Immobilizing palladium nanoparticles on boron-oxygen-functionalized carbon nanospheres towards efficient hydrogen generation from formic acid
boron-oxygen functionalization, palladium, formic acid, heterogeneous catalysis, hydrogen generation, carbon nanosphere
Carbon nanospheres (XC-72R) were functionalized by boron-oxygen (B-O) through coannealing with boric acid, to which highly dispersed palladium nanoparticles (Pd NPs) (~ 1.7 nm) were immobilized by a wet chemical reduction for the first time. The resultant Pd/OB-C catalyst exhibits significantly improved activity for the dehydrogenation from formic acid (FA) compared to pristine XC-72R supported Pd NPs (Pd/C). Impressively, by adding melamine precursor, the B-O and nitrogen (N)-functionalized product OB-C-N displays an extremely high B content, ca. 34 times higher than OB-C. The Pd/OB-C-N catalyst with an ultrafine Pd particle size of ~ 1.4 nm shows a superb activity, with a turnover frequency (TOF) as high as 5,354 h−1 at 323 K, owing to the uniform ultrafine Pd NPs and the effect from B-O and N functionalities.
Tsinghua University Press
Shan Zhong,Nobuko Tsumori,Mitsunori Kitta,Qiang Xu, Immobilizing palladium nanoparticles on boron-oxygen-functionalized carbon nanospheres towards efficient hydrogen generation from formic acid. NanoRes.2019, 12(12): 2966–2970