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首页> 外文期刊>RSC Advances >Preparation of a titanium metal electrode with a nitrogen-doped one-dimensional titanium oxide surface layer for the support of catalysts
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Preparation of a titanium metal electrode with a nitrogen-doped one-dimensional titanium oxide surface layer for the support of catalysts

机译：用氮气掺杂的一维氧化钛表面层制备钛金属电极，用于催化剂的载体

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摘要

A Ti metal electrode with nanostructured titanium oxide that possesses high electrical conductivity, a large specific surface area and the capacity for supporting catalysts was prepared by a simple solution and heat treatment. A precursor of the electrode that possesses one-dimensional hydrogen titanate, H2Ti3O7, 600 nm in thickness was produced by soaking the metal in 5 M NaOH at 60 degrees C and subsequently in a 0.5 mM HCl solution at 40 degrees C. The treated metal had a high specific surface area approximately 100 times higher than theoretical flat surface, but its scratch resistance was low. The heat treatment of the hydrogen titanate at 650 degrees C for 1 h under air increased the scratch resistance markedly, but resulted in the development of an electric insulated surface layer that was composed of anatase and rutile. In contrast, when heat-treated under an N-2 atmosphere, the hydrogen titanate was transformed into anatase containing a small amount of Ti4O7, TiN, TiNxO1-x and Ti2N, which exhibited a relatively higher electrical conductivity that was in the range of semiconducting materials. It was also shown that the treated metal immobilized 1,1'-ferrocenylbis(phosphonic acid) by forming a Ti-O-P bond and thereby induced a high electric current upon cyclic voltammetry, although the treated metal before the ferrocene modification showed almost no electric current. Thus, the treated Ti metal is expected to be useful as an electrode for various types of electrochemical systems due to its high specific surface area, electrical conductivity and large capacity for supporting catalysts.
机译：通过简单的溶液和热处理制备具有高导电性的纳米结构氧化钛的Ti金属电极，具有高电导率，大的比表面积和支撑催化剂的能力。通过在60℃下浸泡在5M NaOH中，在60℃下浸泡在5m NaOH中，并在40℃下浸泡在5m NaOH中，产生厚度的一维氢钛酸盐的电极的前体。用0.5mM HCl溶液。处理过的金属高比表面积比理论平坦表面高约100倍，但其耐刮擦性低。在650℃下钛酸盐的热处理在空气下催力下降，显着增加了耐刮擦性，但导致由锐钛矿和金红石组成的电绝缘表面层的发展。相反，当在N-2气氛下进行热处理时，将钛酸氢盐转化到含有少量Ti4O7，锡，TiNXO-X和Ti2N的锐钛矿中，其表现出在半导体范围内的相对较高的电导率材料。还表明，通过形成Ti-OP键并采用循环伏安法在循环伏安时诱导高电流的经处理的金属固定了1,1'-二碳基比斯（膦酸），但在二茂铁改性之前的处理金属显示几乎没有电流。 。因此，由于其高比表面积，导电性和用于支撑催化剂的大容量，预期处理的Ti金属作为各种类型电化学系统的电极可用作。

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  • 来源
    《RSC Advances》 |2015年第59期|共8页
  • 作者

    Yamaguchi Seiji; Khanna Rohit; Matsushita Tomiharu; Wang Ang; Ohta Takehiro; Naruta Yoshinori; Takadama Hiroaki;

  • 作者单位

    Chubu Univ Grad Sch Biomed Sci Kasugai Aichi 4878501 Japan;

    Chubu Univ Grad Sch Biomed Sci Kasugai Aichi 4878501 Japan;

    Chubu Univ Grad Sch Biomed Sci Kasugai Aichi 4878501 Japan;

    Kyushu Univ Inst Mat Chem &

    Engn Higashi Ku Fukuoka 8128581 Japan;

    Kyushu Univ Inst Mat Chem &

    Engn Higashi Ku Fukuoka 8128581 Japan;

    Kyushu Univ Inst Mat Chem &

    Engn Higashi Ku Fukuoka 8128581 Japan;

    Chubu Univ Grad Sch Biomed Sci Kasugai Aichi 4878501 Japan;

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  • 中图分类 化学;
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