Title :
Simple hydrothermal route to synthesise a nanocrystalline ZnO/PVP composite film and its optical property
Author :
Xuejiao Wang ; Zhanwen Pang ; Mingzai Wu ; Xianghua Lu ; Guang Li ; Zhaoqi Sun ; Lide Zhang
Author_Institution :
Eng. Technol. Res. Center of Magn. Mater., Anhui Univ., Hefei, China
fDate :
6/1/2012 12:00:00 AM
Abstract :
A nanocrystalline ZnO/PVP (polyvinylpyrrolidone) composite film was directly prepared on Zn foil via hydrothermal etching method. The microstructure, morphology, photocatalysis and photoluminescence of the composite film were investigated. X-ray diffraction, scanning electron microscopy and transmission electron microscopy indicated that all the nanocrystalline ZnO nanoparticles were embedded in the PVP matrix randomly with a single crystalline hexagonal wurtzite structure. The photoluminescence spectrum of the ZnO/PVP composite film showed enhanced ultraviolet emission and no green emission, which was due to the improved crystal quality of ZnO nanocrystallines. Moreover, the obtained ZnO/PVP film exhibited good photocatalytic activity for decomposing methyl orange.
Keywords :
II-VI semiconductors; X-ray diffraction; catalysis; crystal microstructure; crystal morphology; dissociation; etching; filled polymers; nanocomposites; nanofabrication; nanoparticles; photochemistry; photoluminescence; polymer films; scanning electron microscopy; transmission electron microscopy; wide band gap semiconductors; zinc compounds; X-ray diffraction; Zn; Zn foil; ZnO; crystal quality; hydrothermal etching method; methyl orange decomposition; microstructure; morphology; nanocrystalline ZnO-(polyvinylpyrrolidone) composite film; nanoparticles; photocatalysis; photoluminescence; scanning electron microscopy; simple hydrothermal synthesis; single crystalline hexagonal wurtzite structure; transmission electron microscopy; ultraviolet emission;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2012.0324
