Hydrothermally synthesized highly dispersed Na2Ti3O7 nanotubes and their photocatalytic degradation and H2 evolution activity under UV and simulated solar light irradiation

S. V. Prabhakar Vattikuti; Police Anil Kumar Reddy; Narendra Bandaru; Jaesool Shim; Chan Byon

Korean Journal of Chemical Engineering, Vol.35, No.4, 1019-1025, April, 2018

DOI10.1007/s11814-017-0355-z Export Citation

Hydrothermally synthesized highly dispersed Na2Ti3O7 nanotubes and their photocatalytic degradation and H2 evolution activity under UV and simulated solar light irradiation

S. V. Prabhakar Vattikuti^†, Police Anil Kumar Reddy¹, Narendra Bandaru², Jaesool Shim^†, and Chan Byon¹

School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Korea
¹School of Mechanical and Nuclear Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
²Department of Material Science and Engineering, IIT Gandhi Nagar, Ahmedabad, India

E-mail:,

Photocatalytic water splitting technologies are currently being considered for alternative energy sources. However, the strong demand for a high H2 production rate will present conflicting requirements of excellent photoactivity and low-cost photocatalysts. The first alternative may be abundant nanostructured titanate-related materials as a photocatalyst. Here, we report highly dispersed Na2Ti3O7 nanotubes synthesized via a facile hydrothermal route for photocatalytic degradation of Rhodamine B (RhB) and the water splitting under UV-visible light irradiation. Compared with commercial TiO2, the nanostructured Na2Ti3O7 demonstrated excellent photodegradation and water splitting performance, thus addressing the need for low-cost photocatalysts. The as-synthesized Na2Ti3O7 nanotubes exhibited desirable photodegradation, and rate of H2 production was 1,755 μmol·g-1·h-1 and 1,130 μmol·g-1·h-1 under UV and simulated solar light irradiation, respectively; the resulting as-synthesized Na2Ti3O7 nanotubes are active in UV light than that of visible light response.

Keywords:Photocatalysts;Na2Ti3O7;Hydrogen Evolution;Pollutants;Renewable Energy

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