Mercury ion-engineering Au plasmonics on MoS2 layers for absorption-shifted optical sensors.
Jun Jiang LuoLing Yun QinXiao Juan DuHong Qun LuoNian Bing LiBang Lin LiPublished in: Analytical methods : advancing methods and applications (2021)
Semiconducting MoS2 layers offer the electrons, reducing conjugated Au(I) to Au atoms, and sebsequently serve as desirable substrates for supporting the interfacial growths of gold nanostructures. Au-covering MoS2 heterostructures perform morphology-varied optical characteristics, and the surface engineering of MoS2 involved by Hg2+ ions results in the differential growths of nanostructures and morphological diversities. Naked-eye colorimetric responses to mercury ions, with a low limit of detection of 1.27 nM, are achieved based on the in situ grown heterostructures.
Keyphrases
- quantum dots
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- reduced graphene oxide
- loop mediated isothermal amplification
- room temperature
- gold nanoparticles
- visible light
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- photodynamic therapy
- ionic liquid
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- high speed
- fluorescent probe
- living cells
- highly efficient
- hydrogen peroxide
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- transition metal
- silver nanoparticles