Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method and application of a carbon nitride/bismuth selenate composite material

A composite material, bismuth selenate technology, applied in catalyst activation/preparation, chemical instruments and methods, oxidation preparation of carbonyl compounds, etc., can solve the problem of no research report on nano-composite photocatalysts, etc. Simple process effect

Active Publication Date: 2020-03-10
FUZHOU UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However preparation C 3 N 4 and Bi 2 SeO 5 The study of nanocomposite photocatalysts has not been reported yet

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 and application of a carbon nitride/bismuth selenate composite material
  • Preparation method and application of a carbon nitride/bismuth selenate composite material
  • Preparation method and application of a carbon nitride/bismuth selenate composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Mix 2 mmol of bismuth carbonate and 3 mmol of selenium powder evenly, place them in a muffle furnace, and calcinate at 500 °C for 3 h in a hydrogen-nitrogen mixed atmosphere with a hydrogen content of 20 v / v% (the heating rate is 5 ℃ / min), the obtained solid sample is Bi 2 SeO 5 ;

[0023] (2) Add 0.5 g of urea powder into water, heat to 100 ℃ to dissolve, then add 10 g of Bi under the action of ultrasound 2 SeO 5 powder, stirred for 6 hours, cooled to room temperature, centrifuged and dried in an oven at 80 °C, the dried sample was fully ground and placed in a tube furnace, mixed with hydrogen and nitrogen with a hydrogen content of 0.5v / v% In air, calcined at 350 °C for 2 h (heating rate 1 °C / min), you can get g-C 3 N 4 / Bi 2 SeO 5 Composite; the resulting sample is denoted as C / B-5 wt%.

Embodiment 2

[0025] (1) Mix 2 mmol of bismuth carbonate and 3 mmol of selenium powder evenly, place them in a muffle furnace, and calcinate at 500 °C for 3 h in a hydrogen-nitrogen mixed atmosphere with a hydrogen content of 0.5 v / v% (heating rate is 5 ℃ / min), the obtained solid sample is Bi 2 SeO 5 ;

[0026] (2) Add 2 g of urea powder into water, heat to 100 °C to dissolve, then add 10 g of Bi 2 SeO 5 powder, stirred for 6 hours, cooled to room temperature, centrifuged and dried in an oven at 80 °C, the dried sample was fully ground and placed in a tube furnace, in a hydrogen-nitrogen mixture with a hydrogen content of 20v / v% , calcined at 500 °C for 2 h (heating rate 3 °C / min), to obtain g-C 3 N 4 / Bi 2 SeO 5 Composite; the resulting sample is noted as C / B-20 wt%.

Embodiment 3

[0028] (1) Mix 2 mmol of bismuth carbonate and 3 mmol of selenium powder evenly, place them in a muffle furnace, and calcinate at 500 °C for 3 h in a hydrogen-nitrogen mixed atmosphere with a hydrogen content of 10 v / v% (the heating rate is 10 ℃ / min), the obtained solid sample is Bi 2 SeO 5 ;

[0029] (2) Add 3 g of urea powder into water, heat to 100 °C to dissolve, then add 10 g of Bi 2 SeO 5 powder, stirred for 6 hours, cooled to room temperature, centrifuged and dried in an oven at 80 °C, the dried sample was fully ground and placed in a tube furnace, mixed with hydrogen and nitrogen with a hydrogen content of 0.5v / v% In air, calcined at 400 °C for 2 h (heating rate 5 °C / min), you can get g-C 3 N 4 / Bi 2 SeO 5 Composite; the resulting sample is denoted as C / B-30 wt%.

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 and application of a carbon nitride / bismuth selenate composite material and belongs to the technical field of material preparation and photocatalysis. Thepreparation method disclosed by the invention comprises the following steps: adding a certain amount of urea powder into water, heating to a temperature of 100 DEG C to be dissolved, adding Bi2SeO5 powder under an ultrasonic action, stirring for 6 hours, cooling to room temperature, centrifuging and drying in a drying oven at a temperature of 80 DEG C, fully grinding the dried sample, and calcining in a tube furnace in a reducing atmosphere, thereby obtaining the g-C3N4 / Bi2SeO5 complex. The preparation process is very simple, and organic surfactants or template agents and the like do not needto be added. Meanwhile, the equipment requirement in the synthetic process is low, and no other expensive synthesis equipment or high-temperature high-pressure reaction device is needed, which facilitates large-scale popularization. The composite photocatalyst is applied to visible-light selective organic synthesis.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic composite material preparation, and in particular relates to a preparation method and application of a carbon nitride / bismuth selenate composite material. Background technique [0002] Semiconductor photocatalysis technology has attracted extensive attention from scholars because of its mild reaction conditions, no secondary pollution, low cost, and obvious potential in the fields of sewage treatment and photolysis of water to produce hydrogen. Traditional TiO 2 The utilization rate of sunlight by photocatalysts is low (only limited to ultraviolet light, accounting for about 4% of sunlight), which seriously restricts the development of photocatalytic technology. In order to effectively utilize solar energy, the development and design of highly efficient photocatalysts that respond to visible light is becoming a current research hotspot. [0003] Among many semiconductor photocatalysts, Bi...

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 Patents(China)
IPC IPC(8): B01J27/24B01J37/08B01J37/18C07C45/29C07C47/54
CPCB01J27/24B01J35/004B01J37/082B01J37/18C07C45/29C07C47/54
Inventor 祝淑颖梁诗景
Owner FUZHOU 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
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