【作者】：Wang Chen,Wang Tianshuang,Wang Boqun,Zhou Xin,Cheng Xiaoyang,Sun Peng*, Zheng Jie, Lu Geyu*
【题目】：Design of alpha-Fe2O3 nanorods functionalized tubular NiO nanostructure for discriminating toluene molecules
【关键词】：SENSING PROPERTIES, HYDROTHERMAL SYNTHESIS, GAS,PERFORMANCE,OXIDE,HETEROJUNCTION, ARCHITECTURES, SPHERES,SHELL
【版面信息】：SCIENTIFIC REPORTS 6 (2016)
摘要:
A novel tubular NiO nanostructure was synthesized by a facile and low-cost hydrothermal strategy and then further functionalized by decoratingα-Fe2O3nanorods. The images of electron microscopy indicated that theα-Fe2O3nanorods were assembled epitaxially on the surfaces of NiO nanotubes to formα-Fe2O3/NiO nanotubes. As a proof-of-concept demonstration of the function, gas sensing devices were fabricated from as-preparedα-Fe2O3/NiO nanotubes, and showed enhanced gas response and excellent selectivity toward toluene, giving a response of 8.8 to 5 ppm target gas, which was about 7.8 times higher than that of pure NiO nanotubes at 275℃. The improved gas sensing performance ofα-Fe2O3/NiO nanotubes could be attributed to the unique tubular morphology features, p-n heterojunctions and the synergetic behavior ofα-Fe2O3and NiO.
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