Hydrothermal synthesis of β-Co(OH)2 nanoplatelets: A novel catalyst for CO oxidation

β-Co(OH)2 nanoplatelets synthesized by a facile, cost-effective, template-free chemical method exhibit a activity in CO oxidation probably related to the facile redox nature of the cycle transition of Co3+/Co2+, the absorbed Ox− ions and surface OH group of β-Co(OH)2 nanoplatelets.