Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 121, Issue 9, Pages 5225-5231Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.6b12589
Keywords
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Funding
- National Natural Science Foundation of China [11374353, 11374045, 91436102, 11504224, 11474141]
- National Basic Research Program of China [2016YFA02008000]
- program for New Century Excellent Talents in University [NCET-12-0077]
- program of Liaoning Key Laboratory of Semiconductor Light Emitting and Photo catalytic Materials
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Plasmon-driven diazo coupling reaction of p-nitroaniline (PNA), containing both an amine group (-NH2) and a nitro group (-NO2), in ambient atmosphere environments remains unknown in experiments, on both metal nanoparticles and graphene-mediated metal nanostructures. Using the surface-enhanced Raman scattering (SERS) technique, we presented the surface coupling reactions of PNA under atmospheric environment, adsorbed on the Ag nanoparticle (AgNP) arrays, graphene-coated Ag nanoparticle (G/AgNPs) hybrids, and graphene-covered Ag nanowire (G/ AgNW) composites, respectively. It was found that PNAs were converted into 4,4'-diaminoazobenzene (DAAB) through a selective reduction reaction, rather than oxidized into 4,4'dinitroazobenzene (DNAB). These results may be useful for understanding the reaction mechanism for plasmon-driven chemical reactions of the molecules containing.both amine groups and nitro groups under ambient conditions.
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