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ACS Sens

Title:		Single-Atom Pt-Functionalized Ti(3)C(2)T(x) Field-Effect Transistor for Volatile Organic Compound Gas Detection
Author(s):		Zong B; Xu Q; Mao S;
Address:		"College of Environmental Science and Engineering, Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, China"
Journal Title:		ACS Sens
Year:		2022
Volume:		20220712
Issue:		7
Page Number:		1874 - 1882
DOI:		10.1021/acssensors.2c00475
ISSN/ISBN:		2379-3694 (Electronic) 2379-3694 (Linking)
Abstract:		"MXenes have shown exceptional electrochemical properties and demonstrate great promise in chemiresistive gas analysis applications. However, their sensing applications still face low sensitivity and specificity, slow response, and poor stability among the many challenges. Herein, a novel synthetic approach is reported to produce single-atom Pt (Pt SA)-implanted Ti(3)C(2)T(x) MXene nanosheets as the sensing channel in field-effect transistor (FET) gas sensors. This is a pioneer study of single-atom catalysts loaded on MXene nanosheets for gas detection, which demonstrates that Pt SA can greatly enhance the sensing performance of pristine Ti(3)C(2)T(x). The Pt SA-Ti(3)C(2)T(x) sensor exhibits high sensitivity and specificity toward ppb level (a low detection limit of 14 ppb) triethylamine (TEA) with good multicycle sensing performance. Moreover, the mechanism study and density functional theory (DFT) simulation show that the chemical sensitization effect and TEA adsorption enhancement from highly catalytic and uniformly distributed Pt SA lead to the enhanced sensing performances. This work presents a new prospect of single-atom catalysts for gas analysis applications, which will promote the development of cutting-edge sensing techniques for gas detection for public health and environment"
Keywords:		Adsorption Catalysis Titanium *Volatile Organic Compounds Ti3C2Tx MXene VOC gas detection field-effect transistor single-atom Pt triethylamine;
Notes:		"MedlineZong, Boyang Xu, Qikun Mao, Shun eng Research Support, Non-U.S. Gov't 2022/07/13 ACS Sens. 2022 Jul 22; 7(7):1874-1882. doi: 10.1021/acssensors.2c00475. Epub 2022 Jul 12"