Trimodally porous SnO2 nanospheres with threedimensional interconnectivity and size tunability: A one-pot synthetic route and potential application as an extremely sensitive ethanol detector

Ji Wook Yoon; Seung Ho Choi; Jun Sik Kim; Ho Won Jang; Yun Chan Kang; Jong Heun Lee

doi:10.1038/am.2016.16

Trimodally porous SnO₂ nanospheres with threedimensional interconnectivity and size tunability: A one-pot synthetic route and potential application as an extremely sensitive ethanol detector

Ji Wook Yoon, Seung Ho Choi, Jun Sik Kim, Ho Won Jang, Yun Chan Kang, Jong Heun Lee

Research output: Contribution to journal › Article › peer-review

71 Citations (Scopus)

Abstract

The rapid and effective transfer of chemical reactants to solid surfaces through porous structures is essential for enhancing the performance of nanomaterials for various energy and environmental applications. In this paper, we report a facile one-pot spray pyrolysis method for preparing highly reactant-accessible and porous SnO₂ spheres, which have three-dimensionally interconnected and size-tunable trimodal (microscale, mesoscale and macroscale) pores. For this synthetic method, macroscale polystyrene spheres and mesoscale-diameter, long carbon nanotubes were used as sacrificial templates. The promising potential of the SnO₂ spheres with trimodal pores (sizes ∼3, 20 and 100 nm) was demonstrated by the unprecedentedly high response to several p.p.b. levels of ethanol. Such an ultrahigh response to ethanol is explained with respect to the hierarchical porosity and pore-size-dependent gas diffusion mechanism.

Original language	English
Article number	e244
Journal	NPG Asia Materials
Volume	8
Issue number	3
DOIs	https://doi.org/10.1038/am.2016.16
Publication status	Published - 2016 Mar 25

ASJC Scopus subject areas

Modelling and Simulation
Materials Science(all)
Condensed Matter Physics

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title = "Trimodally porous SnO2 nanospheres with threedimensional interconnectivity and size tunability: A one-pot synthetic route and potential application as an extremely sensitive ethanol detector",

abstract = "The rapid and effective transfer of chemical reactants to solid surfaces through porous structures is essential for enhancing the performance of nanomaterials for various energy and environmental applications. In this paper, we report a facile one-pot spray pyrolysis method for preparing highly reactant-accessible and porous SnO2 spheres, which have three-dimensionally interconnected and size-tunable trimodal (microscale, mesoscale and macroscale) pores. For this synthetic method, macroscale polystyrene spheres and mesoscale-diameter, long carbon nanotubes were used as sacrificial templates. The promising potential of the SnO2 spheres with trimodal pores (sizes ∼3, 20 and 100 nm) was demonstrated by the unprecedentedly high response to several p.p.b. levels of ethanol. Such an ultrahigh response to ethanol is explained with respect to the hierarchical porosity and pore-size-dependent gas diffusion mechanism.",

author = "Yoon, {Ji Wook} and Choi, {Seung Ho} and Kim, {Jun Sik} and Jang, {Ho Won} and Kang, {Yun Chan} and Lee, {Jong Heun}",

note = "Funding Information: This work was supported by a grant from the National Research Foundation of Korea (NRF), which was funded by the Korean government (Ministry of Education, Science, and Technology (MEST), Grant No. 2013R1A2A1A01006545)",

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doi = "10.1038/am.2016.16",

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AU - Choi, Seung Ho

AU - Kim, Jun Sik

AU - Jang, Ho Won

AU - Kang, Yun Chan

AU - Lee, Jong Heun

N1 - Funding Information: This work was supported by a grant from the National Research Foundation of Korea (NRF), which was funded by the Korean government (Ministry of Education, Science, and Technology (MEST), Grant No. 2013R1A2A1A01006545)

PY - 2016/3/25

Y1 - 2016/3/25

N2 - The rapid and effective transfer of chemical reactants to solid surfaces through porous structures is essential for enhancing the performance of nanomaterials for various energy and environmental applications. In this paper, we report a facile one-pot spray pyrolysis method for preparing highly reactant-accessible and porous SnO2 spheres, which have three-dimensionally interconnected and size-tunable trimodal (microscale, mesoscale and macroscale) pores. For this synthetic method, macroscale polystyrene spheres and mesoscale-diameter, long carbon nanotubes were used as sacrificial templates. The promising potential of the SnO2 spheres with trimodal pores (sizes ∼3, 20 and 100 nm) was demonstrated by the unprecedentedly high response to several p.p.b. levels of ethanol. Such an ultrahigh response to ethanol is explained with respect to the hierarchical porosity and pore-size-dependent gas diffusion mechanism.

AB - The rapid and effective transfer of chemical reactants to solid surfaces through porous structures is essential for enhancing the performance of nanomaterials for various energy and environmental applications. In this paper, we report a facile one-pot spray pyrolysis method for preparing highly reactant-accessible and porous SnO2 spheres, which have three-dimensionally interconnected and size-tunable trimodal (microscale, mesoscale and macroscale) pores. For this synthetic method, macroscale polystyrene spheres and mesoscale-diameter, long carbon nanotubes were used as sacrificial templates. The promising potential of the SnO2 spheres with trimodal pores (sizes ∼3, 20 and 100 nm) was demonstrated by the unprecedentedly high response to several p.p.b. levels of ethanol. Such an ultrahigh response to ethanol is explained with respect to the hierarchical porosity and pore-size-dependent gas diffusion mechanism.

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Trimodally porous SnO₂ nanospheres with threedimensional interconnectivity and size tunability: A one-pot synthetic route and potential application as an extremely sensitive ethanol detector

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