Email this article DEVELOPMENT NH3 GAS SENSORS AT ROOM TEMPERATURE BASED ON CNT/WO3 NANOBRICK COMPOSITE
About this article
Received: 26/08/19 Revised: 25/10/19 Published: 07/11/19Authors
1. Duong Vu Truong
, Hanoi University of Industry, Hanoi, Vietnam2. Nguyen Cong Tu, School of Engineering Physics, Hanoi University of Science and Technology, Hanoi, Vietnam
3. Luong Huu Bac, School of Engineering Physics, Hanoi University of Science and Technology, Hanoi, Vietnam
4. Nguyen Duc Chien, School of Engineering Physics, Hanoi University of Science and Technology, Hanoi, Vietnam
5. Nguyen Huu Lam, School of Engineering Physics, Hanoi University of Science and Technology, Hanoi, Vietnam
Abstract
Incorporation of carbon nanotubes (CNTs) with WO3 metal oxides nanoparticles would improve NH3 gas sensing properties. In this work, CNTs was incorporated into tungsten oxide (WO3) nanoparticles using simple ultrasonication method. The morphology of CNTs/ WO3 composites were observed with field-emission scanning electron microscopy (FE-SEM). The CNTs/ WO3 nanocomposite showed good sensing response towards NH3 at 60 ppm, and more remarkably at room temperature. The enhanced sensing properties might be attributed to the formation of heterojunction and synergistic effect between CNTs and WO3.
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