Facile Synthesis of Platinum-Cerium(IV) Oxide Hybrids Arched on Reduced Graphene Oxide Catalyst in Reverse Micelles with High Activity and Durability for Hydrolysis of Ammonia Borane.
Highly dispersed Pt-CeO2hybrids arched on reduced graphene oxide (Pt-CeO2/rGO) were facilely synthesized by a combination of the reverse micelle technique and a redox reaction without any additional reductant or surfactant. Under a N2atmosphere, the redox reaction between Ce3+and Pt2+occurs automatically in alkaline solution, which results in the formation of Pt-CeO2/rGO nanocomposites (NCs). The as-synthesized Pt-CeO2/rGO NCs exhibit superior catalytic performance relative to that shown by the free Pt nanoparticles, Pt/rGO, Pt-CeO2hybrid, and the physical mixture of Pt-CeO2and rGO; furthermore, the nanocomposites show significantly better activity than the commercial Pt/C catalyst toward the hydrolysis of ammonia borane (NH3BH3) at room temperature. Moreover, the Pt-CeO2/rGO NCs have remarkable stability, and 92 % of their initial catalytic activity is preserved even after 10 runs. The excellent activity of the Pt-CeO2/rGO NCs can be attributed not only to the synergistic structure but also to the electronic effects of the Pt-CeO2/rGO NCs among Pt, CeO2, and rGO.
Jiangxi Inorganic Membrane Materials Engineering Research Centre, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China.
Qilu
Q
Yao
Jiangxi Inorganic Membrane Materials Engineering Research Centre, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China.
Yao
Y
Shi
Jiangxi Inorganic Membrane Materials Engineering Research Centre, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China.
Xiaoliang
X
Zhang
Jiangxi Inorganic Membrane Materials Engineering Research Centre, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China.
Xiangshu
X
Chen
Jiangxi Inorganic Membrane Materials Engineering Research Centre, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China.
Zhang-Hui
http://orcid.org/0000-0001-6342-0879
ZH
Lu
ammonia borane; heterogeneous catalysis; hydrogen; nanoparticles; platinum