AI Article Synopsis
- TiCT MXene, an organ-like structure, was synthesized from TiAlC using hydrofluoric acid etching, followed by treatment with sodium hydroxide to enhance its properties.
- Room-temperature gas and humidity sensors were created using TiCT and alkalized TiCT through a dip coating method, making use of the improved material.
- The alkalized TiCT sensor showed significant enhancements in humidity sensing (60 times response change) and notable performance in detecting ammonia, suggesting its potential for use in chemical sensors.
Article Abstract
TiCT MXene with an organ-like structure was synthesized from TiAlC (MAX phase) through the typical hydrofluoric (HF) acid etching method. TiCT MXene was further alkaline-treated with a sodium hydroxide solution to obtain alkalized TiCT . Room-temperature planar-type gas- and humidity-sensing devices were also fabricated by utilizing TiCT MXene and alkalized TiCT sensing material based on the dip coating method, respectively. The intercalation of the alkali metal ion (Na) and the increase of the surface terminal oxygen-fluorine ratio ([O]/[F]) in TiCT can effectively improve humidity- and gas-sensing properties at room temperature. The developed alkalized TiCT sensor exhibited excellent humidity-sensing characteristics (approximately 60 times response signal change) in the relative humidity (RH) with a range of 11-95% and considerable NH sensing performance (28.87% response value to 100 ppm of NH) at room temperature. The improvement of NH and humidity-sensing properties indicated that alkalized TiCT has great potential in chemical sensors, especially in NH and humidity sensors.
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| http://dx.doi.org/10.1021/acssensors.9b00127 | DOI Listing |
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