Fig. 4From: Facile Synthesis of Wormhole-Like Mesoporous Tin Oxide via Evaporation-Induced Self-Assembly and the Enhanced Gas-Sensing PropertiesTEM images of a SnO2-350 °C, b SnO2-400 °C (inset is corresponding SAED pattern), and d SnO2-450 °C. c HRTEM image of SnO2-400 °CBack to article page