Method for controlling nano-anatase TiO* feature with NaAc as additive agent

An anatase and additive technology, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., to achieve the effect of simple preparation process, uniform particle size, and easy promotion

Inactive Publication Date: 2008-05-07
DONGHUA UNIV
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

NaAc is used as an additive to control the nano-anatase TiO 2 Morphological research has not been reported in the literature

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for controlling nano-anatase TiO* feature with NaAc as additive agent
  • Method for controlling nano-anatase TiO* feature with NaAc as additive agent
  • Method for controlling nano-anatase TiO* feature with NaAc as additive agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] a) Weigh 0.02mol of titanium isopropoxide, add 0.01mol of triethanolamine, add deionized water to prepare 0.5mol / l Ti 4+ solution;

[0023] b) Mix 10ml of the solution in step a) with the same volume of deionized water;

[0024] c) The solution obtained in b) is adjusted to a pH value of 9.5 with NaOH solution, and then aged in a hydrothermal reactor at 100° C. for 24 hours;

[0025] d) Aging the viscous colloid in step c) for 72 hours in a hydrothermal reactor at 140°C.

[0026] Nano anatase TiO prepared by this method 2 The XRD (X-ray diffraction, X-ray diffraction) analysis is shown in accompanying drawing 2, and its transmission electron microscope picture is shown in accompanying drawing 3 (a), and particle diameter is 21 nanometers.

Embodiment 2

[0028] a) Weigh 0.02moL titanium isopropoxide, add 0.01moL triethanolamine, add deionized water to prepare 0.5moL / L Ti 4+ solution;

[0029] b) prepare the sodium acetate solution of 0.5moL / L;

[0030] c) Mix 10mL of the solution in step a) with the same volume of deionized water, and take 10mL of the solution in b) and mix evenly;

[0031] d) The solution obtained in c) is adjusted to a pH value of 9.5 with NaOH solution, and aged in a hydrothermal reactor at 100° C. for 24 hours;

[0032] e) Aging the viscous colloid in step d) for 96 hours in a hydrothermal reaction kettle at 130°C.

[0033] Nano anatase TiO prepared by this method 2 See accompanying drawing 2 for its XRD analysis, and its transmission electron micrograph is shown in accompanying drawing 3 (c), and the particle diameter is 20.2×38.0 nanometers.

Embodiment 3

[0035] a) Weigh 0.02moL titanium isopropoxide, add 0.01moL triethanolamine, add deionized water to prepare 0.5moL / L Ti 4+ solution;

[0036] b) prepare the sodium acetate solution of 1.0moL / L;

[0037] c) Mix 10mL of the solution in step a) with the same volume of deionized water, and take 10mL of the solution in b) and mix evenly;

[0038] d) adjust the solution obtained in c) to pH 9.5 with NaOH solution, and age at 110° C. for 36 hours;

[0039] e) Aging the viscous colloid in step d) at 120° C. for 96 hours.

[0040] Nano anatase TiO prepared by this method 2 See accompanying drawing 2 for its XRD analysis, and its transmission electron micrograph is shown in accompanying drawing 3 (d), and the particle size is 23.1×48.4 nanometers.

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for controlling the appearance of the anatase Tio2 by taking NaAc as additive. The method comprises the steps as follow: (1) isopropyl titanate is used as the raw material and trolamine is used as stabilizing agent, and then water is added into to form the Ti4+ solution, and the mol rate of trolamine and isopropyl titanate is 0: 1.0; (2) water is added into the Ti4+ solution in the same volume of the Ti4+ solution and then is mixed evenly; (3) the additive NaAc which is used for controlling the appearance is added into, and the solution PH value is adjusted to implement a first aging so as to obtain viscolloid; and (4) the nanometer anatase Tio2 grain is obtained after being aged by gelling. The anatase TiO2 prepared with the invention has the advantages of even granularity, good dispersivity, simple preparation technology and easy generalization, thereby being capable of controlling the appearance into a cube shape and a stick shape.

Description

technical field [0001] The invention belongs to the field of nano-titanium dioxide powder, in particular to a method of using NaAc as an additive to control nano-anatase TiO 2 method of appearance. Background technique [0002] Recent studies have shown that not only the size and size of nanomaterials affect their properties, but also their morphology has a significant impact on their various properties. Current research focuses on obtaining nanoparticles with different shapes by changing different preparation techniques, such as sol-gel method, hydrothermal method, and gas phase method. However, there are few reports on the use of additives as shape control agents for nanomaterials. [0003] Nano-titanium dioxide powder is a new type of inorganic material, because of its small particle size, large specific surface area, photocatalysis, strong ultraviolet absorption ability, non-toxic, high catalytic activity, good stability and other advantages, it has attracted widesprea...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B82B3/00
Inventor 周兴平倪似愚张霄
Owner DONGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap