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

Cuttlefish melanin-based nano-silver composite material as well as preparation method and catalytic application thereof

A composite material and melanin-based technology are applied in the field of squid melanin-based nano-silver composite materials and their preparation, which can solve the problems of complex synthesis process, complicated and expensive, and high energy consumption, and achieve stable catalytic performance, good catalytic performance, and difficulty in agglomeration. or shedding effect

Pending Publication Date: 2021-09-07
GUANGXI UNIV FOR NATITIES
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a squid melanin-based nano-silver composite material and its preparation method and catalytic application, aiming to overcome the complex synthesis process and complex and expensive synthesis equipment in the conventional carrier-based nano-silver catalyst in the prior art Use, high energy consumption or environmental protection and many other shortcomings

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
  • Cuttlefish melanin-based nano-silver composite material as well as preparation method and catalytic application thereof
  • Cuttlefish melanin-based nano-silver composite material as well as preparation method and catalytic application thereof
  • Cuttlefish melanin-based nano-silver composite material as well as preparation method and catalytic application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A squid melanin-based nano-silver composite material, the preparation method of which comprises the steps of:

[0024] S1. Preparation of squid melanin dispersion: take squid ink sac, cut and squeeze out the ink, add 2 times the volume of deionized water to soak for 10 hours, centrifuge at 10000rmp, separate solid and liquid, and remove the filtrate and its soluble components , the remaining solid was vacuumized to -0.08MPa at 45°C, and dried for 24 hours to obtain squid melanin powder. Then take 0.2000g of squid melanin powder and add it to 9.8265g of deionized water, ultrasonically oscillate until the dispersion is uniform, and let it stand for precipitation 10-14h, slowly absorb the upper layer liquid (the mass of the precipitated part after drying is about 0.0265g), that is, a squid melanin dispersion with a solid content of about 1.735%, and set aside;

[0025] S2. Composite material preparation: Put 1g of PVP powder, 30mL of deionized water and 4g of S1 squid mela...

Embodiment 2

[0027] A squid melanin-based nano-silver composite material, the preparation method of which comprises the steps of:

[0028] S1. Preparation of squid melanin dispersion: take squid ink sac, cut and squeeze out the ink, add 2 times the volume of deionized water to soak for 10 hours, centrifuge at 10000rmp, separate solid and liquid, and remove the filtrate and its soluble components , the remaining solid was vacuumized to -0.08MPa at 45°C, and dried for 24 hours to obtain squid melanin powder. Then take 0.2000g of squid melanin powder and add it to 9.8265g of deionized water, ultrasonically oscillate until the dispersion is uniform, and let it stand for precipitation 10-14h, slowly absorb the upper layer liquid (the mass of the precipitated part after drying is about 0.0285g), that is, a squid melanin dispersion with a solid content of about 1.715%, and set aside;

[0029] S2. Composite material preparation: Put 1g of PVP powder, 30mL of deionized water and 4g of S1 squid mela...

Embodiment 3

[0031] A squid melanin-based nano-silver composite material, the preparation method of which comprises the steps of:

[0032] S1. Preparation of squid melanin dispersion: take squid ink sac, cut and squeeze out the ink, add 2 times the volume of deionized water to soak for 10 hours, centrifuge at 10000rmp, separate solid and liquid, and remove the filtrate and its soluble components , the remaining solid was vacuumized to -0.08MPa at 45°C, and dried for 24 hours to obtain squid melanin powder. Then take 0.2000g of squid melanin powder and add it to 9.8265g of deionized water, ultrasonically oscillate until the dispersion is uniform, and let it stand for precipitation 10-14h, slowly absorb the upper layer liquid (the mass of the precipitated part after drying is about 0.0305g), that is, a squid melanin dispersion with a solid content of about 1.695%, and set aside;

[0033] S2. Composite material preparation: put PVP powder 1g, deionized water 30mL and S1 squid melanin dispersi...

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
The average diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a cuttlefish melanin-based nano-silver composite material and a preparation method and catalytic application thereof.The preparation method comprises the following steps that S1, cuttlefish ink sacs are taken and cut, ink is squeezed out, after deionized water is added for soaking treatment, centrifugation, solid-liquid separation and vacuum drying are conducted, cuttlefish melanin powder is obtained, then the cuttlefish melanin powder is ultrasonically dispersed into a proper amount of deionized water, standing and precipitating are performed to remove large particles which cannot be ultrasonically dispersed, and upper-layer dispersion liquid is taken; and s2, PVP powder, deionized water and the cuttlefish melanin dispersion liquid in the step S1 are put into a reaction container according to the proportion and subjected to ultrasonic dispersion, then a newly-prepared silver-ammonia solution is added, nitrogen is introduced to remove air, under the protection of nitrogen, the temperature is increased to 70 DEG C and maintained, stirring is conducted till the reaction is complete, and finally centrifugation, water washing and vacuum drying are conducted to obtain the cuttlefish melanin composite material. The cuttlefish melanin-based nano-silver composite material has the beneficial effects that the cuttlefish melanin is used as a carrier of the silver nanoparticles for the first time, and the silver-loaded composite material with excellent catalytic performance is prepared; and the composite material is good in catalytic performance, and the silver nanoparticles are firmly combined on the surface of the carrier and are not easy to agglomerate or fall off.

Description

technical field [0001] The invention belongs to the field of material science and catalysis, and in particular relates to a cuttlefish melanin-based nano-silver composite material, a preparation method and a catalytic application thereof. Background technique [0002] The rapid economic development has produced a large amount of dye organic sewage, which has caused great harm to the natural environment and human body. Silver nanoparticles (AgNPs) with small particle size and uniform dispersion are ideal catalysts due to their large specific surface area, and are widely used in heterogeneous catalysis due to their high catalytic activity, low toxicity and easy preparation. field. However, single AgNPs have high surface energy due to their small particle size and large specific surface area, which are prone to agglomeration and oxidation, leading to problems such as reduced catalytic activity and catalyst poisoning, and the disadvantages of difficult recovery and high price a...

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): B01J31/26B01J37/34B01J37/16C02F1/70C02F101/34C02F101/36C02F101/38
CPCB01J31/26B01J37/343B01J37/16C02F1/70C02F2101/345C02F2101/36C02F2101/38C02F2101/40C02F2101/308B01J35/399B01J35/393B01J35/23
Inventor 刘胜李庆雷福厚段文贵陈荣华郭宇娟梁玉霖彭华玲欧阳朝柳黄照华邓菲陆建宾
Owner GUANGXI UNIV FOR NATITIES
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