title: Immobilizing Extremely Catalytically Active Palladium Nanoparticles to Carbon Nanospheres: A Weakly-Capping Growth Approach.
abstract: Ultrafine palladium nanoparticles (Pd NPs) supported on carbon nanospheres have been successfully synthesized using a facile methanol-mediated weakly-capping growth approach (WCGA) with anhydrous methanol as a mild reductant and a weakly capping agent. The Pd NPs show exceedingly high catalytic activity for 100% selective dehydrogenation of aqueous formic acid (FA) at ambient temperatures. The small size and clean surface of the Pd NPs greatly improve the catalytic properties of the as-prepared catalyst, providing an average rate of CO-free H2 generation up to 43 L H2 gPd(-1) min(-1) and a turnover frequency of 7256 h(-1) at 60 °C. These values are much higher than those obtained even with the most active catalyst reported thus far for heterogeneously catalyzed dehydrogenation of FA. This remarkably facile and effective methanol-mediated WCGA provides a powerful entry into ultrafine metal NPs with clean surface to achieve enhanced performance. Moreover, the catalytic results open up new avenues in the effective applications of FA for hydrogen storage.
authors: National Institute of Advanced Industrial Science and Technology (AIST) , Ikeda, Osaka 563-8577, Japan.
authors: Qi-Long
authors: QL
authors: Zhu
authors: National Institute of Advanced Industrial Science and Technology (AIST) , Ikeda, Osaka 563-8577, Japan.|Toyama National College of Technology , 13, Hongo-machi, Toyama, 939-8630, Japan.
authors: Nobuko
authors: N
authors: Tsumori
authors: National Institute of Advanced Industrial Science and Technology (AIST) , Ikeda, Osaka 563-8577, Japan.
authors: Qiang
authors: Q
authors: Xu