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

被引：98
|
作者：
Lich Quang Nguyen [1 ]
Pho Quoc Phan [1 ]
Huyen Ngoc Duong [1 ]
Chien Duc Nguyen [1 ,2 ]
Lam Huu Nguyen [1 ,2 ]
机构：
[1] Hanoi Univ Sci & Technol, Sch Engn Phys, Hanoi 10000, Vietnam
[2] Hanoi Univ Sci & Technol, Adv Inst Sci & Technol, Hanoi 10000, Vietnam
来源：
SENSORS | 2013年 / 13卷 / 02期
关键词：
multi-walled carbon nanotube; CVD; sensor; NH3; catalyst; SENSING PROPERTIES; FABRICATION; AMMONIA;
D O I：
10.3390/s130201754
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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.
引用
收藏
页码：1754 / 1762
页数：9
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