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18篇 您的检索式:作者名="XIE Zhaoxiong"
    题名 作者 年代 出处 被引量
1Synthesis of Pd Nanocrystals Enclosed by {100} Facets and with Sizes 〈10 nm for Application in CO Oxidation显示文摘Mingshang Jin Hongyang Liu Hui Zhang Zhaoxiong Xie Jingyue Liu Younan Xia 2011Nano Research2011,4,1:24
2Novel hydrogen storage properties of palladium nanocrystals activated by a pentagonal cyclic twinned structure显示文摘研究人员们看起来忽视了雏晶的一种特殊形式,五角的周期的 twinning,明显的二维的格子扩大在存在导致新奇 physicalchemical 性质在几何、电子的结构与变化联系了。在 Pd nanocrystals 把氢的存储和版本用作一根探针,我们发现了五角的周期的孪生的 Pd nanocrystals 有的那 icosahedral 不同的氢存储性质由于二维的格子扩大,与那些相当不同八面的单个水晶的对应物。另外,在五角的周期的孪生的 Pd nanocrystals 的二维的格子扩大在电子结构引起一个变化,它导致在 PdH x 五角的周期的孪生的 nanocrystals。Huang Huang Shixiong Bao Qiaoli Chen Yanan Yang Zhiyuan Jiang Qin Kuang Xiaoyin Wu Zhaoxiong Xie Lansun Zheng 2015Nano Research2015,8,8:7
3A facile surfactant-free synthesis of Rh flower-like nanostructures constructed from ultrathin nanosheets and their enhanced catalytic properties显示文摘Rh 是广泛地在许多器官的反应被使用的重要催化剂。在最近的年里,许多努力集中了于由与控制尺寸和形态学制作催化剂 nanoparticles 改进它的催化效率。然而,也把有机化合物用作反应媒介或盖住代理人的经常采用的合成线路经常在催化剂表面上导致剩余分子,它急速地接着减少催化表演。此处,我们报导甲醛经由 Rh (acac )3 的热水的减小获得的新奇 Rh 象花的结构的灵巧的、水的、没有表面活化剂的合成。唯一的 Rh nanoflowers 从 ultrathin nanosheets 被构造,其基础表面包括了 { 111 } 有 ~ 的平均厚度的方面 1.1 nm。特定的表面区域由公司脱衣测量了 79.3 是 m 2 钟声到 134.4 食火鸟的浸透的磁化 ???? 愠汬祯湩吗??Yaqi Jiang Jingyun Su Yanan Yang Yanyan Jia Qiaoli Chen Zhaoxiong Xie Lansun Zheng 2016Nano Research2016,9,3:7
4A simple solvothermal route towards the morphological control of ZnO and tuning of its optical and photocatalytic properties显示文摘ZnO nanoparticles with different morphologies were solvothermally synthesized by controlling the alkali (sodium hydroxide) concentration in an isopropanol solution.The products were characterized by means of powder X-ray diffraction,UV-visible absorption spectra,scanning electron microscopy,transmission electron microscopy,and selected area electron diffraction.The morphologies of the formed ZnO nanocrystals were dependent on the concentration of the alkali,and with increases of sodium hydroxide concentration,the ZnO nanocrystals evolved from rod to hexagonal bipyramid,and then to a flower-like nanostructure.The flower-like nanostructure resulted from the etching of the hexagonal bipyramid by the excess alkali.The photoluminescence and photocatalytic properties of the prepared ZnO were investigated.The difference of green emission among the ZnO nanocrystals indicated that a higher sodium hydroxide concentration led to a higher level of defects.The size,the surface structure and defects in the ZnO nanocrystals affected its photo-degradation characteristics.JIANG YaQi,LI FangFang,SUN Ran,XIE ZhaoXiong & ZHENG LanSun State Key Laboratory for Physical Chemistry of Solid Surfaces Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China 2010Science China Chemistry2010,53,8:3
5One-step synthesis of thermally stable artificial multienzyme cascade system for efficient enzymatic electrochemical detection显示文摘Recently,metal-organic framework(MOF)-based multienzyme systems integrating different functional natural enzymes and/or nanomaterial-basedartificial enzymes are attracting increasing attention due to their high catalytic efficiency and promising application in sensing.Simpleand controllable integration of enzymes or nanozymes within MOFs is crucial for achieving efficient cascade catalysis and high stability.Here,we report a facile electrochemical assisted biomimetic mineralization strategy to prepare an artificial multienzyme system for efficient electrochemicaldetection of biomolecules.By using the G0x@Cu-MOF/copper foam(G0x@Cu-MOF/CF)architecture as a proof of concept,efficientenzyme immobilization and cascade catalysis were achieved by in situ encapsulation of glucose oxidase(GOx)within MOFs layer grown onthree-dimensional(3D)porous conducting CF via a facile one-step electrochemical assisted biomimetic mineralization strategy.Due to thebio-electrocatalytic cascade reaction mechanism,this well-designed GOx@Cu-MOF modified electrode exhibited superior catalytic activityand thermal stability for glucose sensing.Notably,the activity of GOx@Cu-MOF/CF still remained at ca.80%after being incubated at 80℃.In sharp contrast,the activity of the unprotected electrode was reduced to the original 10%after the same treatment.The design strategypresented here may be useful in fabricating highly stable enzyme@MOF composites applied for efficient photothermal therapy and otherplatform under high temperature.Xiqing Cheng Jinhong Zhou Jiayu Chen Zhaoxiong Xie Qin Kuang Lansun Zheng 2019Nano Research2019,12,12:3
