Chapter 5 . CORE - SHELL NANOPARTICLES AND ASSEMBLIES THEREOF Luis M

نویسندگان

  • Uwe Kreibig
  • Helmut Bönnemann
  • Josef Hormes
چکیده

1. Preparation Methods for Nanoparticles and Cluster-Matter by “Physical” Means (U. Kreibig, Aachen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Nanoparticles and Cluster Matter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2. Cluster-Matter Characterization and Properties . . . . . . . . . . . . . . . . . . . . 4 1.3. Particle Stability and Particle Stabilization . . . . . . . . . . . . . . . . . . . . . . . 6 1.4. Cluster Aggregation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1.5. Particle Production Methods: A Survey . . . . . . . . . . . . . . . . . . . . . . . . . 23 1.6. Atomic Vapor Aggregation Methods . . . . . . . . . . . . . . . . . . . . . . . . . . 28 1.7. Lithography Techniques to Produce Ordered Cluster Arrays . . . . . . . . . . . . . 37 1.8. Concluding Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 2. Nanostructured Metal Colloids—Chemistry and Potential Applications (H. Bönnemann, Mülheim) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 2.1. Wet Chemical Preparation Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 2.2. Applications in Catalysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 2.3. Potential Applications in Materials Science . . . . . . . . . . . . . . . . . . . . . . 61 3. Characterization of the Geometric and Electronic Structure of Nanostructured Metal Colloids Using X-Ray Absorption Spectroscopy and Related Methods (J. Hormes, Bonn, Baton Rouge) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 3.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

In Situ Generation of Two-Dimensional Au–Pt Core–Shell Nanoparticle Assemblies

Two-dimensional assemblies of Au-Pt bimetallic nanoparticles are generated in situ on polyethyleneimmine (PEI) silane functionalized silicon and indium tin oxide (ITO) coated glass surfaces. Atomic force microscopy (AFM), UV-Visible spectroscopy, and electrochemical measurements reveal the formation of core-shell structure with Au as core and Pt as shell. The core-shell structure is further sup...

متن کامل

Dealloyed Pt-based Core-Shell Oxygen Reduction Electrocatalysts

Dealloyed Pt core-shell nanoparticles constitute the most active and stable bimetallic oxygen reduction catalysts for low-temperature fuel cells. Here, we review recent advances on their preparation, structural characterization, and electrocatalytic performance. Starting with bimetallic metal overlayer model systems, for which we illustrate fundamental principles of the ORR activity enhancement...

متن کامل

Magnetic self-assembly of gold nanoparticle chains using dipolar core-shell colloids.

The preparation of gold nanoparticle (AuNP) assemblies was conducted by the synthesis and dipolar assembly of ferromagnetic core-shell nanoparticles composed of AuNP cores and cobalt NP shells. Dissolution of metallic Co phases with mineral acids afforded self-assembled AuNP chains and bracelets.

متن کامل

Plasmon Mapping in Au@Ag Nanocube Assemblies

Surface plasmon modes in metallic nanostructures largely determine their optoelectronic properties. Such plasmon modes can be manipulated by changing the morphology of the nanoparticles or by bringing plasmonic nanoparticle building blocks close to each other within organized assemblies. We report the EELS mapping of such plasmon modes in pure Ag nanocubes, Au@Ag core-shell nanocubes, and array...

متن کامل

Dynamic control of the location of nanoparticles in hybrid co-assemblies.

We herein demonstrated an approach to control the spatial distribution of components in hybrid microspheres. Hybrid core-shell structured microspheres (CSMs) prepared through co-assembly were used as starting materials, which are comprised of anthracene-ended hyperbranched poly(ether amine) (AN-hPEA) in the shell and crystallized anthracene containing polyhedral oligomer silsesquioxane (AN-POSS...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2001