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Method for preparing nickel oxide nanoparticles from water hyacinth and application

A technology of nano-particles and water hyacinth, which is applied in the field of green preparation of nano-materials, can solve the problems of green synthesis of NiO nanoparticles that have not yet been reported, difficult to meet the requirements of green environmental protection, and toxicity, and achieve simple and easy preparation process conditions. Promotes the utilization of reducing sugar and uniform particle size

Active Publication Date: 2020-10-30
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] So far, most metal nanoparticles have been synthesized by chemical and physical methods, but these methods have many shortcomings: such as the use of toxic, expensive chemicals and flammable organic solvents, and the formation of toxic by-products, it is difficult to meet the environmental requirements of green environmental protection
So far, there has been no research report on the green synthesis of NiO nanoparticles using water hyacinth extract

Method used

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  • Method for preparing nickel oxide nanoparticles from water hyacinth and application
  • Method for preparing nickel oxide nanoparticles from water hyacinth and application
  • Method for preparing nickel oxide nanoparticles from water hyacinth and application

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1: Prepare NiO nanoparticles as follows:

[0038] (1) Take the water hyacinth stems and leaves, wash them with tap water and distilled water successively, cut them into pieces, and grind them into mud with a mortar and grinding rod to obtain the water hyacinth extract. According to the dosage of 5g extract / 100mL distilled water, add distilled water and boil for 10min. Further suction filtration and the volume was adjusted to 100mL to obtain water hyacinth extract. (2) Add 0.1mol / L NiCl in the obtained water hyacinth extract by volume ratio of 1:1 2 Solution, at room temperature, placed on a magnetic stirrer and continuously stirred for 20 minutes to fully mix, add 0.1mol / L newly prepared NaOH solution, adjust the pH of the reaction solution to 10, it can be seen that flocculent precipitates are formed, continue to stir for 10 minutes to make it fully reaction. After the reaction, let stand for 20 minutes, then centrifuge at 8000 rpm for 15 minutes, discard ...

Embodiment 2

[0040] (1) Take the water hyacinth stems and leaves, wash them with tap water and distilled water successively, cut them into pieces, and grind them into mud with a mortar and grinding rod to obtain the water hyacinth extract. According to the dosage of 5g extract / 100mL distilled water, add distilled water and boil for 10min. Further suction filtration and the volume was adjusted to 100mL to obtain water hyacinth extract. (2) Add 0.1mol / L NiCl in the prepared water hyacinth extract by volume ratio of 1:1 2Solution, at room temperature, placed on a magnetic stirrer and continuously stirred for 20 minutes to fully mix, add 0.1mol / L newly prepared NaOH solution, adjust the pH of the reaction solution to 11, it can be seen that flocculent precipitates are formed, continue to stir for 10 minutes to make it fully reaction. After the reaction, let stand for 20 minutes, then centrifuge at 8000 rpm for 15 minutes, discard the supernatant, and wash 3 times with absolute ethanol and dis...

Embodiment 3

[0042] The NiO nanoparticle sample S1 prepared from water hyacinth was characterized, and the XRD pattern is attached figure 1 As shown, the diffraction peaks are sharper, indicating that the sample has a better crystal structure. There are diffraction peaks at 2θ=37.25°, 43.26°, 62.88°, 75.46°, 79.41°, corresponding to the crystal planes (111), (200), (220), (311) and (222), and the standard card JCPDS NO .47-1049 are consistent, indicating the formation of a pure face-centered cubic structure, and there are no other diffraction peaks, indicating that relatively pure NiO nanoparticles have been prepared. SEM image (attached image 3 ) reveals that NiO nanoparticles have a cubic spherical structure from the surface morphology, and there is a certain amount of agglomeration between the particles. TEM image (attached Figure 5 ) reveals the cubic structure of nano-NiO, and the crystal particle size analysis using Nano Measurer 1.2 shows that the average particle size of the n...

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Abstract

The invention discloses a method for preparing nickel oxide nanoparticles from water hyacinth and application. According to the invention, the water hyacinth is used as a raw material for green synthesis of the NiO nanoparticles. The preparation method comprises the following steps: mixing an extract of fresh stems and leaves of the water hyacinth with a NiCl2 solution, conducting continuous stirring for a reaction, further regulating the pH value of a reaction solution to 10-11, performing standing and centrifuging, carrying out washing with absolute ethyl alcohol and distilled water, profrming calcining in a muffle furnace, and successively carrying out grinding and sieving to obtain the green synthetic NiO nanoparticles. The NiO nanoparticles with a certain concentration synthesized bythe method are added into a system for hydrogen production through fermentation of a straw hydrolysate, and have a remarkable effect of promoting biohydrogen synthesis and hydrolysis sugar utilization, so an accumulative hydrogen production amount obtained at the optimal addition concentration is remarkably increased compared with contrast treatment. The preparation method of the NiO nanoparticlesis simple, reaction process is greatly simplified, raw materials are low in price, cost is reduced, and the obtained nanoparticles are stable in performance, uniform in particle size and remarkable in application effect.

Description

technical field [0001] The present invention relates to a green preparation method and application field of nanomaterials, in particular to a preparation method and application of green synthetic NiO nanoparticles from water hyacinth, especially to a method and application of NiO nanoparticles prepared from extracts of water hyacinth stems and leaves in regulating woodiness. The effect of cellulose hydrolyzate fermentation in hydrogen production is applied to the field of efficient synthesis and regulation of biohydrogen energy. Background technique [0002] So far, most metal nanoparticles have been synthesized by chemical and physical methods, but these methods have many shortcomings: such as the use of toxic, expensive chemicals and flammable organic solvents, and the formation of toxic by-products, it is difficult to meet the environmental requirements of green environmental protection . Therefore, in recent years, the use of green methods to synthesize metal oxide nano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04C12N1/20C12P3/00B82Y30/00B82Y40/00C12R1/22
CPCC01G53/04C12N1/20C12P3/00B82Y30/00B82Y40/00C01P2002/72C01P2004/04C01P2004/03C01P2004/32C01P2004/62C01P2004/64
Inventor 张琴李艳宾丁鹏飞张永贵童旭
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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