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Synthesis of N and F co-doped TiO2 nanophotocatalysts for degradation of malathion in water

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Abstract

N and F codoped nanophotocatalysts were synthesized by sol–gel method and their photocatalytic activity were studied for the degradation of insecticide malathion. Photocatalysts were characterised by X-ray diffraction (XRD), scanning electron microscope, transmission electron microscope and micro Raman spectroscopy to determine the structural, morphological properties and phase composition. The particle size calculated by XRD are in agreement with the measured value by TEM. Band gap calculated by absorption spectra shows a shift in the absorption edge towards longer wavelength side. Photoluminescence spectra show emission behaviour of synthesized photocatalysts. In comparison with undoped TiO2, N, F codoped particles exhibits higher photocatalytic activity due to generation of more reactive oxidative species (ROS). Mechanism of ROS generation is graphically discussed.

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Acknowledgments

We are thankful to Director, National Institute of Technology, Kurukshetra for providing characterisation facilities in the department of Physics. We are also thankful to Dr. Vishal Kumar, Head, Centre of Material Science at Natonal Institute of Technology, Hamirpur for providing micro raman facility. The authors, A. K. Srivastava and J. S. Tawale, thank the Director, CSIR—National Physical Laboratory, New Delhi, for providing necessary infrastructural facilities to carry out microstructural characterization. The projects, NanoSHE (BSC-0112) and DST (SR/NM/NS-97/2010), are gratefully acknowledged.

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Authors and Affiliations

  1. National Institute of Technology, Kurukshetra, 136119, India

    Bhanu Pratap Dhamaniya, Ashavani Kumar & J. S. Tawale

  2. CSIR-National Physical Laboratory, New Delhi, 110012, India

    A. K. Srivastava & J. S. Tawale

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  1. Bhanu Pratap Dhamaniya
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  2. Ashavani Kumar
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  3. A. K. Srivastava
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  4. J. S. Tawale
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Correspondence to Ashavani Kumar.

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Dhamaniya, B.P., Kumar, A., Srivastava, A.K. et al. Synthesis of N and F co-doped TiO2 nanophotocatalysts for degradation of malathion in water. Res Chem Intermed 43, 387–399 (2017). https://doi.org/10.1007/s11164-016-2629-1

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