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Reaction Kinetics, Mechanisms and Catalysis

, Volume 115, Issue 2, pp 759–772 | Cite as

Photodegradation of dyes by a novel TiO2/u-RuO2/GNS nanocatalyst derived from Ru/GNS after its use as a catalyst in the aerial oxidation of primary alcohols (GNS = graphene nanosheets)

  • Mayakrishnan Gopiraman
  • Sundaram Ganesh Babu
  • Zeeshan Khatri
  • Byoung-Suhk Kim
  • Kai Wei
  • Ramasamy Karvembu
  • Ick Soo KimEmail author
Article

Abstract

Ruthenium nanoparticles (RuNPs) supported on graphene nanosheets (GNS), a composite (Ru/GNS), were prepared by a dry synthesis method and were used as nanocatalysts for the aerial oxidation of various primary alcohols. Ru/GNS was highly efficient, selective, stable and heterogeneous in nature. Owing to the high stability of the used catalyst (u-Ru/GNS), it was further applied in a different catalytic system viz photocatalytic degradation, after suitable modifications. We have obtained a novel TiO2/u-RuO2/GNS catalyst from u-Ru/GNS by the sol-gel method. The catalytic activity of TiO2/u-RuO2/GNS toward the photodegradation of methyl orange (MO) and acridine orange (AO) was found to be excellent. Overall, the sustainable use of these recyclable materials (Ru/GNS and TiO2/u-RuO2/GNS) could lead to economic and environmental benefits.

Keywords

Graphene nanosheets Ruthenium oxide nanoparticles Aerial oxidation Recycling Titania Photocatalytic degradation 

Notes

Acknowledgments

This work was supported by the Grant-in-Aid for Global COE program by the Ministry of Education, Culture, Sports, Science, and Technology, Japan.

Supplementary material

11144_2015_861_MOESM1_ESM.doc (1.1 mb)
Supplementary material 1 (DOC 1134 kb)

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2015

Authors and Affiliations

  • Mayakrishnan Gopiraman
    • 1
  • Sundaram Ganesh Babu
    • 1
    • 2
  • Zeeshan Khatri
    • 1
  • Byoung-Suhk Kim
    • 3
  • Kai Wei
    • 4
  • Ramasamy Karvembu
    • 5
  • Ick Soo Kim
    • 1
    Email author
  1. 1.Nano Fusion Technology Research Lab, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER)National University Corporation Shinshu UniversityNaganoJapan
  2. 2.SRM Research InstituteSRM UniversityKattankulathurIndia
  3. 3.Department of Organic Materials & Fiber EngineeringChonbuk National UniversityJeonjuRepublic of Korea
  4. 4.College of Textile Clothing EngineeringSoochow UniversitySuzhouChina
  5. 5.Department of ChemistryNational Institute of TechnologyTiruchirappalliIndia

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