Optical Properties of ZnO Nanoparticles on the Porous Structure of Mordenites and ZSM-5

被引：8

作者：

Susarrey-Arce, A. ^{[1
]}

Petranovskii, V. ^{[1
]}

Hernandez-Espinosa, M. A. ^{[2
]}

Portillo, R. ^{[3
]}

de la Cruz, W. ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, BC, Mexico

[2] Univ Autonoma Puebla, Dept Invest Zeolitas & Posgrad Ciencias Ambiental, Inst Ciencias, Puebla 72570, Mexico

[3] Univ Autonoma Puebla, Fac Ciencias Quim, Puebla 72570, Mexico

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2011年 / 11卷 / 06期

关键词：

Mordenite; ZSM-5; Zeolites; ZnO; Nanoparticles; UV-Vis; Cathodoluminescence; BAND-GAP; QUANTUM DOTS;

D O I：

10.1166/jnn.2011.3426

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

ZnO nanoparticles ranging from 2 to 10 nm were grown on ZSM-5 and mordenite zeolite hosts with different SiO2/Al2O3 molar ratios (MR). Formation of ZnO nanoparticles in the samples was confirmed by TEM. XRD and nitrogen adsorption measurements revealed that the zeolite structure is not destroyed. Surface Zn concentration was calculated from XPS data. ZnO nanoparticles in the zeolite matrix were studied by UV-Vis, diffuse reflectance and cathodoluminescence (CL) spectroscopies. CL revealed three different emissions from ZnO nanoparticles, approximately 3.1, 2.8 and 2.5 eV. The ZnO band-edge emission was associated with blue defects-related and oxygen vacancies emissions. The generation of the point defects at the interface explains the presence of this blue band.

引用

页码：5574 / 5579

页数：6

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