size larger and reduced grain boundaries in CsPbBr_(3) *** transient absorption spectroscopy and time-re-solved photoluminescence data indicate that LiBr passivating has slowed down the bimolecu-lar recombination rate and extended the carrier *** photoexcited hot holes in the perovskite layer would transfer to the PVK layer in the initial 2 *** the transient absorp-tion microscopy measurements reveal that the LiBr passivation can help the carriers to diffuse across the grain boundaries to the surrounding grains in the CsPbBr_(3) perovskite *** carrier diffusion time is around 100 ps when the distance between two grains is~0.9μm.

关键词： Perovskite Carrier diffusion Transient absorption microscopy

Laser-induced phase segregation of inorganic halide perovskite alloy nanowires for optical switch

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Nano Research 2025年第2期18卷 878-886页

作者： Qihang lv Xia Shen Xuyang Li Jianzhe Liu Zhaohui Shan Liantuan Xiao Pengfei Guo Johnny CHo College of Physics and Optoelectronics Taiyuan University of TechnologyTaiyuan 030024China Huangshan Bright Semiconductor Co. Ltd.Huangshan 245021China Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China Institute for Materials Chemistry and Engineering Kyushu UniversityFukuoka 819-0395Japan

Inorganic perovskitenanostructures have attracted considerable attention for their tunable band gaps and excellent optoelectronic *** is inevitable that phase segregation of halide perovskite usually occurs in mixed-halide perovskites under a focused laser llumination,which caused by photo-induced halide-ion ***,we reported an uniform perovskite alloy nanowires via a chemical vapor deposition(CvD)*** characterization reveals that these perovskite nanowires have independent linear morphology_with high-quality ***-photoluminescence(PL)spectra exhibit that these nanowire structures show a dual-wavelength emissions at 690 and 570 nm,***,time-dependent PL intensity of the emission peak at 690 nm increased by the decrease of the emission peak at 570 nm under a focused laser llumination,indicating the formation of phase segregation at the excited ***,based on these as-grown halide perovskite CsPbBr2.52lo.48 nanowires,a reasonably optical switch is designed and *** optical switch may have potential applications in timed blasting system and time-delay circuit in the future.

关键词： perovskite alloy nanowires phase segregation dual-wavelength emission optical switch nanophotonics