6Surfactant dependent evolution of Au-Pd alloy nanocrystals from trisoctahedron to excavated rhombic dodecahedron and multipod: a matter of crystal growth kinetics显示文摘In wet chemical syntheses of noble metal nanocrystals,surfactants play crucial roles in regulating their morphology.To date,more attention has been paid to the effect of the surfactant on the surface energy of crystal facets,while less attention has been paid to its effect on the growth kinetics.In this paper,using the growth of Au-Pd alloy nanocrystals as an example,we demonstrate that different concentration of surfactant hexadecyltrimethyl ammonium chloride(CTAC)may cause the different packing density of CTA+bilayers on different sites(face,edge or vertex)of crystallite surface,which would change the crystal growth kinetics and result in preferential crystal growth along the edge or vertex of crystallites.The unique shape evolution from trisoctahedron to excavated rhombic dodecahedron and multipod structure for Au-Pd alloy nanocrystals was successfully achieved by simply adjusting the concentration of CTAC.These results help to understand the effect of surfactants on the shape evolution of nanocrystals and open up avenues to the rational synthesis of nanocrystals with the thermodynamically unfavorable morphologies.Qiaoli Chen Guifen Du Yongdi Dong Zhenming Cao Zhaoxiong Xie Lansun Zheng 2017Science Bulletin2017,62,20:2
7Synthesis and High Electrocatalytic Performance of Hexagram Shaped Gold Particles Having an Open Surface Structure with Kinks显示文摘塑造的金粒子和他们的类似物与性变态由高索引方面围住的六芒星形被与维生素酸(AA ) 减少 HAuCl4 面对成功地综合了 poly (diallyldimethylammonium 氯化物) 在房间温度。由使用电子显微镜学,塑造的 Au 粒子被发现是的六芒星形的表面 { 541 } 飞机,它包含高密度的步和性变态。另外,它被发现那六角形像盾并且在产品在场的其它种粒子是塑造的 Au 粒子组织的六芒星形的类似物,在那,他们有一样的表面结构。以便证实所有准备粒子的表面结构,表面结构 Pb 的敏感 underpotential 免职被执行,并且周期的 voltammetric 侧面根据求婚 { 541 } 表面。最后, Au 六芒星形的结构性质关系被作为探查反应采用 AA 的 electrocatalytic 氧化试验性地分析。金立方体与的 electrocatalytic 反应低索引 { 100 } 方面和金 trioctahedra 与 { 221 } 方面作为参考书被学习。试验性的结果证明六芒星形塑造了 Au 粒子和他们的类似物与暴露 { 541 } 方面在三种金粒子之中举办最高催化的活动,由于纽结原子的高密度。这研究应该激发我们进一步为高索引表面围住的另外的明确的多面的金属 nanocrystals 的准备探索方法。Qingning Jiang Zhiyuan Jiang Lei Zhang Haixin Lin Ning Yang Huan Li Deyu Liu Zhaoxiong Xie Zhongqun Tian 2011Nano Research2011,4,6:2
8Room-temperature conversion of ethane and the mechanism understanding over single iron atoms confined in graphene显示文摘The catalytic conversion of ethane to high value-added chemicals is significantly important for utilization of hydrocarbon resources.However, it is a great challenge due to the typically required high temperature(> 400 ℃) conditions.Herein, a highly active catalytic conversion process of ethane at room temperature(25 ℃) is reported on single iron atoms confined in graphene via the porphyrin-like N4-coordination structures.Combining with the operando time of flight mass spectrometer and density functional theory calculations, the reaction is identified as a radical mechanism, in which the C–H bonds of the same C atom are preferentially and sequentially activated, generating the value-added C2 chemicals, simultaneously avoiding the over-oxidation of the products to CO2.The in-situ formed O–FeN4–O structure at the single iron atom serves as the active center for the reaction and facilitates the formation of ethyl radicals.This work deepens the understanding of alkane C–H activation on the FeN4 center and provides the reference in development of efficient catalyst for selective oxidation of light alkane.Suheng Wang Haobo Li Mengqi He Xiaoju Cui Lei Hua Haiyang Li Jianping Xiao Liang Yu N.Pethan Rajan Zhaoxiong Xie Dehui Deng 2019Journal of Energy Chemistry2019,28,9:1
9Molten salt route toward the growth of ZnO nanowires in unusual growth directions 显示文摘JIANG Zhiyuan XU Tao XIE Zhaoxiong 2005J Phys Chem B2005,109,23:1
