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

Preparation method of morphologically controllable cuprous oxide crystals

A cuprous oxide and morphology technology, applied in copper oxide/copper hydroxide and other directions, can solve the problems of increasing the difficulty of preparation and product cleaning, reducing the activity of cuprous oxide, and difficult to mass-produce, and achieving uniform morphology. , The effect of short response time and high controllability

Active Publication Date: 2019-05-17
CHONGQING UNIV
View PDF9 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have realized the control of the morphology of cuprous oxide to a certain extent, they also increase the difficulty of preparation and product cleaning, and the low concentration and long time consumption make it difficult to produce in large quantities. More importantly, surfactants The introduction of will seriously reduce the activity of cuprous oxide in catalytic applications

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 morphologically controllable cuprous oxide crystals
  • Preparation method of morphologically controllable cuprous oxide crystals
  • Preparation method of morphologically controllable cuprous oxide crystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Preparation of cubic cuprous oxide crystals by selection of chloride ions

[0028] (1) Set the water bath reaction temperature to 55°C, add dropwise 10 mL of 2 mol / L NaOH solution to 100 mL of 0.01 mol / L CuCl 2 In the aqueous solution, stir the reaction for 30min.

[0029] (2) 10 mL of 0.6 mol / L reducing agent ascorbic acid was added dropwise to the mixed solution, reacted in a water bath for 1 h, the product was centrifuged, washed and dried to obtain cuprous oxide crystals with a cubic shape.

Embodiment 2

[0030] Example 2: Preparation of cubo-octahedral cuprous oxide crystals by selection of bromide ions

[0031] (1) Set the water bath reaction temperature to 55°C, add dropwise 10 mL of 2 mol / L NaOH solution to 100 mL of 0.01 mol / L CuBr 2 In the aqueous solution, stir the reaction for 30min.

[0032] (2) 10 mL of 0.6 mol / L reducing agent ascorbic acid was added dropwise to the mixed solution, reacted in a water bath for 1 h, the product was centrifuged, washed, and dried to obtain cuprous oxide crystals with cuboctahedral morphology.

Embodiment 3

[0033] Example 3: Preparation of octahedral cuprous oxide crystals by selection of iodide ions

[0034] (1) Set the water bath reaction temperature to 55°C, add 10 mL of 2 mol / L NaOH solution dropwise into 100 mL of 0.01 mol / L CuI aqueous solution, and stir for 30 min.

[0035] (2) 10 mL of 0.6 mol / L reducing agent ascorbic acid was added dropwise to the mixed solution, reacted in a water bath for 1 h, and the product was centrifuged, washed and dried to obtain cuprous oxide crystals with octahedral morphology.

[0036] Figure 1-3 They are the scanning electron microscope images of the cuprous oxide crystals prepared in Examples 1-3, respectively. By adjusting the type of halide anion in the reaction system, three cuprous oxide crystals with different shapes of cube, cubo-octahedron and octahedron were prepared. And the crystal structure is complete and the morphology is uniform. Figure 4 Then it is the XRD phase analysis figure of the cuprous oxide crystal prepared in e...

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 relates to a preparation method of morphologically controllable cuprous oxide crystals. The method comprises the following steps that a water solution containing copper ions and halogenanions is provided in a water bath reaction container; a NaOH solution is dropwise added into the water bath reaction container; then, ascorbic acid is dropwise added into the water bath reaction container; the product is centrifuged, washed and dried to obtain the cuprous oxide crystals with the required morphology, wherein the water bath temperature of the water bath reaction container is alwayskept to be 50 to 60 DEG C; the required morphology is regulated and controlled by selecting the halogen anion type. In a single water phase solvent system, the controllable preparation of the cuprousoxide crystals in three kinds of different morphologies including cube, cuboctahedron and octahedron can be realized by regulating and controlling the single variable of the halogen anion; the product crystal structure is complete; the morphology is uniform; the purity is high.

Description

technical field [0001] The invention relates to a method for preparing cuprous oxide crystals. Background technique [0002] Cuprous oxide is a p-type semiconductor material with visible light response. It has the advantages of low price, abundant reserves, and environmental friendliness. It plays an important role in the technical fields of solar cells, photocatalytic water splitting, and photocatalytic degradation of organic pollutants in wastewater. application value. Cuprous oxide crystals have many shapes and are easily dissolved and removed in acidic or alkaline environments. They are often used as templates for the synthesis of nanoparticles with specific shapes. In addition, a large number of studies have shown that the electronic structure, surface energy, and chemical reactivity of materials not only depend on the type of substance, but also largely depend on the crystallographic morphology and surface morphology of the material. Therefore, the development of a s...

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 Applications(China)
IPC IPC(8): C01G3/02
Inventor 郭江娜席筱涵王哲源黄文强林文轩余泽明李安琪杨文静张云怀
Owner CHONGQING UNIV
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