Acetone vapor sensor made with cellulose-TiO2/MWCNTs hybrid nanocomposite

Yi Chen; Hyejun Jung; Jaehwan Kim

doi:10.1117/12.915756

30 March 2012 Acetone vapor sensor made with cellulose-TiO₂/MWCNTs hybrid nanocomposite

Yi Chen, Hyejun Jung, Jaehwan Kim

Proceedings Volume 8344, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2012; 83440B (2012) https://doi.org/10.1117/12.915756
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

A Titanium dioxide (TiO₂)/multi wall carbon nanotubes (MWCNTs) nanocomposite was synthesized by hydrothermal process. X-ray diffractometry, transmittance electron microscopy observation revealed this nanocompsite has high nanocrystral structure. After blending with regenerated cellulose, this hybrid nanocomposite was used as a room temperature ammonia (NH₃) gas sensor. The TiO₂/MWCNTs hybrid nanocomposite exhibited much higher response and faster response-recovery to NH3 gas of concentration ranging from 3000 ppm to 9000 ppm. The TiO₂/MWCNTs hybrid nanocomposite can be a flexible room temperature gas sensor. The gas sensing mechanism of this hybrid nanocomposite is also discussed in this paper.

Citation Download Citation

Yi Chen, Hyejun Jung, and Jaehwan Kim "Acetone vapor sensor made with cellulose-TiO₂/MWCNTs hybrid nanocomposite", Proc. SPIE 8344, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2012, 83440B (30 March 2012); https://doi.org/10.1117/12.915756

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