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Method for preparation of super long fibrous titanium dioxide by taking cellulosic fibers as template

A cellulose fiber and titanium dioxide technology, which is applied in fiber processing, textiles and papermaking, etc., can solve the problems of difficulty in reaching the length of fibrous materials, complicated processes, and single source, and achieve the effects of low cost, wide source of raw materials, and uniform diameter.

Inactive Publication Date: 2015-04-01
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems that the length of the fibrous material prepared by the existing method is difficult to reach more than 15 μm, and the process is complicated, the source is single, the cost is high and the output is low. TiO2 method

Method used

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  • Method for preparation of super long fibrous titanium dioxide by taking cellulosic fibers as template
  • Method for preparation of super long fibrous titanium dioxide by taking cellulosic fibers as template
  • Method for preparation of super long fibrous titanium dioxide by taking cellulosic fibers as template

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specific Embodiment approach 1

[0023] Specific Embodiment 1: In this embodiment, a method for preparing ultra-long fibrous titanium dioxide using cellulose fibers as a template is carried out through the following steps: 1. After cleaning and drying the natural fibers, disperse them in deionized water to obtain natural Fiber dispersion; Wherein, natural fiber is the fiber of cotton, hemp, wool, silk or bamboo;

[0024] 2. Add titanium tetrachloride to the natural fiber dispersion obtained in step 1, and stir magnetically for 0.5 to 2 hours at a stirring rate of 50r / min to 300r / min under ice-water bath conditions to obtain TiOH attached 3+ Dispersions of natural fibers;

[0025] 3. Under the condition of ice-water bath, attach TiOH to the obtained step 2 3+ Add (NH 4 ) 2 SO 4 and HCl solution with a mass percentage of 1% to 3%, and then magnetically stirred at a stirring rate of 50r / min to 300r / min for 0.5 to 2h, and then heated and stirred to obtain TiOSO attached 4 Dispersions of natural fibers;

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specific Embodiment approach 2

[0034] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the length of the natural fiber described in step 1 is millimeter or centimeter level, and the fiber of cotton, linen, wool, silk and bamboo with a diameter of 5-50 μm . Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the cleaning in step 1 refers to using water or absolute ethanol to clean the surface of the natural fiber. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a method for the preparation of super long fibrous titanium dioxide by taking cellulosic fibers as a template, relates to the method for the preparation of the super long fibrous titanium dioxide, and aims to solve the problems caused by the existing method that the prepared fibrous material cannot reach more than 15mu m in length; and the process is complicated, the sources are single, the cost is high and the yield is low. The method provided by the invention comprises the following steps: 1) preparing a natural fiber dispersion liquid; 2) preparing the dispersion liquid of natural fibers bonded with TiOH<3+>; 3) preparing the dispersion liquid of the natural fibers bonded with TiOSO4; 4) preparing the natural fibers bonded with titanium dioxide; 5) preparing natural wet fibers with core-shell structures bonded with the titanium dioxide; 6) preparing organic-titanium dioxide fibers with the core-shell structures; and 7) sintering at a high temperature and demolding the template. The method is applied to the fields of photoelectric materials, sensors, medicine release, energy storage materials, single molecule probes, neural signal detection and the like.

Description

technical field [0001] The invention relates to a method for preparing ultra-long fibrous titanium dioxide. Background technique [0002] Natural biomass fibers are natural polymers, including plant fibers and animal fibers, which widely exist in nature. The main component of plant fiber is cellulose, also known as natural cellulose fiber. It is the fiber obtained from seeds, fruits, stems, leaves, etc. of plants. In addition to pulp fibers, according to the different parts of the herbaceous plants, it is also divided into: 1. Seed fibers (cotton, kapok, etc.); 2. Leaf fibers (sisal, abaca, etc.); 3. Stem fibers (ramie , flax, hemp, jute, bamboo, etc.). Animal fibers are natural protein fibers, which are divided into 1. Hair category: sheep hair, goat hair, camel hair, rabbit hair, yak hair, etc.; and 2. Glandular secretions: mulberry silk, tussah silk, etc. The mature technology of the textile and papermaking industries makes the annual output of natural biomass fibers ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/46
Inventor 李坚卢芸孙庆丰刘一星
Owner NORTHEAST FORESTRY UNIVERSITY
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