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Todorokite-type manganese oxide octahedral molecular sieves (OMS-I) have been extensively studied due to their potential applications as materials. In this study, a nanofibrous todorokite-type, tunnel structure, manganese oxide molecular sieve material was successfully synthesized from a layered precursor with Co(NH3)63+ complex ions as a template director by a refluxing method (namely, Co(N)-todorokite). X-ray photoelectron spectroscopy (XPS) indicates that complex ions are located in the tunnel of the Co(N)-todorokite in the form of[Co(NH3)x]3+(4 < x < 6) ions, while keeping the trivalence of the cobalt ions. Scanning electron microscopic (SEM) and high resolution transmission electron microscopic (HRTEM) images reveal that this material has a fibrous morphology with a thickness of 20—40 nm, and a lattice fringe spacing of 0.96 nm, corresponding to the (100) plane of the todorokite structure. The [010] HRTEM fringe images show that the tunnels contained a constant triple-chain width (3 x 3) along the c and a axes. The Co(N)-todorokite consists of a chemical composition of Co0.11N0.48H1.39MnO1.99·H2Ox. Thermogravity analysis (TGA) indicates that these nanofibers are thermally stable up to 400 °C. The Brunauer-Emmett-Teller (BET) surface area for Co(N)-todorokite is 98.2 m2/g, which is higher than that of bulk todorokite materials. The Horvath-Kawazoe (HK) plot shows a major pore size distribution peak centered at 0.71 nm for Co(N)-todorokite.

Titel:	Synthesis of a Nanofibrous Manganese Oxide Octahedral Molecular Sieve with Co(NH3)63+ Complex Ions as a Template via a Reflux Method
Autor/in / Beteiligte Person:	HAOJIE, CUI ; XIONGHAN, FENG ; WENFENG, TAN ; WEI, ZHAO ; MING KUANG, WANG ; TOU MING, TSAO ; FAN, LIU
Link:	View record from PASCAL Archive
Zeitschrift:	Crystal growth & design, Jg. 10 (2010), Heft 8, S. 3355-3362
Veröffentlichung:	Washington,DC: American Chemical Society, 2010
Medientyp:	academicJournal
Umfang:	print, 41 ref
ISSN:	1528-7483 (print)
Schlagwort:	Crystallography Cristallographie cristallogenèse Sciences exactes et technologie Exact sciences and technology Physique Physics Domaines interdisciplinaires: science des materiaux; rheologie Cross-disciplinary physics: materials science; rheology Science des matériaux Materials science Nanomatériaux et nanostructures : fabrication et caractèrisation Nanoscale materials and structures: fabrication and characterization Divers Other topics in nanoscale materials and structures Chimie Chemistry Chimie generale et chimie physique General and physical chemistry Physicochimie de surface Surface physical chemistry Echange d'ions Ion-exchange Aire superficielle Surface area Area superficial Ammoniac Ammonia Amoníaco Cobalt Cobalto Composition chimique Chemical composition Composición química Conducteur organique Organic conductor Conductor orgánico Dimension pore Pore size Dimensión poro Microscopie électronique balayage Scanning electron microscopy Microscopía electrónica barrido Microscopie électronique transmission Transmission electron microscopy Microscopía electrónica transmisión Microstructure Microestructura Morphologie Morphology Morfología Nanofibre Nanofiber Nanofibra Nanomatériau Nanostructured materials Oxyde de manganèse Manganese oxides Manganeso óxido Précurseur Precursor Réaction dirigée Template reaction Reacción dirigida Spectre photoélectron RX X-ray photoelectron spectra Structure tunnel Channel structure Estructura túnel Tamis moléculaire Molecular sieve Tamiz molecular Thermogravimétrie Thermogravimetry Termogravimetría 2,2p-Bi(1,3-disélénolylidène)(4,5:4p,5p-bis[éthylènedithio]) NH3 Time: 8107 8275
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Key Laboratory of Subtropical Agricultural Resources and Environment, Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070, China ; Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China ; Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 106, Tawain, Province of China Rights: Copyright 2015 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: General chemistry and physical chemistry ; Physics and materials science

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Synthesis of a Nanofibrous Manganese Oxide Octahedral Molecular Sieve with Co(NH3)63+ Complex Ions as a Template via a Reflux Method