Green synthesis of zinc oxide nanoparticles by aloe barbadensis miller leaf extract: Structure and optical properties

Published Date
Received 29 January 2011, Revised 17 June 2011, Accepted 29 July 2011, Available online 26 August 2011.

Author
GunalanSangeethaa. Numbers and letters correspond to the affiliation list. Click to expose these in author workspace. Author links open the author workspace.SivarajRajeshwaria. Numbers and letters correspond to the affiliation list. Click to expose these in author workspaceOpens the author workspaceOpens the author workspace. Author links open the author workspace.RajendranVenckateshb. Numbers and letters correspond to the affiliation list. Click to expose these in author workspace

a

Department of Biotechnology, School of Life Sciences, Karpagam University, Eachanari Post, Coimbatore 641 021, Tamilnadu, India

b

Faculty of Chemistry, Government Arts College, Udumalpet 642 126, Tamilnadu, India

https://doi.org/10.1016/j.materresbull.2011.07.046

Abstract

Biological methods for nanoparticle synthesis using microorganisms, enzymes, and plants or plant extracts have been suggested as possible ecofriendly alternatives to chemical and physical methods. In this paper, we report on the synthesis of nanostructured zinc oxide particles by both chemical and biological method. Highly stable and spherical zinc oxide nanoparticles are produced by using zinc nitrate and Aloe vera leaf extract. Greater than 95% conversion to nanoparticles has been achieved with aloe leaf broth concentration greater than 25%. Structural, morphological and optical properties of the synthesized nanoparticles have been characterized by using UV–Vis spectrophotometer, FTIR, Photoluminescence, SEM, TEM and XRD analysis. SEM and TEM analysis shows that the zinc oxide nanoparticles prepared were poly dispersed and the average size ranged from 25 to 40 nm. The particles obtained have been found to be predominantly spherical and the particle size could be controlled by varying the concentrations of leaf broth solution.

Highlights

► Biological methods for nanoparticle have been suggested as possible ecofriendly alternatives to chemical and physical methods. ► In this paper, we report on the synthesis of nanostructured zinc oxide particles by both chemical and biological method. ► Highly stable and spherical zinc oxide nanoparticles are produced by using zinc nitrate and Aloe vera leaf extract. ► The particles were predominantly spherical and size could be controlled by varying the concentrations of leaf broth solution. ► The zinc oxide nanoparticles from Aloe vera leaf are expected to have applications in biomedical and cosmetic industries.

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