Dye adsorption on layered graphite oxide
Graphite oxide (GO) was prepared by a modified Hummers−Offeman method and was tested as an adsorbent for the removal of dyes in aqueous solution. The structure of GO was characterized by N2 adsorption, X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy. It is found that GO...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
American Chemical Society
2011
|
| Online Access: | http://hdl.handle.net/20.500.11937/41734 |
| _version_ | 1848756226789212160 |
|---|---|
| author | Bradder, Philip Ling, Sie King Wang, Shaobin Liu, Shaomin |
| author_facet | Bradder, Philip Ling, Sie King Wang, Shaobin Liu, Shaomin |
| author_sort | Bradder, Philip |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Graphite oxide (GO) was prepared by a modified Hummers−Offeman method and was tested as an adsorbent for the removal of dyes in aqueous solution. The structure of GO was characterized by N2 adsorption, X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy. It is found that GO does not show a significant change in surface area, but the layered graphene structure was expanded, and several surface oxygen functional groups were formed, which play a significant role in adsorption. The amount of the dyes, methylene blue and malachite green, adsorbed on the GO was much higher than that on graphite, and the adsorption capacity based on the Langmuir isotherm is (351 and 248) mg·g−1, respectively, much higher than activated carbon. The adsorption mechanism was proposed as electrostatic attraction. |
| first_indexed | 2025-11-14T09:08:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-41734 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:08:50Z |
| publishDate | 2011 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-417342017-09-13T15:57:40Z Dye adsorption on layered graphite oxide Bradder, Philip Ling, Sie King Wang, Shaobin Liu, Shaomin Graphite oxide (GO) was prepared by a modified Hummers−Offeman method and was tested as an adsorbent for the removal of dyes in aqueous solution. The structure of GO was characterized by N2 adsorption, X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy. It is found that GO does not show a significant change in surface area, but the layered graphene structure was expanded, and several surface oxygen functional groups were formed, which play a significant role in adsorption. The amount of the dyes, methylene blue and malachite green, adsorbed on the GO was much higher than that on graphite, and the adsorption capacity based on the Langmuir isotherm is (351 and 248) mg·g−1, respectively, much higher than activated carbon. The adsorption mechanism was proposed as electrostatic attraction. 2011 Journal Article http://hdl.handle.net/20.500.11937/41734 10.1021/je101049g American Chemical Society restricted |
| spellingShingle | Bradder, Philip Ling, Sie King Wang, Shaobin Liu, Shaomin Dye adsorption on layered graphite oxide |
| title | Dye adsorption on layered graphite oxide |
| title_full | Dye adsorption on layered graphite oxide |
| title_fullStr | Dye adsorption on layered graphite oxide |
| title_full_unstemmed | Dye adsorption on layered graphite oxide |
| title_short | Dye adsorption on layered graphite oxide |
| title_sort | dye adsorption on layered graphite oxide |
| url | http://hdl.handle.net/20.500.11937/41734 |