Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method

doi:10.1088/1674-1056/25/7/077803

中国物理B ›› 2016, Vol. 25 ›› Issue (7): 77803-077803.doi: 10.1088/1674-1056/25/7/077803

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method

Alireza Samavati, A F Ismail, Hadi Nur, Z Othaman, M K Mustafa

1 Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310 UTM, Skudai, Johor, Malaysia;
2 Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia;
3 Faculty of Science Technology and Human Development, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia

收稿日期:2016-01-31 修回日期:2016-03-21 出版日期:2016-07-05 发布日期:2016-07-05
通讯作者: A F Ismail E-mail:afauzi@utm.my
基金资助:
Project supported by the Universiti Teknologi Malaysia (UTM) (Grant No. R. J1300000.7809.4F626). Dr. Samavati is thankful to RMC for postdoctoral grants.

Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method

Alireza Samavati^1,2, A F Ismail², Hadi Nur¹, Z Othaman¹, M K Mustafa³

1 Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, 81310 UTM, Skudai, Johor, Malaysia;
2 Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia;
3 Faculty of Science Technology and Human Development, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia

Received:2016-01-31 Revised:2016-03-21 Online:2016-07-05 Published:2016-07-05
Contact: A F Ismail E-mail:afauzi@utm.my
Supported by:
Project supported by the Universiti Teknologi Malaysia (UTM) (Grant No. R. J1300000.7809.4F626). Dr. Samavati is thankful to RMC for postdoctoral grants.

摘要/Abstract

摘要： Zn_1-xCu_xO (x=0.00, 0.01, 0.03, and 0.05) nanoparticles are synthesized via the sol-gel technique using gelatin and nitrate precursors. The impact of copper concentration on the structural, optical, and antibacterial properties of these nanoparticles is demonstrated. Powder x-ray diffraction investigations have illustrated the organized Cu doping into ZnO nanoparticles up to Cu concentration of 5% (x= 0.05). However, the peak corresponding to CuO for x=0.01 is not distinguishable. The images of field emission scanning electron microscopy demonstrate the existence of a nearly spherical shape with a size in the range of 30-52 nm. Doping Cu creates the Cu-O-Zn on the surface and results in a decrease in the crystallite size. Photoluminescence and absorption spectra display that doping Cu causes an increment in the energy band gap. The antibacterial activities of the nanoparticles are examined against Escherichia coli (Gram negative bacteria) cultures using optical density at 600 nm and a comparison of the size of inhibition zone diameter. It is found that both pure and doped ZnO nanoparticles indicate appropriate antibacterial activity which rises with Cu doping.

关键词: Cu-doped ZnO nanoparticles, photoluminescence, antibacterial, E. coli

Abstract: Zn_1-xCu_xO (x=0.00, 0.01, 0.03, and 0.05) nanoparticles are synthesized via the sol-gel technique using gelatin and nitrate precursors. The impact of copper concentration on the structural, optical, and antibacterial properties of these nanoparticles is demonstrated. Powder x-ray diffraction investigations have illustrated the organized Cu doping into ZnO nanoparticles up to Cu concentration of 5% (x= 0.05). However, the peak corresponding to CuO for x=0.01 is not distinguishable. The images of field emission scanning electron microscopy demonstrate the existence of a nearly spherical shape with a size in the range of 30-52 nm. Doping Cu creates the Cu-O-Zn on the surface and results in a decrease in the crystallite size. Photoluminescence and absorption spectra display that doping Cu causes an increment in the energy band gap. The antibacterial activities of the nanoparticles are examined against Escherichia coli (Gram negative bacteria) cultures using optical density at 600 nm and a comparison of the size of inhibition zone diameter. It is found that both pure and doped ZnO nanoparticles indicate appropriate antibacterial activity which rises with Cu doping.

Key words: Cu-doped ZnO nanoparticles, photoluminescence, antibacterial, E. coli

中图分类号: (Nanocrystals, nanoparticles, and nanoclusters)

78.67.Bf

78.55.-m (Photoluminescence, properties and materials) 87.55.de (Optimization)

Alireza Samavati, A F Ismail, Hadi Nur, Z Othaman, M K Mustafa. Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method[J]. 中国物理B, 2016, 25(7): 77803-077803.

Alireza Samavati, A F Ismail, Hadi Nur, Z Othaman, M K Mustafa. Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method[J]. Chin. Phys. B, 2016, 25(7): 77803-077803.

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Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method

Spectral features and antibacterial properties of Cu-doped ZnO nanoparticles prepared by sol-gel method

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