Ionescu, Emanuel ; Li, Wenjie ; Wiehl, Leonore ; Mera, Gabriela ; Riedel, Ralf (2017)
Synthesis of Nanocrystalline Gd2O2NCN from a Versatile Single-source Precursor.
In: Zeitschrift für anorganische und allgemeine Chemie, 643 (21)
doi: 10.1002/zaac.201700266
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Nanocrystalline Gd2O2NCN (P3m1, crystallite size 30–40 nm) was synthesized upon ammonolysis of bis[[(N-carboxymethyl,N-carboxy-κO-methyl)amino-κN]-ethyl]-glycinato(3-)-κN,κO]gadolinium(III) (diethylenetriamine pentaacetic acid gadolinium(III) dihydrogen salt or gadopentetic acid, Gd-H2DTPA hereafter) at 900 °C. The conversion of Gd-H2DTPA into Gd2O2NCN takes place in several steps, probably via transient formation of iminodiacetate-, glycinate-, and carbamate-containing complexes of Gd. Thermal treatment in air of Gd-H2DTPA at 750 and 1300 °C delivers nanocrystalline bixbyite-type Gd2O3 (Ia3, crystallite size 30–70 nm); in an argon or nitrogen atmosphere the formation of monoclinic Gd2O3 (C2/m) was observed at 1300 °C. The synthesized Gd2O2NCN converts upon thermal treatment in air, nitrogen, or argon atmosphere into monoclinic Gd2O3 (C2/m). In ammonia atmosphere, Gd2O2NCN seems to be stable against decomposition, even upon prolonged exposure to 1000 °C. This study indicates that Gd-H2DTPA may be a robust, low-cost, and flexible precursor for nanoscaled Gd-based nanopowders. Moreover, precursor approaches based on metal complexes using H5DTPA as a ligand are suggested as promising access pathways towards nanocrystalline materials in the M/O/C/N system.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Ionescu, Emanuel ; Li, Wenjie ; Wiehl, Leonore ; Mera, Gabriela ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Synthesis of Nanocrystalline Gd2O2NCN from a Versatile Single-source Precursor |
| Sprache: | Englisch |
| Publikationsjahr: | 3 November 2017 |
| Verlag: | WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Zeitschrift für anorganische und allgemeine Chemie |
| Jahrgang/Volume einer Zeitschrift: | 643 |
| (Heft-)Nummer: | 21 |
| DOI: | 10.1002/zaac.201700266 |
| URL / URN: | https://doi.org/10.1002/zaac.201700266 |
| Kurzbeschreibung (Abstract): | Nanocrystalline Gd2O2NCN (P3m1, crystallite size 30–40 nm) was synthesized upon ammonolysis of bis[[(N-carboxymethyl,N-carboxy-κO-methyl)amino-κN]-ethyl]-glycinato(3-)-κN,κO]gadolinium(III) (diethylenetriamine pentaacetic acid gadolinium(III) dihydrogen salt or gadopentetic acid, Gd-H2DTPA hereafter) at 900 °C. The conversion of Gd-H2DTPA into Gd2O2NCN takes place in several steps, probably via transient formation of iminodiacetate-, glycinate-, and carbamate-containing complexes of Gd. Thermal treatment in air of Gd-H2DTPA at 750 and 1300 °C delivers nanocrystalline bixbyite-type Gd2O3 (Ia3, crystallite size 30–70 nm); in an argon or nitrogen atmosphere the formation of monoclinic Gd2O3 (C2/m) was observed at 1300 °C. The synthesized Gd2O2NCN converts upon thermal treatment in air, nitrogen, or argon atmosphere into monoclinic Gd2O3 (C2/m). In ammonia atmosphere, Gd2O2NCN seems to be stable against decomposition, even upon prolonged exposure to 1000 °C. This study indicates that Gd-H2DTPA may be a robust, low-cost, and flexible precursor for nanoscaled Gd-based nanopowders. Moreover, precursor approaches based on metal complexes using H5DTPA as a ligand are suggested as promising access pathways towards nanocrystalline materials in the M/O/C/N system. |
| Zusätzliche Informationen: | Special Issue: Dedicated to Professor Wolfgang Schnick on the Occasion of his 60th Birthday |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| Hinterlegungsdatum: | 11 Dez 2017 12:26 |
| Letzte Änderung: | 30 Jul 2018 05:44 |
| PPN: | |
| Sponsoren: | Funded by FP7 People: Marie-Curie Actions. Grant Number: FP7-PITN-GA-2010-264873 (FUNEA), Funded by European Union COST Action. Grant Number: CM 1302 Smart Inorganic Polymers, Funded by Technische Universität Darmstadt. Grant Number: Re-entry Fellowship |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum