Truncated concave octahedral Cu2O nanocrystals with {hkk} high-index facets for enhanced activity and stability in heterogeneous catalytic azide–alkyne cycloaddition
Truncated concave octahedral Cu2O nanocrystals with {hkk} high-index facets for enhanced activity and stability in heterogeneous catalytic azide–alkyne cycloaddition
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DOI：
10.1039/c7gc03020g
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发表时间：
2018-02
期刊：
影响因子：
9.8
通讯作者：
Zhao Zelun;Xue Wang;Si Jiaqi;Chengtao Yue;C. Xia;Fuwei Li
中科院分区：
文献类型：
--
作者：
Zhao Zelun;Xue Wang;Si Jiaqi;Chengtao Yue;C. Xia;Fuwei Li
我们报道了一种以{511}高指数切面为主的Cu2O截断凹八面体纳米晶体在水包油乳液体系中的简单合成。在以水为绿色溶剂的叠氮-烷烃环加成过程中，Cu2O截断凹八面体的活性显著增强，TOF高达2413 h−1，分别是{110}面Cu2O菱形十二面体和{100}面Cu2O立方体十二面体的2倍和4倍。经过10轮循环实验，Cu2O截断凹八面体仍表现出良好的催化稳定性和结构稳定性。
We report a facile synthesis of Cu2O truncated concave octahedral nanocrystals mainly with {511} high-index facets in a system of oil in water emulsion. In azide–alkyne cycloaddition with water as a green solvent, Cu2O truncated concave octahedra showed greatly enhanced activity with a turnover frequency (TOF) as high as 2413 h−1, which was about two and four times, respectively, that of Cu2O rhombic dodecahedra with {110} facets and cubes with {100} facets. After 10 rounds of recycling experiments, the Cu2O truncated concave octahedra still exhibited good catalytic and structural stability.