Synthesis of MnOOH nanorods by cluster growth route from [Mn{sub 12}O{sub 12}(RCOO){sub 16}(H{sub 2}O) {sub n} ] (R=CH{sub 3}, C{sub 2}H{sub 5}). Rational conversion of MnOOH into Mn{sub 3}O{sub 4} or MnO{sub 2} Nanorods

Journal Article · Fri Jul 15 04:00:00 EDT 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.05.018· OSTI ID:20729039

Folch, Benjamin ^[1]; Larionova, Joulia ^[1]; Guari, Yannick ^[1]; Guerin, Christian ^[1]; Reibel, Corine ^[2]

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1. Laboratoire de Chimie Moleculaire et Organisation du Solide (LCMOS), UMR UMII-CNRS 5637, Universite Montpellier II, Place E. Bataillon, 34095 Montpellier cedex 5 (France)
2. Laboratoire de Physico-Chimie de la Matiere Condensee (LPMC), UMR UMII-CNRS 5617, Universite Montpellier II, Place E. Bataillon, 34095 Montpellier cedex 5 (France)

Single-crystalline nanorods of {gamma}-MnOOH (manganite) phase with diameters of 120 nm and lengths of 1100 nm have been prepared using a new cluster growth route under low-temperature hydrothermal conditions starting from [Mn{sub 12}O{sub 12}(CH{sub 3}COO){sub 16}(H{sub 2}O){sub 4}].2CH{sub 3}COOH.4H{sub 2}O or [Mn{sub 12}O{sub 12}(C{sub 2}H{sub 5}COO){sub 16}(H{sub 2}O){sub 3}].4H{sub 2}O without any catalyst or template agents. The so-obtained nanorods were studied by X-ray diffraction (XRD), infrared (IR) spectroscopy, Raman spectroscopy and high resolution transmission electron microscopy (HRTEM). Their thermal conversion opens an access to Mn{sub 3}O{sub 4} (hausmannite) and {beta}-MnO{sub 2} (pyrolusite) nanorods, respectively, under argon or air atmosphere. A coercive field of 12.4 kOe was obtained for the Mn{sub 3}O{sub 4} nanorods.

• OSTI ID: 20729039
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 7 Vol. 178; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ARGON
INFRARED SPECTRA
MANGANESE OXIDES
MONOCRYSTALS
NANOSTRUCTURES
RAMAN SPECTROSCOPY
SYNTHESIS
THERMODYNAMIC PROPERTIES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION