RAPID AND COST EFFECTIVE SYNTHESIS OF ZnO NANORODS USING MICROWAVE IRRADIATION TECHNIQUE

被引：51

作者：

Ahmed, Faheem ^{[1
]}

Kumar, Shalendra ^{[1
]}

Arshi, Nishat ^{[1
]}

Anwar, M. S. ^{[1
]}

Koo, Bon Heun ^{[1
]}

Lee, Chan Gyu ^{[1
]}

机构：

[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, Gyeongnam, South Korea

来源：

FUNCTIONAL MATERIALS LETTERS | 2011年 / 4卷 / 01期

关键词：

ZnO; PL; XRD; microwave synthesis; HRTEM; PHOTOLUMINESCENCE; NANOWIRES; GROWTH; VAPOR;

D O I：

10.1142/S1793604711001531

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ZnO nanorods assembled in flower shaped morphology have been successfully synthesized using low power microwave irradiation in a very short duration. The diameter and length of the rods were within 150-190 nm (tip diameter similar to 15 nm) and 2 mu m, respectively, with an aspect ratio of 20-22. The synthesized nanorods were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), Fourier transform infrared microscopy (FT-IR), photoluminescence (PL) and magnetization measurements. The XRD and FT-IR results indicate that ZnO nanorods have the pure wurtzite structure with lattice parameters a and c of 3.254 and 5.197 angstrom, respectively. The selected area electron diffraction (SAED) pattern reveals that the ZnO nanorods are single crystal in nature and grow along [ 001] plane. Room-temperature PL spectrum of the as-grown ZnO nanorods shows a near-band-edge (NBE) emission peak and defect induced emissions. Magnetization measurements indicate that ZnO nanorods exhibit room temperature ferromagnetism with remanent magnetization (Mr) and coercivity (H-c) about 2.92 x 10(-4) (emu/g) and 29.75 Oe, respectively, which may be due to the presence of defects in the ZnO nanorods.

引用

页码：1 / 5

页数：5

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