Controlled Encapsulation of Gold Nanoparticles into Zr-Metal–Organic Frameworks with Improved Detection Limitation of Volatile Organic Compounds via Surface-Enhanced Raman Scattering

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...

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Published in:Inorganic chemistry 2023-09, Vol.62 (37), p.14896-14901
Main Authors: Lam, Phuc Khanh, Liao, Jian-Jie, Lin, Miao-Chun, Li, Yu-Hsiu, Wang, Tsu-Hao, Huang, Hsin-Kai, Hsu, Yu-An, Hsieh, Hao-Ying Patterson, Kuan, Pu-Yun, Chen, Ching-Tien, Hao, Guo-Xiu, Tsung, Chia-Kuang, Wu, Kevin C.-W., Šutka, Andris, Kinka, Martynas, Chou, Lien-Yang, Shieh, Fa-Kuen
Format: Article
Language:English
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Summary: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.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.3c01600