Abstract
Hollow urchin-like SnO2 nanospheres with tetragonal rutile structure were synthesized by a template-free hydrothermal route. The as-prepared products demonstrated a novel hollow urchin-like SnO2 nanosphere with the diameter of around 500 nm. It exhibited a high response and selectivity toward ethylene glycol at a lower heating voltage. The excellent ethylene glycol response was attributed to the hollow structure, the nanorods building blocks and the unique architecture structure.
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