Morphology engineering of ZnO nanostructures for enhanced photocatalytic efficiency of In(OH)3/ZnO nanocomposite

Effect of Morphology-based Defect Structure of ZnO Nanostructures in Photo-Degradation of Organic Dye

MRS Proceedings ◽

10.1557/opl.2014.727 ◽

2014 ◽

Vol 1672 ◽

Cited By ~ 1

Author(s):

Reza Shidpour ◽

Manouchehr Vosoughi ◽

Abdolreza Simchi ◽

Faegheh Ghanbari

Keyword(s):

Defect Structure ◽

Aqueous Suspension ◽

Organic Dye ◽

Zno Nanostructures ◽

Photocatalytic Efficiency ◽

Porous Network ◽

Sem Images ◽

Photo Degradation ◽

Annealing Temperatures ◽

Zinc Oxides

ABSTRACTThe fabrication of strong photocatalysts applied to the degradation of organic pollutants is necessary in environmental applications. In a single-stage method, acetate precursor and poly vinyl pyrolydine are used to produce ZnO nanostructures with various morphologies in annealing temperatures ranging from 300 °C to 900 oC. The physical properties of the prepared nanostructures were characterized by SEM, XRD and PL spectroscopy. The SEM images exhibit a variety of the as-prepared hexagonal zinc oxides including wires, rods, particles and porous network of welded particles of ZnO nanoparticles. The results of the photocatalytic degradation of methylene blue as an organic dye in aqueous suspension showed that the morphology of ZnO nanostructures influences on the photocatalytic efficiency of ZnO nanostructures, greatly. For the best result, the highest MB degradation occurs by ZnO nanowires within 16 minutes and in others samples, degradation of higher than 95 percent occurs within 20 minutes. The XRD and PL spectroscopy revealed neither VZn nor Oi are in all of samples but only VO−, VO2− and Zni exist in ZnO nanostructures.

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Synthesis of 1D, 2D, and 3D ZnO Polycrystalline Nanostructures Using the Sol-Gel Method

Journal of Nanotechnology ◽

10.1155/2012/712850 ◽

2012 ◽

Vol 2012 ◽

pp. 1-8 ◽

Cited By ~ 11

Author(s):

Yung-Kuan Tseng ◽

Ming-Hung Chuang ◽

Yen-Cheng Chen ◽

Chao-Hsien Wu

Keyword(s):

Phase Transition ◽

Zinc Acetate Dihydrate ◽

Sol Gel ◽

Formation Mechanisms ◽

Zno Nanostructures ◽

Photocatalytic Efficiency ◽

Acetate Dihydrate ◽

Synthetic Process ◽

Good Crystallinity ◽

2D And 3D

This study employed various polyol solvents to synthesize zinc oxide polycrystalline nanostructures in the form of fibers (1D), rhombic flakes (2D), and spheres (3D). The synthetic process primarily involved the use of zinc acetate dihydrate in polyol solutions, which were used to derive precursors of zinc alkoxides. Following hydrolysis at 160°C, the zinc alkoxide particles self-assembled into polycrystalline nanostructures with different morphologies. Following calcination at 500°C for 1 h, polycrystalline ZnO with good crystallinity was obtained. FE-SEM explored variations in surface morphology; XRD was used to analyze the crystalline structures and crystallinity of the products, which were confirmed as ZnO wurtzite structures. FE-TEM verified that the ZnO nanostructures were polycrystalline. Furthermore, we employed TGA/DSC to observe the phase transition. According to the results of property analyses, we proposed models of the relevant formation mechanisms. Finally, various ZnO structures were applied in the degradation of methylene blue to compare their photocatalytic efficiency.

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Synthesis of Ag/ZnO nanostructures by different methods and investigation of their photocatalytic efficiency for 4-nitrophenol degradation

Applied Surface Science ◽

10.1016/j.apsusc.2013.07.015 ◽

2013 ◽

Vol 284 ◽

pp. 80-86 ◽

Cited By ~ 79

Author(s):

B. Divband ◽

M. Khatamian ◽

G.R. Kazemi Eslamian ◽

M. Darbandi

Keyword(s):

Zno Nanostructures ◽

Photocatalytic Efficiency ◽

Nitrophenol Degradation

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Synthesis of butterfly-like ZnO nanostructures and study of their self-reducing ability toward Au3+ ions for enhanced photocatalytic efficiency

Physical Chemistry Chemical Physics ◽

10.1039/c5cp07187a ◽

2016 ◽

Vol 18 (6) ◽

pp. 4577-4584 ◽

Cited By ~ 19

Author(s):

Xueling Song ◽

Yumeng Liu ◽

Yan Zheng ◽

Kun Ding ◽

Shijie Nie ◽

...

Keyword(s):

Photocatalytic Performance ◽

The Self ◽

Zno Nanostructures ◽

Photocatalytic Efficiency ◽

Reducing Ability

Hierarchical ZnO–Au composites exhibiting enhanced photocatalytic performance were synthesized by utilizing the self-reducing ability of the as-obtained ZnO.

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