Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation
Physical and chemical activation of reduced graphene oxide (RGO) using different reagents, CO2, ZnCl2 and CO2/ZnCl2, to obtain highly porous and metal-free carbonaceous materials was carried out and their adsorption and catalytic behavior were investigated. Physical activation using CO2 was proved t...
| Main Authors: | , , , |
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| Format: | Journal Article |
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R S C Publications
2014
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| Online Access: | http://purl.org/au-research/grants/arc/DP130101319 http://hdl.handle.net/20.500.11937/12350 |
| _version_ | 1848748051917701120 |
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| author | Liu, S. Peng, Wenchao Sun, Hongqi Wang, Shaobin |
| author_facet | Liu, S. Peng, Wenchao Sun, Hongqi Wang, Shaobin |
| author_sort | Liu, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Physical and chemical activation of reduced graphene oxide (RGO) using different reagents, CO2, ZnCl2 and CO2/ZnCl2, to obtain highly porous and metal-free carbonaceous materials was carried out and their adsorption and catalytic behavior were investigated. Physical activation using CO2 was proved to be much more effective than chemical ZnCl2 activation, and increased the specific surface area (SSA) of RGO from ~200 to higher than 600 m2 g-1. Methylene blue (MB) was then used to evaluate the adsorption and catalytic activity of the activated RGO (A-RGO) materials with peroxymonosulfate (PMS) as an oxidant. It was found that the SSA and oxygen containing groups are two important factors determining the adsorptive and catalytic performance of the A-RGO materials. RGO by physicochemical CO2/ZnCl2 activation presented the best adsorption and RGO by physical CO2 activation exhibited the highest catalytic degradation of MB. |
| first_indexed | 2025-11-14T06:58:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-12350 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:58:54Z |
| publishDate | 2014 |
| publisher | R S C Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-123502022-10-06T06:29:28Z Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation Liu, S. Peng, Wenchao Sun, Hongqi Wang, Shaobin Physical and chemical activation of reduced graphene oxide (RGO) using different reagents, CO2, ZnCl2 and CO2/ZnCl2, to obtain highly porous and metal-free carbonaceous materials was carried out and their adsorption and catalytic behavior were investigated. Physical activation using CO2 was proved to be much more effective than chemical ZnCl2 activation, and increased the specific surface area (SSA) of RGO from ~200 to higher than 600 m2 g-1. Methylene blue (MB) was then used to evaluate the adsorption and catalytic activity of the activated RGO (A-RGO) materials with peroxymonosulfate (PMS) as an oxidant. It was found that the SSA and oxygen containing groups are two important factors determining the adsorptive and catalytic performance of the A-RGO materials. RGO by physicochemical CO2/ZnCl2 activation presented the best adsorption and RGO by physical CO2 activation exhibited the highest catalytic degradation of MB. 2014 Journal Article http://hdl.handle.net/20.500.11937/12350 10.1039/c3nr04282k http://purl.org/au-research/grants/arc/DP130101319 R S C Publications restricted |
| spellingShingle | Liu, S. Peng, Wenchao Sun, Hongqi Wang, Shaobin Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation |
| title | Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation |
| title_full | Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation |
| title_fullStr | Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation |
| title_full_unstemmed | Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation |
| title_short | Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation |
| title_sort | physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation |
| url | http://purl.org/au-research/grants/arc/DP130101319 http://hdl.handle.net/20.500.11937/12350 |