复合纳米纤维的方法

Method for preparing TinO2n-1/TiO2 composite nano fiber based on phase transformation without reducing agent

Abstract

The invention discloses a method for preparing TinO2n-1/TiO2 composite nano fiber based on phase transformation without a reducing agent. According to the method, H2Ti3O7 nano fiber grown by using a hydrothermal method is adopted as a precursor, and a heating calcining method is implemented in a vacuum environment to cause phase transformation on the precursor, so that the phase transformation temperature of TiO2->TinO2n-1 is reduced; and as the oxygen concentration in the environment is reduced, Ti-O bands on the surface of TiO2 are automatically broken, and thus the TinO2n-1/TiO2 composite nano fiber of different n values can be obtained. The method is simple in process, free of reducing agent in the preparation process and low in reaction temperature; and the prepared composite nano material is good in interface lattice matching and relatively low in mismatching rate and defect density, and can be used for manufacturing visible light catalysts, lithium battery electrodes and the like.
本发明公开了一种基于相转变的无还原剂制备TinO2n‑1/TiO2复合纳米纤维的方法,该方法以水热法生长的H2Ti3O7纳米纤维为前驱体,利用在真空环境中加热煅烧的方法使前驱体发生相转变,降低了TiO2→TinO2n‑1的相转变温度,由于环境中氧浓度的降低,促使TiO2表面的Ti‑O键自行断裂,从而获得具有不同n值的TinO2n‑1/TiO2复合纳米纤维。本发明工艺方法简单,制备过程中无需添加还原剂,且反应温度低,所制备的复合纳米材料界面晶格匹配良好,具有较低的错配度和缺陷密度,可用于制作可见光催化剂、锂电池电极等。

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    CA-2512469-A1July 29, 2004Advanced Power Devices Inc., Richard E. Tressler, James H. Adair, David L. Shelleman, Julie M. AndersonFibres electroconductrices de ti<sb>4</sb>o<sb>7</sb> et de ti<sb>5</sb>o<sb>9</sb>
    CN-105692694-AJune 22, 2016西安电子科技大学Preparation method of Ti3O5/TiO2 mixed-crystal nanofibers

NO-Patent Citations (2)

    Title
    PETER DUNNE ET AL.: "Magnéli Phase Titanium Oxide: Electrochemical Routes and Characterisation", 《ECS TRANSACTIONS》
    张浩 等: "Magnéli相亚氧化钛的制备及其应用", 《电池工业》

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