Title :
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
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.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2321662
