【作者】：Peng Sun,* Chen Wang, Jiangyang Liu, Xin Zhou, Xiaowei Li, Xiaolong Hu, and Geyu Lu*
【题目】：Hierarchical Assembly of alpha-Fe2O3 Nanosheets on SnO2 Hollow Nanospheres with Enhanced Ethanol Sensing Properties
【关键词】：microwave hydrothermal method,semiconductor,hollow nanostructure, alpha-Fe2O3/SnO2 composites,gas sensor
【版面信息】：ACS APPLIED MATERIALS & INTERFACES 7 (2015) 19119-19125
摘要:
We present the preparation of a hierarchical nanoheterostructure consisting of inner SnO2hollow spheres (SHS) surrounded by an outer alpha-Fe2O3nanosheet (FNS). Deposition of the FNS on the SHS outer surface was achieved by a facile microwave hydrothermal reaction to generate a double-shell SHS@ENS nanostructure. Such a composite with novel heterostructure acted as a sensing material for gas sensors. Significantly, the hierarchical composites exhibit excellent sensing performance toward ethanol, which is superior to the single component (SHS), mainly because of the synergistic effect and heterojunction.
