Journal
NANO RESEARCH
Volume 12, Issue 12, Pages 2966-2970Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-019-2539-9
Keywords
boron-oxygen functionalization; palladium; formic acid; heterogeneous catalysis; hydrogen generation; carbon nanosphere
Categories
Funding
- AIST
- Ministry of Education, Culture, Sports, Science and Technology-Japan (MEXT)
- METI
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Carbon nanospheres (XC-72R) were functionalized by boron-oxygen (B-O) through coannealing with boric acid, to which highly dispersed palladium nanoparticles (Pd NPs) (similar to 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 similar to 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.
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