Saddeler S, Hagemann U, Schulz S
Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen, Universitätsstrasse 5-7, S07 S03 C30, D-45117 Essen, Germany.
Interdisciplinary Center for Analytics on the Nanoscale (ICAN), NanoEnergieTechnikZentrum, Carl-Benz-Strasse 199, D-47057 Duisburg, Germany.
Inorg Chem. 2020 Jul 20;59(14):10013-10024. doi: 10.1021/acs.inorgchem.0c01180. Epub 2020 Jun 26.
CoO nanoparticles were size- and shape-selectively synthesized in a solvothermal approach by the thermal decomposition of either cobalt(II) acetylacetonate [Co(acac)] or cobalt(II) nitrate [Co(NO)] in different solvents followed by calcination under air. Spherical, cubic, octahedral, and platelike nanoparticles with narrow size distributions and sizes ranging from 8 to 90 nm were formed in high yield. The nanoparticles were characterized by X-ray diffraction, scanning and transmission electron microscopy, energy-dispersive X-ray analysis, and X-ray photoelectron spectroscopy. The distinctive influence of the size and shape of the nanoparticles on the electrocatalytic activity in the oxygen evolution reaction is also demonstrated.
通过在不同溶剂中热分解乙酰丙酮钴（II）[Co(acac)] 或硝酸钴（II）[Co(NO)]，采用溶剂热法尺寸和形状选择性地合成了CoO纳米颗粒，随后在空气中进行煅烧。以高产率形成了尺寸分布窄、尺寸范围为8至90nm的球形、立方体形、八面体形和平板状纳米颗粒。通过X射线衍射、扫描和透射电子显微镜、能量色散X射线分析和X射线光电子能谱对纳米颗粒进行了表征。还证明了纳米颗粒的尺寸和形状对析氧反应中的电催化活性有显著影响。
