EFFICIENT HYDROGEN GENERATION FROM LIQUID CHEMICAL HYDROGEN STORAGE MATERIALS OVER FUNCTIONAL SUPPORTED METAL NANOPARTICLES AT ROOM TEMPERATURE

摘要

Hydrogen has attracted considerable attention as an ideal alternative to petrochemical energy. Currently, searching for effective hydrogen storage materials and methods for hydrogen generation in safe and efficient ways remains one of the most difficult challenges toward a fuel-cell-based hydrogen economy.4 Among the various hydrogen materials, ammonia borane (NH3BH3, AB) and formic acid (HCOOH, FA) are regarded as two of the most promising candidates for the storage of hydrogen since they are stable and non-toxic at ambient temperature and had high hydrogen contents of 19.6 and 7.9 wt%, respectively. For hydrogen-based energy application, it is desirable to develop high-performance heterogeneous catalysts for dehydrogenation from AB and FA at mild conditions. Although some progress has been achieved in this aspect, there is still no remarkable enhancement on the activities of catalysts, especially metal nanoparticles (NPs). Herein, from the viewpoint of tuning the size of active metal NPs and the electronic state of catalytic active metal NPs supported by porous materials containing functional groups, we reported a series of supported metal NPs, which exhibited enhanced catalytic activities for hydrogen generation from AB and FA at room temperature.