Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy
In this work, an application of UV spectroscopy for facile prediction of liquid –exfoliated graphene size is discussed. Dynamic light scattering method was used to estimate the graphene flake size (<d> whilst UV spectroscopy measurement was carried out for extinction coefficient value (ε) dete...
| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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AIP Publishing LLC
2016
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| Online Access: | http://umpir.ump.edu.my/id/eprint/13864/ http://umpir.ump.edu.my/id/eprint/13864/1/Facile%20method%20for%20liquid-exfoliated%20graphene%20size%20prediction%20by%20UV-visible%20spectroscopy.pdf |
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| author | Zulhelmi, Ismail Kamal, Yusoh |
| author_facet | Zulhelmi, Ismail Kamal, Yusoh |
| author_sort | Zulhelmi, Ismail |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | In this work, an application of UV spectroscopy for facile prediction of liquid –exfoliated graphene size is discussed. Dynamic light scattering method was used to estimate the graphene flake size (<d> whilst UV spectroscopy measurement was carried out for extinction coefficient value (ε) determination. It was found that the value of (ε) decreased gradually as the graphene size was further reduced after intense sonication time (7h). This observation showed the influence of sonication time on electronic structure of graphene. A mathematical equation was derived from log-log graph for correlation between (<d>) and (ε) value. Both values can be expressed in a single equation as (<d> = (3.4 × 10−2) ε1.2). |
| first_indexed | 2025-11-15T01:55:46Z |
| format | Conference or Workshop Item |
| id | ump-13864 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T01:55:46Z |
| publishDate | 2016 |
| publisher | AIP Publishing LLC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-138642018-12-31T08:40:56Z http://umpir.ump.edu.my/id/eprint/13864/ Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy Zulhelmi, Ismail Kamal, Yusoh TP Chemical technology TS Manufactures In this work, an application of UV spectroscopy for facile prediction of liquid –exfoliated graphene size is discussed. Dynamic light scattering method was used to estimate the graphene flake size (<d> whilst UV spectroscopy measurement was carried out for extinction coefficient value (ε) determination. It was found that the value of (ε) decreased gradually as the graphene size was further reduced after intense sonication time (7h). This observation showed the influence of sonication time on electronic structure of graphene. A mathematical equation was derived from log-log graph for correlation between (<d>) and (ε) value. Both values can be expressed in a single equation as (<d> = (3.4 × 10−2) ε1.2). AIP Publishing LLC 2016-07 Conference or Workshop Item PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/13864/1/Facile%20method%20for%20liquid-exfoliated%20graphene%20size%20prediction%20by%20UV-visible%20spectroscopy.pdf Zulhelmi, Ismail and Kamal, Yusoh (2016) Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy. In: AIP Conference Proceedings: 2nd International Conference on Functional Materials and Metallurgy (ICoFM 2016) , 28 May 2016 , Penang, Malaysia. pp. 1-5., 1756 (070002). ISSN 0094-243X ISBN 978-0-7354-1414-3 (Published) http://dx.doi.org/10.1063/1.4958778 DOI: 10.1063/1.4958778 |
| spellingShingle | TP Chemical technology TS Manufactures Zulhelmi, Ismail Kamal, Yusoh Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy |
| title | Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy |
| title_full | Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy |
| title_fullStr | Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy |
| title_full_unstemmed | Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy |
| title_short | Facile Method for Liquid-exfoliated Graphene Size Prediction by UV-visible Spectroscopy |
| title_sort | facile method for liquid-exfoliated graphene size prediction by uv-visible spectroscopy |
| topic | TP Chemical technology TS Manufactures |
| url | http://umpir.ump.edu.my/id/eprint/13864/ http://umpir.ump.edu.my/id/eprint/13864/ http://umpir.ump.edu.my/id/eprint/13864/ http://umpir.ump.edu.my/id/eprint/13864/1/Facile%20method%20for%20liquid-exfoliated%20graphene%20size%20prediction%20by%20UV-visible%20spectroscopy.pdf |