检索结果-南通市图书馆

Nano Research 2015年第12期8卷 3815-3822页

作者： Lingxiao Wang Jing geng Wenhai Wang Chao Yuan Long Kuai baoyou geng College of Chemistry and Materials Science The Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratoryof Molecular-Based Materials Center for Nano Science and Technology Anhui Normal University No. 1 Beijing East Road Wuhu 241000 China

The sluggish oxygen evolution reaction （OER） is an important half-reaction of the electrochemical water-splitting reaction. Amorphous Fe/Ni composite oxides have high activity. In this work, we modified the aerosol spray-assisted approach and obtained amorphous Fe-Ni-Ox solid-solution nanoparticles （Fe-Ni-Ox-NPs） approximately 20 nm in size by choosing iron/nickel acetylacetonates as raw materials instead of inorganic salts. The small-sized Fe-Ni-Ox-NPs were characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray diffraction （XRD） analysis, energy-dispersive X-ray spectroscopy （EDX）, and X-ray photoelectron spectroscopy （XPS）. Furthermore, an investigation of electrochemical OER performance suggests that the small-sized Fe-Ni-Ox-NPs have higher activity than the large-sized Fe-Ni-Ox-MPs. A small overpotential of 0.315 V was demanded to obtain a working current density of 50 mA/cm2, and the Tafel slope was as low as 38 mWdec.

关键词： Fe-Ni-Ox solid solution electrocatalysis oxygen evolution reaction

Open N-doped carbon coated porous molybdenum phosphide nanorods for synergistic catalytic hydrogen evolution reaction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2022年第3期15卷 1824-1830页

作者： Chao Wang Wen Li Xiaodan Wang Nan Yu Hongxia Sun baoyou geng College of Chemistry and Materials Science The key Laboratory of Functional Molecular SolidsMinistry of EducationThe Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education InstitutesAnhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage MaterialsAnhui Normal UniversityWuhu 241002China Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China

Molybdenum phosphide is a potential hydrogen evolution reaction(HER)***,traditional high-temperature phosphating preparation methods are prone to damage of material morphology and *** the carbon skeleton to limit the size and morphology of MoP and to improve the conductivity of the material is an effective method to improve the performance of the ***,there is a lack of research on the effect of carbon skeleton and MoP composite structure on the catalytic mechanism of *** coated ZIF-8 on the surface of MoP nanorods,and obtained open N-doped carbon-coated porous MoP nanorods(N/C/MoP)through carbonization and *** have shown that the ZIF-8 coating effectively limits the size and morphology of the material and avoids *** alkaline conditions,N/C/MoP has a low overpotential of 169 mV for HER at 10 mA/cm2,which is 55 mV lower than MoP without a carbon *** the same time,its Tafel slope(51.3 mV/dec)is smaller than Pt/C(59.9 mV/dec),and it has good *** functional theory(DFT)studies have shown that under alkaline conditions,there is a synergistic effect between the open N-doped carbon layer and the exposed MoP active surface,which reduces the activation energy of water and improves the catalytic performance of *** is worth noting that a tight coating will hinder the exposure of active sites and reduce catalytic activity.

关键词： MoP hydrogen evolution reaction(HER) carbon composite synergistic effect

Vesicular Li3V2(PO4)3/C hollow mesoporous microspheres as an efficient cathode material for lithium-ion batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2019年第8期12卷 1937-1942页

作者： Hongxia Sun Haoran Du Mengkang Yu Kuangfu Huang Nan Yu baoyou geng College of Chemistry and Materials Science Anhui Key Laboratory of Functional Molecular SolidsMinistry of EducationThe Key Laboratory oj Electrochemical Clean Energy of Anhui Higher Education InstitutesAnhui Normal UniversityNO. 189 South Jiuhua RoadWuhu 241002China

Vesicular lithium vanadium phosphate/carbon hollow mesoporous microspheres were fabricated using a facile polyvinylpyrrolidone-assisted aerosol-spray-assisted method and subsequent heat-treatment. While changing the content of polyvinylpyrrolidone, we found that carbon content was adjustable on the surface of lithium vanadium phosphate. By optimizing the carbon content among the composites, the electrochemical performance can be enhanced significantly. The results of electrochemical performance tests suggested that the samples exhibited good cycle performance and high discharge capability in the voltages between 3.0-4.8 V. The observed excellent electrochemical performances could be attributed to the proper content of carbon coating and the vesicular hollow mesoporous microsphere structure, increasing the transmission rate of lithium ions and reducing the structural change during charging and discharging effectively.

