Berichte der Bunsengesellschaft für physikalische Chemie最新文献_第8页

Modeling of nickel surface state in electrocatalytic hypophosphite oxidation according to on-line electrochemical mass spectrometry studies 基于在线电化学质谱研究的电催化次磷酸盐氧化过程中镍表面状态的建模

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19971011211

Zenonas Jusys, Algirdas Vaškelis

引用次数: 2

Colloidal assemblies used as templates to control the size, shape and self organization of nanoparticles 用作模板的胶体组件，用于控制纳米颗粒的大小、形状和自组织

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19971011105

M. P. Pileni

引用次数: 17

Mie resonances: Sensors for physical and chemical cluster interface properties Mie共振：用于物理和化学团簇界面特性的传感器

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19971011107

U. Kreibig, M. Gartz, A. Hilger

{"title":"Mie resonances: Sensors for physical and chemical cluster interface properties","authors":"U. Kreibig, M. Gartz, A. Hilger","doi":"10.1002/bbpc.19971011107","DOIUrl":"https://doi.org/10.1002/bbpc.19971011107","url":null,"abstract":"Metal clusters exhibit unique optical properties due to the excitation of Mie plasmon resonances. It is well known since decades that measured resonances of clusters, surrounded by some adsorbate, or some solid or liquid embedding material (as e.g., in colloidal systems), are often not described quantitatively by Mie's theory. Only recently, these discrepancies were traced back to complex physical and chemical influences of the cluster-matrix interlayer onto the optical response. They prove often to be more important than cluster size effects.These findings opened a new field of surface/interface research where deviations of measured Mie resonances from the predictions of Mie's theory are used as sensitive sensors for physical and chemical interface properties and processes in cluster-matter.By combining optical spectroscopy experiments on free clusters in UHV and on the same clusters after embedding, this method was calibrated to separate, quantitatively, the cluster-matrix interface effects from other cluster effects like shape and structure effects, nonlocal dielectric effects and cluster size effects.Among all metals, silver exhibits the most pronounced Mie resonances, so silver clusters were used as model systems and were embedded in a broad variety of solid and liquid embedding media, in course of the investigations reported in the present Progress Report.A theoretical description of the obtained data, based upon static and dynamic charge transfer processes of the cluster electrons into/out of adsorbate states is, however, only at its beginning. It allows to ascribe the extremely short decay times of the resonances of the order of 1 to 10 fs to phase relaxation processes; the decay times are in good correspondence with results of direct femtosecond-experiments.","PeriodicalId":100156,"journal":{"name":"Berichte der Bunsengesellschaft für physikalische Chemie","volume":"101 11","pages":"1593-1604"},"PeriodicalIF":0.0,"publicationDate":"2010-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/bbpc.19971011107","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72324342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 90

Nanoclusters of semiconductors and metals: Colloidal nano-particles of semiconductors and metals: Electronic structure and processes 半导体和金属纳米团簇：半导体和金属胶体纳米粒子：电子结构和工艺

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19971011103

Arnim Henglein

引用次数: 74

Werner Massa: Kristallstrukturbestimmung. Teubner-Verlag, Stuttgart, ISBN: 3–5 19–13527-2, DM 32,80 Werner Massa:Kristallstrukturbestimmung。Teubner Verlag，斯图加特，ISBN:3-5 19-13527-2，DM 32.80

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19971010344

Caroline Röhr

引用次数: 0

Size dependence of structural and dynamic properties of CdS-nanoparticles CdS纳米粒子结构和动力学性质的尺寸依赖性

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19971011109

Jörg Rockenberger, Larc Tröger, Andreas Kornowski, Tobias Voßmeyer, Alexander Eychmüller, Josef Feldhaus, Horst Weller

