In-situ nitrogen doping and boron modification of nanocrystalline titania powders by chemical vapour synthesis | Zendy

Md. Imteyaz Ahmad | Zendy; Subramshu Bhattacharya | Zendy; Horst Hahn | Zendy

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In-situ nitrogen doping and boron modification of nanocrystalline titania powders by chemical vapour synthesis

Author(s) -

Md. Imteyaz Ahmad,

Subramshu Bhattacharya,

Horst Hahn

Publication year - 2009

Publication title -

processing and application of ceramics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.326

H-Index - 15

eISSN - 2406-1034

pISSN - 1820-6131

DOI - 10.2298/pac0903113a

Subject(s) - nanocrystalline material , materials science , boron , electron paramagnetic resonance , spectroscopy , doping , titanium , chemical vapor deposition , inorganic chemistry , chemical engineering , nuclear chemistry , nanotechnology , nuclear magnetic resonance , metallurgy , organic chemistry , chemistry , physics , optoelectronics , quantum mechanics , engineering

During the chemical vapour synthesis (CVS) of nanocrystalline titania doping and/or modification can be di- rectly carried out in-situ by using an additional precursor. In this study, nitrogen doped nanocrystalline titania powders and boron modified nanocrystalline titania powders were synthesised by CVS. The resultant powders were characterised by X-ray diffraction (XRD) and UV-vis spectroscopy. In both cases, a red shift in the band gap of titania was seen. Electron paramagnetic resonance spectroscopy (EPR) showed the presence of nitro- gen in the titania lattice. Solid state nuclear magnetic resonance (NMR) spectroscopy showed that boron in titania was present in BO 4 coordination with the oxygen atoms.

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