Search

Metal organic frameworks (MOFs) have sparked a wave of research in the field of photocatalysis due to their ultrahigh specific surface area, porous sparse structure, and tunable topology and composition brought about by numerous metal centers/organic ligands. In this study, we first summarize and refine the basic design strategies of MOFs as photocatalysts and their modification strategies in enhancing photocatalytic performance from the perspective of heterogeneous photocatalysts. Subsequently, we review the recent research progress on the specific applications of MOFs in heterogeneous photocatalysis, i.e., photocatalytic degradation of water pollutants, photocatalytic water separation, and photocatalytic reduction of CO2, including the selection of design strategies and modification strategies for MOF-based photocatalysts, photocatalytic mechanisms, and parameters affecting the photocatalytic performance. In addition, this study highlights the mechanistic studies of MOF-based heterogeneous photocatalysts from different perspectives according to their specific applications and compares and refines the photocatalytic mechanistic studies in different fields through different techniques such as in situcharacterization and DFT as well as the commonalities and connections between different mechanistic studies. Finally, the disadvantages and advantages of heterogeneous photocatalysts based on MOFs, possible ending directions for existing problems, and possible key research directions for the future, are discussed.

Climate change is one of the major challenges the society is facing today, and has become a global non-traditional security issue that seriously threatens human survival and sustainable development. Therefore, the search for renewable and clean fuel is an important challenge for sustainable development of society. Herein, we discuss the application of localized surface plasmon resonance (LSPR) plasmonic nanoparticles (PNPs) in the carbon dioxide reduction reaction (CO2RR) regarding their basic principles, activation mechanisms and catalytic applications. The basic principles include the mechanism and activation process of LSPR with charge carriers. Activation mechanisms involve three main pathways including thermal charge carrier transfer, optical near-field enhancement and photothermal effect. Their catalytic applications contain differently modified and designed plasmonic photocatalysts. It is hoped that this review will help readers understand the complex catalytic mechanisms and provide new ideas for the design of LSPR photocatalysts. Moreover, hopefully this research can provide support for the development of Carbon Capture, Utilization and Storage (CCUS).

This study focuses on exploring the effects of Si–Al ratio, Pd loading, and the presence of C3H6on the performance of the Pd–SSZ-13 catalyst. When the Si–Al ratio is 15 and the Pd loading is 1%, the catalyst has the best adsorption performance. NO can be adsorbed in the form of NO+with the cation exchange sites through two different paths. The catalyst with a Si–Al ratio of 15 has the highest Pd2+content, so it can undergo oxidation–reduction reactions with NO to generate a large amount of NO+. A certain amount of Pd content can provide a large number of weak adsorption sites for NO and NO2, but when the Pd content increases, there will be too much palladium oxide material generated to cover the surface of the molecular sieve. C3H6competes with NO and then blocks the pores of the molecular sieve, making the active sites difficult to use.