关键词： U3V2(PO4)3 aerosol-spray-assisted approach polyvinylpyrrolidone vesicular hollow microsphere electrochemical properties

In-situ electrochemical restructuring of Cu_(2)BiS_(x)solid solution into Bi/Cu_(x)S_(y)heterointerfaces enabling stabilization intermediates for high-performance CO_(2)electroreduction to formate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2023年第5期16卷 7974-7981页

作者： Xiaofeng Yang Qinru Wang Feiran Chen Hu Zang Changjiang Liu Nan Yu baoyou geng College of Chemistry and Materials Science the Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education InstitutesAnhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage MaterialsAnhui Normal UniversityWuhu 241002China Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China

Bismuth-based materials are prevalent catalysts for CO_(2)electroreduction to formate,enduring high hydrogen evolution reactions and inadequate activity and ***,we reveal that in-situ electrochemical transformation of Cu_(2)BiS_(x)solid solution into Bi/Cu_(x)S_(y)heterointerfaces,which can stabilize the intermediates and achieve highly selective and consistent CO_(2)*** shows over 85%Faraday efficiency(FE)of formate with a potential window of−0.8 to−1.2 VRHE(RHE:reversible hydrogen electrode)and a stability above 90%over 27 h in H-type cell at−0.9 *** maintains more than 85%of FEformate at the current density of−25 to−200 mA·cm^(−2),has stability of about 80%of FEformate at least 10 h at−150 mA·cm^(−2)in flow ***-situ Fourier transform infrared(FT-IR)spectroscopy measurement confirms that the preferred route of catalytic reaction is to generate *CO_(2)^(−) and *OCHO *** density functional theory(DFT)calculations illustrate that heterointerfaces facilitate the prior process of CO_(2)to HCOOH through *OCHO by additional Bi hybrid *** study is expected to open up a new idea for the design of CO_(2)electroreduction catalyst.

关键词： in-situ electrochemical restructuring heterointerfaces CO_(2)electroreduction formate current density

Gas template-assisted spray pyrolysis： A facile strategy to produce porous hollow Co3O4 with tunable porosity for high-performance lithium-ion battery anode materials

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2018年第3期11卷 1490-1499页

作者： Haoran Du Kuangfu Huang Min Li Yuanyuan Xia Yixuan Sun Mengkang Yu baoyou geng College of Chemistry and Materials Science Anhui Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecular-Based Materials Center for Nano-Science and Technology Anhui Normal University Wuhu 241000 China

Porous hollow Co3O4 microspheres have been synthesized from a mixed cobalt nitrate and urea solution through spray pyrolysis followed by calcination at 600 ℃ in air. This porous hollow Co3O4 is assembled by nanoparticles and exhibits variable porosity depending on the amount of gas in the system. In pyrolysis process, urea continuously decomposes into gaseous components, which act as a template to control the porous structure. The amount of gas escaping from precursor droplets can directly influence the porosity of the microspheres and the size of the nanoparticles controlled by the ratio of urea to cobalt nitrate. Electrochemical measurements show that the performance of the porous hollow Co3O4 microspheres is related to the porosity and size of the nanopartides. The sample with optimal porosity delivers a high first charge capacity of 1,417.9 mAh·g^-1 at 0.2C （1C = 890 mA·g^-1）, and superior charge cycle performance of 1,012.7 mAh.g-1 after 100 cycles. In addition, the optimized material displays satisfactory rate performance of 1,012.4 mAh.g-1 at 1C after 50 cycles and 881.3 mAh·g^-1 at 2C after 300 cycles. Superior charge/discharge capacity, excellent rate performance and high yield achieved in this study is promising for the development of high-performance Co3O4 anode materials for lithium-ion batteries.

关键词： Co3O4/gas template tunable porosity spray pyrolysis anode lithium-ion batteries

Synchronous constructing ion channels and confined space of Co_(3)O_(4) anode for high-performance lithium-ion batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2022年第7期15卷 6192-6199页

作者： Yan Zhou Chao Wang Feiran Chen Tingjuan Wang Yaoyao Ni Hongxia Sun Nan Yu baoyou geng College of Chemistry and Materials Science The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education InstitutesAnhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage MaterialsAnhui Normal UniversityWuhu 241002China Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China

The yolk–shell structure has a unique advantage in lithium-ion batteries applications due to its ability to effectively buffer the volume expansion of the lithiation/delithiation ***,its development is limited by the low contact point between the core and ***,we propose a general strategy of simultaneous construction of sufficient reserved space and multicontinuous active channels by pyrolysis of two carbon substrates.A double-shell structure consisting of Co_(3)O_(4) anchored to hollow carbon sphere and external self-supporting zeolitic imidazolate framework(ZIF)layer was constructed by spray pyrolysis and additional carbon coating in-situ *** the process of high-temperature calcination,the carbon and nitrogen layers between the shells separate,creating additional space,while the Co_(3)O_(4) particles between the shells remain are still in close contact to form continuous and fast electron conduction channels,which can realize better charge *** to the synergy of these design principles,the material has ultra-high initial discharge capacities of 2,183.1 mAh·g^(−1) at 0.2 A·g^(−1) with capacity of 1,121.36 mAh·g^(−1) after 250 cycles,the long-term capacities retention rate is about 92.4%after 700 cycles at 1 A·g^(−1).This unique channel-type double-shell structure fights a way out to prepare novel electrode materials with high performance.

