Affiliation:
1. Department of Chemistry and Center for Atomic Engineering of Advanced Materials School of Materials Science and Engineering Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials Anhui University Hefei 230601 China
2. Key Laboratory of Structure and Functional Regulation of Hybrid Materials Ministry of Education Anhui University Hefei 230601 China
3. School of Biomedical Engineering Research and Engineering Center of Biomedical Materials Anhui Medical University Hefei 230032 China
Abstract
AbstractAs heterogeneous catalysts, nanoclusters have been extensively investigated because of their exceptional catalytic performance. In this work, we propose an electrostatic attraction strategy to immobilize atomically precise positively charged [Au52Cu72(SR)55]+ (denoted as Au52Cu72(SR)55) nanoclusters supported onto negatively charged SBA‐15. As expected, the Au52Cu72(SR)55/SBA‐15 catalysts display outstanding activity for driving the benzyl azide‐phenylacetylene cycloaddition reaction (called as click reaction). In comparison to Au11/SBA‐15 and Cu13/SBA‐15 catalysts, the bimetallic Au52Cu72(SR)55/SBA‐15 catalysts exhibit the highest catalytic activity for click reaction. Moreover, to explore the effect of ligands on the catalytic performance of Au52Cu72(SR)55/SBA‐15 catalysts, Au52Cu72(SR)55/SBA‐15‐X (X is the heat treatment temperature, X=120, 250, 300) catalysts are obtained by calcining at different temperatures. Compared with Au52Cu72(SR)55/SBA‐15‐X (X=120, 250, 300), the uncalcined Au52Cu72(SR)55/SBA‐15 catalysts show the best recyclability for click reaction. The structural integrity of the Au52Cu72(SR)55 nanoclusters is a key factor contributing to their exceptional cyclic performance. This work will be valuable for designing an ideal ligand‐protected clusters‐based catalysts with superior performance for organic reactions.
Funder
Natural Science Foundation of Anhui Province
National Natural Science Foundation of China