Gram-scale selective synthesis of WO3-x nanorods and (NH4)xWO3 ammonium tungsten bronzes with tunable plasmonic properties

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Rene Doren
  • Benjamin Leibauer
  • Martin Alexander Lange
  • Eugen Schechtel
  • Leon Pradel
  • Martin Panthofer
  • Mihail Mondeshki
  • Wolfgang Tremel
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000641879500001&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1039/d0nr09055g
eISSN
2040-3372
Externe Identifier
  • Clarivate Analytics Document Solution ID: RY1VB
  • PubMed Identifier: 33881034
ISSN
2040-3364
Ausgabe der Veröffentlichung
17
Zeitschrift
NANOSCALE
Paginierung
8146 - 8162
Datum der Veröffentlichung
2021
Status
Published
Titel
Gram-scale selective synthesis of WO<sub>3-<i>x</i></sub> nanorods and (NH<sub>4</sub>)<sub><i>x</i></sub>WO<sub>3</sub> ammonium tungsten bronzes with tunable plasmonic properties
Sub types
  • Article
Ausgabe der Zeitschrift
13

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<p>WO<sub>3-x</sub> and (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> are prepared from ammonium metatungstate. Oleyl oleamide, formed from oleic acid and oleylamine at <italic>T</italic> &gt; 250 °C, favors the formation of WO<sub>3-x</sub> nanorods, fast heating rates and high precursor concentrations the formation of (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub>.</p>
Autoren
  • René Dören
  • Benjamin Leibauer
  • Martin Alexander Lange
  • Eugen Schechtel
  • Leon Prädel
  • Martin Panthöfer
  • Mihail Mondeshki
  • Wolfgang Tremel
DOI
10.1039/d0nr09055g
eISSN
2040-3372
ISSN
2040-3364
Ausgabe der Veröffentlichung
17
Zeitschrift
Nanoscale
Sprache
en
Online publication date
2021
Paginierung
8146 - 8162
Status
Published online
Herausgeber
Royal Society of Chemistry (RSC)
Herausgeber URL
http://dx.doi.org/10.1039/d0nr09055g
Datum der Datenerfassung
2024
Titel
Gram-scale selective synthesis of WO<sub>3−x</sub> nanorods and (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> ammonium tungsten bronzes with tunable plasmonic properties
Ausgabe der Zeitschrift
13

Datenquelle: Crossref

Abstract
Localized surface plasmon resonance properties in unconventional materials like metal oxides or chalcogenide semiconductors have been studied for use in signal detection and analysis in biomedicine and photocatalysis. We devised a selective synthesis of the tungsten oxides WO<sub>3-x</sub> and (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> with tunable plasmonic properties. We selectively synthesized WO<sub>3-x</sub> nanorods with different aspect ratios and hexagonal tungsten bronzes (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> as truncated nanocubes starting from ammonium metatungstate (NH<sub>4</sub>)<sub>6</sub>H<sub>2</sub>W<sub>12</sub>O<sub>40</sub>·xH<sub>2</sub>O. Both particles form from the same nuclei at temperatures >200 °C; monomer concentration and surfactant ratio are essential variables for phase selection. (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> was the preferred reaction product only for fast heating rates (25 K min<sup>-1</sup>), slow stirring speeds (∼150 rpm) and high precursor concentrations. A proton nuclear magnetic resonance (<sup>1</sup>H-NMR) spectroscopic study of the reaction mechanism revealed that oleyl oleamide, formed from oleic acid and oleylamine upon heating, is a key factor for the selective formation of WO<sub>3-x</sub> nanorods. Since oleic acid and oleylamine are standard surfactants for the wet chemical synthesis of many metal and oxide nanoparticles, the finding that oleyl oleamide acts as a chemically active reagent above 250 °C may have implications for many nanoparticle syntheses. Oriented attachment of polyoxotungstate anions is proposed as a model to rationalize phase selectivity. Magic angle spinning (MAS) <sup>1</sup>H-NMR and powder X-ray diffraction (PXRD) studies of the bronze after annealing under (non)inert conditions revealed an oxidative phase transition. WO<sub>3-x</sub> and (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> show a strong plasmon absorption for near infra-red light between 800 and 3300 nm. The maxima of the plasmon bands shift systematically with the nanocrystal aspect ratio.
Addresses
  • Johannes Gutenberg-Universität Mainz, Institut für Anorganische Chemie und Analytische Chemie, Duesbergweg 10-14, D-55128 Mainz, Germany. tremel@uni-mainz.de.
Autoren
  • René Dören
  • Benjamin Leibauer
  • Martin Alexander Lange
  • Eugen Schechtel
  • Leon Prädel
  • Martin Panthöfer
  • Mihail Mondeshki
  • Wolfgang Tremel
DOI
10.1039/d0nr09055g
eISSN
2040-3372
Externe Identifier
  • PubMed Identifier: 33881034
Open access
false
ISSN
2040-3364
Ausgabe der Veröffentlichung
17
Zeitschrift
Nanoscale
Sprache
eng
Medium
Print-Electronic
Online publication date
2021
Paginierung
8146 - 8162
Datum der Veröffentlichung
2021
Status
Published
Datum der Datenerfassung
2021
Titel
Gram-scale selective synthesis of WO<sub>3-x</sub> nanorods and (NH<sub>4</sub>)<sub>x</sub>WO<sub>3</sub> ammonium tungsten bronzes with tunable plasmonic properties.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
13

