Highly reliable and selective ethanol sensor based on α-Fe2O3 nanorhombs working in realistic environments
Yan Wenjun1, †, Zeng Xiaomin2, †, Liu Huan1, Guo Chunwei1, Ling Min2, Zhou Houpan1, §
       

(a) X-ray photoelectron spectroscopy (XPS) survey spectrum, (b) Fe 2p and (c) O 1s high-resolution spectra of the α-Fe2O3 nanorhombs.