TiO2-supported copper nanoparticles prepared via ion exchange for photocatalytic hydrogen production
| Autor: | Jason Scott, Charlene Ng, Hao Tian, Xiaoli Zhang, Rose Amal |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Copper oxide
Materials science Ion exchange Renewable Energy Sustainability and the Environment Inorganic chemistry chemistry.chemical_element Nanoparticle General Chemistry Copper chemistry.chemical_compound chemistry Photocatalysis General Materials Science Temperature-programmed reduction Hydrogen production |
| Zdroj: | J. Mater. Chem. A. 2:6432-6438 |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | Ion exchange (IE) has been used to prepare Cu/TiO2 for photocatalytic hydrogen generation. The IE Cu/TiO2 particles comprised a mixture of large and fine copper/copper oxide deposits which were well dispersed across the TiO2 surface. Hydrogen generation photoactivity by the IE Cu/TiO2 was ∼44% greater than the activity displayed by Cu/TiO2 prepared via wet impregnation (WI) at a similar copper loading. Temperature programmed reduction studies indicated the IE Cu/TiO2 possessed a greater portion of highly dispersed fine copper deposits than the WI Cu/TiO2 which may account for the higher photoactivity. The hydrogen generation activity of IE Cu/TiO2 was maintained over three 5 h reaction cycles. |
| Databáze: | OpenAIRE |
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