Controlled Synthesis of Self-Assembled Metal Oxide Hollow Spheres Via Tuning Redox Potentials: Versatile Nanostructured Cobalt Oxides


  • We acknowledge the support of the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences for support of this research. We also thank Dr. Wei-Na Li, Dr. Frank Galasso, Dr. Ray Joesten, Dr. Xiongfei Shen and Mr. Craig Calvert for helpful suggestions. Supporting Information is available online from Wiley InterScience or from the author.


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A general method to produce self-assembled metal oxides with hollow structures is developed by controlling the net redox potentials. Nanostructured CoOOH and CeO2 hollow microspheres have been successfully prepared by this method. The synthesized CoOOH hollow spheres are versatile precursors for nanomaterials of cobalt oxide derivatives (eg. Co3O4, LiCoO2), and also possess excellent catalytic activity.