Table 1. Onset potentials and current densities at –0.4 V and –0.3 V of the meso-PdNPs-4%, meso-PdNPs-12%, and PdB catalysts during the LSV tests.

Catalyst	E onset (V vs. Hg/HgO)	j at –0.4 V (A mg–1_Pd)	j at –0.3 V (A mg–1_Pd)
meso-PdNPs-4%	–0.55	0.22	0.79
meso-PdNPs-12%	–0.55	0.16	0.50
PdB	–0.48	0.026	0.117