Truncated concave octahedral Cu2O nanocrystals with {hkk} high-index facets for enhanced activity and stability in heterogeneous catalytic azide–alkyne cycloaddition. Issue 4 (30th January 2018)

• Record Type: Journal Article
• Authors: Zhao, Zelun; Wang, Xue; Si, Jiaqi; Yue, Chengtao; Xia, Chungu; Li, Fuwei
• Is Part Of: Green chemistry. Volume 20:Issue 4(2018)
• Page Start: 832
• Page End: 837
• Publication Date: 2018-01-30
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/c7gc03020g
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Truncated concave octahedral Cu2 O nanocrystals with high-index { hkk } facets exhibited superior activity and stability toward azide–alkyne cycloaddition. Abstract : We report a facile synthesis of Cu2 O 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, Cu2 O 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 Cu2 O rhombic dodecahedra with {110} facets and cubes with {100} facets. After 10 rounds of recycling experiments, the Cu2 O truncated concave octahedra still exhibited good catalytic and structural stability.