Method for quickly preparing single-phase delafossite structure CuFeO2 microcrystalline material

A technology of microcrystalline materials and single-phase copper, applied in chemical instruments and methods, iron compounds, inorganic chemistry, etc., can solve the problems of limited material application and further development, inaccurate chemical properties, long reaction time, etc. The parameters are easy to control, the price is low, and the effect of a single output is high

Inactive Publication Date: 2019-11-12
KUNMING UNIV OF SCI & TECH
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CuFeO 2 Usually by high-temperature solid-state reaction (>850°C, >12h), sol-gel method with high-temperature (>650°C, 10h) post-treatment, or hydrothermal synthesis (180°C, <24h), all of these preparations The methods all involve high temperature and long reaction time, and the energy consumption is high
In addition, in the preparation of CuFeO by the above method 2 In the process, it is usually inevitable to introduce

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
  • Method for quickly preparing single-phase delafossite structure CuFeO2 microcrystalline material
  • Method for quickly preparing single-phase delafossite structure CuFeO2 microcrystalline material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A rapid preparation of single-phase delafossite structure CuFeO 2 The method of microcrystalline material, concrete steps are as follows:

[0030] (1) Adding Cu(NO 3 ) 2 .3H 2 O and Fe(NO 3 ) 3 .9H 2 O is added into deionized water according to a molar ratio of 1:1, fully stirred in a magnetic stirrer for 10 min to dissolve, and the stirring speed of the magnetic stirrer is 450 rpm to obtain a mixed solution, in which Cu(NO 3 ) 2 The concentration is 0.8mol / L;

[0031] (2) Add NaOH solution dropwise to the mixed solution in step (1), the concentration of NaOH solution is 1.5mol / L, the dropping speed is 1.5mL / min, the amount of NaOH is according to Cu(NO 3 ) 2 .3H 2 O and Fe(NO 3 ) 3 .9H 2 10 times the amount of the total substance of O was added, followed by ultrasonication for 10min and magnetic stirring for 15min, the ultrasonic power was 400W, and the stirring speed of the magnetic stirrer was 400 rpm;

[0032] (3) Add n-propionaldehyde dropwise to the ...

Embodiment 2

[0035] A rapid preparation of single-phase delafossite structure CuFeO 2 The method of microcrystalline material, concrete steps are as follows:

[0036] (1) Adding Cu(NO 3 ) 2 .3H 2 O and Fe(NO 3 ) 3 .9H 2O is added into deionized water according to a molar ratio of 1:1, fully stirred in a magnetic stirrer for 15min to dissolve, and the stirring speed of the magnetic stirrer is 300 rpm to obtain a mixed solution, in which Cu(NO 3 ) 2 The concentration is 0.5mol / L;

[0037] (2) Add NaOH solution dropwise to the mixed solution in step (1), the concentration of NaOH solution is 4mol / L, the dropping rate is 2.5mL / min, the amount of NaOH is according to Cu(NO 3 ) 2 .3H 2 O and Fe(NO 3 ) 3 .9H 2 4 times the amount of the total substance of O was added, followed by ultrasonication for 15min and magnetic stirring for 10min, the ultrasonic power was 300W, and the stirring speed of the magnetic stirrer was 450 rpm;

[0038] (3) Add n-propionaldehyde dropwise to the soluti...

Embodiment 3

[0041] A rapid preparation of single-phase delafossite structure CuFeO 2 The method of microcrystalline material, concrete steps are as follows:

[0042] (1) Adding Cu(NO 3 ) 2 .3H 2 O and Fe(NO 3 ) 3 .9H 2 O is added into deionized water according to a molar ratio of 1:1, fully stirred in a magnetic stirrer for 12min to dissolve, and the stirring speed of the magnetic stirrer is 350 rpm to obtain a mixed solution, in which Cu(NO 3 ) 2 The concentration is 0.6mol / L;

[0043] (2) Add NaOH solution dropwise to the mixed solution in step (1), the concentration of NaOH solution is 2mol / L, the dropping rate is 2mL / min, the amount of NaOH is according to Cu(NO 3 ) 2 .3H 2 O and Fe(NO 3 ) 3 .9H 2 5 times of the amount of the total substance of O was added, followed by ultrasonication for 12min and magnetic stirring for 12min, the ultrasonic power was 350W, and the stirring speed of the magnetic stirrer was 350 rpm;

[0044] (3) After adding n-propionaldehyde dropwise to...

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 method for quickly preparing a single-phase delafossite structure CuFeO2 microcrystalline material. The method comprises the steps that Cu(NO3)<2>.3H2O and Fe(NO3)<3>.9H2O are added into deionized water according to the mole ratio of 1:1, magnetic stirring for dissolving is conducted, and thus a mixed solution is obtained; a NaOH solution is dropwise added into the mixedsolution drop by drop, and then ultrasonic stirring and magnetic stirring are conducted in sequence; n-propanal is added into the solution dropwise, and then magnetic stirring is continued till colloidal suspension is formed; and the colloidal suspension is added into a microwave digestion tank, the filling rate of the colloidal suspension is 10-35%, microwave heating is conducted after sealing, after reaction is completed, a reaction product is naturally cooled to the room temperature, the microwave digestion tank is opened to take the reaction product out, and the reaction product is washedand dried to obtain the single-phase delafossite structure CuFeO2 microcrystalline material. According to the method, the reaction time is extremely short, energy consumption is less, operation is easy, technological parameters are easy to control, pollution is avoided, the yield is high, grains are developed completely, particle size distribution is even, and the single-phase delafossite structure CuFeO2 microcrystalline material can be widely applied to the fields of photocatalysis, photovoltaics, transparent conductive oxide, ferroelectric and the like.

Description

technical field [0001] The invention relates to a method for rapidly preparing single-phase delafossite structure CuFeO 2 A method for a microcrystalline material belongs to the field of synthesis and preparation of metal oxide semiconductor materials. Background technique [0002] copper iron ore ABO 2 The delafossite-type material was first reported by Friedel in 1873, and the delafossite-type material CuFeO was first synthesized by Pabst in 1946. 2 . CuFeO 2 The crystal structure is composed of two-dimensional close-packed Cu + and Fe 3+ o 6 Octahedrons are stacked alternately along the c-axis. Due to different stacking methods, hexagonal 2H structures (stacked in the manner of ... ABABAB ...) and rhombic 3R structures (stacked in the manner of ... ABCABC ...) will be formed respectively. Under practical preparation conditions, rhombohedral 3R structures have relatively low formation energies and are therefore more common. CuFeO 2 Due to its unique crystal struct...

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): C01G49/00
CPCC01G49/00C01P2002/72C01P2004/03
Inventor 刘清路赵宗彦
Owner KUNMING UNIV OF SCI & TECH
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