2013
DOI: 10.1002/adfm.201300303
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Engineering of Facets, Band Structure, and Gas‐Sensing Properties of Hierarchical Sn2+‐Doped SnO2 Nanostructures

Abstract: Hierarchical SnO2 nanoflowers, assembled from single‐crystalline SnO2 nanosheets with high‐index (11$ \bar 3 $) and (10$ \bar 2 $) facets exposed, are prepared via a hydrothermal method using sodium fluoride as the morphology controlling agent. Formation of the 3D hierarchical architecture comprising of SnO2 nanosheets takes place via Ostwald ripening mechanism, with the growth orientation regulated by the adsorbate fluorine species. The use of Sn(II) precursor results in simultaneous Sn2+ self‐doping of SnO2 … Show more

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Cited by 220 publications
(151 citation statements)
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“…2d and the observed lattice spacings are relatively larger than those of stoichiometric rutile SnO 2, indicating the nonstoichiometric nature of the as-prepared product due to the presence of large amount of Sn 2+ and the resultant oxygen vacancies . [4] The superstructure reflections at the ½ positions of (121 ̅ ) and (1 ̅ 21) correspond to the lattice spacing of 0.36 nm which is two times as much as that of (121) plane. These larger lattice spacings can be readily observed in HRTEM images.…”
Section: Resultsmentioning
confidence: 99%
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“…2d and the observed lattice spacings are relatively larger than those of stoichiometric rutile SnO 2, indicating the nonstoichiometric nature of the as-prepared product due to the presence of large amount of Sn 2+ and the resultant oxygen vacancies . [4] The superstructure reflections at the ½ positions of (121 ̅ ) and (1 ̅ 21) correspond to the lattice spacing of 0.36 nm which is two times as much as that of (121) plane. These larger lattice spacings can be readily observed in HRTEM images.…”
Section: Resultsmentioning
confidence: 99%
“…Tin dioxide (SnO 2 ) is an important n-type semiconducting metal oxide with coexistence of conductivity and transparency owing to its natural nonstiochiometry such as tin interstitial and oxygen vacancies, [1] which has been widely used in transparent conducting films, [2,3] gas sensors, [4][5][6] lithium ion batteries, [7][8][9][10] and solar cells. [11][12][13] Thus, synthesis of SnO 2 nanostructures with well-defined morphologies, highly reactive surfaces and tunable nonstoichiometric defects have attracted intense research interests due to their shape, size, surface and composition dependent properties.…”
Section: Introductionmentioning
confidence: 99%
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“…In recent years, diverse nanostructures and different morphologies [24][25][26]6,[27][28][29][30][31][32][33] have been reported in succession, in which the complex three-dimensional (3D) nanoflower has received a huge amount of attention [34,35,9]. The 3D-structure is characterized by robust structure, broad internal space and large surface area, that all contribute to the long service life, sufficient diffusion path and enough reactive sites of the materials [36][37][38].…”
Section: Introductionmentioning
confidence: 99%