Plectranthus amboinicus leaf extract–assisted biosynthesis of ZnO nanoparticles and their photocatalytic activity

Published Date

March 2015, Vol.41(2):2492–2496, doi:10.1016/j.ceramint.2014.10.069

Title 

Plectranthus amboinicus leaf extract–assisted biosynthesis of ZnO nanoparticles and their photocatalytic activity

• Author 

• Li Fu ^a,b,,
• Zhuxian Fu ^b

• aInstitute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem. Sun Yat-Sen, Nanjing 210014 P. R. China
• bGolden Yuanta Construction Engineering Co., Ltd, Zhejiang 311200, China

Received 10 October 2014. Revised 12 October 2014. Accepted 12 October 2014. Available online 28 October 2014.

Abstract

This article demonstrates the synthesis of ZnO nanoparticles (NPs) using leaf extract of Plectranthus amboinicus. The synthesized ZnO NPs were characterized by UV–vis spectroscopy, SEM, EDX, XRD, FTIR and photoluminescence spectroscopy. SEM study reveals that the biosynthesized ZnO NPs exhibits a rod shape structure with an average size of 88 nm. The UV–vis diffuse reflectance spectrum study indicates the band gap of biosynthesized ZnO NPs is 3.07 eV. Photocatalytic property of the ZnO NPs was investigated by photodegradation of methyl red (MR) under UV illumination. The photocatalytic performance of biosynthesized ZnO NPs was compared with hydrothermal synthesized ZnO NPs and P25. Results show that the biosynthesized ZnO NPs owing a superior photocatalytic activity towards degradation of MR.

Keywords

Biosynthesis

ZnO nanoparticles

Plectranthus amboinicus

Photodegradation

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• DOCX (276K)

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  Corresponding author at: Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem. Sun Yat-Sen, Nanjing 210014 P. R. China.

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