| Title: | Facile hydrothermal synthesis of Ti(3)C(2)T(x)-TiO(2) nanocomposites for gaseous volatile organic compounds detection at room temperature |
| Author(s): | Kuang D; Wang L; Guo X; She Y; Du B; Liang C; Qu W; Sun X; Wu Z; Hu W; He Y; |
| Address: | "Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; State Key Laboratory of Coal Mine Disaster Dynamic and Control, Chongqing University, Chongqing 400044, China. Division of General Internal Medicine, Chongqing Cancer Hospital, Chongqing University, Chongqing 400030, China. Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China. Key Laboratory of Fundamental Science Micro/Nano Device System Technology, Micro System Research Center of Chongqing University, Chongqing University, Chongqing 400044, China. Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; State Key Laboratory of Coal Mine Disaster Dynamic and Control, Chongqing University, Chongqing 400044, China. Electronic address: yonghe@cqu.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2021.126171 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "The gaseous volatile organic compounds (VOCs) sensors with high-selectivity and low-power consumption have been expected for practical applications in environmental monitoring and disease diagnosis. Herein, we demonstrate a room-temperature VOCs gas sensor with enhanced performance based on Ti(3)C(2)T(x)-TiO(2) nanocomposites. The Ti(3)C(2)T(x)-TiO(2) nanocomposites with regular morphology are successfully synthesized via a facile one-step hydrothermal synthesis strategy by using Ti(3)C(2)T(x) itself as titanium source. Attributed to the formation of interfacial heterojunctions and the modulation of carrier density, the Ti(3)C(2)T(x)-TiO(2) sensor exhibits about 1.5-12.6 times enhanced responses for the detection of various VOCs at room temperature than pure MXene sensor. Moreover, the nanocomposite sensor has better response to hexanal, both an air pollutant and a typical lung cancer biomarker. The gas response of the Ti(3)C(2)T(x)-TiO(2) sensor towards 10 ppm hexanal is about 3.4%. The hexanal gas sensing results display that the nanocomposite sensor maintains a high signal-to-noise ratio and the lower detection limit to hexanal gas is as low as 217 ppb. Due to the low power consumption and easy fabrication process, the Ti(3)C(2)T(x)-TiO(2) nanocomposite sensor is promising for application in IoT environmental monitoring as well as real-time health monitoring" |
| Keywords: | Gases *Nanocomposites Temperature Titanium *Volatile Organic Compounds Gas sensor MXenes Nanocomposites Titanium carbide Volatile organic compounds; |
| Notes: | "MedlineKuang, Delin Wang, Ling Guo, Xuezheng She, Yin Du, Bingsheng Liang, Chengyao Qu, Weijie Sun, Xia Wu, Zhilin Hu, Wei He, Yong eng Research Support, Non-U.S. Gov't Netherlands 2021/09/09 J Hazard Mater. 2021 Aug 15; 416:126171. doi: 10.1016/j.jhazmat.2021.126171. Epub 2021 May 21" |
