Unambiguous localization of titanium and iron cations in doped manganese hollandite nanowires

Isabel Gómez-Recio; Alberto Azor-Lafarga; M. Luisa Ruiz-González; María Hernando; Marina Parras; José Juan Calvino; María Teresa Fernández-Díaz; David Portehault; Clement Sanchez; José M. González-Calbet

doi:10.1039/D0CC01888K

Unambiguous localization of titanium and iron cations in doped manganese hollandite nanowires†

Isabel Gómez-Recio,

^ab Alberto Azor-Lafarga,

^a M. Luisa Ruiz-González,

^a María Hernando,

^a Marina Parras,

^a José Juan Calvino,

^c María Teresa Fernández-Díaz,^d David Portehault,

^b Clement Sanchez

^b and José M. González-Calbet

*^ae

Author affiliations

* Corresponding authors

^a Departamento de Química Inorgánica, Facultad de Químicas, Universidad Complutense, 28040-Madrid, Spain
E-mail: jgcalbet@ucm.es

^b Sorbonne Université, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris (LCMCP), 4 Place Jussieu, F-75005 Paris, France

^c Facultad de Ciencias, Universidad de Cádiz, Campus Rio San Pedro, Puerto Real, Spain

^d Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042 Grenoble cedex 9, France

^e Centro Nacional de Microscopía Electrónica, Universidad Complutense, 28040 Madrid, Spain

Abstract

New insights into the chemical and structural features of iron or titanium-doped K_xMnO₂ hollandites are reported. Neutron diffraction and atomically resolved transmission electron microscopy elucidate the localization of the dopant cations that could be one of the key factors governing the functional activity of these nanomaterials.

Chemical Communications

Unambiguous localization of titanium and iron cations in doped manganese hollandite nanowires†

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Unambiguous localization of titanium and iron cations in doped manganese hollandite nanowires

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