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 |
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Authors: | Qilu Yao Yao Shi Prof Xiaoliang Zhang Prof Xiangshu Chen Prof Zhang‐Hui Lu |
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Institution: | Jiangxi Inorganic Membrane Materials Engineering Research Centre, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China |
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Abstract: | Highly dispersed Pt‐CeO2 hybrids 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 N2 atmosphere, 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‐CeO2 hybrid, and the physical mixture of Pt‐CeO2 and 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. |
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Keywords: | ammonia borane heterogeneous catalysis hydrogen nanoparticles platinum |
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