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Article Abstract
The conversion of p-aminothiophenol (PATP) or p-nitrothiophenol (PNTP) to p,p'-dimercaptoazobenzene (DMAB) has been used as model reactions to study plasmon-catalyzed reaction on nanoparticles. Herein, we report the conversion of PNTP to DMAB which is triggered by SO ions on gold nanoparticles (AuNPs) for the first time. With the addition of SO, the Raman peaks at 1139, 1392, 1437 cm appears, which indicates the formation of DMAB. The experiment results suggested that the synergistic effect of AuNPs and SO promoted the conversion of PNTP to DMAB. Besides, the proposed catalysis system is high selectivity to SO ions, which provides a new detection route to SO ions in the future. More importantly, the possible reaction mechanism has been put forward which is helpful to understand the surface plasmon-assisted catalytic reduction of PNTP on the surface of SERS substrate.
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| http://dx.doi.org/10.1016/j.saa.2021.120282 | DOI Listing |
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