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Acta Mechanica Solida Sinica 2019年第6期32卷 785-802页

作者： Xiaofei Li Junhong Guo Tuoya Sun Department of Mechanics Inner Mongolia University of TechnologyHohhot 010051China

The modified couple stress theory has been applied in many nanomaterials except for *** this paper,the modified couple stress theory is firstly adopted to analyze the static bending deformation of multilayered one-dimensional(ID)hexagonal quasicrystal(QC)nanoplates under surface *** general solutions for the extended displacement and traction vectors in a simply supported and homogeneous QC nanoplate are derived by solving an eigenvalue problem reduced from the governing *** the propagator matrix method,the analytical solutions of multilayered ID QC nanoplates are then obtained by assuming that the layer interfaces are *** examples for some kinds of nanoplates made up of QC and crystal(BaTiOa)are provided to illustrate the effects of the material length parameter,the number of layers and the stacking sequence of nanoplates on the phonon and phason fields,which is helpful for the application of QCs to surface coating and solar energy selective absorber.

关键词： Quasicrystals(QCs) nanoplate Layered structure Modified couple stress Analytical solution

Rational design and synthesis of hierarchically structured SnO2 microspheres assembled from hollow porous nanoplates as superior anode materials for lithium-ion batteries

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Nano Research 2018年第3期11卷 1301-1312页

作者： Gi Dae Park Yun Chan Kang Department of Materials Science and Engineering Korea University Anam-Dong Seongbuk-Gu Seoul 136-713 Republic of Korea

Herein, hierarchically structured SnO2 microspheres are designed and synthesized as an efficient anode material for lithium-ion batteries using hollow SnO2 nanoplates. Three-dimensionally ordered macroporous （3-DOM） SnOx-C microspheres synthesized by spray pyrolysis are transformed into hierarchically structured SnO2 microspheres by a two-step post-treatment process. Sulfidation produces hierarchically structured SnS-SnS2-C microspheres comprising tin sulfide nanoplate and carbon building blocks. A subsequent oxidation process produces SnO2 microspheres from hollow SnO2 nanoplate building blocks, which are formed by Kirkendall diffusion. The discharge capacity of the hierarchically structured SnO2 microspheres at a current density of 5 Ag^-1 for the 600th cycle is 404 mA·h·g^-1. The hierarchically structured SnO2 microspheres have reversible discharge capacities of 609 and 158 mA·h·g^-1 at current densities of 0.5 and 30 Ag^-1, respectively. The ultrafine nanosheets contain empty voids that allow excellent lithium-ion storage performance, even at high current densities.

关键词： Kirkendall diffusion nanoplate tin oxide lithium-ion batter spray pyrolysis

Nonlocal vibration and buckling of two-dimensional layered quasicrystal nanoplates embedded in an elastic medium

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Applied Mathematics and Mechanics(English Edition) 2021年第8期42卷 1077-1094页

作者： Tuoya SUN Junhong GUO E.PAN Department of Mechanics Inner Mongolia University of TechnologyHohhot 010051China School of Aeronautics Inner Mongolia University of TechnologyHohhot 010051China College of Engineering Cleveland State UniversityClevelandOhio 44115U.S.A.

A mathematical model for nonlocal vibration and buckling of embedded two-dimensional(2 D) decagonal quasicrystal(QC) layered nanoplates is proposed. The Pasternak-type foundation is used to simulate the interaction between the nanoplates and the elastic medium. The exact solutions of the nonlocal vibration frequency and buckling critical load of the 2 D decagonal QC layered nanoplates are obtained by solving the eigensystem and using the propagator matrix method. The present three-dimensional(3 D) exact solution can predict correctly the nature frequencies and critical loads of the nanoplates as compared with previous thin-plate and medium-thick-plate *** examples are provided to display the effects of the quasiperiodic direction,length-to-width ratio, thickness of the nanoplates, nonlocal parameter, stacking sequence,and medium elasticity on the vibration frequency and critical buckling load of the 2 D decagonal QC nanoplates. The results show that the effects of the quasiperiodic direction on the vibration frequency and critical buckling load depend on the length-to-width ratio of the nanoplates. The thickness of the nanoplate and the elasticity of the surrounding medium can be adjusted for optimal frequency and critical buckling load of the *** feature is useful since the frequency and critical buckling load of the 2 D decagonal QCs as coating materials of plate structures can now be tuned as one desire.

