| CeO2with diverse morphologies-supported IrOx nanocatalysts for efficient oxygen evolution reaction—Commemorating the 100th anniversary of the birth of Academician Guangxian Xu |
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| 作者姓名： | Qingqing Li Zhichao Zeng Xiaolei Sun Feng Luo Yaping Du |
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| 作者单位： | Tianjin Key Lab for Rare Earth Materials and Applications;IMDEA Nanoscience |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(21522106.21971117);111 Project(B18030)from China;the Open Fund of the State Key Laboratory of Rare Earth Resource Utilization(RERU2019001);the Functional Research Fund for the Central Universities,Nankai University(ZB19500202);Beijing-Tianjin-Hebei Collaborative Innovation Project(63201058). |
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| 摘 要： | IrOx-based catalysts are considered the most promising candidates for oxygen evolution reaction(OER)due to their high efficiency.However,improving their intrinsic catalytic activity is essential for practical application.In this work,CeO2with three different morphologies(rod,cube,octahedron)and supported IrOx nanoparticles were fabricated,and they display morphology-dependent OER activity.The IrOx/CeO2-rod shows the highest activity;the catalysts have a catalytic activity sequence of rod>cube>octahedron.A plausible mechanism was proposed:the CeO2support with different morphologies modulates the electronic structure of IrOx by the synergistic interaction promoted by oxygen vacancies between the active component and the support,thereby altering the catalytic activity of the IrOx/CeO2catalyst.
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| 关 键 词： | IrOx/CeO2catalyst Oxygen evolution reaction Morphology effect Oxygen vacancy Rare earths |
| 收稿时间： | 1 September 2020 |
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