基于含钛TiCT和TiCT MXene的低温化学电阻式氧传感器

Low Temperature Chemoresistive Oxygen Sensors Based on Titanium-Containing TiCT and TiCT MXenes.

作者信息

Simonenko Elizaveta P, Nagornov Ilya A, Mokrushin Artem S, Kashevsky Sergey V, Gorban Yulia M, Simonenko Tatiana L, Simonenko Nikolay P, Kuznetsov Nikolay T

机构信息

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky pr., 31, 119991 Moscow, Russia.

Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia.

出版信息

Materials (Basel). 2023 Jun 21;16(13):4506. doi: 10.3390/ma16134506.

DOI:10.3390/ma16134506

PMID:37444820

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10342606/

Abstract

The chemoresistive properties of multilayer titanium-containing TiCT and TiCT MXenes, synthesized by etching the corresponding MAX phases with NaF solution in hydrochloric acid, and the composites based on them, obtained by partial oxidation directly in a sensor cell in an air flow at 150 °C, were studied. Significant differences were observed for the initial MXenes, both in microstructure and in the composition of surface functional groups, as well as in gas sensitivity. For single TiCT and TiCT MXenes, significant responses to oxygen and ammonia were observed. For their partial oxidation at a moderate temperature of 150 °C, a high humidity sensitivity (T, RH = 55%) is observed for TiCT and a high and selective response to oxygen for TiCT at 125 °C (RH = 0%). Overall, these titanium-containing MXenes and composites based on them are considered promising as receptor materials for low temperature oxygen sensors.

摘要

研究了通过在盐酸中用NaF溶液蚀刻相应的MAX相合成的多层含钛TiCT和TiCT MXene的化学电阻特性，以及基于它们的复合材料，这些复合材料是通过在150°C的气流中直接在传感器池中进行部分氧化而获得的。观察到初始MXene在微观结构、表面官能团组成以及气敏性方面存在显著差异。对于单一的TiCT和TiCT MXene，观察到对氧气和氨有显著响应。对于它们在150°C的适度温度下进行部分氧化，TiCT在55%相对湿度下具有高湿度敏感性，而TiCT在125°C（相对湿度为0%）时对氧气具有高选择性响应。总体而言，这些含钛MXene及其基于它们的复合材料被认为有望作为低温氧气传感器的受体材料。