二氧化锆-碳纳米管复合材料的合成及其作为乙醇化学发光传感材料的应用。

Synthesis of ZrO2-carbon nanotube composites and their application as chemiluminescent sensor material for ethanol.

作者信息

Sun Zhenyu, Zhang Xinrong, Na Na, Liu Zhimin, Han Buxing, An Guimin

机构信息

Beijing National Laboratory for Molecular Science, Laboratory of Colloids, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.

出版信息

J Phys Chem B. 2006 Jul 13;110(27):13410-4. doi: 10.1021/jp0616359.

DOI:10.1021/jp0616359

PMID:16821863

Abstract

ZrO2-carbon nanotube (CNT) composites have been successfully synthesized via decomposition of Zr(NO3)4.5H2O in supercritical carbon dioxide-ethanol solution with dispersed CNTs at relatively low temperatures. The samples were characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffraction spectroscopy (XRD), transmission electron microscopy (TEM), and energy-dispersive X-ray (EDX) analyses. It was demonstrated that CNTs were fully coated with an amorphous ZrO2 layer, and the coating layer was nominally complete and uniform. In addition, the thickness of the coating sheath could be readily controlled by tuning the Zr(NO3)4.5H2O/CNTs ratio used. Furthermore, the chemiluminescent sensor prepared from ZrO2-carbon nanotube composites exhibited dramatic sensitivity as well as high stability and selectivity to ethanol.

摘要

通过在相对低温下于超临界二氧化碳 - 乙醇溶液中分解Zr(NO3)4·5H2O，并加入分散的碳纳米管（CNT），成功合成了ZrO2 - 碳纳米管复合材料。通过X射线光电子能谱（XPS）、X射线衍射光谱（XRD）、透射电子显微镜（TEM）和能量色散X射线（EDX）分析对样品进行了表征。结果表明，碳纳米管完全被非晶态ZrO2层包覆，且包覆层基本完整且均匀。此外，通过调整所使用的Zr(NO3)4·5H2O/碳纳米管比例，可以很容易地控制包覆层的厚度。此外，由ZrO2 - 碳纳米管复合材料制备的化学发光传感器对乙醇表现出显著的灵敏度以及高稳定性和选择性。