AI Article Synopsis
- - This study focuses on creating a film from cellulose nanocrystals and β-cyclodextrin to quickly and clearly detect methanol, which is a serious health threat.
- - The resulting iridescent film shows distinct colors for methanol (red) and ethanol (yellow-green), allowing for easy identification with the naked eye.
- - The film has been proven to be quick, reversible, and precise in detecting methanol, making it a practical tool for identifying methanol in various industrial applications.
Article Abstract
Due to the serious threat of methanol to human health, the convenient, quick and specific detection of methanol is of great importance. Therefore, in this study, a biomass-derived chiral nematic composite film is fabricated by the co-evaporation of cellulose nanocrystals (CNC) and water-soluble polymer of β-cyclodextrin (PCD). The freestanding iridescent CNC-PCD film shows distinguishing structural colors of red and yellow green for methanol and ethanol respectively, realizing the identification of the two homologous alcohols by naked eyes. Besides, the quick, reversible and quantitative colorimetric sensing of the CNC-PCD film to methanol is verified. As its structural color and maximum reflection wavelength redshift to the greatest extent for methanol than other alcohols, the CNC-PCD film exhibits the specificity and selectivity for methanol detection in both single and mixed solvents. Such less-consumed and easy-to-handle CNC-PCD film may be useful as a colorimetric sensor to detect or discriminate methanol in some industrial products.
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| http://dx.doi.org/10.1016/j.carbpol.2022.119929 | DOI Listing |
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