2009
DOI: 10.1002/ange.200903926
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Synthesis of Tin Dioxide Octahedral Nanoparticles with Exposed High‐Energy {221} Facets and Enhanced Gas‐Sensing Properties

Abstract: National Natural Science Foundation of China [20725310, 20721001, 20673085, 20801045]; National Basic Research Program of China [2007CB15303, 2009CB939804

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Cited by 142 publications
(131 citation statements)
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“…In the past decade, many efforts have been devoted to controlling the crystal surface structures for specific purpose, since many physicochemical properties of crystals strongly depend on their exposed surface [1][2][3][4][5]. Despite the great success in morphology-controlled syntheses of nanocrystals, our comprehension of the formation mechanism of specific surface of crystals in nanoscale is far from enough.…”
Section: Introductionmentioning
confidence: 99%
“…In the past decade, many efforts have been devoted to controlling the crystal surface structures for specific purpose, since many physicochemical properties of crystals strongly depend on their exposed surface [1][2][3][4][5]. Despite the great success in morphology-controlled syntheses of nanocrystals, our comprehension of the formation mechanism of specific surface of crystals in nanoscale is far from enough.…”
Section: Introductionmentioning
confidence: 99%
“…It is evident from the HRTEM results (Figures 7-9) that, stacking faults for Cu and Pt: SnO2 powders and {221} facets for Pd: SnO2 powders are observed. It has recently shown by Han et.el [56], that {221} facets show higher sensitivities compared to others. Therefore, the necks formation and the structural modifications produced by to chemical doping have enhanced the sensitivity of the doped SnO2 pellets.…”
Section: Gas Sensing Mechanismmentioning
confidence: 93%
“…Whereas, in case of Pd: SnO2 powders, as shown in the Figure 9d, the stacking faults or defects obtained on the {221} facets of SnO2 projected from (110) plane. The {221} is a typical facet of SnO2 and can be described as combination of (001) and (110) steps [56]. According Xiguang Han, et.al [56], {221} facets are very favourable for gas sensing properties.…”
Section: Hrtem Analysismentioning
confidence: 99%
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“…2b. The pattern indicates preferential growth along the (211) plane, which is a high index plane that should have improved catalytic activity due to increased density of dangling bonds (Tian et al 2007;Han et al 2009). The graphene oxide sheets were crumpled using electrospray and then deposited onto the SnO 2 nanostructured thin film, with the composite film shown in Fig.…”
Section: Materials Characterization and Film Fabricationmentioning
confidence: 99%