Urayama Teppei, Mitsudome Takato, Maeno Zen, Mizugaki Tomoo, Jitsukawa Koichiro, Kaneda Kiyotomi
Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan), Fax: (+81) 6-6850-6260.
Research Center for Solar Energy Chemistry, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.
Chemistry. 2016 Dec 12;22(50):17962-17966. doi: 10.1002/chem.201604763. Epub 2016 Oct 27.
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 CeO -covered Au and Ag nanoparticles dispersed on metal oxides in one step. The CeO -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.
我们设计了一种全新的绿色路线，可在无有机溶剂和pH中性条件下，一步法多克量级合成核壳纳米颗粒（NPs）。只需在水中的固体金属氧化物存在下，将核和壳金属前驱体简单混合，就能一步法轻松制备出分散在金属氧化物上的小尺寸CeO包覆的Au和Ag纳米颗粒。CeO包覆的Au纳米颗粒可作为一系列化学选择性氢化反应的高效可重复使用催化剂，同时在多种底物中保留C = C键。因此，在包括催化剂制备、反应、分离和再利用的整个过程中，实现了更高的环境兼容性和更高效的节能效果。
