Xu Jing, Shen Liya, You Haining, Liu Yuanli
Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.
Materials (Basel). 2024 Dec 13;17(24):6087. doi: 10.3390/ma17246087.
The determination of formaldehyde is of paramount importance, as it is present in numerous locations throughout life. In this study, aminophenol-modified gold nanoparticles (ATP-AuNPs) with different relative positions of hydroxyl and amino groups were synthesized for the detection of formaldehyde. They were characterized by transmission electron microscopy (TEM), ultraviolet-visible (UV-Vis) spectroscopy and Fourier transform infrared (FTIR) spectroscopy tests. The results demonstrated that the position plays a crucial role in the composites, which exhibit good stability when the sulfhydryl group and amino group transition from the para position to the neighboring position. Furthermore, the para position was identified as the optimal configuration for formaldehyde detection. When it was used to detect formaldehyde in ultrapure and Li River water, the limit of detection (LOD) was calculated to be 1.03/1.15 mM, respectively. This work not only provides a novel ATP-AuNP sensor but also highlights its practical situations.
甲醛的测定至关重要，因为它在生活中的众多场所都有存在。在本研究中，合成了具有不同羟基和氨基相对位置的氨基酚修饰金纳米颗粒（ATP-AuNPs）用于检测甲醛。通过透射电子显微镜（TEM）、紫外可见（UV-Vis）光谱和傅里叶变换红外（FTIR）光谱测试对它们进行了表征。结果表明，位置在复合材料中起着关键作用，当巯基和氨基从对位转变为邻位时，复合材料表现出良好的稳定性。此外，对位被确定为检测甲醛的最佳构型。当用于检测超纯水和漓江水中的甲醛时，计算得出检测限（LOD）分别为1.03/1.15 mM。这项工作不仅提供了一种新型的ATP-AuNP传感器，还突出了其实际应用情况。
