Highly sensitive and selective detection of melamine in dairy products by turn-on fluorescence of ultrathin graphitic carbon nitride nanosheets,Luminescence

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Highly sensitive and selective detection of melamine in dairy products by turn-on fluorescence of ultrathin graphitic carbon nitride nanosheets
Luminescence ( IF 3.2 ) Pub Date : 2021-05-24 , DOI: 10.1002/bio.4094
Zixuan Liu ₁ , Zijun Zhang ₁ , Yuxin Li ₁

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There is an important and realistic need to develop a practical sensor for melamine in dairy products that is highly sensitive and selective. However, the complicated composition and environment in milk necessitate the use of a stable luminophore as the sensor, as well as excellent photophysical properties. Here, ultrathin graphitic carbon nitride nanosheet (CNNS) was prepared by successive thermal polymerization and acid exfoliation. The photophysical properties of CNNS include its strong ultraviolet absorption and intense blue-light emission. Notably, CNNS could act as a chemo-sensor to detect trace melamine in dairy products. The high stability, eminent sensitivity, powerful selectivity, and competitiveness all substantiate the findings that this CNNS luminophore is a promising sensor for melamine in dairy products, and has potential practical value for monitoring milk quality.

中文翻译：

通过超薄石墨氮化碳纳米片的开启荧光高灵敏度和选择性检测乳制品中的三聚氰胺

开发一种高灵敏度和选择性的乳制品中三聚氰胺的实用传感器是一个重要且现实的需求。然而，牛奶中复杂的成分和环境需要使用稳定的发光体作为传感器，以及优异的光物理特性。在这里，超薄石墨氮化碳纳米片（CNNS）是通过连续热聚合和酸剥离制备的。CNNS 的光物理特性包括其强烈的紫外线吸收和强烈的蓝光发射。值得注意的是，CNNS 可以作为一种化学传感器来检测乳制品中的微量三聚氰胺。高稳定性、卓越的灵敏度、强大的选择性和竞争力都证实了这一发现，即这种 CNNS 发光体是一种很有前途的乳制品中三聚氰胺传感器，

更新日期：2021-05-24

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