{"title":"Size dependence of structural and dynamic properties of CdS-nanoparticles","authors":"Jörg Rockenberger, Larc Tröger, Andreas Kornowski, Tobias Voßmeyer, Alexander Eychmüller, Josef Feldhaus, Horst Weller","doi":"10.1002/bbpc.19971011109","DOIUrl":"https://doi.org/10.1002/bbpc.19971011109","url":null,"abstract":"Temperature-dependent EXAFS (Extended X-ray Absorption Fine Structure) measurements between 5 and 290 K show that structural and dynamic properties of CdS nanoparticles with 13-120 Å diameter depend on their particle size and the way of surface stabilization. The mean Cd-S distance of thiolcapped CdS nanoparticles (13-40 Å) increases with decreasing particle size with respect to CdS bulk. In contrast, mean interatomic distances in polyphosphate-stabilized particles (30-120 Å) are slightly contracted. This demonstrates that the covalently bound thiol ligands induce the nanocluster lattice expansion. From the temperature dependence of the mean-square relative displacement (MSRD), a slight stiffening of the Cd-S bond can be observed with decreasing particle size. The static part of the MSRD, reflecting static disorder of the Cd-S bond, exhibits a maximum at cluster sizes of about 30 Å. For particles larger than 30 Å diameter, the increase of the static disorder follows the change of the surface to volume ratio. This ratio also determines the size dependence of the asymmetry of the interatomic Cd-S pair potential. Furthermore, in CdS bulk and CdS nanoparticles with the thermodynamically favored wurtzite structure this asymmetry is significantly enlarged in comparison to nanoparticles with zincblende structure.","PeriodicalId":100156,"journal":{"name":"Berichte der Bunsengesellschaft für physikalische Chemie","volume":"101 11","pages":"1613-1616"},"PeriodicalIF":0.0,"publicationDate":"2010-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/bbpc.19971011109","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72324376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Synthesis and characterization of PbS nanoparticles in block copolymer micelles 嵌段共聚物胶束中PbS纳米粒子的合成与表征

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19971011119

T. Schneider, M. Haase, A. Kornowski, S. Naused, H. Weller, S. Förster, M. Antonietti

引用次数: 22

Raman spectral study of WCl6 in alkali chloride melts 氯化碱熔体中WCl6的拉曼光谱研究

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19971010511

George Carountzos, Christos G. Kontoyannis, Terje Østvold

引用次数: 1

Physical characteristics of aluminium plating solutions containing quaternary aralkylammonium compounds 含季芳烷基铵化合物的镀铝溶液的物理特性

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19981020115

L. Simanavičius, A. Stakénas, A. Šarkis

引用次数: 0

Experimental investigations of the enthalpies of formation of Zr-based metallic amorphous binary and ternary alloys 锆基金属非晶二、三元合金生成焓的实验研究

Berichte der Bunsengesellschaft für physikalische Chemie Pub Date : 2010-06-22 DOI: 10.1002/bbpc.19981020932

A. A. Turchanin, I. A. Tomilin

{"title":"Experimental investigations of the enthalpies of formation of Zr-based metallic amorphous binary and ternary alloys","authors":"A. A. Turchanin, I. A. Tomilin","doi":"10.1002/bbpc.19981020932","DOIUrl":"10.1002/bbpc.19981020932","url":null,"abstract":"The enthalpies of formation of amorphous Zr-Cu, Zr-Ni, Zr-Cu-Al, Zr-Ni-Al and Zr-Ni-Ti alloys from pure crystalline elements at 298 K were measured in an isoperibolic Calvet-type solution calorimeter which is operating in the temperature range 298–1300 K. The alloys of the following compositions were investigated:Zr1-xCux (x = 0.30, 0.40, 0.50, 0.60, 0.65, 0.70)Zr1-xNix (x = 0.33, 0.40, 0.67)(Zr0.65Cu0.35)1-x (Zr0.65Cu0.35)x (x = 0, 0.10, 0.20, 0.40, 0.50, 0.60, 0.70, 0.80)(Zr0.60Ni0.40)1-x (Zr0.60Ni0.40)x (x = 0, 0.125, 0.250, 0.374, 0.500)(Zr0.33Ni0.67)1-x (Ti0.33Ni0.67)x (x = 0, 0.15, 0.30, 0.45)The results are discussed in comparison with thermodynamic data about enthalpies of formation of liquid alloys and intermetallic compounds available in the literature. In all investigated systems the enthalpies of formation show great negative values and a strong chemical interaction between the atoms.","PeriodicalId":100156,"journal":{"name":"Berichte der Bunsengesellschaft für physikalische Chemie","volume":"102 9","pages":"1252-1258"},"PeriodicalIF":0.0,"publicationDate":"2010-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/bbpc.19981020932","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92813914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19