| DOI | Resolve DOI: https://doi.org/10.1021/jp809740e |
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| Author | Search for: Wang, Li-Qiong; Search for: Wang, Donghai; Search for: Liu, Jun; Search for: Exarhos, Gregory J.; Search for: Pawsey, Shane1; Search for: Moudrakovski, Igor1 |
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| Affiliation | - National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
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| Format | Text, Article |
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| Subject | hyperpolarized; porosity; interconnectivity; crystalline; mesoporous; antase; characterization techniques; NMR; spectra; millisecond timescale; mesoporous |
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| Abstract | Hyperpolarized (HP) 129Xe NMR was used to probe the porosity and interconnectivity of pores in crystalline mesoporous TiO2. We have demonstrated that HP 129Xe NMR can be used to differentiate between similar sized pores within different crystalline phases. Pores of 4 nm size resident in mixed anatase and rutile mesoporous TiO2 phases were identified. Complementary to other pore characterization techniques, HP 129Xe NMR is able to probe the interconnectivity between pores present in these different phases. The cross peaks in 2D exchange (EXSY) NMR spectra between the signals of xenon in two types of pores are visible on millisecond timescale, indicating substantial pore interconnectivity. The obtained information on porosity and interconnectivity is important for the understanding of ion transport mechanisms in mesoporous TiO2 anode materials. |
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| Publication date | 2009-03-30 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 16181449 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | ef9c3070-ef0c-4891-9b8a-cdf0f098c051 |
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| Record created | 2011-02-09 |
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| Record modified | 2020-04-16 |
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