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

A single-layer hexagonal ag 3 po 4 /fe 3 o 4 /co‑ni LDH Composite Preparation Method

A composite material, single-layer technology, applied in chemical instruments and methods, water/sludge/sewage treatment, chemical/physical processes, etc., can solve problems such as photocatalytic activity limitation and low utilization of sunlight

Inactive Publication Date: 2017-07-04
NORTHWEST NORMAL UNIVERSITY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most catalysts such as titanium dioxide can only produce catalytic activity under ultraviolet light (accounting for 5% of solar radiation), and the low utilization rate of sunlight makes the photocatalytic activity greatly limited.

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
  • A single-layer hexagonal ag <sub>3</sub> po <sub>4</sub> /fe <sub>3</sub> o <sub>4</sub> /co‑ni LDH Composite Preparation Method
  • A single-layer hexagonal ag <sub>3</sub> po <sub>4</sub> /fe <sub>3</sub> o <sub>4</sub> /co‑ni LDH Composite Preparation Method
  • A single-layer hexagonal ag <sub>3</sub> po <sub>4</sub> /fe <sub>3</sub> o <sub>4</sub> /co‑ni LDH Composite Preparation Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The monolayer hexagonal Ag of the present invention 3 PO 4 / Fe 3 o 4 / Co-Ni LDH composites were prepared as follows:

[0030] 1. Preparation of Co-Ni LDH

[0031] (1) 0.1189g CoCl 2 ·6H 2O, 0.059gNiCl 2 ·6H 2 O and 0.6308g hexamethylenetetramine are added to the distilled water of 100ml;

[0032] (2) Ultrasonic disperse the mixture for 10 minutes to fully dissolve it; there is no requirement for the frequency, as long as it is dispersed.

[0033] (3) Transfer the mixed solution into a 100ml reaction kettle and react at 120°C for 5h; the OH content contained in Co-Ni LDH prepared at 120°C is higher than that of Co-Ni LDH prepared at 95°C - More, it is beneficial to generate OH·;

[0034] (4) After cooling, the mixture was suction-filtered, washed with secondary water until neutral, and a pale yellow precipitate was obtained, which was dried at room temperature to prepare Co-Ni LDH. figure 1 A is the scanning electron microscope image of the prepared Co-Ni LDH....

Embodiment 2

[0048] The difference between this embodiment and embodiment 1 is:

[0049] Step 3CH 3 In the preparation of COOAg, AgNO 3 The concentration of the solution is 1.0 mol / L.

[0050] In step 4, the hexagonal Ag 3 PO 4 / Fe 3 o 4 The preparation method of / Co-Ni LDH composite material is: take the 0.089g Fe prepared in the above steps 3 o 4 Nanoparticles (0.387mmol), 0.065g Co-Ni LDH (0.698mmol) and Na 2 HPO 4 Dissolve 0.80g (0.0056mol) in 100ml of deionized water, stir for 24 hours, and rinse off excess Na 2 HPO 4 , to obtain a black precipitate by suction filtration, and dissolve the black precipitate in a solution containing 2.804g CH 3 COOAg (0.0168mol) in 50ml of deionized water was stirred for 24h, and the black powder obtained by suction filtration was dried at room temperature to obtain Co-Ni loaded Ag 3 PO 4 and Fe 3 o 4 Hexagonal layers of nanoparticles, i.e. hexagonal Ag 3 PO 4 / Fe 3 o 4 / Co-Ni LDH composites.

Embodiment 3

[0052] The difference between this embodiment and embodiment 1 is:

[0053] Step 3CH 3 In the preparation of COOAg, AgNO 3 The concentration of the solution is 2.5mol / L.

[0054] In step 4, the hexagonal Ag 3 PO 4 / Fe 3 o 4 The preparation method of / Co-Ni LDH composite material is: take the 0.0479g Fe prepared in the above steps 3 o 4 Nanoparticles (0.2067mmol), 0.050g Co-Ni LDH (0.5376mmol) and Na 2 HPO 4 1.130g (0.0079mol) was dissolved in 100ml of deionized water, stirred for 24h, and excess Na was washed away 2 HPO 4 , to obtain a black precipitate by suction filtration, and dissolve the black precipitate in a solution containing 3.985g CH 3 COOAg (0.0237mol) in 50ml deionized water was stirred for 24h, and the black powder obtained by suction filtration was dried at room temperature to obtain Co-Ni loaded Ag 3 PO 4 and Fe 3 o 4 Hexagonal layers of nanoparticles, i.e. hexagonal Ag 3 PO 4 / Fe 3 o 4 / Co-Ni LDH composites.

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
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a single-layer hexagonal Ag3PO4 / Fe3O4 / Co-Ni LDH (layered double hydroxide) composite material. The preparation method comprises the following steps: dissolving Co-Ni LDH, Fe3O4 nano particles and Na2HPO4 into water, stirring, performing suction filtration to acquire black precipitates, and dissolving the black precipitates into CH3COOAg and stirring to obtain the black single-layer hexagonal Ag3PO4 / Fe3O4 / Co-Ni LDH composite material. The composite material prepared by the method can degrade methyl orange of azo dyes under a condition of visible light.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, in particular to a single-layer hexagonal Ag 3 PO 4 / Fe 3 o 4 / Co-Ni LDH composite material preparation method. Background technique [0002] In 2010, the magazine "Nature" reported a strong oxidizing visible light photocatalyst silver phosphate (Ag 3 PO 4 ), this new type of silver phosphate photocatalyst can absorb sunlight with a wavelength of less than 520nm, and has a quantum yield of up to 90% under visible light, and has a strong oxidation ability under visible light, and has shown in many organic dye degradation experiments excellent photocatalytic performance. As an emerging material, photocatalysts can use sunlight to treat environmental pollutants, opening up an effective new way for humans to manage the environment. Titanium dioxide (TiO 2 ) has the characteristics of high catalytic activity, good chemical stability, low cost, safety and non-toxicity, and is one of 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): B01J27/185B01J27/18C02F1/30C02F101/34C02F101/38
CPCY02W10/37
Inventor 卢小泉陈平严小雨王彩荷郭旭东
Owner NORTHWEST NORMAL UNIVERSITY
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