Room Temperature Gas Sensing of Two-Dimensional Titanium Carbide (MXene)

被引：703

作者：

Lee, Eunji ^{[1
]}

Mohammadi, Armin Vahid. ^{[1
]}

Prorok, Barton C. ^{[1
]}

Yoon, Young Soo ^{[2
]}

Beidaghi, Majid ^{[1
]}

Kim, Dong-Joo ^{[1
]}

机构：

[1] Auburn Univ, Mat Res & Educ Ctr, Auburn, AL 36849 USA

[2] Gachon Univ, Dept Chem & Biol Engn, Seongnam 13120, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 42期

关键词：

wearable gas sensor; room temperature sensor; MXene; Ti3C2Tx; 2D materials; TRANSITION-METAL CARBIDES; GRAPHENE OXIDE; BREATH ANALYSIS; ENERGY-STORAGE; NH3; SENSOR; SURFACE; TI3C2; ACETONE; NANOPARTICLES; DELAMINATION;

D O I：

10.1021/acsami.7b11055

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Wearable gas sensors have received lots of attention for diagnostic and monitoring applications, and two-dimensional (21)) materials can provide a promising platform for fabricating gas sensors that can operate at room temperature. In the present study, the room temperature gas-sensing performance of Ti3C2Tx nanosheets was investigated. 2D Ti3C2Tx (MXene) sheets were synthesized by removal of Al atoms from Ti3C2Tx (MAX phases) and were integrated on flexible polyimide platforms with a simple solution casting method. The Ti3C2Tx sensors successfully measured ethanol, methanol, acetone, and ammonia gas at room temperature and showed a p-type sensing behavior. The fabricated sensors showed their highest and lowest response toward ammonia and acetone gas, respectively. The limit of detection of acetone gas was theoretically calculated to be about 9.27 ppm, presenting better performance compared to other 2D material-based sensors. The sensing mechanism was proposed in terms of the interactions between the majority charge carriers of Ti3C2Tx and gas species.

引用

页码：37184 / 37190

页数：7

共 42 条

[11] Conductive two-dimensional titanium carbide 'clay' with high volumetric capacitance [J].