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Method for improving photoluminescence of nano anatase TiO#-[2]

A photoluminescence and nano-anatase technology, applied in the field of nano-composite optical materials, can solve the problems of TiO2 and nano-TiO2 that have not been reported in the literature

Inactive Publication Date: 2005-03-16
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

As far as the inventor knows, TiO 2 Especially nano TiO 2 The research on radiation grafting modification has not been reported in the literature

Method used

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  • Method for improving photoluminescence of nano anatase TiO#-[2]
  • Method for improving photoluminescence of nano anatase TiO#-[2]
  • Method for improving photoluminescence of nano anatase TiO#-[2]

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Embodiment Construction

[0024] Accurately weigh the dried nano-TiO in a petri dish 2 , with weight w 0 =533.5mg, adopt the method of the present invention to use J2 type electron electrostatic accelerator to nanometer TiO 2 Carry out co-radiation of electron beam with MMA, the obtained radiation grafted powder constant weight w=589.5mg, therefore, grafting rate G=(w-w 0 ) / w 0 × 100% = 10.5%; through testing, it can be seen that anatase TiO 2 Fluorescence spectra of nanopowders (such as Figure 5 shown) the results show that: after radiation grafting, nano-TiO 2 The luminescence in the blue-green light band of 430-530nm is significantly enhanced, and the luminous intensity of the peak 458nm (blue light) is 3.7 times that of the original.

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Abstract

The invention disclose a method for improving photoluminescence of nano anatase TiO#-[2] by employing an electron beam co-radiation method in the environment of atmospheric temperature and normal atmosphere, wherein methyl methacrylate is grafted on the nanocrystalline surface of the anatase titanium dioxide (Anatase. A-TiO2). The processed anatase TiO2 nano powder can be combined firmly with methyl methacrylate (MMA) through chemical bonds.

Description

technical field [0001] The invention belongs to the field of nanocomposite optical materials, and it particularly relates to nanometer TiO 2 Material. Background technique [0002] Grafting polymers on the surface of nanoparticles is a typical one-step synthesis method for preparing nanocomposites [X.L.Xu, Y.Yin, X.Ge, H.K.Wu, Z.Zhang, Mater.Lett. (Material Letters), 37( 1998) 354.H.S.Zhou, T.Wada, H.Sasabe, Appl.Phy.Lett. (Applied Physics Letters), 1996 68 (9) 1288.], can be synthesized in one step at normal temperature and pressure, simple and effective, and can Make the nano phase particles dispersed evenly. Grafting polymers on the surface of inorganic particles is one of the most effective methods to change the interfacial compatibility between inorganic particles and polymer matrix, and to prepare nano-inorganic particles / polymer composites with excellent performance. So far, research on the preparation of inorganic / organic nanocomposites by radiation grafting has m...

Claims

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Application Information

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IPC IPC(8): C09K11/08
Inventor 祖小涛向霞
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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