Abstract
Abstract Novel Ti-KIT-6 materials with different Si/Ti ratios (200, 100 and 50) have been synthesized, characterized and applied for the photocatalytic reduction of carbon dioxide to methane. An intermediate amount of Ti(Si/Ti = 100) was found to be isolated and uniformly distributed, without collapsing the KIT-6 structure. TiO 2 formation was observed due to a higher amount of Ti(Si/Ti = 50). Overall, the Ti-KIT-6 (calcined) materials were superior in activity than the Ti-KIT-6 (dried) materials. Owing to the greater number of OH groups, the Si/Ti ratio of 100 showed a higher methane production rate and was found to be more reactive than commercial Degussa P25 TiO 2 .
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