Pt nanoclusters stabilized by N-doped carbon nanofibers for hydrogen production from formic acid

Single Isolated Pd2+ Cations Supported on N-Doped Carbon as Active Sites for Hydrogen Production from Formic Acid Decomposition

“…A significant difference in the TOF values (up to 3 times) was obtained for the catalysts based on the N-doped catalysts as compared to the N-free ones. This was in line with our earlier studies of the Ru 25 and Pt 24 catalysts with the same mean particle sizes for the N-free and N-doped samples and 1 wt.% loading of metal supported on carbon nanofibers. To explain the nitrogen-doping effect for the studied Pd catalysts we also have to take into account that the mean Pd particle sizes and Pd particle size distributions (Figure 2, Figure S3, Supporting information) for the N-doped and Nfree Pd catalysts were very similar.…”

“…24 Arrigo et al 27 also noticed that coordination of Pd 2+ species to nitrogen of the support complicates the reduction of these species with hydrogen. Stonkus et al 29 confirmed that deposition of Pd on N-doped carbon nanofibers leads to a change of redox properties of Pd as compared to those for Pd supported on N-free carbon nanofibers.…”

“…The presence of nitrogen leads to stabilization of a supported phase, changing its chemical and electronic properties or even to creation of novel active sites for catalytic reactions. [24][25][26][27][28][29] Recently, Arrigo et al 27 reported a study of interaction of N-doped carbon nanotubes with Pd species deposited from Pd(NO 3 ) 2 and Na 2 PdCl 4 and of reactivity of the obtained catalysts in different reactions like oxygen reduction, CO oxidation and hydrogenation. Our present work is focused to understanding of the nature of Pd species active in decomposition of formic acid and the character of interaction of these Pd species with the N-doped carbon surface.…”

“…Recently, 24,25 we proposed that activation of formic acid may take place on pyridinic nitrogen sites of the support with the formation of adduct/formate species and their further decomposition on metallic nanoparticles existing in the proximity to the formate species.…”

Single Atoms of Pt-Group Metals Stabilized by N-Doped Carbon Nanofibers for Efficient Hydrogen Production from Formic Acid

“…For the preparation of 0.3Pt/N-CNFs, 1Pt/CNFs and 1Pt/N-CNFs catalysts, 0.3 and 1 wt.% of Pt were deposited by homogeneous precipitation from H 2 PtCl 6 with NaOH. 31 A known amount of acid was added to an aqueous 6 suspension of the support and stirred for 60 min at room temperature. Then, a stoichiometric amount of 0.5 M solution of NaOH was added drop-wise at room temperature.…”