微纳米研究所所长郑直教授与张翼东老师在美国科学出版社(American Scientific Publishers)主办的Sensor Letters杂志发表论文，题为：Green Synthesis of Indium Oxide Hollow Spheres with Specific SensingActivities for Flammable Organic Vapors。  

研究所对此表示祝贺！  

Green Synthesis of Indium Oxide Hollow Spheres with Specific SensingActivities for Flammable Organic Vapors

Yidong Zhang, Gangcheng Jiang, Ka Wai Wong, and Zhi Zheng∗

Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan Province, 461000, P. R. China  

(Received: 27 October 2009.Accepted: 15 December 2009)  

In this paper, we reported the design and green synthesis of In2O3 hollow spheres that exhibited specific sensing response towards flammable organic vapors. The hollow spheres were synthesized in an “one-pot” by hydrothermal reaction of glucose and InCl3 mixtures at 180 C for 12 h, followed by calcination in air at 600 C for 1 h. The products were characterized by X-ray diffraction (XRD), scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and thermogravimetric differential thermal analysis (TG-DTA). The as-synthesized spheres had a large diameter of ∼600 nm thin shell of about 50 nm thick. They are composed of In2O3 nanocrystals. After calcination, a sensing platform based on these In2O3 hollow spheres was constructed, that exhibited excellent sensitivity to six flammable organic vapors including alcohol, acetone, 93# gasoline, formaldehyde, chloroform, and acetonitrile. The corresponding sensing mechanism was also discussed.  

Keywords: Indium Oxide, Glucose, Hollow Spheres, Gas-Sensor.