Organic phosphorylated titanium dioxide micrballon-filled chitosan hybrid membrane as well as preparation and application

A technology of phosphating titanium dioxide and titanium dioxide, which is applied in the treatment of dyed low molecular organic compounds, fibrous fillers, electrochemical generators, etc., to achieve the effects of rich raw material sources, uniform and controllable particle size, and high proton conductivity
CN101624449AInactive Publication Date: 2010-01-13TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2010-01-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an organic phosphorylated titanium dioxide micrballon-filled chitosan hybrid membrane as well as a preparation and an application. The hybrid membrane is prepared by taking tetrabutyl titanate, glycol, organic phosphoric acid and chitosan as raw materials according to the following matching: the mole ratio of tetrabutyl titanate and glycol is 1:30-1:60 to prepare titanium dioxide micrballon, the mass volume ratio of titanium dioxide micrballon and organic phosphoric acid is 1:4-6, the mass ratio of titanium dioxide micrballon and chitosan is 0.05-0.2:1. The preparation method is as follows: the mixed solution of tetrabutyl titanate and glycol are precipitated in acetone water solution, washed and dried to obtain titanium dioxide micrballon which is put into organic phosphoric acid water solution for standing, the micrballon is put into glacial acetic acid water solution for ultrasound dispersion and is added with chitosan to obtain casting solution which subjects to casting on a substrate (glass plate) and is dried to form a membrane for crosslinking in sulphuric acid water solution, then washing and vacuum drying. The titanium dioxide micrballon and the membrane of the invention have rich source of raw materials, low cost and simple operation, and the prepared hybrid membrane has lower methanol permeability and higher proton conductivity, and can be used as direct methanol fuel cell membrane.
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Description

technical field

[0001] The invention relates to a chitosan hybrid membrane filled with organophosphorylated titanium dioxide microspheres capable of conducting protons, as well as its preparation and application. More specifically, the present invention is a phosphorylated titanium dioxide microsphere utilizing organic phosphoric acid (aminotrimethylene phosphonic acid and hydroxyethylene diphosphonic acid), and comprising organophosphorylated titanium dioxide microspheres, and has reduced permeability to methanol, Chitosan hybrid membrane with enhanced proton conductivity and improved thermal stability. Background technique

[0002] Fuel cells use renewable resources instead of non-renewable resources to generate energy, and are recognized as one of the main technologies for future energy. A fuel cell is a high-efficiency power generation device that directly converts the chemical energy of fuel into electrical energy by electrochemical reaction without combustion. It has ...

Claims

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