Enhancement of NH3 Gas Sensitivity at Room Temperature by Carbon Nanotube-Based Sensor Coated with Co NanoparticlesReportar como inadecuado




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1

School of Engineering Physics, Hanoi University of Science and Technology, 1 Dai Co Viet Rd, Hanoi 10000, Vietnam

2

Advanced Institute of Science and Technology, Hanoi University of Science and Technology, 1 Dai Co Viet Rd, Hanoi 10000, Vietnam





*

Author to whom correspondence should be addressed.



Abstract Multi-walled carbon nanotube MWCNT film has been fabricated onto Pt-patterned alumina substrates using the chemical vapor deposition method for NH3 gas sensing applications. The MWCNT-based sensor is sensitive to NH3 gas at room temperature. Nanoclusters of Co catalysts have been sputtered on the surface of the MWCNT film to enhance gas sensitivity with respect to unfunctionalized CNT films. The gas sensitivity of Co-functionalized MWCNT-based gas sensors is thus significantly improved. The sensor exhibits good repeatability and high selectivity towards NH3, compared with alcohol and LPG. View Full-Text

Keywords: multi-walled carbon nanotube; CVD; sensor; NH3; catalyst multi-walled carbon nanotube; CVD; sensor; NH3; catalyst





Autor: Lich Quang Nguyen 1, Pho Quoc Phan 1, Huyen Ngoc Duong 1, Chien Duc Nguyen 1,2 and Lam Huu Nguyen 1,2,*

Fuente: http://mdpi.com/



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