Effect of Reaction Parameters on Composition and Morphology of Titanate Nanomaterials

6533b836fe1ef96bd12a0ac0

RESEARCH PRODUCT

Effect of Reaction Parameters on Composition and Morphology of Titanate Nanomaterials

Olivier Heintz Nadine Millot Rémi Chassagnon Saviot Lucien Anne-laure Papa

subject

Nanotube Materials science [ PHYS.COND.CM-MS ] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Titanate Grain size 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Nanomaterials symbols.namesake General Energy X-ray photoelectron spectroscopy Chemical engineering Transmission electron microscopy symbols [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Physical and Theoretical Chemistry 0210 nano-technology Raman spectroscopy Chemical composition

description

International audience; In the present article, we report the synthesis of titanate nanotubes and nanoribbons with controlled morphology, structure, and chemical composition depending on the main parameters of the synthesis. Hydrothermal processing time, grain size of the precursor, type of agitation, and acid treatment were investigated, and the principal controversies mentioned in the literature such as nanotube crystallographic structure, their chemical composition, and acid treatment impact are discussed. These controversies may be due to the heterogeneities present in all the samples and are rarely considered in the literature. These nanostructures were characterized by Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction (XRD), and transmission electron microscopy. A careful desummation of the first XRD peaks revealed the presence of both nanosheets and nanotubes and allowed an estimation of their proportions. In addition, the titanate nanotube section is observed to be not perfectly circular but rather elliptic. Moreover, the first acid treatment effect is shown to remove any trace of sodium and structural water. The second effect of acid washing is a morphological evolution.

year	journal	country	edition	language
2009-07-15

https://hal.archives-ouvertes.fr/hal-00404290

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