Journal
MATERIALS LETTERS
Volume 167, Issue -, Pages 141-144Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.12.156
Keywords
Semiconductors; Nanocrystalline materials; Nanocomposites; Photocatalysis
Funding
- UTARRF schemes from Universiti Tunku Abdul Rahman [UTARRF/2015-C1/L02, UTARRF/2015-C1/S04]
- Ministry of Higher Education of Malaysia under the Fundamental Research Grant Scheme [FRGS/1/2015/TK02/UTAR/02/2]
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ZnO nanorods were prepared via a green and surfactant-free hydrothermal approach using ZnO powder and 30 vol% H2O2 aqueous solution. X-ray diffraction results revealed that the synthesized ZnO product was highly crystalline having hexagonal wurtzite structure. The band gap energy of ZnO nanorods was determined to be 3.28 eV using optical reflectance spectrum. The rod-like morphological features of ZnO nanostructures were observed from field-emission scanning electron microscopy, transmission electron microscopy and high-resolution transmission electron microscopy. The synthesized ZnO product showed an enhanced photocatalytic performance compared to the commercial TiO2 for the phenol degradation, which could be ascribed to its special structure feature. The Nb2O5/ZnO and Cr2O3/ZnO nanocomposites were also prepared and displayed enhanced photocatalytic efficiency after decorating metal oxide nanoparticles on the surface of ZnO nanorods. (C) 2015 Elsevier B.V. All rights reserved.
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