One-step, template-free hydrothermal synthesis of CuO tetrapods

被引：72
作者：
Siddiqui, Hafsa [1 ]
Qureshi, M. S. [1 ]
Hague, Fozia Z. [1 ]
机构：
[1] Maulana Azad Natl Inst Technol, Dept Phys, Opt Nanomat Lab, Bhopal 462051, India
来源：
OPTIK | 2014年 / 125卷 / 17期
关键词：
CuO tetrapod; Hydrothermal; Crystallite size; Williamson-Hall method; Quantum confinement; SOLUTION-PHASE SYNTHESIS; THIN-FILMS; NANOWIRES; NANORODS; PH;
D O I：
10.1016/j.ijleo.2014.04.090
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The present investigation reports one-step template-free hydrothermal synthesis of CuO tetrapods (CuO-T) and its characterization. The CuO tetrapods have been prepared in moderate condition without using any surfactant. The prepared sample was characterized by powder X-ray diffraction (PXRD), Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) spectroscopy, UV-vis-NIR (DRS) spectroscopy and Photoluminescence (PL) spectroscopy. The X-ray diffraction and Fourier transform infrared spectrum analysis confirm clearly the formation of a pure phase high-quality CuO with monoclinic crystal structure. X-ray peak broadening analysis was used to evaluate the average crystallite size (similar to 30 nm) and lattice strain by the Williamson-Hall (W-H) method. Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) result reveals that the particles are tetrapods in shape with an average length similar to 50 nm. Additionally the optical properties were investigated by using UV-vis reflectance spectra with considerable blue-shift in the optical band gap (Eg = 1.45 eV) due to quantum confinement effect. Photoluminescence (PL) spectrum showed both UV as well as visible emission peaks indicating their good optical properties. (C) 2014 Elsevier GmbH. All rights reserved.
引用
收藏
页码：4663 / 4667
页数：5
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