MingWei Xiao et al 2008 Nanotechnology 19 015706 doi:10.1088/0957-4484/19/01/015706
MingWei Xiao1, LiShi Wang2,3, YanDan Wu1, XinJian Huang2 and Zhi Dang1
Show affiliationsNanoscopic CdS particles are decorated into the microchannel with nanometre-scale diameter of titanate nanotubes (TNTs) by using nonionic thioacetamide (TAA) as a sulfide precursor (labelled as CdS(TAA)/TNTs). The characterizations by XPS, TEM, XRD, Raman spectroscopy and UV–vis absorption confirm that CdS nanoparticles with smaller size and more homogeneous dispersion are obtained by using a TAA precursor in contrast to the particles predominantly formed on the surface of TNTs by adding ionic Na2S as a precursor (labelled as CdS(Na2S)/TNTs). As is expected, the photocatalytic activities of the nanosized CdS sensitized TNTs nanocrystal materials were superior to those of simple CdS and TNTs in the oxidation of rhodamine B under visible light irradiation. Furthermore, the comparison of photocatalysis activity between CdS(TAA)/TNTs and CdS(Na2S)/TNTs is also discussed.
78.30.Fs III-V and II-VI semiconductors
Condensed matter: electrical, magnetic and optical
Issue 1 (9 January 2008)
Received 8 September 2007, in final form 24 October 2007
Published 29 November 2007
MingWei Xiao et al 2008 Nanotechnology 19 015706
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