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Green, Multi-Gram One-Step Synthesis of Core-Shell Nanocomposites in Water and Their Catalytic Application to Chemoselective Hydrogenations

机译:水中核壳纳米复合材料的绿色,多克一步合成及其在化学选择性加氢中的催化应用

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摘要

We devise a new and green route for the multi-gram synthesis of core-shell nanoparticles (NPs) in one step under organic-free and pH-neutral conditions. Simply mixing core and shell metal precursors in the presence of solid metal oxides in water allowed for the facile fabrication of small CeO2-covered Au and Ag nanoparticles dispersed on metal oxides in one step. The CeO2-covered Au nanoparticles acted as a highly efficient and reusable catalyst for a series of chemoselective hydrogenations, while retaining C=C bonds in diverse substrates. Consequently, higher environmental compatibility and more efficient energy savings were achieved across the entire process, including catalyst preparation, reaction, separation, and reuse.
机译:我们设计了一种新的绿色路线,可在无有机物和pH中性条件下一步合成核壳纳米颗粒(NP)。在水中存在固体金属氧化物的情况下,简单地将核和壳金属前体混合即可,从而一步即可轻松制造分散在金属氧化物上的,被CeO2覆盖的小的Au和Ag纳米颗粒。被CeO2覆盖的Au纳米颗粒在一系列化学选择性氢化中起着高效且可重复使用的催化剂的作用,同时在各种基质中保留了C = C键。因此,在包括催化剂制备,反应,分离和再利用在内的整个过程中,实现了更高的环境兼容性和更有效的节能。

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