Au/Pt co-loaded ultrathin TiO2 nanosheets for photocatalyzed H-2 evolution by the synergistic effect of plasmonic enhancement and co-catalysis

作者：Chen, Changyu; Kuai, Long; Chen, Yanjun; Wang, Qing; Kan, Erjie; Geng, Baoyou^*

来源：RSC Advances, 2015, 5(119): 98254-98259.

DOI：10.1039/c5ra17732d

• HYDROGEN-PRODUCTION
• TITANIUM-DIOXIDE
• HIGH PERCENTAGE
• WATER
• SOLAR
• GOLD
• NANOPARTICLES
• MECHANISMS
• NANOTUBES
• GRAPHENE

Co-catalysis and plasmonic enhancement are two efficient ways to improve the photocatalytic performance of semiconductors. In this work, we systematically investigate their synergistic functions by photo-depositing Au and Pt nanoparticles on the surface of ultrathin TiO2 nanosheets, where Au stimulates the plasmonic effect and Pt acts as the co-catalyst. It was found that both Au and Pt deposition can increase the H-2 production rate. More importantly, faster H-2 production can be obtained with the co-loading of Au and Pt. Furthermore, a suitable Au loading was important for the photocatalytic performance. As a consequence, the highest H-2 rate of 7.19 mmol g(-1) h(-1) was achieved by depositing 0.75% Pt and 0.5% Au on TiO2. Therefore, this work presents the synergistic effect between the plasmonic enhancement of Au and the co-catalysis of Pt for photocatalytic H-2 production, which contributes some guidance to catalyst design and preparation.

• 出版日期2015
• 单位安徽师范大学