Zinc oxide/Chitosan biocompatible nanocomposites: Preparation, Characterization and its use in Congo red dye photodegradation

Chaitanya Lakshmi G, Kusha Sharma, Swathi Krishna


Zinc oxide/chitosan biocompatible nanocomposites have been successfully synthesized by co-precipitation method. The samples were characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy dispersive X ray Flurescence spectroscopy (EDAX) and Fourier transformation infrared spectroscopy (FTIR). The photocatalytic efficiency and photostability of the sample was investigated systematically for Congo red degradation under solar light irradiation. UV-vis Spectroscopy was employed to investigate the optical properties and photocatalysis behavior of the Zinc oxide/Chitosan composites. It was shown that zinc oxide/chitosan biocompatible nanocomposites could drive to a plausible strategy for developing finest photocatalyst to degrade wastewaters by using solar light.


Congo red, Zincoxide/Chitosan conjugate, photocatalysis, photo degradation

Full Text:



Zhu, H., Jiang, R., Fu, Y., Guan, Y., Yao, J., Xiao, L., & Zeng, G. (2012). Effective photocatalytic decolorization of methyl orange utilizing TiO 2/ZnO/chitosan nanocomposite films under simulated solar irradiation. Desalination, 286, 41-48.

Robinson, T., McMullan, G., Marchant, R., & Nigam, P. (2001). Remediation of dyes in textile effluent: a critical review on current treatment technologies with a proposed alternative. Bioresource technology, 77(3), 247-255.

Ullah, I., Ali, S., Hanif, M. A., & Shahid, S. A. (2012). Nanoscience for environmental remediation: a review. International Journal of Chemical and Biochemical Sciences, 2(1), 60-77.

Dhanavel, S., Nivethaa, E. A. K., Narayanan, V., & Stephen, A. (2014). Photocatalytic activity of Chitosan/ZnO nanocomposites for degrading methylene blue. International Journal of ChemTech Research, 6(3), 1880-82.

Zhang, H., Zong, R., & Zhu, Y. (2009). Photocorrosion inhibition and photoactivity enhancement for zinc oxide via hybridization with monolayer polyaniline. The Journal of Physical Chemistry C, 113(11), 4605-4611.

Dinesh, V. P., Biji, P., Ashok, A., Dhara, S. K., Kamruddin, M., Tyagi, A. K., & Raj, B. (2014). Plasmon-mediated, highly enhanced photocatalytic degradation of industrial textile dyes using hybrid ZnO@ Ag core–shell nanorods. RSC Advances, 4(103), 58930-58940.

Hou, Y., Zuo, F., Dagg, A., & Feng, P. (2012). Visible Light-Driven α-Fe2O3 Nanorod/Graphene/BiV1–x Mo x O4 Core/Shell Heterojunction Array for Efficient Photoelectrochemical Water Splitting. Nano letters, 12(12), 6464-6473.

Shoeib, M. A., Abdel Salam, O. E., Khafagi, M. G., & Hammam, R. E. (2011). Effect of Cuprous oxide-Chitosan nanocomposites on Methyl orange Degradation. Galvanotechnik, 102(5), 1027.

Lakshmi, G. C., Ananda, S., Somashekar, R., & Ranganathiah, C. Photocatalytic Behaviour of Ag-RuO2 Nanocomposites Synthesized by Electrochemical Method.

Lakshmi, G. C., Ananda, S., & Somashekar, R. (2012). Semiconductor-assisted photodegradation of dye and pesticide by ZnO: Ru and ZnO/RuO2/AgO nanocomposites, synthesised by electrolytic method. Int J Adv Sci Technol, 5, 40-67.

Singh, S., Barick, K. C., & Bahadu, D. (2013). Functional Oxide Nanomaterials and Nanocomposites for the Removal of Heavy Metals and Dyes Nanomaterial and nanotechnology (2013).

Lakshmi, G. C., Ananda, S., Somashekar, R., & Ranganathaiah, C. (2012). Synthesis of ZnO/MgO nanocomposites by electrochemical method for photocatalytic degradation kinetics of eosin yellow dye. Int J Nano Sci Nanotechnol, 3, 47-63.


  • There are currently no refbacks.