Ohtani Masataka, Muraoka Tomoyuki, Okimoto Yuki, Kobiro Kazuya
School of Environmental Science and Engineering, ‡Laboratory for Structural Nanochemistry, and §Research Center for Material Science and Engineering, Kochi University of Technology , 185 Miyanokuchi, Tosayamada, Kami, Kochi 782-8502, Japan.
Inorg Chem. 2017 Oct 2;56(19):11546-11551. doi: 10.1021/acs.inorgchem.7b01192. Epub 2017 Sep 15.
The ability of a rapid-heating solvothermal process to synthesize porous nanocrystal assemblies composed of the multiple transition metals was demonstrated. The rapid heating facilitated the quick formation of nascent nanocrystals to generate homogeneous mixed transition-metal oxides. Systematic studies of the synthesis of mixed-metal oxides under various experimental conditions indicated that the present simple method is suitable to develop a wide variety of binary and ternary transition-metal systems such as Co/Mn, Ni/Mn, and Co/Mn/Fe mixed-metal oxides. The products obtained from the rapid heating process were hierarchically assembled porous nanospheres composed of sub-10 nm nanocrystals, which had an extraordinarily high surface area and nano/mesopores. Electrochemical tests revealed the high catalytic ability of the porous nanocrystal assemblies in water oxidation.
证明了快速加热溶剂热法合成由多种过渡金属组成的多孔纳米晶体组件的能力。快速加热促进了新生纳米晶体的快速形成，以生成均匀的混合过渡金属氧化物。在各种实验条件下对混合金属氧化物合成的系统研究表明，目前这种简单的方法适用于开发多种二元和三元过渡金属体系，如Co/Mn、Ni/Mn和Co/Mn/Fe混合金属氧化物。通过快速加热过程获得的产物是由亚10纳米纳米晶体组成的分级组装多孔纳米球，其具有极高的表面积和纳米/中孔。电化学测试揭示了多孔纳米晶体组件在水氧化方面具有高催化能力。