关键词： two-dimensional(2D)quasicrystal(QC) nanoplate vibration buckling elastic medium exact solution

Atomic disorders in layer structured topological insulator SnBi2Te4 nanoplates

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Nano Research 2018年第2期11卷 696-706页

作者： Yi-Chao Zou Zhi-Gang Chen Enze Zhang Fantai Kong Yan Lu Lihua Wang John Drennan Zhongchang Wang Faxian Xiu Kyeongjae Cho Jin Zou Materials Engineering University of Queensland Brisbane Australia Centre for Future Materials University of Southern Queensland Springfield Australia Laboratory of Surface Physics and Department of Physics and Collaborative Innovation Center of Advanced Microstructures Fudan University Shanghai China Department of Materials Science & Engineering the University of Texas at Dallas Richardson USA Beijing Key Lab of Microstructure and Property of Advanced Materials Institute of Microstructure and Properties of Advanced Materials Beijing University of Technology Beijing China Centre for Microscopy and Microanalysis University of Queensland Brisbane Australia WPI Advanced Institute for Materials Research Tohoku University Sendai Japan Quantum Materials Science and Technology Department International Iberian Nanotechnology Laboratory Braga Portugal

Identification of atomic disorders and their subsequent control has proven to be a key issue in predicting, understanding, and enhancing the properties of newly emerging topological insulator materials. Here, we demonstrate direct evidence of the cation antisites in single-crystal SnBi2Te4 nanoplates grown by chemical vapor deposition, through a combination of sub-angstr6m-resolution imaging, quantitative image simulations, and density functional theory calculations. The results of these combined techniques revealed a recognizable amount of cation antisites between Bi and Sn, and energetic calculations revealed that such cation antisites have a low formation energy. The impact of the cation antisites was also investigated by electronic structure calculations together with transport measurement. The topological surface properties of the nanoplates were further probed by angle-dependent magnetotransport, and from the results, we observed a two-dimensional weak antilocalization effect associated with surface carriers. Our approach provides a pathway to identify the antisite defects in ternary chalcogenides and the application potential of SnBi2Te4 nanostructures in next-generation electronic and spintronic devices.

关键词： metal chalcogenide antisite defect nanoplate scanning transmissionelectron microscop3~magnetotransport

Driven self-assembly of hard nanoplates on soft elastic shells

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Chinese Physics B 2015年第11期24卷 569-576页

作者：章尧旸华昀峰邓真渝 Department of Civil Engineering Tsinghua University Department of Physics Zhejiang University

The driven self-assembly behaviors of hard nanoplates on soft elastic shells are investigated by using molecular dynamics （MD） simulation method, and the driven self-assembly structures of adsorbed hard nanoplates depend on the shape of hard nanoplates and the bending energy of soft elastic shells. Three main structures for adsorbed hard nanoplates, including the ordered aggregation structures of hard nanoplates for elastic shells with a moderate bending energy, the collapsed structures for elastic shells with a low bending energy, and the disordered aggregation structures for hard shells, are observed. The self-assembly process of adsorbed hard nanoplates is driven by the surface tension of the elastic shell, and the shape of driven self-assembly structures is determined on the basis of the minimization of the second moment of mass distribution. Meanwhile, the deformations of elastic shells can be controlled by the number of adsorbed rods as well as the length of adsorbed rods. This investigation can help us understand the complexity of the driven self-assembly of hard nanoplates on elastic shells.

关键词： self-assembly nanoplate elastic shell

An analytical study of vibration in functionally graded piezoelectric nanoplates: nonlocal strain gradient theory

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Applied Mathematics and Mechanics(English Edition) 2019年第12期40卷 1723-1740页

作者： Z.SHARIFI R.KHORDAD A.GHARAATI G.FOROZANI Department of Physics Payame Noor UniversityTehran 19395-3697Iran department of physics college of scienceyasouj universityyasouj 75914-353iran

In this paper,we analytically study vibration of functionally graded piezoelectric(FGP)nanoplates based on the nonlocal strain gradient *** top and bottom surfaces of the nanoplate are made of PZT-5H and PZT-4,*** employ Hamilton’s principle and derive the governing differential ***,we use Navier’s solution to obtain the natural frequencies of the FGP *** the first step,we compare our results with the obtained results for the piezoelectric nanoplates in the previous *** the second step,we neglect the piezoelectric effect and compare our results with those obtained for the functionally graded(FG)***,the effects of the FG power index,the nonlocal parameter,the aspect ratio,and the lengthto-thickness ratio,and the nanoplate shape on natural frequencies are investigated.

关键词： nonlocal strain gradient nanoplate functionally graded piezoelectric(FGP)

Facile Synthesis and Catalytic Properties of β-Co(OH)_2 and Mg(OH)_2 nanoplates

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Chemical Research in Chinese Universities 2007年第5期23卷 508-510页

作者： SUN Ling-na WANG Ke-li LUO Sheng-jun GUO Qing-rong HU Chang-wen Institute for Chemical Physics Department of Chemistry State Key Laboratory of Explosion Science and Technology Beijin Institute of Technology Belting 100081 P. R. China Biological Engineering Department Jilin Vocational Technology College in Agriculture Engineering Gongzhuling 136100 P. R. China

β-Co（OH）2 and Mg（OH）2 nanoplates were synthesized via a facile template-free hydrothermal *** different conditions of preparation and catalytic properties of the products were studied and *** products were characterized by X-ray diffraction,transmission electron microscopy,scanning electron microscopy,selected area electron diffraction（SAED）,and gas chromatograph.