关键词： double-shell structure ion channels confined space lithium-ion batteries Co_(3)O_(4)

Construction of hollow mesoporous ZnMn2O4/C microspheres with carbon nanotubes embedded in shells for high-performance aqueous zinc ions batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2023年第1期16卷 1726-1732页

作者： Feiran Chen Qinru Wang Xiaofeng Yang Chao Wang Hu Zang Yingwen Tang Tao Li baoyou geng College of Chemistry and Materials Science the Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education InstitutesAnhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage MaterialsAnhui Normal UniversityWuhu 241002China College of Physics and Information Engineering Minnan Normal UniversityZhangzhou 363000China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 100029China Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China

Recently,rechargeable zinc-ion batteries have been considered as the future development direction of large-scale energy storage due to their low price,safety,environmental friendliness,and excellent electrochemical ***,highcapacity,long-cycle stable cathode materials that can meet the demand are still to be ***,the hollow mesoporous ZnMn2O4/C microsphere cathode material with carbon nanotubes embedded in the shell was prepared by spray pyrolysis for the first *** capacity remained at 209.71 mAh·g−1 after 150 cycles at a rate of 0.5 A·g−1,and still maintained a specific capacity of 100.06 mAh·g−1 at a rate of 1 A·g−1 after 1,000 *** outstanding performance is attributed to the hollow structure that can effectively buffer large volume changes caused by ion intercalation and deintercalation,excellent porosity,cationic defects,and high electrical conductivity of carbon nanotubes and its strong adsorption to ZnMn2O4 nanoparticles.

关键词： mesoporous hollow microspheres carbon nanotubes zinc-ion battery ZnMn2O4

Dispersion and support dictated properties and activities of Pt/metal oxide catalysts in heterogeneous CO oxidation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2021年第12期14卷 4841-4847页

作者： Jiaojiao Song Yixuan Yang Shoujie Liu Lei Li Nan Yu Yuteng Fan Zhiming Chen Long Kuai baoyou geng School of Chemical and Environmental Engineering Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and ApplicationAnhui Laboratory of Clean Catalytic EngineeringAnhui Laboratory of Clean Energy Materials and Chemistry for Sustainable Conversion of Natural ResourcesAnhui Polytechnic UniversityWuhu241000China College of Chemistry and Materials Science The key Laboratory of Functional Molecular SolidsMinistry of Educationthe Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education InstitutesAnhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage MaterialsAnhui Normal UniversityWuhu241002China Chemistry and Chemical Engineering of Guangdong Laboratory Shantou515063China Chongqing Key Laboratory of Extraordinary Coordination Bond and Advanced Materials Techniques Yangtze Normal UniversityChongqing408100China

The source of activity of metal/metal oxides has always been an interesting,important but highly challenging research topic in heterogeneous *** CO oxidation reaction,this work clarifies dispersion and support dictated activities of Pt including single-atom(Pt1),2.8 nm(PtNP-S)and 36 nm(PtNP-L)Pt supported on both reducible TiO_(2) and“inert”Al_(2)O_(3) *** X-ray absorption fine structure(XAFS)shows that chemical state of Pt is affected by both dispersion and support:Pt1 presents fully oxidized state in both Pt1/TiO_(2) and Pt1/Al_(2)O_(3);PtNP-S in PtNP-S/TiO_(2) appear nearly oxidized state while about half of Pt is metallic state in PtNP-S/Al_(2)O_(3);PtNP-L in both PtNP-L/TiO_(2) and PtNP-L/Al_(2)O_(3) exhibit metallic *** the Pt species supported on TiO_(2) present much lower apparent activation barriers(Eapp)than that on Al_(2)O_(3).Moreover,Pt1/TiO_(2) possesses dozen times of efficiency than PtNP-S/TiO_(2) although they have similar Eapp values.A truth is finally made clear that a reducible metal oxide with low oxygen vacancy formation energy is critical to endow Pt/metal oxide a high activity and the single-atom dispersion of Pt is the way to maximize the active sites of Pt/metal oxide.

关键词： nano catalysis single-atom catalysis platinum dispersion CO oxidation

A promising approach for quantifying focal stroke modeling and assessing stroke progression:optical resolution photoacoustic microscopy photothrombosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第7期20卷 2029-2037页

作者： Xiao Liang Xingping Quan Xiaorui geng Yujing Huang Yonghua Zhao Lei Xi Zhen Yuan Ping Wang Bin Liu Faculty of Health Sciences University of MacaoMacao Special Administrative RegionChina Center for Cognitive and Brain Sciences University of MacaoMacao Special Administrative RegionChina Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Emergency Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

To investigate the mechanisms underlying the onset and progression of ischemic stroke,some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral ***,these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied,although ischemic stroke is strongly *** this study,we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed *** observed the molding process in mice of different ages and presented age-dependent vascular embolism ***,we integrated optical coherence tomography angiography to investigate age-associated trends in cerebrovascular variability following a *** imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages,thereby highlighting the technique's potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

关键词： age-dependent cerebral cortex ischemic stroke mouse model optical coherence tomography angiography photoacoustic microscopy photothrombosis vascular imaging

Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第2期20卷 326-342页

作者： Yi Ji Chaoyi Yang Xuerui Pang Yibing Yan Yue Wu Zhi geng Wenjie Hu Panpan Hu Xingqi Wu Kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity