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Data from: Exfoliation of Quasi-Stratified Bi2S3 Crystals into Micron-Scale Ultrathin Corrugated Nanosheets

RMIT University, Australia
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://figshare.com/articles/Exfoliation_of_Quasi-Stratified_Bi_sub_2_sub_S_sub_3_sub_Crystals_into_Micron-Scale_Ultrathin_Corrugated_Nanosheets/4439675&rft.title=Data from: Exfoliation of Quasi-Stratified Bi2S3 Crystals into Micron-Scale Ultrathin Corrugated Nanosheets&rft.identifier=3ab2383b8c1a6be4acc45679b153186e&rft.publisher=RMIT University, Australia&rft.description=Attached file provides supplementary data for linked article. There is ongoing interest in exploring new two-dimensional materials and exploiting their functionalities. Here, a top-down approach is used for developing a new morphology of ultrathin nanosheets from highly ordered bismuth sulfide crystals. The efficient chemical delamination method exfoliates the bulk powder into a suspension of corrugated ultrathin sheets, despite the fact that the Bi2S3 fundamental layers are made of atomically thin ribbons that are held together by van der Waals forces in two dimensions. Morphological analyses show that the produced corrugated sheets are as thin as 2.5 nm and can be as large as 20 mu m across. Determined atomic ratios indicate that the exfoliation process introduces sulfur vacancies into the sheets, with a resulting stoichiometry of Bi2S2.6. It is hypothesized that the nanoribbons were cross-linked during the reduction process leading to corrugated sheet formation. The material is used for preparing field effect devices and was found to be highly p-doped, which is attributed to the substoichiometry. These devices show a near-linear response to the elevation of temperature. The devices demonstrate selective and relatively fast response to NO2 gas when tested as gas sensors. This is the first report showing the possibility of exfoliating planar morphologies of metal chalcogenide compounds such as orthorhombic Bi2S3, even if their stratified crystal structures constitute van der Waals forces within the fundamental planes.&rft.creator=Anonymous&rft.date=2018&rft.relation=http://dx.doi.org/10.1021/acs.chemmater.6b03478&rft_rights=Further information about rights and usage of ACS publications and supplementary data can be found here: http://pubs.acs.org/page/copyright/permissions.html.&rft_rights=CC BY-NC: Attribution-Noncommercial 3.0 AU http://creativecommons.org/licenses/by-nc/3.0/au&rft_subject=Chemical sensors&rft_subject=Top down approaches&rft_subject=Two-dimensional materials&rft_subject=Ultrathin nanosheets&rft_subject=Crosslinking&rft_subject=Morphology&rft_subject=Nanosheets&rft_subject=Van der Waals forces Corrugated sheets&rft_subject=Exfoliation process&rft_subject=Field-effect devices&rft_subject=Metal chalcogenide&rft_subject=Morphological analysis&rft_subject=Physical Chemistry not elsewhere classified&rft_subject=CHEMICAL SCIENCES&rft_subject=PHYSICAL CHEMISTRY (INCL. STRUCTURAL)&rft.type=dataset&rft.language=English Access the data
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Attached file provides supplementary data for linked article. There is ongoing interest in exploring new two-dimensional materials and exploiting their functionalities. Here, a top-down approach is used for developing a new morphology of ultrathin nanosheets from highly ordered bismuth sulfide crystals. The efficient chemical delamination method exfoliates the bulk powder into a suspension of corrugated ultrathin sheets, despite the fact that the Bi2S3 fundamental layers are made of atomically thin ribbons that are held together by van der Waals forces in two dimensions. Morphological analyses show that the produced corrugated sheets are as thin as 2.5 nm and can be as large as 20 mu m across. Determined atomic ratios indicate that the exfoliation process introduces sulfur vacancies into the sheets, with a resulting stoichiometry of Bi2S2.6. It is hypothesized that the nanoribbons were cross-linked during the reduction process leading to corrugated sheet formation. The material is used for preparing field effect devices and was found to be highly p-doped, which is attributed to the substoichiometry. These devices show a near-linear response to the elevation of temperature. The devices demonstrate selective and relatively fast response to NO2 gas when tested as gas sensors. This is the first report showing the possibility of exfoliating planar morphologies of metal chalcogenide compounds such as orthorhombic Bi2S3, even if their stratified crystal structures constitute van der Waals forces within the fundamental planes.

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Subjects
Chemical Sciences | Chemical sensors | Crosslinking | Exfoliation process | Field-effect devices | Metal chalcogenide | Morphological analysis | Morphology | Nanosheets | Physical Chemistry (Incl. Structural) | Physical Chemistry Not Elsewhere Classified | Top down approaches | Two-dimensional materials | Ultrathin nanosheets | Van der Waals forces Corrugated sheets |

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  • Local : 3ab2383b8c1a6be4acc45679b153186e
ACN 633 798 857