关键词： nanoplate Catalytic property β-Co (OH) 2 Mg(OH) 2

Hydrothermal synthesis of ultrathin Bi2MO6（M=W,Mo） nanoplates as new host substances for red-emitting europium ion

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Progress in Natural Science:Materials International 2012年第4期22卷 334-340页

作者： Mingyun Guan Xianghong He Tongming Shang Jianhua Sun Quanfa Zhou Jiangsu Key Laboratory of Precious Metals Chemistry School of Chemistry and Environmental EngineeringJiangsu Teachers University of Technology

Ultrathin Bi2MO6(M=W, Mo) nanoplates were synthesized by a simple hydrothermal method. SEM, EDS and XRD were used to investigate the morphologies and compositions of the samples from BiONO3 nanoplates along with some nanoparticles, to precursory Bi2WO6 nanoplates and Bi2MoO6 nanoparticles, and to final Bi2MO6 nanoplates. The possible formation mechanism of products was proposed. The experimental results exhibited that Bi2MO6 nanoplates had stronger light adsorption in ultraviolet-visible range. Bi2MO6 nanoplates were useful host for rare earth ions, Eu3t was successfully doped in Bi2MO6 nanoplates and an energy efficiently transferred from Bi3t to Eu3t , displaying intense red color under ultraviolet (UV) light excitation. The morphologies of products kept constant after doping. It is suggested that Bi2MO6:Eu nanoplates have promising application in fluorescent mark.

关键词： nanoplate Bismuth tungstate and molybdate Fluorescence properties

Synthesis and optical properties of triangular gold nanoplates with controllable edge length

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Science China Chemistry 2010年第9期53卷 2033-2038页

作者： SUN JianHua1,2,GUAN MingYun2,SHANG TongMing2,GAO CuiLing1 & XU Zheng1 1State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China 2Jiangsu Key Laboratory of Precious Metals Chemistry,Jiangsu Teachers’ University of Technology,Changzhou 213001,China State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing China Jiangsu Key Laboratory of Precious Metals Chemistry Jiangsu Teachers’ University of Technology Changzhou China

Gold triangular nanoplates with a uniform size were synthesized by a simple seeds-growth method in a lamellar lyotropic liquid crystal(LLC) medium consisting of F127,n-C4H9OH and *** edge length of gold nanoplates can be adjusted from tens to several hundreds nanometers(and even a few micrometers) by varying the concentration of Au3+ and the seeds solution *** optical properties of the synthesized gold nanoplates were *** vis-NIR spectra of the synthesized gold nanoplates exhibited a good linear correlation between the in-plane plasmon resonance λmax and the average edge length of the corresponding nanoplates.

关键词： gold nanoplate lamellar LLC optical property

Performance of Methanol-to-Olefins Catalytic Reactions by the Addition of PEG in the Synthesis of SAPO-34

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天津大学学报：英文版 2017年第6期23卷 501-510页

作者： Yaquan Wang Zhao Wang Chao Sun Hengbao Chen Hongyao Li Haoyang Li Key Laboratory for Green Chemical Technology of the Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

SAPO-34, a silicoaluminophosphate zeolite, has been synthesized by the hydrothermal method with the addition of different molecular weights of polyethylene glycol(PEG), and has been characterized with XRD, SEM,N_2 adsorption–desorption, FT-IR, and NH_3 temperatureprogrammed desorption(NH_3-TPD). We studied SAPO-34 as a catalyst in the methanol-to-olefins(MTO) reaction, in a fixed-bed reactor. The results show that the chain length of PEG has a great influence on the particle size and morphology of SAPO-34. PEG acts as inhibitor in the crystallization process. With the increase of the chain length of PEG used in the synthesis, from a relative molecular weight of 400-6000, the morphology of SAPO-34 changes gradually from cubic to nanoplate-like and then changes to cubic again. The particle size decreases markedly at first and then increases to some extent. The catalytic stability in the MTO reaction also increases first and then decreases, with all the catalysts having almost the same selectivity to olefins. When the sample is synthesized with PEG800, the particles become nanoplate-like with a thickness of 46 nm on average, and the catalytic stability is appreciably prolonged, which is attributed to the shorter diffusion paths of the reactants in the zeolite.

关键词： SAPO-34 Polyethylene glycol Chain length Particle size nanoplate Methanol-to-olefins