Effect of Eu3+ on the morphology, structural, optical, magnetic, and photocatalytic properties of ZnO nanoparticles

被引：37

作者：

Poornaprakash, B. ^{[1
]}

Chalapathi, U. ^{[1
]}

Sekhar, M. Chandra ^{[1
,4
]}

Rajendar, V. ^{[1
]}

Vattikuti, S. V. Prabhakar ^{[2
]}

Reddy, M. Siva Pratap ^{[3
]}

Suh, Youngsuk ^{[1
]}

Park, Si-Hyun ^{[1
]}

机构：

[1] Yeungnam Univ, Dept Elect Engn, Gyongsan 38541, South Korea

[2] Yeungnam Univ, Sch Mech Engn, Gyongsan 38541, South Korea

[3] Kyungook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea

[4] Madanapalle Inst Technol & Sci, Dept Phys, Madanapalle 517325, India

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2018年 / 123卷

关键词：

Zinc oxide; Nanoparticles; Optoelectronics; Spintronics; Photocatalysis; FERROMAGNETISM;

D O I：

10.1016/j.spmi.2018.07.010

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this study, we attempted to synthesize ZnO nanoparticles with various Eu3+ doping concentrations by a simple coprecipitation method for multifunctional applications. Morphology studies of the synthesized samples revealed the presence of hexagonal-shaped and monodispersed particles. A slight shift in the X-ray diffraction patterns of the Eu3+-doped ZnO samples confirmed the successful incorporation of the dopant ions into the host crystal. A change in the E-2 (high)-mode intensity was ample evidence of intrinsic defects associated with the oxygen atoms. Diffuse reflectance spectroscopy studies provided sufficient evidence of tuning of the bandgap of ZnO by Eu3+ doping, with a typical red shift. X-ray photoelectron spectroscopy studies revealed the presence of Eu with a +3 state in the ZnO lattice. All the doped ZnO nanoparticles exhibited typical room-temperature ferromagnetism (RTFM). The Eu3+-doped samples displayed a higher photocatalytic degradation (PCD) of RhB dye under UV light illumination compared with the undoped ZnO nanoparticles. Thus, Eu3+ doping is an effective approach for enhancing the RTFM and PCD properties of ZnO for spintronic and photocatalytic applications.

引用

页码：154 / 163

页数：10

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