Photocatalytic activity of silver oxide capped Ag nanoparticles constructed by air plasma irradiation
| Autor: | Rong Yan, Mengtao Sun, Junling Chen, Yingcui Fang, Huanhuan Li, Qingmeng Wu, Bing Zhang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Plasma irradiation
Materials science Physics and Astronomy (miscellaneous) Absorption spectroscopy Ag nanoparticles 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Silver nanoparticle 0104 chemical sciences chemistry.chemical_compound chemistry Photocatalysis Surface plasmon resonance 0210 nano-technology Silver oxide Visible spectrum |
| Zdroj: | Applied Physics Letters. 112:163101 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.5024770 |
| Popis: | We construct a kind of structure of silver oxide capped silver nanoparticles (AgNPs) by cost-efficient air plasma irradiation, and study its visible-light driven photocatalytic activity (PA). By controlling the oxidization time, the relationship between the intensity of the localized surface plasmon resonance (LSPR) and the PA is well established. The PA reaches the maximum when the LSPR of AgNPs is nearly completely damped (according to absorption spectra); however, under this condition, the LSPR still works, confirmed with the high efficient selective transformation of p-Aminothiophenol (PATP) to p, p′-dimercaptoazobenzene (DMAB) under visible light. The mechanism of the LSPR damping induced PA improvement is discussed. We not only provide a cost-efficient approach to construct a LSPR strong damping structure but also promote the understanding of LSPR strong damping and its relationship with photocatalysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|