Controlled Encapsulation of Gold Nanoparticles into Zr-Metal-Organic Frameworks with Improved Detection Limitation of Volatile Organic Compounds via Surface-Enhanced Raman Scattering
Journal
Inorganic Chemistry
Journal Volume
62
Journal Issue
37
Date Issued
2023-01-01
Author(s)
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
Šutka, Andris
Kinka, Martynas
Chou, Lien Yang
Shieh, Fa Kuen
Abstract
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.
Type
journal article