Development of NH3 Gas Sensors at Room Temperature Based on Modified Carbon Nanotubes

被引：7

作者：

Truong, Duong, V ^{[1
,2
]}

Linh, Bui T. ^{[1
]}

Kien, Nguyen M. ^{[1
]}

Anh, Luu T. L. ^{[1
]}

Tu, Nguyen C. ^{[1
]}

Chien, Nguyen D. ^{[1
]}

Lam, Nguyen H. ^{[1
]}

机构：

[1] Hanoi Univ Sci & Technol, Sch Engn Phys, Hanoi, Vietnam

[2] Hanoi Univ Ind, Hanoi, Vietnam

来源：

MATERIALS TRANSACTIONS | 2020年 / 61卷 / 08期

关键词：

modified carbon nanotubes (CNTs); gas sensors; gas response; Hummers method; AMMONIA; SENSITIVITY; FILMS;

D O I：

10.2320/matertrans.MT-MN2019005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multiwalled carbon nanotubes (CNTs) were modified with the Hummers method and coated onto Pt electrodes patterned on SiO2/Si(001) surface to fabricate chemical sensors. The modified CNTs showed a different structure and increased number of defects compared with pristine CNTs, these properties facilitated the adsorption of NH3 gas molecules on the CNT surfaces. NH3 gas sensing results indicate that the sensor exhibited an enhanced response to gas at room temperature. The response of the modified CNT-based sensor was 10 times higher than that of pristine CNT-based sensors.

引用

收藏

页码：1540 / 1543

页数：4

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