Low temperature synthesis of visible light responsive rutile TiO<sub>2</sub> nanorods from TiC precursor

doi:10.1007/s11705-011-1165-1

Front Chem Sci Eng

2012, Vol. 6

Issue (1) : 53-57 https://doi.org/10.1007/s11705-011-1165-1

RESEARCH ARTICLE

Low temperature synthesis of visible light responsive rutile TiO₂ nanorods from TiC precursor

John TELLAM, Xu ZONG, Lianzhou WANG(

)

ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering and AIBN, the University of Queensland, Brisbane 4072, Australia

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Abstract

A nano-structured TiO₂ with rutile phase was synthesized by using the hydrothermal method from a titanium carbide (TiC) nano-powder precursor at low temperature to produce a stable visible light responsive photocatalyst. The rutile phase was formed at temperature as low as 100°C, and both synthesis time and temperature affected its formation. The rutile particles showed a faceted nano-rod structure, and were tested for absorption and photo-degradation ability under visible light. Particles with shorter synthesis times showed higher visible light absorption and corresponding photo-degradation ability, while those synthesized at lower temperatures had lower, but still evident, degradation ability under visible light.

Keywords photocatalysis rutile TiO₂ hydrothermal visible titanium carbide

Corresponding Author(s): WANG Lianzhou,Email:l.wang@uq.edu.au

Issue Date: 05 March 2012

Cite this article:

John TELLAM,Xu ZONG,Lianzhou WANG. Low temperature synthesis of visible light responsive rutile TiO₂ nanorods from TiC precursor[J]. Front Chem Sci Eng, 2012, 6(1): 53-57.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-011-1165-1
https://academic.hep.com.cn/fcse/EN/Y2012/V6/I1/53

Tab.1 Synthesis parameters and particle sizes of TiO estimated from XRD patterns

Fig.1 X-ray diffraction patterns of TiO samples prepared at different reaction temperatures and time (A) (a) 100°C, 20 h, (b) 140°C, 20 h, (c) 160°, C 20 h, (d) 180°C, 20 h; (B) (a) 180°C, 5 h, (b) 180°C, 10 h, (c) 180°C, 15 h, (d) 180°C, 20 h

Fig.2 TEM images of (a) TiC precursor, and TiO samples prepared at (b) 100°C, 20 h, (c) 140°C, 20 h, (d) 160°C, 20 h, (e) 180°C, 5 h, (f) 180°C, 10 h, (g) 180°C, 15 h, and (h) 180°C, 20 h. The scale bars are 200 nm

Fig.3 UV-Vis diffuse reflectance spectra of TiO samples prepared at different reaction temperatures and time (A) (a) 100°C, 20 h; (b) 140°C, 20 h; (c) 160°C, 20 h; (d) 180°C, 20 h; (B) (a) P25, TiO; (b) 180°C, 5 h; (c) 180°C, 10 h; (d) 180°C, 15 h; (e) 180°C, 20 h

Fig.4 Time courses of pollutant degradation reactions under visible light on TiO samples prepared at (a) 100°C, 20 h, (b) 140°C, 20 h, (c) 160°C, 20 h, (d) 180°C, 5 h, (e) 180°C, 10 h, (f) 180°C, 15 h, and (g) 180°C, 20 h

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