Unlock instant, AI-driven research and patent intelligence for your innovation.

Urchin-like coznal-ldh/rgo/g-c 3 no 4 Z-type heterojunction and its preparation method and application

A g-c3n4z, sea urchin-like technology, applied in the field of semiconductor composite materials, can solve the problems such as the semiconductor performance of LDHs materials that have not been mentioned, and achieve the effects of multiple catalytic reaction active sites, improved separation efficiency, and simple preparation process

Active Publication Date: 2021-04-27
NANJING UNIV OF SCI & TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN104941672A discloses a single-layer hexagonal Ag 3 PO 4 / Fe 3 o 4 / Co-Ni LDH composite with Ag 3 PO 4 For semiconductors, Ag and Fe 3 o 4 As a co-catalyst, it is applied to the photocatalytic degradation of methyl orange. The composite material does not mention the semiconductor properties of LDHs materials

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
  • Urchin-like coznal-ldh/rgo/g-c <sub>3</sub> no <sub>4</sub> Z-type heterojunction and its preparation method and application
  • Urchin-like coznal-ldh/rgo/g-c <sub>3</sub> no <sub>4</sub> Z-type heterojunction and its preparation method and application
  • Urchin-like coznal-ldh/rgo/g-c <sub>3</sub> no <sub>4</sub> Z-type heterojunction and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Disperse 10 mg of reduced graphene oxide and 0.05 g of graphitic carbon nitride in 20 mL of deionized water, and sonicate for 30 min to obtain a uniformly dispersed suspension. 0.2912g (1.0mmol) of Co(NO 3 ) 2 ·6H 2 O, 0.2974g (1.0mmol) of Zn(NO 3 ) 2 9H 2 O, 0.3752g (1.0mmol) of Al(NO 3 ) 3 ·6H 2 O (1.0mmol) and 0.3600g (6.0mmol) urea were dissolved in 20ml deionized water and stirred for 30min to form a uniform mixed metal solution. Then the suspension of reduced graphene oxide and graphitic carbon nitride was added dropwise to the above mixed metal solution under vigorous stirring, stirred at room temperature for 30 min, then transferred to a stainless steel hydrothermal kettle (100 mL), and heated at 180 °C The hydrothermal reaction was carried out for 6h. After natural cooling, centrifuge, wash repeatedly with distilled water and absolute ethanol three times, and vacuum-dry at 60 °C to finally obtain the sea urchin-like CoZnAl-LDH / RGO / g-C 3 N 4 Z-shaped ...

Embodiment 2

[0030] Disperse 15 mg of reduced graphene oxide and 0.06 g of graphitic carbon nitride in 20 mL of deionized water, and sonicate for 30 min to obtain a uniformly dispersed suspension. 0.2912g (1.0mmol) of Co(NO 3 ) 2 ·6H 2 O, 0.2974g (1.0mmol) of Zn(NO 3 ) 2 9H 2O, 0.3752g (1.0mmol) of Al(NO 3 ) 3 ·6H 2 O (1.0mmol) and 0.3600g (6.0mmol) urea were dissolved in 20ml deionized water and stirred for 30min to form a uniform mixed metal solution. Then the suspension of reduced graphene oxide and graphitic carbon nitride was added dropwise to the above mixed metal solution under vigorous stirring, stirred at room temperature for 30 min, then transferred to a stainless steel hydrothermal kettle (100 mL), and heated at 180 °C Underwater thermal reaction 8h. After natural cooling, centrifuge, wash repeatedly with distilled water and absolute ethanol three times, and vacuum-dry at 60 °C to finally obtain the sea urchin-like CoZnAl-LDH / RGO / g-C 3 N 4 Z-shaped heterojunction.

Embodiment 3

[0032] Disperse 15 mg of reduced graphene oxide and 0.15 g of graphitic carbon nitride in 20 mL of deionized water, and sonicate for 30 min to obtain a uniformly dispersed suspension. 0.2912g (1.0mmol) of Co(NO 3 ) 2 ·6H 2 O, 0.2974g (1.0mmol) of Zn(NO 3 ) 2 9H 2 O, 0.3752g (1.0mmol) of Al(NO 3 ) 3 ·6H 2 O (1.0mmol) and 0.3600g (6.0mmol) urea were dissolved in 20ml deionized water and stirred for 30min to form a uniform mixed metal solution. Then the suspension of reduced graphene oxide and graphitic carbon nitride was added dropwise to the above mixed metal solution under vigorous stirring, stirred at room temperature for 30 min, then transferred to a stainless steel hydrothermal kettle (100 mL), and heated at 180 °C Underwater thermal reaction 8h. After natural cooling, centrifuge, wash with distilled water and absolute ethanol three times, and dry under vacuum at 60°C. Since the mass ratio of added graphitic carbon nitride and reduced graphene oxide exceeds 6:1, r...

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 sea urchin-shaped CoZnAl‑LDH / RGO / g‑C 3 N 4 Z-type heterojunction and its preparation method, which are prepared by a simple hydrothermal reaction, adding the ultrasonically dispersed reduced graphene oxide and graphite suspension dropwise to the removal of cobalt nitrate, zinc nitrate, aluminum nitrate and urea ionic aqueous solution, stirred and then transferred to an autoclave for high-temperature hydrothermal reaction to obtain sea urchin-like CoZnAl-LDH / RGO / g-C with a size between 5-7μm 3 N 4 Z-shaped heterojunction. Urchin-shaped CoZnAl-LDH / RGO / g-C of the present invention 3 N 4 The Z-type heterojunction has high specific surface area, photon utilization rate, and photogenerated electron and hole separation efficiency, and can be applied in the fields of catalysis and energy conversion.

Description

technical field [0001] The invention belongs to the technical field of semiconductor composite materials, in particular to a sea urchin-like CoZnAl-LDH / RGO / g-C 3 N 4 Z-type heterojunction and its preparation method. Background technique [0002] With the development of industrialization of human society and the rapid growth of population, the problems of energy shortage and environmental pollution have become the focus of common attention all over the world. At present, fossil energy (oil, coal, and natural gas) is still the main energy source for human beings, and the development of renewable energy still requires a lot of technical support. Photocatalytic technology based on semiconductor materials is known as a green new technology and an ideal way to solve energy shortage and environmental pollution. Traditional TiO 2 Due to the defects of large bandgap width, low utilization rate of visible light and high recombination rate of photogenerated electrons and holes, the...

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): B01J27/24B01J35/10B01J35/02C02F1/30C01B32/40B01J35/00
CPCC01B32/40C02F1/30B01J27/24C02F2305/10B01J35/39B01J35/00B01J35/30B01J35/61
Inventor 杨勇吴家家肖婷婷唐钲黄俊杰
Owner NANJING UNIV OF SCI & TECH