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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 achieve the best application effect because of its small specific surface area.

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

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Experimental program
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Effect test

Embodiment 1

[0054] (1) Preparation of biomass nanocellulose / nanometer transition metal oxide, carboxyl organic matter, olefin monomer, olefin polymerization initiator, and surfactant mixture:

[0055] S1: Preparation of cellulose nanofibers by ammonium persulfate oxidation method: 5 g of cotton pulp cellulose was added to 150 mL of 4% sodium hydroxide dimethyl sulfoxide solution, soaked for 24 hours for swelling, and then washed with deionized water to its pH The same as deionized water, and then disperse the pretreated cellulose raw material in an aqueous solution composed of 200mL deionized water, 5g ammonium persulfate, and 8g sodium hydroxide, stir and oxidize and hydrolyze the cellulose at 50°C for 0.5h Ultrasonic treatment of liquid to obtain cellulose nanofiber suspension;

[0056] S2: In-situ generation of nano-transition metal oxides on the surface of cellulose nanofibers: heat 200 mL of 1 wt.% cellulose nanofiber suspension obtained in step S1 to 70 ° C, slowly add 1 mL of titan...

Embodiment 2

[0065] The add-on of surfactant polyvinyl alcohol is different, and the add-on of polyvinyl alcohol is 0.02g, and all the other conditions (such as: raw material type, consumption and technical process etc.) are all identical with embodiment 1, obtain the stable internal phase volume of 75% high internal phase cellulose nanofiber / nano-titanium dioxide Pickering emulsion, the emulsion droplet size is between 40-100 μm, and the average droplet size is 70 μm. Stable cellulose nanofiber / nano-titanium dioxide porous microspheres were obtained after post-treatment such as shaping and cross-linking, with a specific surface area of ​​12m 2 / g.

Embodiment 3

[0067] The add-on of surfactant polyvinyl alcohol is different, and the add-on of polyvinyl alcohol is 0.4g, and all the other conditions (such as: raw material type, consumption and technological process etc.) are all the same with embodiment 1, obtain the stable internal phase volume of 90% high internal phase cellulose nanofiber / nano-titanium dioxide Pickering emulsion, the emulsion droplet size is between 2-20 μm, and the average droplet size is 11 μm. Stable cellulose nanofiber / nano-titanium dioxide porous microspheres are obtained after post-treatment such as shaping and cross-linking, with a 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
CPCB01J31/06B01J21/063B01J37/32B01J20/24B01J20/06B01J20/261B01J20/08C02F1/28C02F1/725B01J2231/70B01J35/58B01J35/40B01J35/23B01J35/51B01J35/613
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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