New green synthesized reduced graphene oxide–ZrO2 composite as high performance photocatalyst under sunlight

K. Gurushantha; K. S. Anantharaju; L. Renuka; S. C. Sharma; H. P. Nagaswarupa; S. C. Prashantha; Y. S. Vidya; H. Nagabhushana

doi:10.1039/C6RA25823A

New green synthesized reduced graphene oxide–ZrO₂ composite as high performance photocatalyst under sunlight

K. Gurushantha,^a K. S. Anantharaju,*^bc L. Renuka,^ac S. C. Sharma,^dc H. P. Nagaswarupa,^a S. C. Prashantha,

^a Y. S. Vidya

*^e and H. Nagabhushana*^f

Author affiliations

* Corresponding authors

^a Department of Science, Research Center, East West Institute of Technology, Bengaluru – 560091, India

^b Department of Chemistry, Dayananda Sagar College of Engineering, Shavige Malleshwara Hills, Kumaraswamy Layout, Bengaluru – 560078, India
E-mail: iamananthkurupalya@gmail.com

^c Dr. D. Premachandra Sagar Centre for Advanced Materials, DSCE, Bangalore – 560078, India

^d Department of Mechanical Engineering, Jain University, Advisor, Jain Group of Institutions, Bengaluru – 560069, India

^e Department of Physics, Lal Bahadur Shastry Government First Grade College, Bengaluru – 560032, India
E-mail: vidyays.phy@gmail.com

^f Prof. C.N.R. Rao Centre for Advanced Materials, Tumkur University, Tumkur – 572103, India
E-mail: bhushanvlc@gmail.com

Abstract

We report a green route method for the effective reduction of graphene oxide using Cinnamon extract. ZrO₂ nanomaterial synthesized via facile green induced method and zirconia–reduced graphene oxide nanocomposite (NC) synthesized by reflux method. The structural properties of the prepared NC had been characterized using PXRD, SEM, TEM, Raman, PL and XPS analysis. Further, the excellent photocatalytic properties of NC for the decomposition of reactive blue 4 compared to commercial P25 can be attributed to its excellent electrical properties and well connected arrangement derived from the structural reward of the ZrO₂ and rGO support. This results in significant electron-acceptor/transport of graphene materials that effectively decrease the photo-generated electron–hole recombination thereby enhancing the absorption of light. It opens new window to use this eco-friendly, simple and low cost method to synthesize reduced graphene-based composite materials.

RSC Advances

New green synthesized reduced graphene oxide–ZrO₂ composite as high performance photocatalyst under sunlight

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