Palladium Nanoparticles Supported on B‐Doped Carbon Nanocage as Electrocatalyst toward Ethanol Oxidation Reaction

Abstract

Boron-doped carbon nanocage (BC-2) was used as carrier to anchor palladium nanoparticles and enhanced the catalytic performance for the ethanol oxidation reaction. The BC-2 was synthesized via thermal treatment the predesigned compound containing cobalt and boron at 900°C with the help of hydrogen and acid washing process. Palladium nanoparticles can be loaded on the BC-2 supports (Pd/BC-2) for ethanol oxide reaction (EOR). The BC-2 support has the following character-istics: (i) The hollow structure contains highly order nanoporous to offer more channel and space in catalysis process; (ii) borondoped carbon structures can supply abundant activity sites for stabilizing palladium nanoparticles; (iii) the unique three-dimensional architecture can prevent the agglomeration and inactivation of metal catalysts. The Pd/BC-2 catalyst displays higher catalytic activities 3614.11 mA mg À 1 toward the peak current density compared to that of Pd/C (804.39 mA mg À 1 ).

Toward Overcoming the Challenges in the Comparison of Different Pd Nanocatalysts: Case Study of the Ethanol Oxidation Reaction

“…In addition, results from our previous work estimated the ECSA around 92 m 2 •g −1 for a loading of 50 wt %, which confirms the trend observed here of a higher ECSA estimated with higher Pd loading [21]. Nevertheless, these ECSA values remain in the higher range of reported values for monometallic Pd catalysts more typically in the range 10-60 m 2 •g −1 [21,[39][40][41][42][43][44][45].…”

“…), it is not straightforward to rationalize the faster decrease in activity of the commercial catalyst vs. synthesized catalysts. Overall, the as-prepared catalysts maintained a relatively high activity >100 mA•mg −1 after 3600 s of chronoamperometry compared to most reported Pd catalysts that usually show a mass activity below 100 mA•mg −1 already after 1800 s of chronoamperometry [41,43,45,49].…”

“…x FOR PEER REVIEW 4 of 16 in the higher range of reported values for monometallic Pd catalysts more typically in the range 10-60 m 2 •g −1[21,[39][40][41][42][43][44][45].…”

Ultrafine Rh nanocrystals grown onto a boron and nitrogen codoped carbon support with a horn-shaped structure for highly efficient methanol oxidation

“…The B and N contents in the Rh/BNCNH framework are determined to be 1.5 and 2.7 at%, which are similar to those reported for B-doped or N-doped nanocarbon materials. 36,37 Fig. 4a reveals different B-related energy peaks centered at 191.8 and 192.8 eV, which are linked to the B-C3/B-N and B-C-O groups.…”

Replacing Anodic Oxygen Evolution Reaction with Organic ­Oxidation: The Importance of Metal (Oxy)Hydroxide Formation as the Active Oxidation Catalyst

“…The activity of electrocatalytic organic oxidation and the selectivity for the value-added product formation is largely varied, with the catalysts having different morphology, 54 crystal structure, 55 phases, 56 electronic structure, 56 etc. 57 In addition, the applied anodic potential and pH of the medium have a significant effect. 33 In the case of a heterogeneous catalyst, the adsorption and desorption properties toward the reactant, intermediate, and product govern the activity and selectivity of the catalyst.…”