Abstract
The development of an eco-friendly and economical synthetic pathway of nanomaterials such as metal nanoparticles and nanoporous metals remains a challenging topic in the field of nanomaterials. Here we report a novel and eco-friendly series of synthetic methods from the preparation of metal nanoparticles to the fabrication of hierarchical porous metals by using partial film boiling phenomena established by a reactor with the inverse configuration of conventional Leidenfrost drop reactors, which is much more favorable to large-scale production than conventional Leidenfrost drop reactors. As a result, we have revealed two important facts, which can offer fresh vision to the field of metal nanoparticle and nanoporous metal synthesis. The first one is that Pd and Pt precursor can be reduced to neutral Pd and Pt nanoparticles under basic condition established by partial film boiling phenomena without reducing agents such as ethanol and citric acid. The second one is that when citric acid and ethanol as a mild ...
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