10Conversion of Se nanowires to Se/Ag2Se nanocables and Ag2Se nanotubes显示文摘Zhiyuan Jiang Zhaoxiong Xie 2003Chemical Physics Letters2003,378,:1
11Morphologyevolution of NaTa03 submicrometer singlcrystals:from cubes to quasi-spheres 显示文摘CHEN Wei KUANG Qin XIE Zhaoxiong 2015Science China Materials2015,58,:1
12Fabrication of large-scale one-dimensional Au nanochain and nanowire networks by interfacial self-assembly显示文摘Wang Minhua Li Yongjun Xie Zhaoxiong 0,,1:1
13Origin of symmetry breaking in the seed-mediated growth of bi-metal nano-heterostructures显示文摘Seed-mediated growth is the most general way to controllably synthesize bimetal nano-heterostructures.Despite successful instances through trial and error were reported, the way for second metal depositing on the seed, namely whether the symmetry of resulted nano-heterostructure follows the original crystal symmetry of seed metal, remains an unpredictable issue to date. In this work, we propose that the thermodynamic factor, i.e., the difference of equilibrium electrochemical potentials(corresponding to their Fermi levels) of two metals in the growth solution, plays a key role for the symmetry breaking of bimetal nano-heterostructures during the seed-mediated growth. As a proof-of-principle experiment, by reversing the relative position of Fermi levels of the Pd nanocube seeds and the second metal Au with changing the concentration of reductant(L-ascorbic acid) in the growth solution, the structure of as-prepared products successfully evolved from centrosymmetric Pd@Au core-shell trisoctahedra to asymmetric Pd-Au hetero-dimers. The idea was further demonstrated by the growth of Ag on the Pd seeds. The present work intends to reveal the origin of symmetry breaking in the seed-mediated growth of nano-heterostructures from the viewpoint of thermodynamics, and these new insights will in turn help to achieve rational construction of bimetal nano-heterostructures with specific functions.Guifen Du Jun Pei Zhiyuan Jiang Qiaoli Chen Zhenming Cao Qin Kuang Zhaoxiong Xie Lansun Zheng 2018Science Bulletin2018,63,14:1
14Fabrication of large-scale one-dimensional Au nanochainand nanowire networks by interfacial self-assembly显示文摘Wang Minhua Li Yongjun Xie Zhaoxiong 2010Materials Chemistry and Physics2010,119,:1
15Advances in microwave absorbing materials with broad-bandwidth response显示文摘Microwave absorbing materials(MAMs)are playing an increasingly essential role in the development of wireless communications,high-power electronic devices,and advanced target detection technology.MAMs with a broad-bandwidth response are particularly important in the area of communication security,radiation prevention,electronic reliability,and military stealth.Although considerable progress has been made in the design and preparation of MAMs with a broad-bandwidth response,a number of challenges still remain,and the structure–function relationship of MAMs is still far from being completely understood.Herein,the advances in the design and research of MAMs with a broad-bandwidth response are outlined.The main strategies for expanding the effective absorption bandwidth of MAMs are comprehensively summarized considering three perspectives:the chemical combination strategy,morphological control strategy,and macrostructure control strategy.Several important results as well as design principles and absorption mechanisms are highlighted.A coherent explanation detailing the influence of the chemical composition and structure of various materials on the microwave absorption properties of MAMs is provided.The main challenges,new opportunities,and future perspectives in this promising field are also presented.Susu Bao Meixi Zhang Zhiyuan Jiang Zhaoxiong Xie Lansun Zheng 2023Nano Research2023,16,8:1
16Solvent-dependent evolution of cyclic penta-twinned rhodium icosahedral nanocrystals and their enhanced catalytic properties显示文摘由于他们的唯一的几何、电子的结构答应性质的周期的 penta 孪生的高贵金属 nanocrystals 展览。然而,周期的 penta 孪生的 nanostructures 的控制合成,特别有一个高连贯的精力的高贵金属(例如, Rh ) ,是很困难的,并且相应生长机制充分没被理解。此处,我们报导一个灵巧的一个壶为周期的 penta 孪生的 Rh icosahedral nanocrystals 的合成的热水的途径。它除了调整表面被发现那由改变盖住的代理人的集中或范畴的免费精力,溶剂可能在 Rh 水晶表面上影响表面活化剂的吸附能力,它在表面导致一个变化免费精力并且因此允许 Rh 周期的penta孪生的 nanostructures 的形成。另外由于他们的唯一的电子、几何的结构, Rh icosahedral nanocrystals 作为与单个水晶的 Rh 有四面的 nanocrystals 和商业 Rh 黑色相比为乙醇的 electrooxidation 展出优异催化活动和稳定性。Yanan Yang Jiawei Zhang Yajing Wei Qiaoli Chen Zhenming Cao Huiqi Li Jiayu Chen Jueli Shi Zhaoxiong Xie Lansun Zheng 2018Nano Research2018,11,2:0
