Photocatalytic Degradation of a Congo red Using ZnO/rutile-<TEX>$TiO_2$</TEX>, ZnO, rutile-<TEX>$TiO_2$</TEX> and CdS

Kim, Chang Suk; 김창석; Ryu, Hae-Ill; 류해일

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

e-Submission

Vol.14, No.3

PubReader Citation

Photocatalytic Degradation of a Congo red Using ZnO/rutile-$TiO_2$, ZnO, rutile-$TiO_2$ and CdS

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

2001, v.14 no.3, pp.259-265

Kim, Chang Suk
Ryu, Hae-Ill

Kim, C. S., & Ryu, H. (2001). Photocatalytic Degradation of a Congo red Using ZnO/rutile-<TEX>$TiO_2$</TEX>, ZnO, rutile-<TEX>$TiO_2$</TEX> and CdS. , 14(3), 259-265.

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Abstract

Photocatalytic degradation of Congo red was performed using various semiconductors as ZnO, CdS, rutile-$TiO_2$ or mixed rutile-$TiO_2$/ZnO. The change of degradation of the dye was investigated by UV-visible spectrophotometric method. The photocatalytic action of CdS was greater than ZnO and rutile-$TiO_2$ in account of low band gap energy of CdS. The rate of photocatalytic degradation reaction increased drastically in according to increasing ratio of ZnO on mixed rutile-$TiO_2$/ZnO. These photocatalytic effect of rutile-$TiO_2$ was suppressed by more stable rutile-$TiO_2$, doping the hydrolysis product with $Zn^{2+}$ prior to calcination onto the rutile-$TiO_2$ surface.