Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of niobium-doped modified stannic oxide quantum dot visible light catalytic material

A technology of tin dioxide and catalytic materials, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problems of low utilization efficiency of visible light and high preparation cost, and achieve Excellent photocatalytic performance, simple preparation process and low cost

Pending Publication Date: 2021-08-10
DALIAN MARITIME UNIVERSITY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention researches and designs a method for preparing a niobium-doped modified tin dioxide quantum dot visible light catalytic material to solve the problem of high preparation cost and low visible light utilization efficiency of existing tin dioxide photocatalytic materials. low level problem

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 niobium-doped modified stannic oxide quantum dot visible light catalytic material
  • Preparation method of niobium-doped modified stannic oxide quantum dot visible light catalytic material
  • Preparation method of niobium-doped modified stannic oxide quantum dot visible light catalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] A method for preparing a niobium-doped modified tin dioxide quantum dot visible light catalytic material, comprising the following steps:

[0028] S1, tin protochloride dihydrate (SnCl 2 2H 2 O) and thiourea (CH 4 N 2 S) mixing and dissolving in deionized water, stirring at 24°C-27°C for 12-36h to obtain a tin dioxide quantum dot solution;

[0029] S2, get ammonium niobate oxalate hydrate (C 2 h 2 o 4 ·x(NH 3 )·x(Nb)) is dissolved in deionized water to form a niobium solution with a niobium concentration of 0.2-0.5mol / L;

[0030] S3. Mix the obtained tin dioxide quantum dot solution and niobium solution, and perform hydrothermal treatment at 160-180° C. for 5-7 hours to obtain niobium-doped tin dioxide quantum dots.

[0031] Preferably, in step S1, the mass ratio of stannous chloride dihydrate to thiourea is (25-32):1, and the concentration of the tin dioxide quantum dot solution is 0.17-0.22 mol / L. In step S3, the particle size of the niobium-doped tin dioxide...

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 sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a niobium-doped modified stannic oxide quantum dot visible light catalytic material, and the method comprises the following steps: S1, mixing and dissolving stannous chloride dehydrate and thiourea in deionized water, and performing stirring at 24-27 DEG C for 12-36 hours to obtain a stannic oxide quantum dot solution; S2, taking and dissolving the ammonium niobate oxalate hydrate in deionized water, and preparing a niobium solution with the niobium concentration being 0.2 mol / L to 0.5 mol / L; S3, mixing the obtained tin dioxide quantum dot solution with the niobium solution, and carrying out hydrothermal treatment at 160-180 DEG C for 5-7 hours to obtain the niobium-doped tin dioxide quantum dots. The tin dioxide quantum dots are doped with niobium, so that the photocatalytic performance is improved, photocatalysis can be carried out under the action of sunlight, the preparation process is simple, and the cost is low.

Description

technical field [0001] The invention belongs to the field of quantum dot preparation, and in particular relates to a preparation method of a niobium-doped modified tin dioxide quantum dot visible light catalytic material. Background technique [0002] Semiconductor photocatalysts can use semiconductor materials to absorb external radiant light energy to excite conduction band electrons and valence band holes, and then undergo a series of chemical reactions with substances adsorbed on the surface of the catalyst. At present, traditional semiconductor photocatalysts (such as TiO 2 , ZnO, etc.) have disadvantages such as low photon quantum efficiency, easy deactivation, and low solar energy utilization rate, which makes it difficult for semiconductor photocatalytic technology to be put into practical applications. Therefore, the research and development of new high-efficiency semiconductor photocatalysts has become a research hotspot in the field of photocatalysis. [0003] T...

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): B01J23/20B01J37/10A62D3/17A62D101/20
CPCB01J23/20B01J23/002B01J37/10A62D3/17A62D2101/20B01J35/23B01J35/39Y02W10/37
Inventor 邵嘉赵丛姗申彤安李可维陈乐郭超勐崔家源邓凯刘剑桥符策
Owner DALIAN MARITIME UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com