Different Synthesis Protocols for Co<sub>3</sub>O<sub>4</sub>-CeO<sub>2</sub>Catalysts-Part 1: Influence on the Morphology on the Nanoscale
作者:Jingxia Yang、Liliana Lukashuk、Johanna Akbarzadeh、Michael Stöger-Pollach、Herwig Peterlik、Karin Föttinger、Günther Rupprechter、Ulrich Schubert
DOI:10.1002/chem.201403636
日期:2015.1.7
Co3O4‐modified CeO2 (Co/Ce 1:4) was prepared by a combination of sol–gel processing and solvothermal treatment. The distribution of Co was controlled by means of the synthesis protocol to yield three different morphologies, namely, Co3O4 nanoparticles located on the surface of CeO2 particles, coexistent Co3O4 and CeO2 nanoparticles, or Co oxide structures homogeneously distributed within CeO2. The
Co 3 O 4改性的CeO 2(Co / Ce 1:4)是通过溶胶-凝胶加工和溶剂热处理的组合制备的。通过合成方案控制Co的分布以产生三种不同的形态,即位于CeO 2颗粒表面上的Co 3 O 4纳米颗粒,共存的Co 3 O 4和CeO 2纳米颗粒或均匀分布的Co氧化物结构在CeO 2中。不同形态对Co 3 O 4 -CeO 2性能的影响关于微晶相,粒度,表面积和对CO氧化的催化活性进行了研究。具有精细分散在CeO 2颗粒表面的Co 3 O 4纳米颗粒的材料具有最高的催化活性。