N-Heterocyclic Carbene-Modified Au-Pd Alloy Nanoparticles and Their Application as Biomimetic and Heterogeneous Catalysts.
N-Heterocyclic Carbene-Modified Au-Pd Alloy Nanoparticles and Their Application as Biomimetic and Heterogeneous Catalysts.
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DOI：
10.1002/chem.201803274
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发表时间：
2018-11
期刊：
影响因子：
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通讯作者：
Patricia Tegeder;M. Freitag;Kathryn M. Chepiga;Satoshi Muratsugu;Nadja Möller;Sebastian Lamping;Mizuki Tada;F. Glorius;B. Ravoo
中科院分区：
文献类型：
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作者：
Patricia Tegeder;M. Freitag;Kathryn M. Chepiga;Satoshi Muratsugu;Nadja Möller;Sebastian Lamping;Mizuki Tada;F. Glorius;B. Ravoo
采用简单的配体交换工艺制备了水溶性n -杂环碳稳定金-钯合金纳米颗粒。广泛的分析显示优异的尺寸保持和稳定性多年在水中。该合金纳米颗粒被用作d-葡萄糖有氧氧化的仿生催化剂，而单金属金和钯纳米颗粒对d-葡萄糖的有氧氧化没有或可以忽略不计。该合金纳米颗粒进一步作为钛负载的非均相催化剂用于硝基芳烃的轻度加氢和1,2-二苯基乙炔的半加氢，并在E-和z -二苯乙烯之间具有溶剂依赖的选择性切换。
The preparation of water-soluble, N-heterocyclic-carbene-stabilized Au-Pd alloy nanoparticles by a straightforward ligand exchange process is presented. Extensive analysis revealed excellent size retention and stability over years in water. The alloy nanoparticles were applied as biomimetic catalysts for aerobic oxidation of d-glucose, for which monometallic Au and Pd nanoparticles showed no or negligible activity. The alloy nanoparticles were further applied as titania-supported heterogeneous catalysts for the mild hydrogenation of nitroarenes and the semihydrogenation of 1,2-diphenylacetylene with a solvent-dependent selectivity switch between E- and Z-stilbene.