Structure and magnetic response of a residual metal catalyst in highly purified single walled carbon nanotubes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00394526" target="_blank" >RIV/68378271:_____/13:00394526 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/13:00394526

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c3cp00087g" target="_blank" >http://dx.doi.org/10.1039/c3cp00087g</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c3cp00087g" target="_blank" >10.1039/c3cp00087g</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structure and magnetic response of a residual metal catalyst in highly purified single walled carbon nanotubes

Popis výsledku v původním jazyce

Article presents methods for physical analysis of partial steps leading to the removal of residual metal catalyst nanoparticles (NPs) from single walled carbon nanotubes (SWCNTs) and options for detecting negligible amount of metal in samples possessingdiamagnetic response. Based on the previous knowledge of the NP properties included in the commercial SWCNTs, the properties of remaining NPs after the multi-step purification and annealing under static and dynamic vacuum have been investigated. TG, XRD,magnetic property measurements and EXAFS experiments have been done and provided information about the nature of the residual NPs in purified SWCNTs, crucial for further understanding of the purification processes and their improvement. We demonstratedthat even if all macroscopic methods indicate a high purity of the treated sample, a non-negligible amount of the metal may still be present and the metal content has to be examined using local element sensitive probes such as EXAFS.

Název v anglickém jazyce

Structure and magnetic response of a residual metal catalyst in highly purified single walled carbon nanotubes

Popis výsledku anglicky

Article presents methods for physical analysis of partial steps leading to the removal of residual metal catalyst nanoparticles (NPs) from single walled carbon nanotubes (SWCNTs) and options for detecting negligible amount of metal in samples possessingdiamagnetic response. Based on the previous knowledge of the NP properties included in the commercial SWCNTs, the properties of remaining NPs after the multi-step purification and annealing under static and dynamic vacuum have been investigated. TG, XRD,magnetic property measurements and EXAFS experiments have been done and provided information about the nature of the residual NPs in purified SWCNTs, crucial for further understanding of the purification processes and their improvement. We demonstratedthat even if all macroscopic methods indicate a high purity of the treated sample, a non-negligible amount of the metal may still be present and the metal content has to be examined using local element sensitive probes such as EXAFS.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP204%2F10%2F1677" target="_blank" >GAP204/10/1677: Magnetické vlastnosti uhlíkových nanotub v neutrálním a dopovaném stavu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

5992-6000

Kód UT WoS článku

000316803500028

EID výsledku v databázi Scopus

—