| Title |
Methanol photo-reforming with water on pure titania for hydrogen production |
| ID_Doc |
8842 |
| Authors |
Bowker, M; Jones, W |
| Title |
Methanol photo-reforming with water on pure titania for hydrogen production |
| Year |
2020 |
| Published |
Philosophical Transactions Of The Royal Society A-Mathematical Physical And Engineering Sciences, 378.0, 2176 |
| DOI |
10.1098/rsta.2020.0058 |
| Abstract |
The behaviour of titania for the photo-reforming of methanol with water at ambient temperature has been examined. It is shown that the reactivity is very poor, compared with metal-loaded catalysts at low methanol levels in solution, but the rate becomes much higher at high methanol levels, such that the difference from metal-loaded samples is much less. The optimum yield is with approximately a 1:1 methanol/water solution. The reaction also proceeds well in the gas phase. During all such catalysis, the titania becomes blue, due to light absorption increasing across the range 400-800nm. However, this does not result in visible range activity for the photo-reforming and is due to the reduction of the material in the presence of light and the formation of anion vacancies and Ti3+ centres. These anion vacancies are only very slowly re-oxidized in air on P25 titania, taking days to recover the original whiteness of the oxide. The performance of anatase, rutile and the mixed phase is compared. This article is part of a discussion meeting issue 'Science to enable the circular economy'. |
| Author Keywords |
photocatalysis; titania; methanol; water splitting; hydrogen production |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000549913400010 |
| WoS Category |
Multidisciplinary Sciences |
| Research Area |
Science & Technology - Other Topics |
| PDF |
https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2020.0058
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