PdAu Nanoparticles Supported on CeO 2 Hybridized Hollow Mesoporous Carbon Spheres With Low Temperature Oxidation for Formic Acid Dehydrogenation
Jian Wang, Youlin Liu, Zongchang Zhang, Yingying Qian, Lei Dong, Yuesong ShenABSTRACT
In this study, PdAu nanoparticles anchored on CeO 2 hybridized hollow mesoporous carbon sphere (PdAu‐CeO 2 /OHCS) has been fabricated by nanocasting, low temperature oxidation, and wet chemistry approach. As‐prepared PdAu‐CeO 2 /OHCS catalyst exhibits excellent catalytic activity for the formic acid dehydrogenation (FAD) without additives, showing a high initial turnover frequency (TOF) of 4104 h −1 at 298 K and initial superior TOF of 15988 h −1 at 323 K. This outstanding catalytic activity can be attributed to the fact that low‐temperature oxidation can enhance the hydrophilicity of HCS and increase abundant oxygen‐containing functional groups, facilitating the formation and uniform distribution of smaller PdAu nanoparticles. Moreover, the introduction of CeO 2 hybridizes with OHCS, which further modulates the electron structure of the catalyst, thus further promoting the activity of FAD. This work provides a feasible idea into fabricating efficient heterogeneous catalysts for FAD.