Biomass nanocellulose porous material loaded with nano transition metal oxide on surface, and preparation method thereof

A technology of nanocellulose and transition metals, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, catalyst activation/preparation, etc. small surface area etc.

Active Publication Date: 2021-09-10
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ternary composite gel prepared by the invention cannot achie

Method used

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  • Biomass nanocellulose porous material loaded with nano transition metal oxide on surface, and preparation method thereof
  • Biomass nanocellulose porous material loaded with nano transition metal oxide on surface, and preparation method thereof
  • Biomass nanocellulose porous material loaded with nano transition metal oxide on surface, and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0053] Example 1

[0054] (1) nano-cellulose biomass / nano transition metal oxide, organic carboxyl, olefin monomer, the olefin polymerization agents, surfactants initiator mixture:

[0055] S1: Preparation of ammonium persulfate oxidized cellulose nanofiber: 5g of cotton cellulose slurry was added to a concentration of 4% 150mL of dimethyl sulfoxide solution of sodium hydroxide to soak 24h swell, and then washed with deionized water until the pH same as deionized water, and then dispersed through the pretreated cellulosic feedstock consisting 200mL deionized water, 5g ammonium persulfate, an aqueous solution composed of 8g sodium hydroxide, stirred for 0.5h after hydrolysis of oxidized cellulose hydrolysis at 50 ℃ It was sonicated to give a suspension of cellulose nanofiber;

[0056] S2: cellulose nanofiber surface nano transition metal oxide is generated in situ: obtained in step S1 200mL1wt% of cellulose nanofiber suspension was heated to 70 ℃, with rapid stirring slowly added...

Example Embodiment

[0064] Example 2

[0065] Different amounts of surfactants were added polyvinyl alcohol, polyvinyl alcohol is added in an amount of 0.02g, all other conditions (such as: the type of material, and the amount of process and the like) are the same as in Example 1, the volume of the internal phase is stable with 75% of the cellulose nanofiber of high fiber / titanium dioxide Pickering emulsions, the emulsion droplet size between 40 to 100 m, an average droplet size of 70μm. By stable after shaping, crosslinking treatment of cellulose nanofibers / titania porous microspheres, the specific surface area of ​​12m 2 / g.

Example Embodiment

[0066] Example 3

[0067] Different amounts of surfactants were added polyvinyl alcohol, polyvinyl alcohol is added in an amount of 0.4g, all other conditions (such as: the type of material, and the amount of process and the like) are the same as in Example 1, the volume of the internal phase is stable with 90% of the cellulose nanofiber high fiber / titanium dioxide Pickering emulsions, the emulsion droplet size between 2-20 m, an average droplet size of 11μm. By stable after shaping, crosslinking treatment of cellulose nanofibers / titania porous microspheres, the specific surface area of ​​20m 2 / g.

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Abstract

The invention relates to a biomass nanocellulose/nano transition metal oxide porous material, and a preparation method and application thereof. Nano transition metal oxide is loaded on the surface of biomass nanocellulose through non-covalent interaction. The biomass nano cellulose/nano transition metal oxide porous material has both adsorption and catalysis functions, and can be used as a recyclable adsorption and degradation material; when being used as an adsorption catalytic degradation material, the porous material has the advantages of high adsorption catalytic degradation efficiency, environment friendliness, excellent regeneration capacity, easiness in separation, recyclability and no repeated pollution, and has a considerable application prospect.

Description

technical field [0001] The invention belongs to the technical field of utilization of biomass material resources and sewage treatment materials, and in particular relates to a highly efficient, fast and recyclable porous material prepared by using a high internal phase Pickering emulsion template method and a preparation method. Background technique [0002] Biomass materials are the most abundant natural biological materials in nature, including green plants, marine animals, bacteria and other organisms. Biomass nanocellulose extracted from biomass materials has a large specific surface area, a reactive surface, It has the advantages of light weight, green and environmental protection, and has potential application value in the field of sewage treatment. However, because the biomass nanocellulose adsorption material only has adsorption capacity, it is easy to cause secondary pollution. [0003] Nano-transition metal oxides have a strong catalytic oxidation effect on the de...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01J21/06B01J31/06B01J35/00B01J35/02B01J35/06B01J35/08B01J35/10B01J37/32C02F1/28C02F1/72
CPCB01J31/06B01J21/063B01J35/08B01J35/06B01J35/1014B01J35/0013B01J35/023B01J37/32B01J20/24B01J20/06B01J20/261B01J20/08C02F1/28C02F1/725B01J2231/70
Inventor 周立娟张建明段咏欣于鑫李晓琳魏洪秀张振超
Owner QINGDAO UNIV OF SCI & TECH
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