气相
催化作用
材料科学
相(物质)
化学工程
化学
物理化学
有机化学
工程类
作者
Celia M. Rueda-Navarro,Zahraa Abou Khalil,Arianna Melillo,Belén Ferrer,Raúl Montero,Asier Longarte,Marco Daturi,Ignacio Vayá,Mohamad El‐Roz,Virginia Martínez‐Martínez,Herme G. Baldoví,Sergio Navalón
标识
DOI:10.1021/acscatal.4c00266
摘要
Solar-assisted CO2 conversion into fuels and chemical products involves a range of technologies aimed at driving industrial decarbonization methods. In this work, we report on the development of a series of multifunctional metal–organic frameworks (MOFs) based on nitro- or amino-functionalized UiO-66(M) (M: Zr or Zr/Ti) supported RuOx NPs as photocatalysts, having different energy band level diagrams, for CO2 hydrogenation under simulated concentrated sunlight irradiation. RuOx(1 wt %; 2.2 ± 0.9 nm)@UiO-66(Zr/Ti)-NO2 was found to be a reusable photocatalyst, to be selective for CO2 methanation (5.03 mmol g–1 after 22 h;, apparent quantum yield at 350, 400, and 600 nm of 1.67, 0.25, and 0.01%, respectively), and to show about 3–6 times activity compared with previous investigations. The photocatalysts were characterized by advanced spectroscopic techniques like femto- and nanosecond transient absorption, spin electron resonance, and photoluminescence spectroscopies together with (photo)electrochemical measurements. The photocatalytic CO2 methanation mechanism was assessed by operando FTIR spectroscopy. The results indicate that the most active photocatalyst operates under a dual photochemical and photothermal mechanism. This investigation shows the potential of multifunctional MOFs as photocatalysts for solar-driven CO2 recycling.
科研通智能强力驱动
Strongly Powered by AbleSci AI