Structure dependence of gas sensing responsivity on graphene nanoribbons covered TiO2 nanotubes, nano-bugles array.
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| Title: | Structure dependence of gas sensing responsivity on graphene nanoribbons covered TiO |
|---|---|
| Authors: | Huang, Bohr-Ran1 (AUTHOR), Chen, Yu-Jyun1 (AUTHOR), Hung, Shang-Chao2,3 (AUTHOR) schung99@gmail.com |
| Source: | Journal of Materials Science: Materials in Electronics. Mar2022, Vol. 33 Issue 9, p6082-6094. 13p. |
| Subjects: | Nanoribbons, Graphene, Nanotubes, Raman spectroscopy, Titanium dioxide, Gases, Halloysite |
| Abstract: | Titrating various amount of graphene nanoribbons on titanium dioxide nanotubes (Gr/TNTs) and nano-bugles (Gr/TNBs) with different apertures to form composite nanostructures, and using them as gas sensing layers, have been achieved successfully and confirmed by FESEM observation, Raman spectra comparisons, XRD and FTIR measurements. The Gr/TNBs sensors show higher hydrogen gas response than corresponding Gr/TNTs sensors over the 100–2000 ppm range; this suggests that altering sensing morphology can improve gas sensing capability. A composition effect is found on Gr/TNBs sensors, and this effect is more pronounced with higher graphene concentration. On the other hand, heavier graphene content on Gr/TNTs sensors does not seem to affect their sensing capability much. Also, measuring hydrogen gas sensitivity under fixed gas concentration for 40 V Gr/TNB sensors shows a strong linear correlation between graphene concentration and responsivity. Yet measurement on 40 V Gr/TNTs sensors, at relatively low gas concentration of 100 ppm, shows that increase in graphene content hardly affects their responsivity. Gr/TNTs sensors fabricated with both smaller and larger tubular apertures produce this same result, too. Lastly, gas diffusion interactions between two-dimensional layered graphene structure and various geometries of TiO2 are fully discussed. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 155626748 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Structure dependence of gas sensing responsivity on graphene nanoribbons covered TiO<subscript>2</subscript> nanotubes, nano-bugles array. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Huang%2C+Bohr-Ran%22">Huang, Bohr-Ran</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Yu-Jyun%22">Chen, Yu-Jyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hung%2C+Shang-Chao%22">Hung, Shang-Chao</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> schung99@gmail.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Mar2022, Vol. 33 Issue 9, p6082-6094. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Nanoribbons%22">Nanoribbons</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene%22">Graphene</searchLink><br /><searchLink fieldCode="DE" term="%22Nanotubes%22">Nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22Raman+spectroscopy%22">Raman spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+dioxide%22">Titanium dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Gases%22">Gases</searchLink><br /><searchLink fieldCode="DE" term="%22Halloysite%22">Halloysite</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Titrating various amount of graphene nanoribbons on titanium dioxide nanotubes (Gr/TNTs) and nano-bugles (Gr/TNBs) with different apertures to form composite nanostructures, and using them as gas sensing layers, have been achieved successfully and confirmed by FESEM observation, Raman spectra comparisons, XRD and FTIR measurements. The Gr/TNBs sensors show higher hydrogen gas response than corresponding Gr/TNTs sensors over the 100–2000 ppm range; this suggests that altering sensing morphology can improve gas sensing capability. A composition effect is found on Gr/TNBs sensors, and this effect is more pronounced with higher graphene concentration. On the other hand, heavier graphene content on Gr/TNTs sensors does not seem to affect their sensing capability much. Also, measuring hydrogen gas sensitivity under fixed gas concentration for 40 V Gr/TNB sensors shows a strong linear correlation between graphene concentration and responsivity. Yet measurement on 40 V Gr/TNTs sensors, at relatively low gas concentration of 100 ppm, shows that increase in graphene content hardly affects their responsivity. Gr/TNTs sensors fabricated with both smaller and larger tubular apertures produce this same result, too. Lastly, gas diffusion interactions between two-dimensional layered graphene structure and various geometries of TiO2 are fully discussed. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10854-022-07786-w Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 6082 Subjects: – SubjectFull: Nanoribbons Type: general – SubjectFull: Graphene Type: general – SubjectFull: Nanotubes Type: general – SubjectFull: Raman spectroscopy Type: general – SubjectFull: Titanium dioxide Type: general – SubjectFull: Gases Type: general – SubjectFull: Halloysite Type: general Titles: – TitleFull: Structure dependence of gas sensing responsivity on graphene nanoribbons covered TiO2 nanotubes, nano-bugles array. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Huang, Bohr-Ran – PersonEntity: Name: NameFull: Chen, Yu-Jyun – PersonEntity: Name: NameFull: Hung, Shang-Chao IsPartOfRelationships: – BibEntity: Dates: – D: 21 M: 03 Text: Mar2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 09574522 Numbering: – Type: volume Value: 33 – Type: issue Value: 9 Titles: – TitleFull: Journal of Materials Science: Materials in Electronics Type: main |
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