Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/14592
Title: | The use of XAFS to determine the nature of interaction of iron and molybdenum metal salts within PS-b-P2VP micelles | Authors: | RISKIN, Alexander Beale, Andrew Michael BOYEN, Hans-Gerd Vantomme, André HARDY, An VAN BAEL, Marlies |
Issue Date: | 2013 | Publisher: | ROYAL SOC CHEMISTRY | Source: | PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 15 (5), p. 1675-1681 | Abstract: | The poly(styrene)-block-poly(2-vinylpyridine) (PS-b-P2VP) micelle route is a well established method for the preparation of bimetallic nanoparticles used for the catalysis of carbon nanotubes and other applications like ultrahigh density storage devices, yet to date no information is available concerning the internal structure of the P2VP-metal salt complex. For the first time, XAFS measurements were performed on micelles loaded with either iron(III) chloride or molybdenum(V) chloride and a combination of both. Analysis of the data revealed that iron is tetrahedrally coordinated within the core, whereas molybdenum is octahedrally coordinated in the pure loaded micelles and trigonally coordinated in the mixed micelles. For the bimetallic samples, analysis of the Fe and Mo K-edge data revealed the existence of an interaction between iron and molybdenum. This approach to obtain detailed structural information during the preparation of these catalyst samples will allow for a deeper understanding of the effects of structure on the function of catalysts used for CNT growth i.e. to explain differences in yield as well as potentially providing a deeper understanding of the CNT growth mechanism itself. | Notes: | [Riskin, Alexander; Hardy, An; Van Bael, Marlies K.] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. [Beale, Andrew M.] Univ Utrecht, Debye Inst Nanomat Sci, NL-3584 CG Utrecht, Netherlands. [Boyen, Hans-Gerhard; Van Bael, Marlies K.] UHasselt, IMOMEC, Nanostruct Phys Grp, B-3590 Diepenbeek, Belgium. [Vantomme, Andre] Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Louvain, Belgium. a.m.beale@uu.nl; hansgerd.boyen@uhasselt.be; andre.vantomme@fys.kuleuven.be; marlies.vanbael@uhasselt.be | Keywords: | walled carbon nanotubes; gas-phase synthesis; crystal-structure; ordered arrays: growth; size; nanoparticles; complexes; chemistry; catalysts | Document URI: | http://hdl.handle.net/1942/14592 | ISSN: | 1463-9076 | e-ISSN: | 1463-9084 | DOI: | 10.1039/c2cp43046k | ISI #: | 000313565300037 | Rights: | This journal is © the Owner Societies 2013. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2014 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
the use of XAFS.pdf Restricted Access | Published version | 2.12 MB | Adobe PDF | View/Open Request a copy |
SCOPUSTM
Citations
1
checked on Sep 3, 2020
WEB OF SCIENCETM
Citations
2
checked on Oct 14, 2024
Page view(s)
116
checked on Sep 4, 2022
Download(s)
88
checked on Sep 4, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.