Synthesis of Macroporous Calcium Carbonate/Magnetite Nanocomposites and their Application in Photocatalytic Water Splitting

Fabrication of a new macroporous calcium carbonate nanocomposite is demo­nstrated using calcium carbonate hexahydrate. Magnetite nanoparticles are incorporated into the highly hydrated carbonate precursor and microwaving is used to convert the crystals into polycrystalline, vaterite blocks with open nano­architectures and retention of the original dimensions. Co-catalyst activity of the composite material is demonstrated for photocatalytic water oxidations. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.