Controlled Encapsulation of Gold Nanoparticles into Zr-Metal-Organic Frameworks with Improved Detection Limitation of Volatile Organic Compounds via Surface-Enhanced Raman Scattering.
Phuc Khanh LamJian-Jie LiaoMiao-Chun LinYu-Hsiu LiTsu-Hao WangHsin-Kai HuangYu-An HsuHao-Ying Patterson HsiehPu-Yun KuanChing-Tien ChenGuo-Xiu HaoChia-Kuang TsungKevin C-W WuAndris SutkaMartynas KinkaLien-Yang ChouFa-Kuen ShiehPublished in: Inorganic chemistry (2023)
Volatile organic compounds (VOCs) have harmful effects on human health and the environment but detecting low levels of VOCs is challenging due to a lack of reliable biomarkers. However, incorporating gold nanoparticles (Au NPs) into metal-organic frameworks (MOFs) shows promise for VOC detection. In this study, we developed nanoscale Au@UiO-66 that exhibited surface-enhanced Raman scattering (SERS) activity even at very low levels of toluene vapors (down to 1.0 ppm) due to the thickness of the shell and strong π-π interactions between benzenyl-type linkers and toluene. The UiO-66 shell also increased the thermal stability of the Au NPs, preventing aggregation up to 550 °C. This development may be useful for sensitive detection of VOCs for environmental protection purposes.
Keyphrases
- metal organic framework
- sensitive detection
- gold nanoparticles
- loop mediated isothermal amplification
- human health
- risk assessment
- quantum dots
- reduced graphene oxide
- climate change
- label free
- atomic force microscopy
- optical coherence tomography
- computed tomography
- high resolution
- pet imaging
- oxide nanoparticles
- electron microscopy