The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods
Nano graphene oxide (NGO) was produced by further refluxing graphene oxide (GO) sheets in HNO3, and carboxylic acid functionalized graphene oxide (GO–COOH) was obtained by a simple etherification reaction between GO and chloroacetic acid. The GO, GO–COOH and NGO sheets are combined with TiO2 nanorod...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/98647 http://hdl.handle.net/10220/17526 |
| _version_ | 1826111784178679808 |
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| author | Liu, Jincheng Xu, Shiping Liu, Lei Sun, Darren Delai |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Liu, Jincheng Xu, Shiping Liu, Lei Sun, Darren Delai |
| author_sort | Liu, Jincheng |
| collection | NTU |
| description | Nano graphene oxide (NGO) was produced by further refluxing graphene oxide (GO) sheets in HNO3, and carboxylic acid functionalized graphene oxide (GO–COOH) was obtained by a simple etherification reaction between GO and chloroacetic acid. The GO, GO–COOH and NGO sheets are combined with TiO2 nanorods by a two-phase assembling method, and confirmed by transmission electronic microscopy. The GO–TiO2, GO–COOH–TiO2 and NGO–TiO2 composites are used in a comparative study of photocatalytic H2 generation activity under UV light irradiation. The H2 generation rate of TiO2 nanorods was slightly increased from 15 to 30 mL h−1 g−1 by replacing oleic acid ligands with hydrophilic dopamine, and significantly increased to 105 mL h−1 g−1 after combining with GO sheets. The further comparative study shows that GO–COOH–TiO2 composite has higher H2 generation rate of 180 mL h−1 g−1 than that of GO–TiO2 and NGO–TiO2 composites. |
| first_indexed | 2024-10-01T02:56:29Z |
| format | Journal Article |
| id | ntu-10356/98647 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:56:29Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/986472020-03-07T11:43:35Z The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods Liu, Jincheng Xu, Shiping Liu, Lei Sun, Darren Delai School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering Nano graphene oxide (NGO) was produced by further refluxing graphene oxide (GO) sheets in HNO3, and carboxylic acid functionalized graphene oxide (GO–COOH) was obtained by a simple etherification reaction between GO and chloroacetic acid. The GO, GO–COOH and NGO sheets are combined with TiO2 nanorods by a two-phase assembling method, and confirmed by transmission electronic microscopy. The GO–TiO2, GO–COOH–TiO2 and NGO–TiO2 composites are used in a comparative study of photocatalytic H2 generation activity under UV light irradiation. The H2 generation rate of TiO2 nanorods was slightly increased from 15 to 30 mL h−1 g−1 by replacing oleic acid ligands with hydrophilic dopamine, and significantly increased to 105 mL h−1 g−1 after combining with GO sheets. The further comparative study shows that GO–COOH–TiO2 composite has higher H2 generation rate of 180 mL h−1 g−1 than that of GO–TiO2 and NGO–TiO2 composites. 2013-11-08T07:45:08Z 2019-12-06T19:58:05Z 2013-11-08T07:45:08Z 2019-12-06T19:58:05Z 2013 2013 Journal Article Liu, J., Xu, S., Liu, L., & Sun, D. D. (2013). The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods. Carbon, 60, 445-452. 0008-6223 https://hdl.handle.net/10356/98647 http://hdl.handle.net/10220/17526 10.1016/j.carbon.2013.04.059 en Carbon |
| spellingShingle | DRNTU::Engineering::Civil engineering Liu, Jincheng Xu, Shiping Liu, Lei Sun, Darren Delai The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods |
| title | The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods |
| title_full | The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods |
| title_fullStr | The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods |
| title_full_unstemmed | The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods |
| title_short | The size and dispersion effect of modified graphene oxide sheets on the photocatalytic H2 generation activity of TiO2 nanorods |
| title_sort | size and dispersion effect of modified graphene oxide sheets on the photocatalytic h2 generation activity of tio2 nanorods |
| topic | DRNTU::Engineering::Civil engineering |
| url | https://hdl.handle.net/10356/98647 http://hdl.handle.net/10220/17526 |
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