Preparation method of vanadium-boron co-doping titanium dioxide and nickel oxide composite photocatalyst

The technology of titanium dioxide and nano-titanium dioxide is applied in the field of preparation of boron/vanadium co-doped titanium dioxide and nickel oxide composite nano-photocatalyst, which can solve the problems of low photocatalytic efficiency and low utilization rate of light energy, and achieves large specific surface area and improved Photocatalytic efficiency, the effect of increasing the active area of ​​redox reactions

Active Publication Date: 2014-12-24
UNIV OF SCI & TECH BEIJING
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of low utilization rate of light energy and low photocatalytic efficiency of pure titanium dioxide, the present invention combines two strategies of element doping and semiconductor heterostructure, and expands the efficiency of titanium dioxide through composite doping of non-metallic element boron and transition m

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
  • Preparation method of vanadium-boron co-doping titanium dioxide and nickel oxide composite photocatalyst
  • Preparation method of vanadium-boron co-doping titanium dioxide and nickel oxide composite photocatalyst
  • Preparation method of vanadium-boron co-doping titanium dioxide and nickel oxide composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Dissolve 0.28g of nickel acetate tetrahydrate in 50ml of absolute ethanol and stir for 6 hours at a speed of 400r / min to obtain a light green sol. Maintain the speed and add 11ml of 0.1mol / L mole fraction dropwise to the sol. Oxalic acid ethanol solution, the dropping rate is controlled at 10d / min, then continuously stirred for 12 hours, aged at room temperature for 12 hours to obtain a light green gel, dried in vacuum at 60°C for 6 hours to obtain a light green dry gel, which is ground for later use.

[0026] (2) Mix 40ml of tetrabutyl titanate, 4ml of acetylacetone and 80ml of absolute ethanol evenly, then add 1.8g of vanadyl acetylacetonate, stir at a speed of 350r / min until the vanadyl acetylacetonate is completely dissolved, and seal it for use , marked as liquid A.

[0027] (3) Dissolve 0.42g of boric acid in 10ml of deionized water, adjust the pH to 3 with nitric acid, then add 80ml of absolute ethanol, stir evenly, seal it for use, and mark it as solution B....

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

No PUM Login to view more

Abstract

The invention discloses a preparation method of visible-light response vanadium-boron co-doping titanium dioxide and nickel oxide composite nano photocatalyst, which belongs to the field of preparation and application of a nano material. The preparation method comprises the following steps: (1) preparing nickel oxalate dry gel by adopting nickel acetate tetrahydrate as a precursor; (2) adding the nickel oxalate dry gel in the process for preparing the boron-vanadium co-dopinng nano titanium dioxide in a sol-gel method, so as to further form composite photocatalyst gel; and (3) drying and grinding the gel, and thermally treating the gel to obtain the nano titanium dioxide nickel oxide composite photocatalyst. The photocatalyst prepared in the method is excellent in optical catalytic effect, the light frequency response range is enlarged from an ultraviolet region to a visible light region, and the optical catalytic efficiency is greatly improved. Moreover, the preparation raw material is easy to obtain, the reaction condition is moderate, and byproducts are pollution-free to the environment.

Description

technical field [0001] The invention belongs to the field of preparation and application of nanometer materials, and in particular relates to a preparation method of a boron / vanadium co-doped titanium dioxide and nickel oxide composite nanometer photocatalyst responding to visible light. Background technique [0002] Titanium dioxide, commonly known as titanium dioxide, is widely used in coatings, papermaking, cosmetics and other fields because of its stable chemical properties, insoluble in dilute acids and alkalis, and no biological toxicity. However, with the discovery and development of titanium dioxide photocatalysis, titanium dioxide has become a research hotspot again. The photocatalytic property of titanium dioxide is its ability to convert light energy into chemical energy. When irradiated by ultraviolet light, titanium dioxide absorbs photons, and the electrons on the valence band are excited to the conduction band to form separated electrons and holes. These free ...

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
IPC IPC(8): B01J23/847A61L9/18A61L101/02
Inventor 于浩张佳良王统
Owner UNIV OF SCI & TECH BEIJING
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