Modified Impregnation Synthesis of Fe-loaded WO3 Nanosheets and the Gas-sensing Properties
Modified Impregnation Synthesis of Fe-loaded WO3 Nanosheets and the Gas-sensing Properties
复制标题
改性浸渍法合成载铁WO3纳米片及其气敏性能
DOI：
10.1246/cl.170555
复制
发表时间：
2017-09-01
影响因子：
1.6
通讯作者：
Wang, Tianci
中科院分区：
文献类型：
--
作者：
Zeng, Yan;Hua, Zhongqiu;Wang, Tianci
在本研究中，通过简单的酸化方法制备了片状WO3纳米片，并通过改进的浸渍程序用Fe催化修饰纳米片的表面。通过 X 射线衍射、SEM 和 TEM 对纳米片的结构和形貌进行了表征。结果表明，WO3纳米片高度不规则，厚度小至10-20 nm，并且发现Fe纳米颗粒分布在WO3表面。此外，还研究了WO3和负载Fe的WO3的传感特性。结果表明，Fe的表面催化修饰可以显着提高WO3纳米片的传感能力。特别是，Fe-WO3 纳米片对丙酮表现出优异的响应，甚至低至 1 ppm。
In the present study, flake WO3 nanosheets were prepared by a simple acidification method, and the surface of nanosheets was catalytically decorated with Fe via a modified impregnation procedure. The structure and morphology of the nanosheets were characterized by X-ray diffraction, SEM, and TEM. The results indicated that the WO3 nanosheets are highly irregular with a small thickness of 10-20 nm, and the Fe nanoparticles were found to be distributed on the surface of WO3. In addition, the sensing properties of WO3 and Fe-loaded WO3 were also investigated. It was revealed that the surface catalytic modification of Fe could significantly promote the sensing ability of WO3 nanosheets. In particular, Fe-WO3 nanosheets showed an excellent response to acetone, even down to 1 ppm.