TITLE

A level set based approach for modeling oxidation processes of ligand stabilized metallic nanoparticles

AUTHOR(S)
Auge, A.; Weddemann, A.; Vogel, B.; Wittbracht, F.; Hütten, A.
PUB. DATE
March 2010
SOURCE
Applied Physics Letters;3/1/2010, Vol. 96 Issue 9, p093111
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The oxidation behavior of metallic nanoparticles is investigated in respect to ligand influences. The nanoparticle oxidation is modeled in a shell-core approach. The shell represents oxidation of surface atoms modeled by Johnson–Mehl–Avrami–Kolmogorov equations for isothermal growth. The oxidation of the nanoparticle core is described by a model introduced by Cabrera and Mott [Rep. Prog. Phys. 12, 163 (1949)]. In order to investigate the ligand influence one single parameter is introduced for both surface and bulk oxidation. The growth of the oxide layer is simulated in a level set framework via finite element methods. The theoretical results are compared to experimental findings of Kanninen et al. [J. Coll. Interf. Sci. 318, 88 (2008)].
ACCESSION #
48428967

 

Related Articles

  • Transmission electron microscopy observation of oxide layer growth on Cu nanoparticles and formation process of hollow oxide particles. Tokozakura, D.; Nakamura, R.; Nakajima, H.; Lee, J.-G.; Mori, H. // Journal of Materials Research;Oct2007, Vol. 22 Issue 10, p11 

    The growth of a Cu2O layer on Cu nanoparticles at 323-373 K was investigated by transmission electron microscopy to elucidate the influence of voids formed at the Cu/Cu2O interface on the oxidation rate. The thickness of the Cu2O formed on Cu nanoparticles with an initial diameter of 10 to ~35...

  • Modification of the electrical properties of poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) upon doping of ZnO nanoparticles of different content. Lin, Yow-Jon; Su, Yu-Chao // Journal of Applied Physics;Apr2012, Vol. 111 Issue 7, p073712 

    A photocurrent decay model is presented that addresses the charge trapping and doping mechanisms for composite poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) (PEDOT:PSS) films having ZnO nanoparticles of different contents. It is shown that ZnO doping introduced changes in...

  • Luminescent core-shell nanostructures of silicon and silicon oxide: Nanodots and nanorods. Ray, Mallar; Basu, Tuhin Shuvra; Jana, Arpita; Bandyopadhyay, Nil Ratan; Hossain, Syed Minhaz; Pramanick, Ashit Kumar; Klie, Robert F. // Journal of Applied Physics;Mar2010, Vol. 107 Issue 6, p064311 

    We report synthesis and luminescent characteristics of core-shell nanostructures of silicon and silicon oxide having two different morphologies—spherical (nanodot) and rodlike (nanorod), prepared by controlled oxidation of mechanically milled crystalline silicon and by exfoliation of the...

  • SiC nano-particles application to nano-floating gate memory. Dong Uk Lee; Tae Hee Lee; Eun Kyu Kim; Jin-Wook Shin; Won-Ju Cho // AIP Conference Proceedings;1/4/2010, Vol. 1199 Issue 1, p509 

    Nonvolatile memory device with the multi-layered SiC nano-particles embedded in SiO2 dielectrics for long-term data storage was fabricated and its electrical properties were evaluated. The SiC nano-particles were formed by using radio-frequency magnetron sputtering in the argon ambient and post...

  • Titanium oxide (TiO) nanoparticles in induction of apoptosis and inflammatory response in brain. Meena, Ramovatar; Kumar, Sumit; Paulraj, R. // Journal of Nanoparticle Research;Jan2015, Vol. 17 Issue 1, p1 

    The ever increasing applications of engineered nanoparticles in 21st century cause serious concern about its potential health risks on living being. Regulatory health risk assessment of such particles has become mandatory for the safe use of nanomaterials in consumer products and medicines. In...

  • Core–shell-structured nanothermites synthesized by atomic layer deposition. Qin, Lijun; Gong, Ting; Hao, Haixia; Wang, Keyong; Feng, Hao // Journal of Nanoparticle Research;Dec2013, Vol. 15 Issue 12, p1 

    Thermite materials feature very exothermic solid-state redox reactions. However, the energy release rates of traditional thermite mixtures are limited by the reactant diffusion velocities. In this work, atomic layer deposition (ALD) is utilized to synthesize thermite materials with greatly...

  • Preparation of Pt—CeO2/MWNT nano-composites by reverse micellar method for methanol oxidation. Dao-Jun Guo; Shu-Kun Cui; Hui Sun // Journal of Nanoparticle Research;Apr2009, Vol. 11 Issue 3, p707 

    Abstract  We report the preparation of Pt–CeO2 nanoparticles on the multi-walled carbon nanotubes (MWNTs) by a reverse micellar method. Transmission electron microscopy (TEM) analysis indicated that well-dispersed small Pt–CeO2 nanoparticles were formed on the MWCNTs. X-ray...

  • Optical measurements of oxidation behavior of silver nanometer particle within pores of silica... Cai, Weiping; Zhong, Huicai; Zhang, Lide // Journal of Applied Physics;2/1/1998, Vol. 83 Issue 3, p1705 

    Examines the oxidation behavioral pattern of the silver (Ag) nanometer particles within the pores of the silica host. Indication of thermodynamic analysis; Information on loading nanometer particles into the pores of mesoporous solids; What a high relative humidity in the air results in.

  • Electrochemical fabrication of arrayed alumina nanowires showing strong blue emission. Kim, M. R.; Kim, J. Y.; Jang, D.-J. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jul2007, Vol. 43 Issue 1-3, p279 

    Arrayed alumina nanowires having controlled uniform diameters of 30–90 nm and lengths of 2–10 μm have been fabricated electrochemically with a high yield using two-step anodized aluminum oxide membranes as templates. The observed photoluminescence of the arrayed alumina...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics