Titania-Supported Gold Nanoparticles as Efficient Catalysts for the Oxidation of Cellobiose to Organic Acids in Aqueous Medium
Amaniampong, PN; Li, K; Jia, X; Wang, Bo; Borgna, A; Yang, Y
| HERO ID | 2521268 |
|---|---|
| In Press | No |
| Year | 2014 |
| Title | Titania-Supported Gold Nanoparticles as Efficient Catalysts for the Oxidation of Cellobiose to Organic Acids in Aqueous Medium |
| Authors | Amaniampong, PN; Li, K; Jia, X; Wang, Bo; Borgna, A; Yang, Y |
| Journal | ChemCatChem |
| Volume | 6 |
| Issue | 7 |
| Page Numbers | 2105-2114 |
| Abstract | Titania-supported gold nanoparticles were prepared by using the deposition-precipitation method, followed by reduction under a hydrogen flow. The catalytic activity of these as-prepared catalysts was explored in the oxidation of cellobiose to gluconic acid with molecular oxygen, and the properties of these catalysts were examined by using XRD, TEM, temperature-programmed desorption of NH3, energy-dispersive X-ray spectroscopy, UV/Vis, and X-ray photoemission spectroscopy (XPS). The catalyst sample reduced at high temperature demonstrated an excellent catalytic activity in the oxidation of cellobiose. The characterization results revealed the strong metal-support interaction between the gold nanoparticles and titania support. Hydrogen reduction at higher temperatures (usually >600 degrees C) plays a vital role in affording a unique interface between gold nanoparticles and titania support surfaces, which thus improves the catalytic activity of gold/titania by fine-tuning both the electronic and structural properties of the gold nanoparticles and titania support. |
| Doi | 10.1002/cctc.201402096 |
| Wosid | WOS:000340573200036 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | bifunctional catalysts; oxidation; gluconic acid; gold; titania |