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基于碳纳米管的传感器表面涂覆 Co 纳米粒子可提高室温下对 NH3 气体的灵敏度。

Enhancement of NH3 gas sensitivity at room temperature by carbon nanotube-based sensor coated with Co nanoparticles.

机构信息

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

出版信息

Sensors (Basel). 2013 Jan 30;13(2):1754-62. doi: 10.3390/s130201754.

DOI:10.3390/s130201754
PMID:23364198
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3649409/
Abstract

Multi-walled carbon nanotube (MWCNT) film has been fabricated onto Pt-patterned alumina substrates using the chemical vapor deposition method for NH(3) gas sensing applications. The MWCNT-based sensor is sensitive to NH(3) 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 NH(3), compared with alcohol and LPG.

摘要

多壁碳纳米管 (MWCNT) 薄膜已采用化学气相沉积法在 Pt 图案化氧化铝衬底上制备，用于 NH(3) 气体传感应用。基于 MWCNT 的传感器对室温下的 NH(3) 气体敏感。已经在 MWCNT 薄膜的表面溅射 Co 纳米团簇催化剂，以提高相对于未功能化 CNT 薄膜的气体灵敏度。因此，功能化 Co 的 MWCNT 基气体传感器的气体灵敏度得到了显著提高。与酒精和液化石油气相比，该传感器对 NH(3) 具有良好的重复性和高选择性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/08eb78b9e04f/sensors-13-01754f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/08335ae8f96e/sensors-13-01754f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/1f6502b3caf0/sensors-13-01754f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/e41d08c3de94/sensors-13-01754f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/08eb78b9e04f/sensors-13-01754f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/08335ae8f96e/sensors-13-01754f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/1f6502b3caf0/sensors-13-01754f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/e41d08c3de94/sensors-13-01754f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0db6/3649409/08eb78b9e04f/sensors-13-01754f4.jpg

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