Mateo Diego, Maity Partha, Shterk Genrikh, Mohammed Omar F, Gascon Jorge
KAUST Catalysis Center (KCC), Advanced Catalytic Materials, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
ChemSusChem. 2021 Dec 17;14(24):5525-5533. doi: 10.1002/cssc.202101950. Epub 2021 Nov 23.
Photo-thermal catalysis has recently emerged as a promising alternative to overcome the limitations of traditional photocatalysis. Despite its potential, most of the photo-thermal systems still lack adequate selectivity patterns and appropriate analysis of the underlying reaction pathways, thus hampering a wide implementation. Herein, a novel photocatalyst based on Pd nanoparticles (NPs) supported on barium titanate (BTO) was prepared for the selective photo-thermal reduction of CO and displayed catalytic rates of up to 8.2 mol g h . The photocatalyst allowed for a tailored selectivity towards CO or CH as a function of the metal loading or the light intensity. Mechanistic studies indicated that both thermal and non-thermal contributions of light played a role in the overall reaction pathway, each of them being dominant upon changing reaction conditions.
光热催化最近已成为一种有前景的替代方法，以克服传统光催化的局限性。尽管具有潜力，但大多数光热系统仍然缺乏足够的选择性模式以及对潜在反应途径的适当分析，从而阻碍了其广泛应用。在此，制备了一种基于负载在钛酸钡（BTO）上的钯纳米颗粒（NPs）的新型光催化剂，用于CO的选择性光热还原，其催化速率高达8.2 mol g h 。该光催化剂能够根据金属负载量或光强度对CO或CH进行定制选择性。机理研究表明，光的热贡献和非热贡献在整个反应途径中都起作用，在改变反应条件时，它们各自起主导作用。
