Visible light photocatalytic water splitting for hydrogen production from N-TiO 2 rice grain shaped electrospun nanostructures

Veluru Jagadeesh Babu, Manippady K. Kumar, Appukuttan Sreekumaran Nair, Tan Lee Kheng, Suleyman I. Allakhverdiev, Seeram Ramakrishna

    Research output: Contribution to journalArticlepeer-review

    128 Citations (Scopus)

    Abstract

    We report on the visible light-driven hydrogen production from splitting of water molecules by nitrogen-doped TiO 2 (N-TiO 2) with a rice grain-like nanostructure morphology. The N-TiO 2 nanostructures are prepared using sol-gel and electrospinning methods followed by post-annealing of the composite nanofibers. The nanostructures are characterized by microscopy and spectroscopy. First order rate constants for the visible light-assisted photocatalysis in the degradation of methylene blue (MB) dye are found to be 0.2 × 10 -3 and 1.8 × 10 -3 min -1 for TiO 2 and N-TiO 2 (5 wt% of nitrogen), respectively. The N-TiO 2 utilized in water splitting experiments and evaluated hydrogen (H 2) of 28 and 2 μmol/h for N-TiO 2 and TiO 2, respectively. The improvement may be attributed due to the N-doping and higher surface area as ∼70 m 2/g.

    Original languageEnglish
    Pages (from-to)8897-8904
    Number of pages8
    JournalInternational Journal of Hydrogen Energy
    Volume37
    Issue number10
    DOIs
    Publication statusPublished - May 2012

    Keywords

    • Electrospinning
    • H production
    • Hybrid nanostructures
    • Photocatalysis

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Fuel Technology
    • Condensed Matter Physics
    • Energy Engineering and Power Technology

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