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    • 2. 发明申请
    • TITANIA NANOTUBES PREPARED BY ANODIZATION IN CHLORIDE-CONTAINING ELECTROLYTES
    • 通过在含氯化物电解质中阳离子制备的钛酸钠
    • WO2008127508A2
    • 2008-10-23
    • PCT/US2008/002282
    • 2008-02-21
    • NORTHEASTERN UNIVERSITYRICHTER, ChristiaanMENON, LatikaWILLEY, Ronald, J.
    • RICHTER, ChristiaanMENON, LatikaWILLEY, Ronald, J.
    • A61K38/36
    • B82Y30/00
    • A method of preparing titania nanotubes involves anodization of titanium in the presence of chloride ions and at low pH (1-7) in the absence of fluoride. The method leads to rapid production of titania nanotubes of about 25 nm diameter and high aspect ratio. The nanotubes can be organized into bundles and tightly packed parallel arrays. Inclusion of organic acids in the electrolyte solution leads to the incorporation into the nanotubes of up to 50 atom percent of carbon. In a two-stage method, a titanium anode is pre-patterned using a fluoride ion containing electrolyte and subsequently anodized in a chloride ion containing electrolyte to provide more evenly distributed nanotube arrays. The titania nanotubes have uses in composite materials, solar cells, hydrogen production, and as hydrogen sensors.
    • 制备二氧化钛纳米管的方法涉及在氯离子存在下和在不存在氟化物的情况下在低pH(1-7)下阳极氧化钛。 该方法导致快速生产直径约25nm和高纵横比的二氧化钛纳米管。 纳米管可以组织成束和紧密堆叠的平行阵列。 在电解质溶液中包含有机酸导致纳入至多达50原子%碳的纳米管。 在两级方法中,使用含氟离子的电解液对钛阳极进行预图案化,随后在含氯离子的电解质中阳极氧化以提供更均匀分布的纳米管阵列。 二氧化钛纳米管在复合材料,太阳能电池,氢气生产和氢传感器中都有应用。