Preparation of carbon coated TiO2 nanotubes film and its catalytic application for H2 generation
Preparation of carbon coated TiO2 nanotubes film and its catalytic application for H2 generation
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DOI：
10.1016/j.catcom.2010.11.015
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发表时间：
2011-02
影响因子：
3.7
通讯作者：
Fangzhou Jia;Zhongping Yao;Zhaohua Jiang;Chunxiang Li
中科院分区：
文献类型：
--
作者：
Fangzhou Jia;Zhongping Yao;Zhaohua Jiang;Chunxiang Li
采用阳极氧化和气体热渗透两步工艺成功制备了碳包覆TiO 2纳米管（C-NTs）薄膜。采用SEM、XRD、XPS和拉曼光谱对薄膜的形貌和结构进行了表征。TiO 2纳米管的长度和孔径分别约为300 nm和60 nm。在气体热渗透过程中，随着热处理温度的升高，薄膜的相组成由非晶态转变为晶态的金红石和金红石。碳纳米管薄膜中的包覆碳部分石墨化，薄膜在可见光区具有较强的光响应。光催化性能测试表明，C-TNTs薄膜对Na 2S + Na 2SO 3溶液的光催化分解活性高于TNTs薄膜。
Carbon coated TiO2nanotubes (C-TNTs) film was successfully prepared by a two-step process of anodization and gas thermal penetration. The morphologies and structures of C-TNTs films were characterized by SEM, XRD, XPS and Raman spectroscopy. The length and the pore diameter of TiO2nanotubes (TNTs) are approximately 300nm and 60nm, respectively. The phase compositions of TNTs films were converted from amorphous to crystalline anatase and rutile with increasing heat treatment temperature during the gas thermal penetration. The coated carbon in the C-TNTs films is partly graphitized and the films have a strong photo response in the visible region. The photo catalytic tests show that the C-TNTs films reveal higher photocatalytic activity for splitting Na2S+Na2SO3solution into H2, compared with the TNTs film.