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Citation: ZHANG Li-Li, LV Fu-Jian, LIU Jian-Quan, TANG Chao, WANG Xin. Synthesis of Attapulgite-SnO₂-TiO₂ Nanocomposites and Their Photocatalytic Property[J]. Chinese Journal of Applied Chemistry, ;2010, 27(1): 63-68. shu

Synthesis of Attapulgite-SnO₂-TiO₂ Nanocomposites and Their Photocatalytic Property

a.
a. Jiangsu Key Laboratory for Chemistry of Low-Dimensional materials, Huaiyin Normal University, Huai'an;
b.
b. Nanjing University of Science and Technology, Nanjing 210094

Received Date: 4 January 2009
Available Online: 18 May 2009
Fund Project: 江苏省高校科研成果产业化推进项目(JH08-31) (JH08-31)江苏省教育厅自然科学基金(07KJB430010) (07KJB430010)中国博士后基金(20060400941) (20060400941)江苏省博士后基金(0602003A) (0602003A)淮安市科技(HAG08072) 资助项目 (HAG08072)

Attapulgite（Att） was used as the matrix of SnO₂-TiO₂ hybrid oxide to synthesize a novel kind of composite photocatalyst（Att-SnO₂-TiO₂） by depositing SnO₂-TiO₂ hybrid oxides on the surface of Att via an in stiu sol-gel technique.The obtained products were characterized by means of X-ray diffraction（XRD）,BET surface area and transmission electron microscope（TEM）.Experimental results show that the surface of attapulgite was evenly covered by SnO₂-TiO₂ nanocomposites with particle size around 10 nm.The modification of attapulgite by loading these composites resulted an improvement of its surface morphology while retaining its high surface area.Photocatalytic removal of methyl orange under ultraviolet radiation was studied in the presence of Att composites.Results show that the Att composite photocatalysts presented preferable photocatalytic property,and the photoactivity of the composite photocatalyst decreased in a sequence of Att-SnO₂-TiO₂ >Att-SnO₂ >Att-TiO₂.The Att-SnO₂-TiO₂ exhibited excellent activity and the decomposition rate of methyl orange was up to 99% within 30 min when the Att-SnO₂-TiO₂ powder was used as the photocatalyst.The repeated use of the composite photocatalyst was also confirmed.
- SnO₂-TiO₂,
- photocatalyst,
- attapulgite,
- loading,
- sol-gel technique
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Synthesis of Attapulgite-SnO₂-TiO₂ Nanocomposites and Their Photocatalytic Property