题目：

Facile Synthesis of Cr-Decorated Hexagonal Co₃O₄ Nanosheets for Ultrasensitive Ethanol Detection

作者：

Pingping Zhang, Jiwei Wang, Xiaoxin Lv, Hui Zhang and Xuhui Sun

单位：

Soochow University-Western University Centre for Synchrotron Radiation Research, Institute of Functional Nano & Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science & Technology, Soochow University, Suzhou, Jiangsu, 215123, People’s Republic of China

摘要：

Cr-decorated hexagonal Co₃O₄ nanosheets were synthesized by a facile hydrothermal method on a SiO₂/Si substrate, followed by a simple physical deposition of Cr film and a thermal annealing treatment. The Co₃O₄ nanosheets possess a porous and polycrystalline structure consisting of Co₃O₄ nanoparticles; Cr₂O₃ nanoparticles are uniformly formed on the surface of the Co₃O₄ nanosheets after the annealing treatment. The ethanol-sensing properties of the Cr-decorated hexagonal Co₃O₄ nanosheets were investigated in detail, and compared to pure hexagonal Co₃O₄ nanosheets, they show unique sensing properties toward ethanol, including high response (5.4) even when the ethanol concentration is as low as 10 ppm, ultrafast response (1s) and recovery (7s) rates, and good selectivity at a 300°C operating temperature. These properties make the Cr decorated hexagonal Co₃O₄ nanosheets good candidates for ethanol detection.

影响因子：

3.821

分区情况：

1区

链接：

http://iopscience.iop.org/0957-4484/26/27/275501