Effect of Catalyst Type on Optical Emission

Author

Teramoto, Yoshiyuki ; Hyun-Ha Kim ; Ogata, Atsushi ; Negishi, Nobuaki

Author_Institution

Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan

Volume

42

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

2850

Lastpage

2851

Abstract

The effect of catalyst types on optical emission was studied in N₂ discharge under atmospheric pressure. In silver nanoparticle-loaded MS-13X and HY, purple emissions were observed. On the other hand, green emission was observed in silver nanoparticle-loaded HY. This spectrum had a broadband around 540 ± 60 nm. It may be firescence from excited silver on catalyst surface. When toluene adsorbed onto Ag/HY, emission color changed from green to purple in adsorption area only. After catalyst regeneration by O₂ plasma treatment, the emission color returned to green. There, interesting phenomena were important to figure out the mechanism of plasma-catalyst hybrid technology.

Keywords

adsorption; catalysts; discharges (electric); fluorescence; molecular sieves; nanoparticles; nitrogen; plasma chemistry; plasma diagnostics; plasma materials processing; silver; Ag; N₂ discharge; O₂ plasma treatment; adsorption; catalyst type effect; flrescence; green emission; optical emission; plasma-catalyst hybrid technology; purple emissions; silver nanoparticle-loaded HY; silver nanoparticle-loaded MS-13X; Air pollution; Color; Discharges (electric); Plasmas; Silver; Surface discharges; Surface treatment; Emission; fluorescence; plasma-driven catalysis; silver nanoparticle; silver nanoparticle.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2014.2321662

Filename

6819041