Datenquelle: Europe PubMed Central

Abstract
Localized surface plasmon resonance properties in unconventional materials like metal oxides or chalcogenide semiconductors have been studied for use in signal detection and analysis in biomedicine and photocatalysis. We devised a selective synthesis of the tungsten oxides WO3-x and (NH4)xWO3 with tunable plasmonic properties. We selectively synthesized WO3-x nanorods with different aspect ratios and hexagonal tungsten bronzes (NH4)xWO3 as truncated nanocubes starting from ammonium metatungstate (NH4)6H2W12O40·xH2O. Both particles form from the same nuclei at temperatures >200 °C; monomer concentration and surfactant ratio are essential variables for phase selection. (NH4)xWO3 was the preferred reaction product only for fast heating rates (25 K min-1), slow stirring speeds (∼150 rpm) and high precursor concentrations. A proton nuclear magnetic resonance (1H-NMR) spectroscopic study of the reaction mechanism revealed that oleyl oleamide, formed from oleic acid and oleylamine upon heating, is a key factor for the selective formation of WO3-x nanorods. Since oleic acid and oleylamine are standard surfactants for the wet chemical synthesis of many metal and oxide nanoparticles, the finding that oleyl oleamide acts as a chemically active reagent above 250 °C may have implications for many nanoparticle syntheses. Oriented attachment of polyoxotungstate anions is proposed as a model to rationalize phase selectivity. Magic angle spinning (MAS) 1H-NMR and powder X-ray diffraction (PXRD) studies of the bronze after annealing under (non)inert conditions revealed an oxidative phase transition. WO3-x and (NH4)xWO3 show a strong plasmon absorption for near infra-red light between 800 and 3300 nm. The maxima of the plasmon bands shift systematically with the nanocrystal aspect ratio.
Autoren
  • René Dören
  • Benjamin Leibauer
  • Martin Alexander Lange
  • Eugen Schechtel
  • Leon Prädel
  • Martin Panthöfer
  • Mihail Mondeshki
  • Wolfgang Tremel
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/33881034
DOI
10.1039/d0nr09055g
eISSN
2040-3372
Ausgabe der Veröffentlichung
17
Zeitschrift
Nanoscale
Sprache
eng
Country
England
Paginierung
8146 - 8162
Datum der Veröffentlichung
2021
Status
Published
Titel
Gram-scale selective synthesis of WO3-x nanorods and (NH4)xWO3 ammonium tungsten bronzes with tunable plasmonic properties.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
13

Datenquelle: PubMed

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