Gas-Phase Deposition of Gold Nanoclusters to Produce Heterogeneous Glycerol Oxidation Catalysts
Gas-Phase Deposition of Gold Nanoclusters to Produce Heterogeneous Glycerol Oxidation Catalysts
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DOI：
10.1021/acsanm.0c01140
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发表时间：
2020-06-26
影响因子：
5.9
通讯作者：
Palmer, Richard E.
中科院分区：
文献类型：
--
作者：
Cai, Rongsheng;Malta, Grazia;Palmer, Richard E.
胶体法制备的金纳米粒子是碱性条件下甘油选择性氧化的有效催化剂。通过湿化学方法大规模合成催化剂会导致大量浪费，并可能导致聚合物或盐残留在催化剂上。相比之下，气相簇沉积（簇束沉积）提供了一种无溶剂的方法来合成受控的纳米颗粒/簇。我们表明，裸露的气相金簇沉积到碳粉导致催化剂的胶体方法制备的。这表明该合成方法生产具有减少的废物的氧化催化剂的可行性。
Gold nanoparticles prepared by colloidal methods are effective catalysts for selective glycerol oxidation under basic conditions. Large-scale synthesis of catalysts by wet chemical methods leads to large amounts of waste and can result in polymer or salt residues remaining on the catalyst. In contrast, gas-phase cluster deposition (cluster beam deposition) offers a solvent-free method to synthesize controlled nanoparticles/clusters. We show that the deposition of bare gas-phase gold clusters onto carbon powder leads to a catalyst comparable to that prepared by colloidal methods. This shows the feasibility of the synthesis method to produce oxidation catalysts with reduced waste.