One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase
A cobalt hydroxide (Co(OH)2) nanoflake-reduced graphene oxide (rGO) hybrid was synthesized by a onepot hydrothermal method using glucose as a reducing agent for graphene oxide (GO) reduction. The structural and surface properties of the material were investigated by scanning and transmission electro...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Academic Press
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/14759 |
| _version_ | 1848748709295161344 |
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| author | Yao, Yunjin Xu, C. Miao, S. Sun, Hongqi Wang, Shaobin |
| author_facet | Yao, Yunjin Xu, C. Miao, S. Sun, Hongqi Wang, Shaobin |
| author_sort | Yao, Yunjin |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A cobalt hydroxide (Co(OH)2) nanoflake-reduced graphene oxide (rGO) hybrid was synthesized by a onepot hydrothermal method using glucose as a reducing agent for graphene oxide (GO) reduction. The structural and surface properties of the material were investigated by scanning and transmission electron microscopies, energy-dispersive X-ray spectrometry, powder X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Catalytic activities of GO, rGO, Co(OH)2 and Co(OH)2–rGOin aqueous phenol degradation using peroxymonosulfate as an oxidant were compared. A synergetic effect on the catalytic activity was found on the Co(OH)2–rGO hybrid. Although rGO has weak catalytic activity, Co(OH)2–rGO hybrid showed a higher catalytic activity than Co(OH)2. The phenol degradation on Co(OH)2–rGO was extremely fast and took around 10 min for 100% phenol removal. The degradation was found to follow the first order kinetics and a mechanism for phenol degradation was presented. |
| first_indexed | 2025-11-14T07:09:21Z |
| format | Journal Article |
| id | curtin-20.500.11937-14759 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:09:21Z |
| publishDate | 2013 |
| publisher | Academic Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-147592019-02-19T05:34:54Z One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase Yao, Yunjin Xu, C. Miao, S. Sun, Hongqi Wang, Shaobin Water treatment Catalytic oxidation Graphene Cobalt hydroxide Phenol A cobalt hydroxide (Co(OH)2) nanoflake-reduced graphene oxide (rGO) hybrid was synthesized by a onepot hydrothermal method using glucose as a reducing agent for graphene oxide (GO) reduction. The structural and surface properties of the material were investigated by scanning and transmission electron microscopies, energy-dispersive X-ray spectrometry, powder X-ray diffraction, Fourier transform infrared spectroscopy, and thermogravimetric analysis. Catalytic activities of GO, rGO, Co(OH)2 and Co(OH)2–rGOin aqueous phenol degradation using peroxymonosulfate as an oxidant were compared. A synergetic effect on the catalytic activity was found on the Co(OH)2–rGO hybrid. Although rGO has weak catalytic activity, Co(OH)2–rGO hybrid showed a higher catalytic activity than Co(OH)2. The phenol degradation on Co(OH)2–rGO was extremely fast and took around 10 min for 100% phenol removal. The degradation was found to follow the first order kinetics and a mechanism for phenol degradation was presented. 2013 Journal Article http://hdl.handle.net/20.500.11937/14759 10.1016/j.jcis.2013.03.070 Academic Press fulltext |
| spellingShingle | Water treatment Catalytic oxidation Graphene Cobalt hydroxide Phenol Yao, Yunjin Xu, C. Miao, S. Sun, Hongqi Wang, Shaobin One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase |
| title | One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase |
| title_full | One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase |
| title_fullStr | One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase |
| title_full_unstemmed | One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase |
| title_short | One-pot hydrothermal synthesis of Co(OH)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase |
| title_sort | one-pot hydrothermal synthesis of co(oh)2 nanoflakes on graphene sheets and their fast catalytic oxidation of phenol in liquid phase |
| topic | Water treatment Catalytic oxidation Graphene Cobalt hydroxide Phenol |
| url | http://hdl.handle.net/20.500.11937/14759 |