Synthesis of PbS-K₂La₂Ti₃O₁₀ composite and its photocatalytic activity for hydrogen production

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• 作者：Wenquan Cui^a ; ^{wkcui@163.com} ; Yueli Qi^a ; Li Liu^a ; Dipak Rana^b ; Jinshan Hu^a ; Yinghua Liang^a ; ^{liangyh64@yahoo.com}
• 关键词：K2La2Ti3O10 ; Microwave irradiation ; PbS ; Intercalation ; Hydrogen production ; Catalytic performance
• 刊名：Progress in Natural Science
• 出版年：2012
• 期刊代码：P49_10020071
• 类别：env
• 出版时间：April, 2012
• 卷：22
• 期：2
• 页码：120-125
• 文件大小：566 K

摘要

Photocatalyst, lead sulfide (PbS)-intercalated layer perovskite-type compound (K₂La₂Ti₃O₁₀), was synthesized via ion-exchange reaction, butylamine pillaring and sulfuration processes under the assistance of the microwave irradiation. The structure of the photocatalysts was determined by means of powder X-ray diffraction, scanning electron microscope, ultraviolet-visible diffuse reflection spectra and photoluminescence measurement. And the photocatalytic activity of the composite compound for hydrogen production was also investigated. The experimental results showed that the intercalation of PbS in the layered space of K₂La₂Ti₃O₁₀ greatly improved the absorption edge and the photocatalytic activity. Hydrogen production of the PbS-K₂La₂Ti₃O₁₀ was 127.19 mmol/(g cat) after 3 h irradiation of ultraviolet light.