“…It is worth noting that morphologies and sizes of SnO 2 can bring dramatic effects on their properties and applications. A variety of synthesis methods have been introduced, including thermal evaporation, hydrothermal growth, , solvothermal growth, pulsed laser deposition, template induced growth, and so on to synthesize versatile structures of SnO 2 , such as nanowires, , nanobelts, , and heterostructures. , However, there have been fewer reports in regard to core−shell structures of SnO 2 . − This special structure can enrich the SnO 2 properties. In this work, we synthesized novel core−shell microspheres of SnO 2 at a large scale using a simple hydrothermal method at 200 °C with the assistance of hexamethylenetetramine (HMT).…”