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

Photocatalyst for CO2 reduction-biomass oxidation coupling reaction and preparation method thereof

A photocatalyst, oxidative coupling technology, applied in catalyst activation/preparation, physical/chemical process catalyst, carbon monoxide, etc., can solve the problems of limited coupling reaction efficiency, photoresponse and poor photogenerated electron-hole separation ability, and achieve excellent performance, the effect of realizing separation ability

Pending Publication Date: 2022-07-22
BEIJING UNIV OF CHEM TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a single LDH as a photocatalyst, its photoresponse and photogenerated electron-hole separation ability are relatively poor, which limits the further improvement of the coupling reaction efficiency.

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
  • Photocatalyst for CO2 reduction-biomass oxidation coupling reaction and preparation method thereof
  • Photocatalyst for CO2 reduction-biomass oxidation coupling reaction and preparation method thereof
  • Photocatalyst for CO2 reduction-biomass oxidation coupling reaction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A: Weigh 0.004mol of Mg(NO 3 ) 2 ·6H 2 O and 0.002 mol of Al (NO 3 ) 3 ·9H 2 O powder, dissolved in a beaker with 30 mL of deionized water.

[0037] B: Weigh 0.03mol of urea and 0.6000g of TiO 2 powder, into a beaker containing 30 mL of deionized water.

[0038] C: Add the above two solutions to another beaker at the same time, through vigorous stirring and ultrasonic dispersion, until the TiO 2 The powder is uniformly dispersed in the solution to obtain MgAl-LDH / TiO 2 The suspension was transferred to the reactor, aged at 120°C for 24h, centrifuged and washed to neutralize the filtrate; dried at 50°C for 12h, taken out and ground into powder to obtain MgAl-LDH / TiO 2 Photocatalysts, of which TiO 2 The mass ratio to MgAl-LDH is 1.

[0039] The above-prepared photocatalysts were used to drive CO by light 2 Reduction-5-HMF oxidation coupling reaction experiment:

[0040] Dissolve 30 mg of catalyst powder in 60 mL of 0.02 g / L 5-HMF solution, put it into a top-il...

Embodiment 2

[0042] A: Weigh 0.006mol of Ni(NO 3 ) 2 ·6H 2 O and 0.002mol Fe(NO 3 ) 3 ·9H 2 O powder, dissolved in a beaker containing 30 mL of deionized water.

[0043] B: Weigh 0.02mol of urea and 0.3000g of Cu 2 O solid, feeding into a beaker filled with 30 mL of deionized water.

[0044] C: Add solution A and suspension B to the beaker at the same time, and stir vigorously and ultrasonically disperse until Cu 2 O powder is uniformly dispersed in the solution to obtain NiFe-LDH / Cu 2 O suspension; transferred to the reactor, aged at 100°C for 12h, washed and centrifuged until neutral; dried at 60°C for 12h, taken out, and ground into powder to obtain NiFe-LDH / Cu 2 O photocatalyst, where Cu 2 The mass ratio of O to NiFe-LDH is 0.6.

Embodiment 3

[0046] A: Weigh 0.004mol of Zn(NO 3 ) 2 ·6H 2 O and 0.002 mol of Cr (NO 3 ) 3 ·9H 2 O powder, dissolved in a beaker containing 30 mL of deionized water.

[0047] B: Weigh 0.04mol of urea and 1.2000g of CeO 2 The solid was charged into a beaker containing 30 mL of deionized water.

[0048] C: Add solution A and suspension B to the beaker simultaneously, and stir vigorously and ultrasonically disperse until CeO 2 The powder is uniformly dispersed in the solution to obtain ZnCr-LDH / CeO 2 the suspension; transferred to the reactor, aged at 150 °C for 36 h, washed and centrifuged until neutral; dried at 60 °C for 12 h, taken out, and ground into powder to obtain ZnCr-LDH / CeO 2 Photocatalysts in which CeO 2 The mass ratio to ZnCr-LDH is 3.

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 provides a photocatalyst for CO2 reduction-biomass oxidation coupling reaction and a preparation method thereof.The photocatalyst is synthesized through a one-step hydrothermal method, and the composite photocatalyst LDH / N, N-dimethyl formamide is obtained by controlling the aging temperature, the reaction time and the proportion and variety of LDH and metal oxide; wherein N is an oxide with excellent light response capability and photo-induced electron capture capability, and interlayer anions of LDH are CO3 < 2->. The photocatalyst can generate more electrons (e <->) and holes (h < + >) in photocatalytic CO2 reduction-biomass oxidation coupling reaction, the electrons (e <->) and the holes (h < + >) participate in CO2 reduction half-reaction and biomass oxidation half-reaction respectively, and meanwhile, CO3 < 2-> pre-enriched between LDH laminates promotes the reduction half-reaction, so that the catalyst shows excellent catalytic performance.

Description

technical field [0001] The present invention belongs to CO 2 The field of comprehensive utilization and photocatalyst preparation, in particular to a preparation method and application of a composite LDH / N photocatalyst, which can be used for photocatalysis of CO 2 Reduction and biomass oxidation coupled reaction process. Background technique [0002] Over the past half century, rapid population growth, substantial progress in industrial technology, and over-exploitation and burning of fossil fuels have led to CO2 emissions. 2 The main greenhouse gas emissions have increased significantly, and the resulting energy crisis has intensified, seriously threatening the survival and sustainable development of human beings. In this context, photocatalytic CO 2 The reduction technology has received extensive attention and research, and CO can be realized under light driving. 2 Conversion to a series of high value-added products such as CO, hydrocarbons, liquid fuels, etc. And co...

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): B01J27/236B01J37/10C01B32/40C07D307/46
CPCB01J27/236B01J37/10C07D307/46C01B32/40B01J35/39
Inventor 李殿卿冯俊婷赵银范嘉烜王倩
Owner BEIJING UNIV OF CHEM TECH
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