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Controllable one-step synthesis of ZnO nanostructures using molybdophosphoric acid

โœ Scribed by Rashidi, Hamed; Ahmadpour, Ali; Bamoharram, Fatemeh F.; Zebarjad, Seyed Mojtaba; Heravi, Majid M.; Tayari, Faranak

Book ID
121422680
Publisher
Versita
Year
2014
Tongue
English
Weight
515 KB
Volume
68
Category
Article
ISSN
0366-6352

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โœฆ Synopsis

Abstract

ZnO nanostructures were synthesised in a hydrothermal reaction of zinc acetate in the presence of molybdophosphoric acid (H3[PMo12O40]) as well as its vanadium-substituted acid (H4[PMo11VO40]) at various times, temperatures, and concentrations. The ZnO nanostructures were characterised by X-ray diffraction, transmission electron microscopy, and Fourier transform infrared spectroscopy. The results demonstrated that the synthesised products are crystalline with a zincite hexagonal phase. Various ZnO nanostructures, such as nanoparticles, microrods, and nanosheets, were produced by changing the experimental conditions. The photocatalytic degradation of methyl orange was also investigated using the ZnO nanoparticles thus prepared. These particles exhibited high performance in the photocatalytic degradation of MO and almost 100 % decolourisation occurred within only 20 min.

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Controllable synthesis and optical characterizations of ZnO nanostructures by citric acid-assisted annealing process
โœ Zao Yang; Quan-Hui Liu ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 758 KB

By citric acid-assisted annealing process, ZnO nanostructures, including nanorods with diameters ranging from 25 to 88 nm and with length up to 1 mm and polygonal granules with diameters between 200 and 500 nm, were obtained. Morphologies of the ZnO nanostructures were controlled by calcine temperat