17N-doped carbon shell encapsulated PtZn intermetallic nanopartides as highly efficient catalysts for fuel cells显示文摘The high cost and poor durability of Pt nanoparticles(NPs)have always been great challenges to the commercialization of proton exchange membrane fuel cells(PEMFCs).Pt-based intermetallic NPs with a highly ordered structure are considered as promising catalysts for PEMFCs due to their high catalytic activity and stability.Here,we reported a facile method to synthesize N-doped carbon encapsulated PtZn intermetallic(PtZn@NC)NPs via the pyrolysis of Pt@Zn-based zeolitic imidazolate framework-8(Pt@ZIF-8)composites.The catalyst obtained at 800℃(10%-PtZn@NC-800)was found to exhibit a half-wave potential(Ev2)up to 0.912 V versus reversible hydrogen electrode(RHE)for the cathodic oxygen reduction reaction in an acidic medium,which shifted by 26 mV positively compared to the benchmark Pt/C catalyst.Besides,the mass activity and specific activity of 10%-PtZn@NC-800 at 0.9 V versus RHE were nearly 3 and 5 times as great as that of commercial Pt/C,respectively.It is worth noting that the PtZn@NC showed excel Ient stability in oxygen reducti on reacti on(ORR)with just 1 mV of the Ev2 loss after 5,000 cycles,which is superior to that of most reported PtM catalysts(especially those disordered solid solutions).Furthermore,such N-doped carb on shell encapsulated PtZn intermetallic NPs showed significa ntly enha need performances towards the anodic oxidation reaction of organic small molecules(such as methanol and formic acid).The synergistic effects of the N doped carbon encapsulation structure and intermetallic NPs are responsible for outstanding performances of the catalysts.This work provides us a new engineering strategy to acquire highly active and stable multifunctional catalysts for PEMFCs.Yakun Xue Huiqi Li Xieweiyi Ye Shuangli Yang Zhiping Zheng Xiao Han Xibo Zhang Luning Chen Zhaoxiong Xie Qin Kuang Lansun Zheng 2019Nano Research2019,12,10:0
18A finite oxidation strategy for customizing heterogeneous interfaces to enhance magnetic loss ability and microwave absorption of Fe-cored carbon microcapsules显示文摘Metallic iron particles are of great potential for microwave absorption materials due to their strong magnetic loss ability.However,the oxidation susceptibility of metallic iron particles in the atmospheric environment is regarded as a major factor causing performance degradation.Although many efforts have been developed to avoid their oxidation,whether partial surface oxidized iron particles can improve the microwave absorbing performance is rarely concerned.In order to explore the effect of partial surface oxidation of iron on its properties,the designed yolk–shelled(Fe/FeO_(x))@C composites with multiple heterointerfaces were synthesized via an in-situ polymerization and a finite reduction–oxidation process of Fe_(2)O_(3)ellipsoids.The performance enhancement mechanisms of Fe/FeO_(x)heterointerfaces were also elaborated.It is demonstrated that the introduction of Fe-based heterogeneous interfaces can not only enhance the dielectric loss,but also increase the imaginary part of the permeability in the higher frequency range to strengthen the magnetic loss ability.Meanwhile,the yolk–shell structure can effectively improve impedance matching and enhance microwave absorption performances via increasing multiple reflection and scattering behaviors of incident microwaves.Compared to Fe@C composite,the effective absorption(reflection loss(RL)<−10 dB)bandwidth of the optimized(Fe/FeO_(x))@C-2 increases from 5.7 to 7.3 GHz(10.7–18.0 GHz)at a same matching thickness of 2 mm,which can completely cover Ku-band.This work offers a good perspective for the enhancement of magnetic loss ability and microwave absorption performance of Fe-based microwave absorption materials with promising practical applications.Meixi Zhang Laisen Wang Susu Bao Zhijia Song Wenjiao Chen Zhiyuan Jiang Zhaoxiong Xie Lansun Zheng 2023Nano Research2023,16,8:0
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