CdS-K2La2Ti3-xNbxO10复合物的制备及

其光催化性能研究

Abstract

Abstract: K₂La₂Ti₃O₁₀ was firstly prepared by stearic acid method and K₂La₂Ti₃-xNbxO₁₀ was obtained through the doping of Nb ions.Then proton exchange，and amine pillared/Cd ion exchange were conducted by microwave method.Finally，CdS-K₂La₂Ti₃-xNbxO₁₀ catalyst was prepared by curing reaction.The catalyst was characterized by X-ray diffraction，scanning electron microscopy，and UV-Vis diffuse reflectance spectroscopy.The photocatalytic activities of K₂La₂Ti₃O₁₀，K₂La₂Ti₃-xNbxO₁₀，and CdS-K₂La₂Ti₃-xNbxO₁₀ for the degradation of rhodamine B were also investigated under UV and visible light irradiation.Results revealed that the Nb ions doping and CdS intercalation widened the range of visible light absorption，inhibited the recombination efficiency of photo-induced electrons and holes，and greatly enhanced the photocatalytic activity of catalyst.At the same time，it was exhibited more excellent activity than those of K₂La₂Ti₃O₁₀ and K₂La₂Ti₃-xNbxO₁₀ catalysts.

Key words: photocatalysis, rhodamine B, potassium lanthanum titanate, doping, intercalation

CLC Number:

TQ135.12

CUI Wen-Quan, AN Wei-Jia, LIU Li, QI Yue-Li, LIANG Ying-Hua, ZHANG Ting. Preparation of CdS-pillared K2La2Ti3-xNbxO10 composite and photocatalytic properties thereof[J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(8): 56-.

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Preparation of CdS-pillared K2La2Ti3-xNbxO10 composite and photocatalytic properties thereof

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