General synthesis and gas-sensing properties of multiple-shell metal oxide hollow microspheres

Abstract

A sphere of many coats: A facile sequential templating process for the general preparation of metal oxide hollow microspheres with multiple shells (red), such as α‐Fe2O3, Co3O4, NiO, CuO, ZnO, and ZnFe2O4, may open up new opportunities for preparing advanced materials based on complex hollow structures with multipurpose applications.