A kind of preparation method of tantalum oxide nanosheet
A nanosheet and nanomaterial technology, applied in the field of nanomaterial preparation, can solve the problems of limited resources, high price of precious metal catalysts, and inability to be applied on a large scale, and achieve the effect of high purity and impurity-free preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0014] In this embodiment, Ta 1.1 o 1.05 The preparation process of the nanosheets is as follows: the (NH4) prepared by the hydrothermal method 2 Ta 2 o 3 f 6 Nanomaterials are used as precursors, in an air atmosphere (containing oxygen), at a heating rate of 5 °C / min to 600 °C for 3 hours, and after cooling in the furnace, Ta 1.1 o 1.05 Nanosheets.
[0015] The (NH4) used in this embodiment 2 Ta 2 o 3 f 6 The preparation method of the precursor is as follows:
[0016] Metal tantalum powder, hydrofluoric acid with a mass fraction of 40%, analytically pure acetic acid, urea and deionized water are used as raw materials. The steps are as follows: (1) Mix hydrofluoric acid and metal tantalum powder at a molar ratio (3-12): 1, and stir well until the metal tantalum powder is dissolved; (2) Mix deionized water and glacial acetic acid according to the volume ratio ( 0.17~6): 1 mixed evenly; and the acetic acid solution was gradually dropped into the mixed solution obtain...
Embodiment 2
[0020] The present embodiment is different from Example 1 in that (NH4) prepared by hydrothermal method 2 Ta 2 o 3 f 6 Nanopowders were used as precursors in an air atmosphere (containing oxygen), and the temperature was raised to 700°C at a rate of 5°C / min and kept for 3 hours. Other is identical with embodiment 1; Can obtain Ta 1.1 o 1.05 Nanosheets.
[0021] The obtained white powder after heat treatment is subjected to X-ray diffraction phase analysis (XRD), and the obtained XRD spectrum is as follows image 3 shown. Its XRD diffraction peak and Ta 1.1 o 1.05 phase (PDF 01-072-2219); and there is no other crystal impurity phase in this spectrum; this shows that (NH4) 2 Ta 2 o 3 f 6 As a precursor, single-phase, high-purity Ta 1.1 o 1.05 Nanosheets.
[0022] Figure 4 For the prepared Ta 1.1 o 1.05 A scanning electron microscope (SEM) image of a nanomaterial, which has a uniform nanosheet morphology with a length of 0.3-0.5 μm; a width of 0.2-0.5 μm and a ...
Embodiment 3
[0024] The present embodiment is different from Example 1 in that (NH 4 ) 2 Ta 2 o 3 f 6 The nanopowder was used as a precursor, and was kept at a temperature of 550 °C for 5 hours in an air atmosphere (containing oxygen) at a heating rate of 1 °C / min. Other is identical with embodiment 1; Can obtain Ta 1.1 o 1.05 Nanosheets.
PUM
| Property | Measurement | Unit |
|---|---|---|
| density | aaaaa | aaaaa |
| width | aaaaa | aaaaa |
| width | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More