The Photocatalytic Properties of Transition Metal Ion doped TiO2 Nanoparticles ——Photocatalytic Degradation of Rhodamine B

Abstract

Abstract: The transition metal ion-doped TiO₂ nanoparticles were prepared with hydrothermal method, and the effects of doping different metal ions on the ability of TiO₂ in photocatalyzing degradation of rhodamine B(RB) were studied. The results showed that the doping of Fe ³⁺ , Co²⁺ , Ni²⁺ and Cr³⁺ in TiO₂ nanoparticles made the photocatalytic efficiency of the TiO₂ particles reduce and the higher the initial content of Fe³⁺ , the lower the ability of TiO₂ in photocatalyzing the degradation of RB. But the doping of Zn²⁺ and Cd ²⁺ , especially Zn²⁺ , made the photocatalytic efficiency of the TiO₂ particles enhance, showing a great increase of the rate constant(k) and the initial reaction rate(r_ini).

Key words: TiO₂ composite nanoparticles, Photocatalystic degradation, Rhodamine B

CLC Number:

O641

TrendMD:

WANG Yan-Qin, ZHANG Li, CHENG Hu-Min, MA Ji-Ming . The Photocatalytic Properties of Transition Metal Ion doped TiO₂ Nanoparticles ——Photocatalytic Degradation of Rhodamine B[J]. Chem. J. Chinese Universities, 2000, 21(6): 958.

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The Photocatalytic Properties of Transition Metal Ion doped TiO₂ Nanoparticles ——Photocatalytic Degradation of Rhodamine B

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