The preparation of CaO/CuO composites with high performance is essential for combined Ca–Cu looping process, where the exothermic reduction of CuO with methane is used in situ to calcine CaCO3.
A template-free approach for the formulation of hollow bacteria-like CaCO3-based pH-sensitive drug delivery systems (DDSs) with controllable anisotropy and click-release behavior is developed to make a step towards shape-mimicking DDSs.