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
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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在反胶束中还原氧化石墨烯催化剂上轻松合成铂-铈（IV）氧化物杂化物，对氨硼烷水解具有高活性和耐久性
DOI：
10.1002/asia.201601147
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发表时间：
2016
影响因子：
4.1
通讯作者：
Lu Zhang-Hui
中科院分区：
文献类型：
--
作者：
Yao Qilu;Shi Yao;Zhang Xiaoliang;Chen Xiangshu;Lu Zhang-Hui
采用反胶束技术和氧化还原反应相结合的方法，在不添加任何还原剂或表面活性剂的情况下，制备了高度分散的Pt-CeO 2/rGO杂化材料。在N2气氛下，Ce 3+和Pt 2+之间的氧化还原反应在碱性溶液中自动发生，这导致Pt-CeO 2/rGO纳米复合材料（NC）的形成。合成的Pt-CeO 2/rGO纳米碳管表现出上级的催化性能，相对于自由Pt纳米颗粒，Pt/rGO，Pt-CeO 2杂化物，以及Pt-CeO 2和rGO的物理混合物;此外，纳米复合材料显示出比商业Pt/C催化剂更好的活性，在室温下对氨硼烷（NH3 BH 3）的水解。此外，Pt-CeO 2/rGO NC具有显著的稳定性，即使在10次运行后仍保持92%的初始催化活性。 Pt-CeO 2/rGO纳米碳的优异活性不仅归因于协同结构，还归因于Pt、CeO 2和rGO之间的Pt-CeO 2/rGO纳米碳的电子效应。
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.