Synthesis of C-Doped TiO<sub>2</sub> Nanoparticles by Novel Sol-Gel Polycondensation of Resorcinol with Formaldehyde for Visible-Light Photocatalysis

Rohit Misra, Prabir Kumar Bera, Rita Dhodapkar, Snejana Bakardjieva, Zdenĕk Bastl

Synthesis and Reactivity in Inorganic Metal-Organic and Nano-Metal Chemistry · 2010 · 11 citations · 17 references

Concepts

Abstract

Nanosized C-doped TiO 2 was prepared by a new method based on resorcinol-formaldehyde (RF) gel formation in situ during hydrolysis of Ti precursor (TTIP, titanium tetraisopropoxide). XRD, DRS, EDX, SEM and HRTEM results confirmed that the carbon in the sample existed as free carbon (C–C), carbonate carbon (–CO 3 ) and doped into lattice of TiO 2 (Ti–C), resulting in red shift of optical adsorption edge and band gap narrowing. The photo activity of the C-doped TiO 2 , tested on 2-chlorophenol, revealed that it was more active under visible light (k vis = 3.50 × 10 −3 min −1 ).

References

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