TiO2 nuclear shell structure nano rod array coated with carbon bed and preparation method thereof

A nanorod array, core-shell structure technology, applied in nanostructure manufacturing, nanotechnology, nanotechnology and other directions, can solve the problem of no literature report on the preparation method of nanorod array, and achieve the advantages of charge separation, improved loading, process simple effect
CN101786597AInactive Publication Date: 2010-07-28XIANGTAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIANGTAN UNIV
Publication Date
2010-07-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a TiO2 nuclear shell structure nano rod array coated with carbon bed, the core of the nano rod is TiO2 nano rod, the diameter thereof is 20-100nm, the shell thereof is the carbon bed, the thickness thereof is 2-10nm. The preparation method has the following steps: a) under the condition of solvent heat condition, interface reaction of non-polar solvent / hydrophilic matrix is employed to prepare the TiO2 nano rod with surface modified by oleic acid; b) with the protection of inert gas, warming calcination is carried out to obtain the TiO2 nuclear shell structure nano rodcoated with carbon bed. The invention has the following beneficial effects: under the condition of solvent heat condition, interface reaction of non-polar solvent / hydrophilic matrix is employed to prepare the TiO2 nano rod with surface modified by oleic acid, then warming calcination is carried out to carbonize oleic acid on the surface to prepare the TiO2 nuclear shell structure nano rod array coated with carbon bed, with such steps, the invention features simple process and low cost, can prepare a large area of TiO2 nano rod array; in addition, the nano rod array features good crystallization performance, large specific surface area, is beneficial to improving charge capacity of the dye, adsorption to pollutants, charge separation of a photoproduction current carrier and increasing quantum yield, thus being capable of being widely applied to fields such as photocatalysis and O / E conversion.
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Description

technical field

[0001] The present invention relates to a kind of TiO 2 Nanorod arrays and methods of making them. Background technique

[0002] Nano-titanium dioxide has a wide range of applications in the fields of photocatalysis, dye-sensitized solar cells, gas sensors and nano-devices. 1D TiO 2 Nanorods are used in the separation of photogenerated charges, the lifetime of charges, the inhibition of charge recombination, the transport of charges (also known as electronic highways, Suzuki, Eur.J.Chem, 2006: 476), and the scattering of light And many other aspects have incomparable advantages of nanoparticles. Constructing array-ordered one-dimensional TiO 2 The nanorod photoelectrode can transmit photogenerated electrons along one-dimensional nanomaterials and conductive substrates, thereby effectively reducing electron-hole recombination and improving quantum yield. Therefore, it has very important theoretical research value and good practical application prospect. ...

Claims

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