A method for preparing titanium dioxide microspheres with anatase micro-nano hierarchical structure
A technology of titanium dioxide and hierarchical structure, applied in the field of micro-nano materials, can solve the problems of insufficient regularity of microspheres, large diameter, long time consumption, etc., and achieve the effects of short preparation time, good crystallinity and simple preparation process
Inactive Publication Date: 2018-06-29
HEBEI UNIV OF ENG
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This process takes a long time to stir evenly, which takes a long time; and the diameter of the prepared titanium dioxide microsphere rod is about 100nm, and the diameter of the microsphere is about 2-5 microns. The diameter of the rod in the nanometer microsphere is large, and the microsphere is not enough. regular
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] The preparation of titanium dioxide microspheres with anatase-type micro-nano hierarchical structure includes the following steps: the first step is to pour 1.5 milliliters of titanium tetrachloride into 3.5 milliliters of dichloromethane under the condition of 0 ℃ ice-water bath, and stir evenly; the second Step 1: Mix 10 ml of aqueous solution containing 0.8mmol / L CTAB with the solution of the first step, and stir for 1 min. Step 3: Pour the mixed solution into a 20mL reactor at 150-200°C for 3 hours, and open the reactor after cooling down naturally. The precipitate in the lower layer was removed by centrifugation, washed three times with deionized water and ethanol, and dried at 40° C. for 1 hour to obtain titanium dioxide microspheres with micro-nano structure.
[0028] 1. Electron microscope scanning test.
[0029] Titanium dioxide microspheres prepared in Example 1 are scanned with a scanning electron microscope to obtain the following: figure 1 SEM image shown....
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a method for preparing anatase titanium dioxide microspheres of a micro-nano hierarchical structure, belongs to the field of micro-nano materials, and is used for solving the problems of a complicated preparation technology, low elapsed time, low repeatability, irregular microspheres and poor crystallinity in the prior art. The method comprises the steps of firstly pouring titanium tetrachloride into dichloromethane under the condition of an ice-water bath at 0 DEG C and stirring evenly; mixing 0.8mol / L of CTAB water solution and the solution obtained in the first step and stirring for 1min; and finally pouring the mixed solution into a reaction kettle for reaction at 150-200 DEG C for 3h, naturally cooling, opening the reaction kettle, centrifuging, taking lower-layer sediments, cleaning through deionized water and ethyl alcohol and drying to obtain the titanium dioxide microspheres of the micro-nano hierarchical structure. According to the method, the preparation technology is simple, the elapsed time is short, the repeatability is high, microspheres are regular and the crystallinity is good.
Description
technical field [0001] The invention belongs to the field of micro-nano materials, and specifically relates to a method for preparing anatase-type micro-nano hierarchical structure titanium dioxide microspheres. Background technique [0002] Due to its surface effect, small size effect, quantum size effect, and macroscopic quantum tunneling effect, nanomaterials have the characteristics of singular mechanics, magnetism, heat, optics, and chemical activity that conventional materials do not have. It has important application value in the fields of technology, metallurgy, aviation, light industry, medicine and so on. However, in the actual use process, it is found that nano powders also have many problems. For example, although nano powder materials have high activity and large specific surface area, their structure is unstable and easy to agglomerate, which leads to a decrease in performance, and it is difficult to separate and recycle after use. , especially in liquid-phase...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053
CPCC01G23/0536C01P2002/72C01P2004/03C01P2004/32C01P2004/61
Inventor 母静波郭增彩
Owner HEBEI UNIV OF ENG